Statement of problem Milling is a well-established method for manufacturing prosthetic frameworks. However, information about the influence of ceramic veneer and spark erosion on the accuracy of the all-on-six complete-arch fixed frameworks manufactured from different materials is lacking. Purpose The purpose of this in vitro study was to compare the accuracy of milled complete-arch fixed frameworks

An open protocol is described for the evaluation of implant deviation by using digital casts. A digital surgical planning cast and a definitive cast are imported into a reverse engineering software program, and cylinders are created as simplifications of the implants. After superimposing the digital casts, implant deviations can be calculated by using the coordinates of the cylinders. This protocol

Statement of problem The accuracy of intraoral and extraoral scanners for different models of edentulousness is unclear. Purpose The purpose of this in vitro evaluation was to determine the accuracy (trueness and precision) of complete-arch scans made by 3 intraoral and 1 extraoral scanners compared with an industrial 3D scanner. Material and methods Digital scans were made of a reference cast with

Statement of problem Occlusal devices, particularly the stabilization appliances, have been commonly used as treatment for painful temporomandibular disorders (TMDs). However, the mechanisms of action of these devices are still unclear, including the role of the placebo effect in the pain management. Purpose The purpose of this network meta-analysis was to identify to what extent the degree of efficacy

Making an intraoral digital scan for fixed mandibular implant-supported complete-arch prostheses is a clinical challenge. The absence of references in the mandibular arch for precise scan alignment may complicate the correct digital design of the prosthesis framework. This article presents a straightforward method that allows a completely digital approach to digital scanning for fixed mandibular implant-supported

Statement of problem The effect of prophylactic polishing pastes on composite resin materials has been extensively investigated, but little is known about their effect on ceramic materials. Purpose The purpose of this in vitro study was to evaluate the effect of prophylactic polishing pastes on the 2D and 3D roughness, translucency, and gloss of different ceramic materials. Material and methods A total

Statement of problem Because few 3D-printing resins have been specifically developed for liquid crystal display (LCD) 3D printers, mono-LCD users may use digital light processing (DLP) 3D-printing resins. However, the suitability of these resins requires evaluation. Purpose The purpose of this in vitro study was to evaluate whether 3D-printing resins designed for DLP 3D printers can be used successfully

Statement of problem Consumption of some beverages and aging may affect the color of dental materials used in fixed prosthodontics, but their effect on recently introduced materials is not well known. Purpose The purpose of this in vitro study was to evaluate staining, aging, and the exposure interval on color changes of computer-aided design and computer-aided manufacturing (CAD-CAM) resin nanoceramics

Statement of problem The flexural strength of zirconia restorations is partially dependent on the sintering process. Changes in sintering protocols as well as hydrothermal aging may affect the flexural strength of zirconia materials. Purpose The purpose of this in vitro study was to investigate how changes in sintering parameters and hydrothermal aging affect the biaxial flexural strength of monolithic

Statement of problem The optical properties of esthetic computer-aided design and computer-aided manufacturing (CAD-CAM) materials can change depending on the clinical situation. Studies that compare esthetic CAD-CAM materials based on their optical properties are lacking. Purpose The purpose of this in vitro study was to evaluate the optical properties of esthetic CAD-CAM specimens after ultraviolet

Statement of problem The separation of a denture liner from the denture base can be a clinical problem. Different surface treatments to increase the bond have been evaluated, but studies comparing the effect of argon plasma and erbium-doped yttrium aluminum garnet (Er:YAG) laser on the bond between acrylic resin and a denture liner are lacking. Purpose The purpose of this in vitro study was to evaluate

Statement of problem The addition of palatal rugae to complete dentures has been suggested to improve the satisfaction of patients with different oral functions. However, clinical studies to support these claims are lacking. Purpose The purpose of this randomized, single-blind, 2-period crossover trial was to assess the satisfaction of edentulous patients and their oral health impact profile when provided

Statement of problem The performance of the autogenous bone ring (ABR) technique used for the vertical bone augmentation procedure has not yet been determined. Purpose The purpose of this systematic review was to investigate whether the ABR technique for the vertical bone augmentation procedure with simultaneous implant placement enhances the histologic and histomorphometric outcomes in surgically

Statement of problem Synchronous online prosthodontic courses became a popular learning mode during the 2020 COVID-19 pandemic crisis. Nonetheless, the extent of learner participation and completion of these courses remains unknown. Purpose The purpose of this study was to assess learner behaviors in synchronous online prosthodontic continuing education lectures in China during the 2020 COVID-19 pandemic

