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Flexural strength of repaired denture base materials manufactured for the CAD-CAM technique J. Oral Sci. (IF 1.9) Pub Date : 2024-03-15 Şebnem Özatik, Canan Bural Alan
Purpose: To evaluate the flexural properties of repaired poly(methylmethacrylate) (PMMA) denture base materials for computer-aided design/computer-aided manufacturing (CAD-CAM) and to compare them with heat-activated polymerized PMMA. Methods: A total of 288 specimens (65 × 10 × 2.5 mm) were prepared using both CAD-CAM and conventional blocks and repaired using autopolymerizing and visible-light polymerizing
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Reactive oxygen species generation required for autophagy induction during butyrate- or propionate-induced release of damage-associated molecular patterns from dying gingival epithelial Ca9-22 cells J. Oral Sci. (IF 1.9) Pub Date : 2024-03-15 Kiwa Miyake, Yoshikazu Mikami, Takayuki Asayama, Taku Toriumi, Keiji Shinozuka, Morio Tonogi, Yoshiyuki Yonehara, Hiromasa Tsuda
Purpose: Bacterial cells in mature dental plaque produce a high concentration of short-chain fatty acids (SCFAs) such as butyrate and propionate. SCFA-treatment on human gingival epithelial Ca9-22 cells induced cell death. However, the exact mechanism underlying cell death remains unclear. In this study, the relationship between reactive oxygen species (ROS) and autophagy induction during SCFA-induced
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Association between oral health and nutritional status among older patients requiring long-term care who received home-visit dental care J. Oral Sci. (IF 1.9) Pub Date : 2024-03-08 Yutaka Fukuyama, Takamasa Komiyama, Takashi Ohi, Yoshinori Hattori
Purpose: This study examined the association between oral health and nutritional status among older patients receiving home-visit dental care. Methods: This study enrolled 110 older patients (age ≥65 years) requiring long-term care who received home-visit dental care. The oral health indicators evaluated included number of teeth, occlusal support, number of functional teeth, tongue pressure, tongue
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Assessment of the color stability of two silicone elastomers for maxillofacial prostheses upon exposure to cold beverages J. Oral Sci. (IF 1.9) Pub Date : 2024-03-05 Anshul Chugh, Mariko Hattori, Marwa A. Aboelez, Yuka I. Sumita, Noriyuki Wakabayashi
Purpose: This study investigated the color stability of different commercially available silicone materials for facial prostheses upon exposure to everyday beverages. It was hypothesized that the beverages would not alter the color of the silicone under conditions simulating daily exposure. Methods: Sixty specimens were fabricated using two materials – VST-50 and Silfy – and exposed to commercially
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Possible roles of short-chain fatty acids produced by oral bacteria in the development of alveolar osteitis J. Oral Sci. (IF 1.9) Pub Date : 2024-02-29 Takayuki Asayama, Ayaka Takada, Yoshikazu Mikami, Hirofumi Yamaguchi, Muneaki Tamura, Kunihito Matsumoto, Kiwa Miyake, Yoshiyuki Yonehara, Hiromasa Tsuda
Purpose: Alveolar osteitis (dry sockets) is a painful condition characterized by a limited immune response. It is typically caused by the removal of blood clots from extracted tooth sockets, which leads to the fermentation of trapped food remnants by oral bacteria in the cavities, producing high concentrations of short-chain fatty acids (SCFAs). This study examined the effects of SCFAs on immunity
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Elemental composition, corrosion resistance and mechanical properties of computer-aided design and computer-aided manufacturing fixed retainers versus conventional fixed retainers J. Oral Sci. (IF 1.9) Pub Date : 2024-02-23 Yasuhiro Namura, Helen Pullisaar, Heidi Vanessa Holm, Morten Syverud, Aida Mulic, Vaska Vandevska-Radunovic
Purpose: To investigate the elemental composition, corrosion resistance, and mechanical properties of computer-aided design and computer-aided manufacturing (CAD-CAM) retainers versus conventional fixed retainers (FRs). Methods: Eight different retainer wires were investigated. Energy dispersive X-ray spectroscopy was used to determine the elemental composition. Leakage was analysed according to ISO
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Impact of scanning range and image count on the precision of digitally recorded intermaxillary relationships in interocclusal record using intraoral scanner J. Oral Sci. (IF 1.9) Pub Date : 2024-02-23 Yusuke Koshiishi, Shinpei Tanaka, Yotaro Iwauchi, Kazuyoshi Baba
Purpose: The effect of scan range and the number of scanned images on the precision of in vivo intermaxillary relationship reproduction was evaluated using digital scans acquired with an intraoral scanner. Methods: The study involved 15 participants with normal occlusion. Two different interocclusal recording settings were employed using the intraoral scanner (TRIOS 4): 'MIN,' focusing on the minimal
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Evaluation of the root dentin bond strength and intratubular biomineralization of a premixed calcium aluminate-based hydraulic bioceramic endodontic sealer J. Oral Sci. (IF 1.9) Pub Date : 2024-02-08 Yu-Na Lee, Min-Kyeong Kim, Hee-Jin Kim, Mi-Kyung Yu, Kwang-Won Lee, Kyung-San Min
