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Combined effects of calcium hydroxide and photobiomodulation therapy on apexogenesis of immature permanent teeth in dogs.
Journal of Photochemistry and Photobiology B: Biology ( IF 3.9 ) Pub Date : 2020-04-02 , DOI: 10.1016/j.jphotobiol.2020.111867 Seraj Bahman 1 , Ghadimi Sara 2 , Hosseini Somayeh 3 , Tamiz Parvin 4 , Katayoun A M Kalhori 5 , Sohrabi Mona 6 , Fekrazad Reza 7
Journal of Photochemistry and Photobiology B: Biology ( IF 3.9 ) Pub Date : 2020-04-02 , DOI: 10.1016/j.jphotobiol.2020.111867 Seraj Bahman 1 , Ghadimi Sara 2 , Hosseini Somayeh 3 , Tamiz Parvin 4 , Katayoun A M Kalhori 5 , Sohrabi Mona 6 , Fekrazad Reza 7
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Treatment of high-risk traumatic immature teeth due to incomplete root development is challenging. Apexogenesis is currently the ideal treatment option that allows normal root development. The purpose of this study was to evaluate the apexogenesis process of immature permanent teeth of dogs when co-administered with calcium hydroxide and photobiomodulation therapy (PBMT). A total of 36 immature permanent anterior and premolar teeth were selected from three 4-6-month-old dogs of Iranian mixed generation. The teeth were categorized into two groups, calcium hydroxide with laser irradiation (CHL) and calcium hydroxide without laser irradiation (CH). All the selected teeth received calcium hydroxide pulpotomy. After restoring teeth with amalgam, the CHL group received gallium‑aluminum-arsenide (GaAlAs) diode laser (810 nm, 4.2 J/cm2, 0.3 W, 9 s,CW) on apical one-third of both buccal and lingual roots. The irradiation was repeated every 48 h for fourteen days. Intravenous tetracycline was used to observe newly formed dentin in the first, third, seventh, and fourteenth days. The distance between tetracycline lines (DTL) was examined by Fluorescence microscopy. Generalized estimating equations (GEE) were used for data analysis. In all assessments, the mean DTL were greater in the CHL group. However, the two groups had no significant differences in the amount of deposited dentin between the first and third, third and seventh, and first and seventh lines. Meanwhile, there was a significant difference between the two groups in terms of the distances between lines 7 and 14, 1 and 14 and also 3 to 14 (P < .001). In other words, from the 7th day onwards, there was a significant difference between the two groups. Within the limitation of this study, the combination therapy of PBMT and pulpotomy with calcium hydroxide accelerated apexogenesis in immature permanent dogs' teeth.
中文翻译：
氢氧化钙和光生物调节疗法对不成熟恒牙在狗中的成胶作用的联合作用。
由于牙根发育不完全而导致的高风险创伤性未成熟牙齿的治疗具有挑战性。顶生是目前允许正常根发育的理想治疗选择。这项研究的目的是评估与氢氧化钙和光生物调节疗法（PBMT）共同使用时，狗的未成熟恒牙的成牙过程。从伊朗混合世代的三只4-6个月大的狗中，总共选择了36颗未成熟的永久前牙和前磨牙。牙齿分为两类，激光照射的氢氧化钙（CHL）和不使用激光照射的氢氧化钙（CH）。所有选定的牙齿均接受了氢氧化钙髓核切开术。用汞齐修复牙齿后，CHL组接受了砷化镓铝镓（GaAlAs）二极管激光器（810 nm，4.2 J / cm2，0.3 W，9 s，CW）在颊和舌根的三分之一上。每48小时重复照射14天。在第一天，第三天，第七天和第十四天，使用静脉四环素观察新形成的牙本质。通过荧光显微镜检查四环素系（DTL）之间的距离。广义估计方程（GEE）用于数据分析。在所有评估中，CHL组的平均DTL更高。但是，两组在第一和第三，第三和第七以及第一和第七行之间的牙本质沉积量上没有显着差异。同时，就线段7和14、1和14之间以及3至14之间的距离而言，两组之间存在显着差异（P <.001）。换句话说，从第7天开始，两组之间存在显着差异。在这项研究的限制内，PBMT和髓核切开术与氢氧化钙的联合治疗可加速未成熟永久犬牙齿的成胶作用。
更新日期：2020-04-02
中文翻译：
氢氧化钙和光生物调节疗法对不成熟恒牙在狗中的成胶作用的联合作用。
由于牙根发育不完全而导致的高风险创伤性未成熟牙齿的治疗具有挑战性。顶生是目前允许正常根发育的理想治疗选择。这项研究的目的是评估与氢氧化钙和光生物调节疗法（PBMT）共同使用时，狗的未成熟恒牙的成牙过程。从伊朗混合世代的三只4-6个月大的狗中，总共选择了36颗未成熟的永久前牙和前磨牙。牙齿分为两类，激光照射的氢氧化钙（CHL）和不使用激光照射的氢氧化钙（CH）。所有选定的牙齿均接受了氢氧化钙髓核切开术。用汞齐修复牙齿后，CHL组接受了砷化镓铝镓（GaAlAs）二极管激光器（810 nm，4.2 J / cm2，0.3 W，9 s，CW）在颊和舌根的三分之一上。每48小时重复照射14天。在第一天，第三天，第七天和第十四天，使用静脉四环素观察新形成的牙本质。通过荧光显微镜检查四环素系（DTL）之间的距离。广义估计方程（GEE）用于数据分析。在所有评估中，CHL组的平均DTL更高。但是，两组在第一和第三，第三和第七以及第一和第七行之间的牙本质沉积量上没有显着差异。同时，就线段7和14、1和14之间以及3至14之间的距离而言，两组之间存在显着差异（P <.001）。换句话说，从第7天开始，两组之间存在显着差异。在这项研究的限制内，PBMT和髓核切开术与氢氧化钙的联合治疗可加速未成熟永久犬牙齿的成胶作用。
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