Statement of problem The flexural strength of computer-aided design and computer-aided manufacturing (CAD-CAM) and conventional interim resin materials when they are used with a surface sealant is unclear. Purpose The purpose of this in vitro study was to evaluate the flexural strength of different CAD-CAM polymethyl methacrylate (PMMA)-based polymers and conventional interim resin materials, autopolymerized

Statement of problem Long-term clinical data on the survival of pressed lithium disilicate glass ceramic when used with partial coverage restorations and the effect that different technical and clinical variables have on survival are sparse. Purpose The purpose of this clinical study was to determine the 10.9-year survival of pressed lithium disilicate glass ceramic partial coverage restorations and

Statement of problem Xerostomia refers to the decrease in the quality and quantity of saliva. In denture wearers, xerostomia affects the retention of the denture because of lack of wettability of the denture base. However, which denture base resin materials are best wetted by artificial salivary substitutes is unclear. Purpose The purpose of this in vitro study was to determine the wetting properties

Statement of problem Immediate implant-supported restorations have become a common treatment strategy in the esthetic zone; however, improvements are necessary in the techniques used to fabricate interim prostheses. Purpose This clinical study evaluated an alternative method for the immediate restoration of anterior teeth by using a fully guided template. Material and methods Twenty-five participants

Statement of problem Lithium disilicate (LD) is a popular dental ceramic and has been a focus of dental research. Nevertheless, a quantified literature analysis focusing on the research of lithium disilicate is lacking. Purpose The purpose of this bibliometric analysis was to review the progress of research into lithium disilicate in dentistry, including the identification of contributing researchers

Dental fluorosis and hypocalcification manifest as white spot lesions and/or brown discolorations. With dental fluorosis, mottled layers in enamel can also be present depending on severity. Treatment options have varied in such situations, depending on severity, and can range from conservative to more invasive. This clinical report focuses on a combination of bleaching and resin infiltration as one

Statement of problem Long-term clinical data are lacking on the comparison of the survival of adhesively luted pressed e.max lithium disilicate glass ceramic complete and partial coverage restorations in posterior dentitions and the effect that different technical and clinical variables have on their survival. Purpose The purpose of this clinical study was to examine and compare the 16.9-year survival

Statement of problem Magnetic resonance imaging (MRI) is a cross-sectional imaging technique that is widely used in the detection of pathologies in the head and neck region. However, information is lacking about the effect of MRI imaging on the clinical success of fixed partial dentures (FPDs). Purpose The purpose of this in vitro study was to analyze the effect of MRI on the physical properties and

Single-use plastics in dentistry are significant contributors to biomedical waste. Various plastic tubes and mixing cartridges with different plastic mixing tips are widely used for elastomeric impression materials. To minimize the dental plastic footprint, a technique is described for making reusable plastic mixing tips for elastomeric impression materials.

Statement of problem Data on the oral cancer screening skills and beliefs of prosthodontists practicing in Saudi Arabia are lacking. Purpose The purpose of this survey was to assess the beliefs, experiences, and practices of prosthodontists practicing in Saudi Arabia regarding the early detection of oral cancer and potentially malignant disorders. Material and methods A cross-sectional, questionnaire-based

Statement of problem Accessory canals of the canalis sinuosus, a bony canal carrying the anterior superior alveolar nerve and vessels, can often be present but overlooked in the anterior maxilla. Dental implant placement in this area may damage neurovascular branches if this anatomic variation is not carefully identified, resulting in unexpected complications. Purpose The purpose of this retrospective

Clinical challenges occur when treating patients with maxillofacial defects with digital technology. This report describes a technique that combines intraoral scanning to fabricate a milled record base along with the conventional processing to fabricate a definitive maxillary obturator prosthesis.

Statement of problem A consensus on whether or how to treat eroded dentin to bond to composite resins is lacking. The role of gels containing chlorhexidine (CHX), epigallocatechin-3-gallate (EGCG), and proanthocyanidin (PAC) in controlling erosive wear progression needs to be evaluated for bonding. Purpose The purpose of this in vitro study was to evaluate the effect of gels containing antiproteolytic

Statement of problem Increasing occlusal vertical dimension (OVD) is often indicated in complex prosthodontic rehabilitations to gain restorative space and improve the occlusal relationship and esthetics. The effect of increasing occlusal vertical dimension on lower facial height (distance from subnasale to soft-tissue menton) and perceived facial esthetics is not well understood. Purpose The purpose