Purpose: This study evaluated the dentin bonding strength and biomineralization effect of a recently developed premixed calcium aluminate-based endodontic sealer (Dia-Root Bio Sealer) in comparison with existing calcium silicate-based sealers. Methods: The root canals of 80 mandibular premolars were filled with Dia-Root Bio Sealer, Endoseal MTA, EndoSequence BC Sealer, and AH Plus Bioceramic Sealer
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Biological and physical properties of calcium hydroxide-based pulp-capping materials and their modifications J. Oral Sci. (IF 1.9) Pub Date : 2024-02-08 Dilek Akin, Cigdem Atalayin Ozkaya, Guliz Armagan, Dervis Birim, Mustafa Ates, Huseyin Tezel
Purpose: To evaluate the biological and physical properties of calcium hydroxide-containing pulp-capping materials and their modifications with different solutions and antioxidant Resveratrol (RES) addition. Methods: Calcium hydroxide+distilled-water:C, calcium hydroxide+saline:S, calcium hydroxide+synthetic tissue fluid:STF, Dycal:D, calcium hydroxide+distilled-water+RES:C+RES, calcium hydroxide+saline+RES:S+RES
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Efficacy of antiseptics for rubber dam sterilization prior to endodontic treatment J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Phanu Jakkrawanpithak, Wifada Powattanasuk, Natthapatt Sooppapipatt, Matsayapan Pudla, Natchalee Srimaneekarn, Naiyana Buranachad, Suraphong Yuma, Sirirak Supa-amornkul
Purpose: This study investigated the efficacy of various antiseptics for disinfection of rubber dams used during endodontic treatment, the duration of disinfection effectiveness, and the disinfection protocol employed by dental schools in Thailand. Methods: The efficacy of 10% povidone-iodine, 1.5% tincture iodine and 70% ethyl alcohol in eliminating Enterococcus faecalis (E. faecalis) and Candida
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Metal component of dental restorations and fixed prostheses in the oral cavity of 43 cases of adults aged 55 years or older in forensic autopsy J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Hiroko Oka, Nami Ohbayashi, Mineka Yoshikawa, Narutaka Katsuya, Naoya Kakimoto, Masataka Nagao
Characterization of the metal component of dental restorations and fixed prostheses is useful for the treatment of dental metal allergies and personal identification. This study aimed to describe the composition of metal elements in dental restorations and fixed prostheses in the oral cavity of 43 cadavers of Japanese adults aged 55 years or older in forensic autopsies conducted at a university. In
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Sixth cranial nerve palsy and trigeminal neuropathic pain due to a space-occupying lesion J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Keita Takizawa, Souichirou Tadokoro, Kana Ozasa, Akiko Okada-Ogawa, Andrew Young, Noboru Noma
Abstract: Various neuropathies of the cranil nerves can accompany trigeminal neuropathic pain attributed to space-occupying lesions. In this case report, the patient presented with persistent intraoral pain and numbness on the right side of the face. Cranial nerve examination revealed dysfunctional eye movements, diplopia, and mechanical hyposensitivity in the mandibular region. The patient was diagnosed
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Monomer release, cell adhesion, and cell viability of indirect restorative materials manufactured with additive, subtractive, and conventional methods J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Zehra Süsgün Yıldırım, Sevde Gül Batmaz
Purpose: The aim of this study was to measure residual monomer, cell adhesion, and cell viability of 3-dimensional printable permanent resin (PR), hybrid ceramic block (HCB), and indirect composite (IC) produced with additive, subtractive, and conventional techniques. Methods: Five 8 × 8 × 2 mm3 samples of each material were prepared for each experiment. In a 24-h period, monomer release was analyzed
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Carbonate apatite increases gene expression of osterix and bone morphogenetic protein 2 in the alveolar ridge after socket grafting J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Tadashi Kitazawa, Hideki Takai, Tetsuro Kono, Hiroyuki Okada, Yorimasa Ogata
Purpose: After tooth extraction, preservation of the alveolar ridge by socket grafting attenuates bone resorption. Runt-related transcription factor 2 (RUNX2) and SP7/Osterix (OSX) are transcription factors playing an important role in osteoblast differentiation. The purpose of this study was to evaluate the effects of carbonate apatite (CO3Ap) on osteoblast-related gene and protein expression after
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Age differences in pain sensitivity and effect of topical lidocaine on the tongue in healthy female subjects J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Ichiro Okayasu, Mizuki Tachi, Takao Ayuse, Hiroyuki Wake, Osamu Komiyama, Antoon De Laat