A technique to merge facial and intraoral digital scans guided by an additively manufactured intraoral scan body is described. The technique facilitates facially driven treatment planning of restorative procedures in situations where a cone beam computed tomography scan is not indicated. Furthermore, the intraoral scan body can be customized to the size of the patient’s arch to improve patient comfort

Statement of problem The best protocol to restore endodontically treated teeth is still unclear, with many factors to be considered, including the selection and necessity of a post, the type of coronal restoration, the amount of remaining coronal structure, and the type of luting agent. Purpose The purpose of this systematic review was to assess the restorative preferences for endodontically treated

Adult patients with bilateral cleft lip and palate present unique challenges for prosthodontic treatment because of mobility of the premaxillary segment, oral-nasal communication, multiple missing and malpositioned anterior teeth, unfavorable soft tissues, and scar tissue underneath the maxillary lip. This clinical report describes the prosthodontic treatment of an adult patient with a terminal maxillary

Artifacts from metal restorations can make it challenging or impossible to accurately orient a digital dental cast to cone beam computed tomography (CBCT) scan data for virtual implant planning. A dual scan technique is described that uses an alginate impression with fiducial markers in a stock tray to create a digital dental cast that is precisely oriented to the scan in the same patient coordinate

Statement of problem Screw loosening is a common problem in implant dentistry; however, information is sparse on the influence of different fluids on the screw threads. Purpose The purpose of this in vitro study was to investigate the influence of 4 different fluids and agents (saliva, blood, chlorhexidine [CHX] gel, and special sealing silicone) on the preload force of abutment screws. Materials and

Statement of problem Whether treatment with an implant-supported fixed partial prosthesis (ISFPP) affects the masticatory rhythm in patients with unilateral posterior missing teeth is unclear. Purpose The purpose of this prospective clinical study was to determine the change in masticatory rhythm in participants with unilateral posterior missing teeth 3 months after treatment with an ISFPP and to assess

Statement of problem Interim restorations represent an essential clinical treatment step; however, limited information is available concerning the performance of computer-aided design and computer-aided manufacturing (CAD-CAM) interim materials. Purpose The purpose of this in vitro study was to evaluate the performance and fracture load of resin anterior implant-supported interim fixed partial dentures

Statement of problem Although contemporary analytical methods are available for application to data which exhibit a lack of equality of variances or a lack of normality in the error distribution, little guidance is provided for selecting the methods of data handling and analysis which best fit color difference data for stained esthetic materials. Purpose The purposes of this in vitro study were to

Statement of problem How different methods of recording posterior palatal seal affect removable complete-denture retention and oral health quality of life is unclear. Purpose The purpose of this clinical study was to compare the retention and oral health quality of life (OHIP-14) between conventional and arbitrary posterior palatal seal techniques in participants with removable complete dentures. Material

Precise preparation of guiding planes is essential for removable partial dentures (RPDs). This report introduces a metal template fabricated by computer-aided design and computer-aided manufacturing (CAD-CAM) to help prepare guiding planes for RPDs.

Statement of problem Although studies have reported the accuracy of 3D-printed dental casts, studies addressing cast distortion throughout the complete-arch range are lacking. Purpose The purpose of this in vitro study was to evaluate the dimensional accuracy of different areas in complete-arch casts made with various 3D printing methods. Material and methods A computer-aided design (CAD) reference

A technique to additively manufacture an occlusal device by using a completely digital workflow is described. Using a computer-aided design program, information captured with an intraoral scanner was used to additively manufacture a dual-material occlusal device by using a vat-polymerization printer. This technique allows for the combination of 2 different materials, resulting in an occlusal device

Patients undergoing partial rhinectomy with limited size may have the major portion of the nasal structure preserved. However, the fibrosis or scar formation after the surgery may cause distortion of remaining tissues, followed by nasal airway obstruction. By physically expanding an affected nostril during the impression and using digital technology to design a custom flexible internal nasal dilator

Statement of problem Bone loss in the edentulous posterior maxilla complicates dental implant placement. In spite of the evidence available, there is continued uncertainty about the benefit of short implants for different outcomes. Purpose The purpose of this review was to evaluate the existing evidence for short and standard implants in association with sinus floor elevation regarding implant survival

Statement of problem The fracture incidence of implant-supported overdentures is more frequent in the area of attachment because of stress concentration and denture deformation in this area. How E-glass fiber reinforcement can address this problem is unclear. Purpose The purpose of this in vitro study was to evaluate the influence of unidirectional E-glass fiber reinforcement on the mid-line denture