Purpose: To assess the sensitivity and the effect of topical lidocaine on the tongue by quantitative sensory testing, comparing healthy middle-aged female subjects with healthy young female subjects. Methods: Sixteen healthy female subjects including eight in their fifties and eight in their twenties participated. They participated in two sessions at a 2-week interval in randomized order: lidocaine
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Effects of maxillofacial prosthetic treatment on oral health-related quality of life and masticatory ability of patients with head and neck tumors J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Takahiro Chiba, Kuniyuki Izumita, Shigeto Koyama, Naoko Sato, Ryo Tagaino, Takanori Hatakeyama, Keiichi Sasaki
Purpose: Using multivariate analysis, this study investigated the effectiveness of maxillofacial prosthetic treatment in relation to oral health-related quality of life (OHR-QoL), masticatory ability (food intake status score and gum-jelly test score) and related factors in patients who had undergone surgery for head and neck tumors. Methods: The study cohort comprised 112 patients who underwent surgical
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Use of micro-computed tomography and scanning electron microscopy with energy-dispersive spectroscopy to distinguish natural white spot enamel lesions from sound enamel in human premolars J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Apiwat Chaiwat, Neeranart Thirasupa, Orapin Ajcharanukul
Purpose: The aim of the present study was to develop a novel method for distinguishing white spot lesions (WSLs) from sound enamel in human premolars using micro-computed tomography (micro-CT) and scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS), and to examine differences in surface morphology, chemical composition, and mineral density (MD) between these two areas. Methods:
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Influence of different convergence angles of abutment teeth and cement spaces on internal adaptation of anterior CAD-CAM fixed dental prostheses J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Keigo Ito, Taro Iwasaki, Jin Kitani, Junichi Honda, Kei Kubochi, Futoshi Komine
Purpose: The aim of this study was to investigate the influence of different convergence angles of abutment teeth and different cement spaces on internal adaptation of anterior fixed dental prostheses (FDPs) fabricated with a computer-aided design-computer-aided manufacturing (CAD-CAM) system. Methods: Composite resin FDPs for 99 standardized maxillary central incisors were fabricated according to
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Sociodemographic profiles and career motivations of Australian dental students J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Helen Tran, Fariha Ahmed, Maryam Yousuf, Guun Chan, Rodrigo Mariño, Michael Wylie, Rita Paolini, Federica Canfora, Michael McCullough, Antonio Celentano
Purpose: Prior studies explored factors influencing dental study choice, but shifts from BDSc to DDS degrees in some countries impact demographics and motivations, potentially affecting the dental workforce. The aim of this study was to establish Australian DDS and BOH students’ sociodemographics and career motivations. Methods: Questionnaires conducted in mid-2019 assessed sociodemographic profiles
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Effect of pilot-guided implant placement concept on the accuracy of osteotomy preparation and implant placement J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Shruti Sharma, Emilie Tan, Britney Tran, Hui Y. Siow, Elshadaie Tafesse, Yoong H. J. Thong, Row J. M. Tan, Jungwoo Son, Lisa Todaro, Josephine Teo, Jaafar Abduo
Purpose: To evaluate the accuracy of osteotomy preparation and implant placement for 3 pilot-guided (PG) concepts, namely, a surgical template with a metal sleeve (MS), a surgical template with an in-built nonmetal sleeve (NMS), and a surgical template with an in-built nonmetal sleeve for round bur indentation (RB). Methods: Surgical models with missing maxillary molars were studied. The MS templates
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Reduction of cervical vertebra ghost images in panoramic radiography using vertical dual exposure J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Masao Kato, Shoichi Asakura, Hideaki Kimoto, Tatsuhiko Sasaki, Ko Dezawa, Toshihiko Amemiya, Kunihito Matsumoto, Yoshinori Arai
Purpose: To evaluate the image quality of vertical dual-exposure panoramic radiography (PR), which merges two PR images taken at different focus heights to reduce ghost images of cervical vertebrae (CV) and intervertebral spaces (IVS) in the incisor region. Methods: PR images of an aluminum block, a CV phantom and a human head phantom were taken at 0 mm and merged with and subtracted from PR images
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Assessment of a highly-filled flowable composite for the repair of indirect composites J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Özlem Kanar, Simge Meşeli, Bora Korkut, Serhat Köken, Dilek Tağtekin, Funda Yanıkoğlu
Purpose: To compare the shear-bond-strength (SBS) of a highly-filled-flowable composite (HFFC) and a paste-type composite for indirect composite repair and to evaluate the effect of different surface treatments (ST), concerning the composite repair protocol. Methods: Eighty-four 5 × 5 × 2 mm cylindrical specimens were prepared using Gradia Plus and SR Nexco indirect composite materials. The samples
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Influence of casein phosphopeptide-amorphous calcium phosphate on the surface topography and composition of nickel-titanium archwires during orthodontic treatment with fixed appliances J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Evgenija Markovic, Tamara Peric, Sanja Kojic, Miljan Stosic, Ivana Scepan, Bojan Petrovic
Purpose: To investigate the surface topography and nickel content of nickel-titanium (NiTi) archwires exposed to either routine oral hygiene or a prophylactic regimen with casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) during orthodontic treatment. Methods: This in vivo study involved 40 orthodontic patients with fixed appliances, who were randomly assigned to either a routine oral hygiene
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Analysis of definite awake bruxism using a portable electromyography device J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Kazuhiro Yoshida, Takashi Iida, Yuki Ishii, Osamu Komiyama
Purpose: This study aimed to compare awake bruxism events between subjective and objective evaluations using a questionnaire survey and a modified portable electromyography (EMG) device, and to examine correlations between sleep quality and awake bruxism. Methods: The Epworth Sleepiness Scale (ESS), Pittsburgh Sleep Quality Index (PSQI), and awareness of awake bruxism as clarified via interviews were
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Vertical magnification correction in vertical dual-exposure panoramic radiography J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Hideaki Kimoto, Shoichi Asakura, Tatsuhiko Sasaki, Ko Dezawa, Toshihiko Amemiya, Kunihito Matsumoto, Yoshinori Arai
Purpose: To clarify the magnification error caused by the degree of tilt of the incisor and the elevation of the X-ray focus position, and the verification effect of magnification correction when performing vertical dual-exposure panoramic radiography. Methods: Panoramic radiographic images of a phantom embedding 26 steel balls were taken at different heights (0, 5, 10, 15, and 20 mm) and tilt angles
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An observational study of oral functions in patients aged from 20 to 49 years J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Kazuhiko Yoshioka, Yoichiro Ogino, Masahiro Kawasaki, Yasunori Ayukawa
Purpose: The purpose of this study was to analyze oral functions (MOF: maximum occlusal force; MTP: maximum tongue pressure; and MF: masticatory function) in Eichner A subjects aged from 20 to 49 years. Methods: The data of three oral functions in Eichner A patients aged from 20 to 49 years were extracted. The mean values, subjects with lower values than the thresholds, and the differences among ages
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Use of an intraoral scanner and CAD-CAM for simultaneous restoration with a personalized titanium post-core and a zirconia crown J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Ling Lin, Yingying Zhuo, Pingping Cai, Xi Chen, Zhiqiang Zheng, Jie Lin
Customized posts-and-cores have been widely used for improved fitness within a prepared post space. However, in comparison to direct restoration, they necessitate an increased number of appointments for patients. A 24-year-old man presented with a maxillary left canine that had fractured due to trauma 10 months previously. For this case, a digital process was used for simultaneous restoration with
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Case report of a patient with mandibulectomy followed up for 11 years J. Oral Sci. (IF 1.9) Pub Date : 2024-01-16 Ziyi Bai, Mariko Hattori, Yuka I. Sumita, Noriyuki Wakabayashi
Mandibular deviation and rotation following mandibulectomy can significantly impact oral function and quality of life. The postoperative course of a 57-year-old patient who underwent mandibulectomy for oral cancer and findings over 11 years of follow-up observation to monitor changes in the mandibular position are described here. Based on the observations, it is important to raise awareness regarding
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Apically extruded debris, canal transportation, and shaping ability of nickel-titanium instruments on contracted endodontic cavities in molar teeth J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Qinqin Zhang, Jingyi Gu, Jiadi Shen, Ming Ma, Ying Lv, Xin Wei
Purpose: Apically extruded debris, canal transportation and shaping ability were compared between contracted endodontic cavities (CECs) and traditional endodontic cavities (TECs) after instrumentation with XP-endo Shaper (XPS), ProTaper Gold (PTG), ProTaper for hand-use (HPT) and Hero Shaper. Methods: The CECs or TECs groups were sub-divided into 24 groups according to root canal morphology and nickel-titanium
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Usefulness of the masticatory score by occlusal support J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Hiroshi Shiga, Mako Sano, Kazue Chigiri, Kyoko Tamura, Yayoi Terabe, Hideyuki Nimura