Statement of problem Fully digital dentistry is contingent on an accurate digital scan of the complete arch; however, the dimensional accuracy of different scanners for digitizing a complete arch is unclear. Purpose The purpose of this in vitro study was to compare the accuracy of 2 intraoral scanners, TRIOS 3 (TR) and CEREC Omnicam (OC). Accuracy was assessed from changes to reference distances defined

Statement of problem A consensus about the effect of crown-to-implant (C/I) ratio in single crowns regarding the implant survival rate and marginal bone loss (MBL) is lacking. Purpose The purpose of this systematic review and meta-analysis was to evaluate the influence of C/I ratio in implant-supported single crowns on clinical outcomes. Material and methods The search was made in the PubMed/MEDLINE

Statement of problem Digital and conventional options for definitive impressions and for the fabrication of fixed dental prostheses (FDPs) have been compared in previous studies. However, a comprehensive review with concluding data that determined which method provided the minimal internal and marginal adaptation is lacking. Purpose The purpose of this systematic review and meta-analysis of in vivo

Statement of problem Published data have shown that a mechanical surface treatment of titanium surfaces increases bonding potential. However, most of the studies are based on shear or tensile tests performed on flat-surfaced specimens and do not take into consideration the retention given by the titanium base (ti-base) axial walls and the thermomechanical loading seen in a clinical setting. Purpose

A fully digital workflow for the design and manufacture of prostheses for maxillectomy defects was described. Three-dimensional images from spiral computed tomography and intraoral scanning were used to generate a three-dimensional digital cast of a maxillectomy defect. The obturator prosthesis was then designed on the digital cast by combining dental computer-aided design and reverse engineering software

Statement of problem A consensus on the clinical performance in dental implants placed with different insertion torques is lacking. Purpose The purpose of this systematic review and meta-analysis was to evaluate the effect of high insertion torque compared with regular or low torques during dental implant placement in terms of implant survival rate and marginal bone loss. Material and methods Two independent

The rehabilitation of patients with severely resorbed mandibular ridges can be a clinical challenge when rehabilitation with endosteal implants is not the elected treatment. Historically, weighted mandibular complete dentures have been used successfully to manage patients with severely resorbed ridges, and the weight of their cast metal has been calculated by using the weight of the wax and the density

Statement of problem Prosthetic complications have been frequently reported in implant-supported complete-arch prosthesis. Prosthetic restorations designed with an all-on-four treatment concept and fabricated from zirconia ceramic may be used to overcome these problems. Purpose The purpose of this biomechanical study was to evaluate the effects of cantilever length and inclination of implant on the

Statement of problem Reasons for failures of bilayer yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) restorations include the core-veneer interface bond strength. The influence of the veneering method on the bond strength of veneered Y-TZP is unclear. Purpose The purpose of this systematic review and meta-analysis was to evaluate the effect of the veneering method on the bond strength of

Statement of problem Direct-metal laser-sintering (DMLS) technologies are being used to manufacture removable partial denture frameworks; however, the build parameters are not well documented. Purpose The purpose of this in vitro study was to investigate the impact of 3 different build angulations on a dental cobalt-chromium (Sint-Tech ST2724G) alloy by comparing the tensile properties and nanoindentation

Statement of problem A high metal-ceramic bond strength is important for successful dental restorations. However, studies on the evaluation of the bond strength of porous metal–ceramic restorations compared with conventional ones are scarce. Purpose The purpose of this in vitro study was to compare the bond strength of a porous metal–ceramic structure with conventional metal-ceramic restorations. Material

Statement of problem Studies on the impact of incorporating attachments in removable prostheses on patient-based outcomes are scarce. Purpose The purpose of this clinical study was to investigate oral health–related quality of life (OHRQoL) and patient satisfaction in partially edentulous participants before and after rehabilitation with mandibular attachment-retained removable prostheses as compared

Statement of problem Conventional techniques (CTs) for complete denture fabrication involve a series of clinical and laboratory steps. A simplification of this process has been advocated, but whether simplified techniques result in acceptable treatment outcomes is unclear. Purpose The purpose of this systematic review and meta-analysis was to evaluate the efficiency of simplified denture fabrication

Statement of problem Malpositioning of implants is one of the main factors leading to hard- and soft-tissue deficiencies. Whether static computer-guided implant placement increases accuracy and prevents malpositioning is unclear. Purpose The purpose of this in vitro study was to determine accuracy defined by trueness and precision (according to International Organization for Standardization 5725) of