This study aimed to clarify the usefulness of masticatory score by occlusal support. A total of 605 adults were classified into four groups (A1, A2A3, B, and C) according to the Eichner classification, and the relationship between the amount of glucose eluted and masticatory score was investigated in each group. A significant correlation between the glucose eluted and masticatory score was observed
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Efficacy of the HBW Ultrasonic Ring for retrieval of fragmented manual or rotatory instruments J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Jennifer Galván-Pacheco, Verónica Méndez-González, Ana González-Amaro, Heriberto Bujanda-Wong, Amaury Pozos-Guillén, Arturo Garrocho-Rangel
Abstract: A study was conducted to evaluate the success rates of bypassing or removing fragments of instruments that had fractured within the roots of mandibular molars using a HBW Ultrasonic Ring. Forty extracted first permanent mandibular molars with root canal curvature were included. The teeth were distributed randomly into four groups according to the type of instrument and the root canal third
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Evaluation of the marginal integrity of various pit and fissure sealants J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Bilal Yaşa, Özlem Erçin, Hüseyin Hatırlı
Purpose: To evaluate the marginal integrity of various pit and fissure sealants subjected to different application methods. Methods: A total of 253 non-carious human third molars extracted and randomly divided into two groups according to the preparation method employed: invasive or non-invasive. Eight fissure sealant materials were tested: nano-filled flowable composite (Filtek Ultimate Flow), nanohybrid
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Amount of toothpaste used by dental students J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Shekev Limacher, Lea Angst, Murali Srinivasan
Purpose: This study analyzed associations of cumulative learning, demographic characteristics, fluoride content, and toothbrush head size with the amount of toothpaste used by dental students. Methods: Students in the third and fifth year of dental school were recruited. Each participant was asked to dispense three toothpastes (pediatric, regular fluoride, and high fluoride) on five toothbrushes (
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Atomoxetine and escitalopram migrate the derangement of the temporomandibular joint morphologic and histologic changes in rats exposed to stress-induced depression J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Thanatta Songphaeng, Sarawut Lapmanee, Sakkarin Bhubhanil, Kamonchanok Momdee, Catleya Rojviriya, Kemporn Kitsahawong, Pattama Chailertvanitkul, Jariya U. Welbat, Supawich Morkmued
Purpose: The purpose of this in vivo study was to determine the effects of stress-induced depression and antidepressants on depressive-like behavior, microstructure, and histomorphology of the temporomandibular joint (TMJ) using rats. Methods: Experimentally induced depression in rats was created before being treated with two antidepressants; escitalopram (selective-serotonin-reuptake inhibitors) and
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Investigation of mandibular second molar root and canal morphology in a Black South African population using cone-beam computed tomography and two classification systems J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Glynn D. Buchanan, Mohamed Y. Gamieldien, Inger Fabris-Rotelli, Albert van Schoor, Andre Uys
Purpose: To investigate the root and canal morphology of mandibular second molars, including anatomical variations, in a Black South African population using two classification systems. Methods: Cone-beam computed tomography images of 386 teeth were evaluated. The number of roots and canal configurations were categorized using the classifications of Vertucci (with modifications by Sert and Bayirli)
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Effect of bleaching on the color match of single-shade resin composites J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Eleonora Forabosco, Ugo Consolo, Claudia Mazzitelli, Shaniko Kaleci, Luigi Generali, Vittorio Checchi
Purpose: To evaluate the color match of single-shade resin composites before and after bleaching procedures, through instrumental and visual analyses. Methods: Class V cavities were created on the buccal surfaces of 80 extracted human molars, restored with 4 single-shade composites (Omnichroma; Clearfil Majesty ES-2 Universal; Essentia Universal; Venus Diamond One). A spectrophotometer (VITA Easyshade
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Gender and age effects on dental and palatal arch dimensions among full siblings J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Yong S. Mei, Alizae M. F. Syed Mohamed, Murshida Marizan Nor, Tanti I. Rosli
Purpose: This study was conducted to investigate the dental and palatal arch dimensions of male and female siblings in relation to gender and age, using three-dimensional (3D) digital casts. Methods: This study involved 54 subjects (27 pairs) of male-female siblings aged 15 to 45 years. Dental casts were digitized and analyzed for tooth size (TS), arch width (AW), arch length (AL), arch length discrepancy
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Masticatory performance with one missing molar J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Masaoki Yokoyama, Hiroshi Shiga, Kunihisa Nakajima, Hanako Uesugi, Marie Komino, Mako Sano, Akira Takakusaki, Yukinori Iwanami, Kenichiro Kojima, Etsuro Hanawa
Purpose: This study aimed to evaluate masticatory performance in cases where one molar was missing. Methods: Participants were 156 adults with one molar missing from their natural teeth, who were divided into group A (without prosthetic treatment) and group B (with prosthetic treatment). The non-missing side was designated as A1 or B1, and the missing side was designated as A2 or B2. The amount of
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Effects of different toothpastes on the color and whiteness of stained anterior composite resin J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Başak Yazkan, Ebru Yilmaz, Özge Gizem Yenidünya, Nilgün Akgül
Purpose: To evaluate changes in the color of an anterior nanohybrid composite resin and differences in its whitening index after 30 days of brushing with six brands of whitening toothpaste in vitro to simulate the situation in individuals with high coffee consumption. Methods: Eighty-four disk-shaped resin specimens were prepared (shade A2). For initial staining, the samples were immersed in coffee
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Effect of sitting posture with and without sole-ground contact on chewing stability and masticatory performance J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Kiwamu Sakaguchi, Noshir R. Mehta, Tomoaki Maruyama, Leopoldo P. Correa, Atsuro Yokoyama
Purpose: To verify the effect of sitting posture with and without sole-ground contact on chewing stability and masticatory performance. Methods: Thirty healthy subjects were evaluated. The Conformat was used to analyze the center of sitting pressure (COSP), and the three-dimensional motion analysis system was used to analyze changes in head and trunk postures while subjects remained in a sitting position
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Three-dimensional analysis for detection of pulp stones in a Saudi population using cone beam computed tomography J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Hassan H. Kaabi, Abdullah M. Riyahi, Nassr S. Al-Maflehi, Saleh F. Alrumayyan, Abdullah K. Bakrman, Yazeed A. Almutaw
Purpose: To assess the prevalence and distribution of pulp stones in a Saudi population. Methods: A cone beam computed tomography (CBCT) analysis of 150 upper and 150 lower dental arches was performed. The relationships between pulp stones and age, sex, tooth type, dental arch, orthodontic treatment, caries, and restoration were statistically examined (P < 0.05). Results: A total of 295 dental arches
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Effect of build orientation on the trueness of occlusal splints fabricated by three-dimensional printing J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Andrew B. Cameron, Keith Tong, Santosh Tadakamadla, Jane L. Evans, Menaka Abuzar
Purpose: Scientific evidence pertaining to the evaluation of trueness of occlusal splints fabricated using different three-dimensional (3D) printers and build orientations compared to subtractive technologies is lacking. Methods: Overall, one hundred and ten occlusal splints were manufactured using two different 3D printers and a dental mill. Five groups of ten were fabricated using the 3D printers
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The biomechanical stability of miniplate osteosynthesis configurations in bilateral mandibular angle fractures J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Nida Ay, Senem Yildirimturk Dogan, Yigit Sirin
Purpose: The present study investigated the biomechanical stability of three miniplate osteosynthesis configurations used for internal fixation of bilateral mandibular angle fracture (BMAF). Methods: Standard fracture lines were created in 72 polyurethane mandibles and stabilized with 2.0-mm, 4-hole standard titanium miniplates and monocortical screws. The group descriptions and miniplate configurations
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Effectiveness of curcumin-based antimicrobial photodynamic therapy against Staphylococcus aureus J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Uno Imaizumi, Keitaro Inaba, Ayako Kurahashi, Hidetaka Kuroda, Takuro Sanuki, Ayaka Yoshida, Fumihiko Yoshino, Nobushiro Hamada
Purpose: This study investigated the effectiveness of curcumin-based antimicrobial photodynamic therapy (aPDT) against Staphylococcus aureus (S. aureus), the causative agent of ventilator-associated pneumonia. Methods: Curcumin was added to S. aureus culture medium at concentrations of 25, 2.5, and 0.25 µM. After 60 min (20-25°C), each culture was irradiated for 1 and 3 min, and viable bacteria were
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A case of sclerosing odontogenic carcinoma of the mandible with a review of the literature J. Oral Sci. (IF 1.9) Pub Date : 2023-10-01 Naoya Kinoshita, Hirofumi Tomioka, Yu Oikawa, Yuki Fukawa, Tohru Ikeda, Hiroyuki Harada
Abstract: Sclerosing odontogenic carcinoma (SOC) is a very rare malignant odontogenic tumor characterized by sclerotic stroma and single-file cord-like tumor cell structures. A 38-year-old man presented with extraoral swelling and right mental region paralysis. Panoramic radiography revealed an ill-defined radiolucent lesion extending from the right mandibular ramus to the right lower canine. Magnetic
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Path pattern and movement during mastication on habitual and non-habitual chewing sides J. Oral Sci. (IF 1.9) Pub Date : 2023-07-01 Hiroshi Shiga, Kunihisa Nakajima, Ayano Ishikawa, Marie Komino, Hanako Uesugi, Masaoki Yokoyama, Kiyohei Hayashi, Yoshitaka Takeda, Akira Hagiwara, Yukio Nakano
Purpose: To clarify the presence or absence of differences in path pattern and movement during mastication between the habitual and non-habitual chewing sides. Methods: Participants were 225 healthy adults with natural dentition. Mandibular movement while chewing gummy jelly on each side was recorded, and masticatory path pattern was classified into five types (one normal and four abnormal). The frequency
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Combined effect of apigenin and reduced graphene oxide against Enterococcus faecalis biofilms J. Oral Sci. (IF 1.9) Pub Date : 2023-07-01 Mi-Ah Kim, Kyung-San Min
Purpose: Enterococcus faecalis (E. faecalis) is one of the major microorganisms that causes failure of endodontic treatment. This study aimed to investigate the antibacterial activity of apigenin and its synergistic effect with reduced graphene oxide (RGO) in treating E. faecalis biofilms. Methods: The antibacterial activities were characterized by viability analysis including colony forming units
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Concentration-dependent effect of carboxymethyl chitosan amorphous calcium phosphate on the surface hardness of primary tooth enamel J. Oral Sci. (IF 1.9) Pub Date : 2023-07-01 Theodora Elien, Heriandi Sutadi, Margaretha Suharsini
Purpose: To compare the effects of gels containing 2.5% and 5% carboxymethyl chitosan amorphous calcium phosphate (CMC-ACP) on the microhardness of primary tooth enamel. Methods: Twenty-four tooth specimens were demineralized with 37% phosphoric acid and divided into four groups: an untreated control group, a positive control group treated with casein phosphopeptide amorphous calcium phosphate, and
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Clinical performance of two onlay designs for molars after root canal treatment J. Oral Sci. (IF 1.9) Pub Date : 2023-07-01 Shujiang Chen, Meng Lu, Zhimin Zhu, Wenchuan Chen
Purpose: To evaluate the clinical performance of two proposed onlay designs. Methods: Molars with occlusal and/or mesial/distal defects after root canal treatment were classified by design into three groups. Onlays without shoulders were the control group (Group C, n = 50). The designed onlays were Group O (n = 50) and the designed mesio-occlusal/disto-occlusal onlays were Group MO/DO (n = 80). All
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A nested case-control study of factors contributing to the development of medication-related osteonecrosis of the jaw in patients using bone resorption inhibitors in Mishima City J. Oral Sci. (IF 1.9) Pub Date : 2023-07-01 Keisuke Seki, Atsushi Kamimoto, Maki Wada, Toshimitsu Iinuma
Purpose: Medication-related osteonecrosis of the jaw (MRONJ) is characterized by necrosis of the jawbone with intraoral bacterial infection and has a significant negative impact on oral health-related quality of life. Risk factors for the onset are unknown, and definitive therapeutic approaches have not yet been defined. A case-control study at a single institution in Mishima City was conducted. The
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Occlusion of dentinal tubules on periodontally involved teeth by dentifrice containing stannous fluoride and sodium fluoride J. Oral Sci. (IF 1.9) Pub Date : 2023-07-01 Çiğdem Doğan, Hatice S. Yıldırım, Hare Gürsoy, Leyla Kuru
Purpose: This study examined the occlusion effect of a dentifrice containing stannous fluoride (SnF2) and sodium fluoride (NaF) on periodontally involved teeth in comparison with healthy teeth using scanning electron microscopy (SEM) in comparison with a dentifrice containing NaF alone. Methods: Sixty dentine samples obtained from single-rooted premolars, 15 of them extracted for orthodontic reasons
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Effects of tetrabutylammonium dihydrogen trifluoride etchant on bond strengths of resin composites with Ti-6Al-4V and Co-Cr alloys J. Oral Sci. (IF 1.9) Pub Date : 2023-07-01 Kohji Kamada, Yohsuke Taira, Takafumi Egoshi, Kei Kaida
Purpose: This study aimed at evaluating the effects of surface treatments with tetrabutylammonium dihydrogen trifluoride (TDTF) on the bond strengths of indirect resin composites with titanium-aluminum-vanadium (Ti-6Al-4V) and cobalt-chromium (Co-Cr) alloys. Methods: Disk-shaped Ti-6Al-4V and Co-Cr alloy specimens were air-abraded with alumina, treated with an etchant (MEP) containing TDTF for 10 s
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Evaluation of machine-assisted irrigation on removal of intracanal biofilm and extrusion of sodium hypochlorite using a three-dimensionally printed root canal model J. Oral Sci. (IF 1.9) Pub Date : 2023-07-01 Ji-Yoon Shin, Mi-Ah Kim, Hee-Jin Kim, Prasanna Neelakantan, Mi-Kyung Yu, Kyung-San Min
Purpose: This study aimed to compare the biofilm removal and apical extrusion of sodium hypochlorite (NaOCl) following machine-assisted irrigation using a three-dimensionally (3D) printed dentin-insert model. Methods: Multispecies biofilms were formed in a 3D-printed curved root canal model with dentin insert. The model was then placed in a container that was filled with 0.2% agarose gel containing
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Citral-rich fractions of Lippia alba essential oils as immunoresponsive and anti-Candida albicans additives for collagen membranes in guided bone regeneration J. Oral Sci. (IF 1.9) Pub Date : 2023-07-01 Nohora C. Rugeles-Páez, Wendy L. Quintero, Elena E. Stashenko, Liliana T. García
Purpose: The aim of this study was to optimize the immunoresponsive and anti-Candida albicans (C. albicans) properties of guided bone regeneration-resorbable membranes (collagen) using additives based on synergistic mixtures of chlorhexidine with terpene-enriched fractions from Lippia alba essential oils (EO). Methods: The anti-C. albicans activity of the fractions (individually or combined with chlorhexidine)
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The effect of ultrasonic vibration protocols for cast post removal on the incidence of root dentin defects J. Oral Sci. (IF 1.9) Pub Date : 2023-07-01 Giulliano C. Serpa, Orlando A. Guedes, Neurinelma S. S. Freitas, Julio A. Silva, Carlos Estrela, Daniel A. Decurcio
Purpose: To investigate the effects of two ultrasonic vibration protocols for cast post removal (single or double ultrasound units) on the development of defects in root dentin. Methods: Sixty bovine incisors were selected. Fifteen roots were left unprepared (control). Forty-five roots were instrumented and filled. A 10-mm post space was prepared using #1-4 Largo drills. Fifteen teeth were prepared
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Validity of analysis of masticatory movement using a two-dimensional mandibular movement recording device J. Oral Sci. (IF 1.9) Pub Date : 2023-07-01 Masaoki Yokoyama, Hiroshi Shiga, Marie Komino, Hanako Uesugi, Mako Sano, Tohru Naitoh
To clarify the validity of analysis of masticatory movement using a two-dimensional (2D) mandibular movement recording device, masticatory movements (pattern of movement path, opening distance, masticatory width, and cycle time) were compared between simultaneous recordings made by 2D and three-dimensional (3D) devices in healthy adults. The 2D device can perform the same level of mandibular movement
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Esthetic preferences of orthodontists, dentists, and plastic surgeons for balanced facial profiles J. Oral Sci. (IF 1.9) Pub Date : 2023-03-30 Jovana Milutinovic, Ema Aleksic, Stevan Avramov, Katarina Kalevski, Milica Gajic, Djordje Pejanovic, Jasmina Milic
Purpose: The aim of this investigation was to determine whether the facial esthetics of subjects rated as “attractive” can be related to specific cephalometric soft tissue parameters. Methods: The profile silhouettes of 100 subjects (45 males and 55 females) were rated by 60 esthetics specialists (20 orthodontists, 20 dentists, and 20 plastic surgeons) using a Likert scale, and 30 of the subjects were
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Insulin facilitates synaptic transmission via gap junctions between fast-spiking interneurons in the rat insular cortex J. Oral Sci. (IF 1.9) Pub Date : 2023-03-30 Satoshi Kosukegawa, Yuka Nakaya, Satomi Kobayashi, Kohei Kitano, Sachie Matsumura, Shohei Ogisawa, Manabu Zama, Mitsuru Motoyoshi, Masayuki Kobayashi
Purpose: Inhibitory synaptic currents from fast-spiking neurons (FSNs), a typical gamma-aminobutyric acid (GABA)ergic interneuron in the cerebral cortex, to pyramidal neurons are facilitated by insulin. FSNs frequently show electrical synapses to FSNs, however, the effect of insulin on these electrical synapses is unknown. The aim of this study was to evaluate effects of insulin on electrical synaptic
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Effect of intra-radicular cleaning protocols after post-space preparation on marginal adaptation of a luting agent to root dentin J. Oral Sci. (IF 1.9) Pub Date : 2023-03-30 Luciana C. Boggian, Ana V. Silva, Geovana R. Santos, Geovanna F. Oliveira, Winston L. Silva, Ismar Nery Neto, Orlando A. Guedes, Carlos Estrela
Purpose: To evaluate the effect of intra-radicular cleaning protocols after post-space preparation (PSP) on marginal adaptation of a luting agent to root dentin. Methods: Eighty bovine incisors were sectioned transversely to obtain 18-mm-long root sections. The roots were prepared with ProTaper instruments and filled using Tagger’s hybrid technique. PSP was performed at a length of 14 mm using #3-5
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Tooth extraction prior to radiotherapy for oropharyngeal cancer increases the risk of osteoradionecrosis J. Oral Sci. (IF 1.9) Pub Date : 2023-03-30 Sigve Slettvoll, Rasmus C. Thaning, Torbjørn Ø. Pedersen
Purpose: Osteoradionecrosis of the jaw is a therapy-resistant condition that may occur after treatment for head and neck cancer. The aim of this study was to investigate the incidence of osteoradionecrosis in patients with oropharyngeal cancer in relation to tooth extraction prior to radiation therapy. Methods: Patients who had undergone radiation therapy for oropharyngeal cancer 5-10 years earlier