Objective: The aim of study was to evaluate the nature of mesiodistal angulation of the posterior teeth in patients with maxillary high canine, and to identify possible associations of crowding with mesial axial angul...Objective: The aim of study was to evaluate the nature of mesiodistal angulation of the posterior teeth in patients with maxillary high canine, and to identify possible associations of crowding with mesial axial angulation of the maxillary posterior teeth. Methods: The present study included seven Japanese male and 23 Japanese female patients. Study models were analyzed to evaluate the effectiveness of orthodontic treatment. A protractor was used to measure crown angulations, which were measured with reference to the posterior angle between the functional occlusal plane (FOP) and the long axis of the clinical crown of the lateral teeth and first molars. A sliding digital caliper was used to measure dental arch widths. Changes in the rotation of the maxillary molars were analyzed using “occlu-sograms”, which were printed from photographs of the occlusal aspect of the study model. Results: The maxillary teeth interacted with one another in the alveolar bone, resulting in progressive mesial tipping of the posterior teeth before orthodontic treatment. After orthodontic treatment, the angle relative to the FOP exhibited a significant increase, indicating that the maxillary teeth underwent distally directed uprighting (P P Conclusions: Based on the results, both uprighting of mesially tipped lateral teeth and expansion of narrow dental arches could prove to be keys to success in space regaining or correction of high canines and mild crowding.展开更多
目的探讨CEREC计算机辅助设计与制作(computer aided design and computer aided manufacturing,CAD/CAM)全瓷高嵌体微创修复根管治疗后的后牙牙体缺损的临床疗效。方法选择126例大面积缺损的后牙,经过完善的根管治疗后,采用CEREC CAD/...目的探讨CEREC计算机辅助设计与制作(computer aided design and computer aided manufacturing,CAD/CAM)全瓷高嵌体微创修复根管治疗后的后牙牙体缺损的临床疗效。方法选择126例大面积缺损的后牙,经过完善的根管治疗后,采用CEREC CAD/CAM全瓷高嵌体修复缺损牙冠,修复后即刻对患者进行满意度调查,术后即刻及1年后随访,均按照改良的美国公共卫生部(United States Public Health Service,USPHS)标准对修复体进行临床评价。结果患者满意度在91%以上。根据改良USPHS标准,术后即刻及1年后复查时修复体边缘适合性达到A级分别为92.1%和91.3%(c2=0.052,P=0.820),外形达A级前后两次均为97.6%,表面质地达到A级分别为95.2%和93.7%(c2=0.303,P=0.582),颜色匹配达到A级分别为80.2%和81.7%(c2=0.103,P=0.748)。仅出现1例瓷破裂。结论 CEREC CAD/CAM全瓷高嵌体修复后牙牙体缺损效果良好,远期效果有待观察。展开更多
文摘Objective: The aim of study was to evaluate the nature of mesiodistal angulation of the posterior teeth in patients with maxillary high canine, and to identify possible associations of crowding with mesial axial angulation of the maxillary posterior teeth. Methods: The present study included seven Japanese male and 23 Japanese female patients. Study models were analyzed to evaluate the effectiveness of orthodontic treatment. A protractor was used to measure crown angulations, which were measured with reference to the posterior angle between the functional occlusal plane (FOP) and the long axis of the clinical crown of the lateral teeth and first molars. A sliding digital caliper was used to measure dental arch widths. Changes in the rotation of the maxillary molars were analyzed using “occlu-sograms”, which were printed from photographs of the occlusal aspect of the study model. Results: The maxillary teeth interacted with one another in the alveolar bone, resulting in progressive mesial tipping of the posterior teeth before orthodontic treatment. After orthodontic treatment, the angle relative to the FOP exhibited a significant increase, indicating that the maxillary teeth underwent distally directed uprighting (P P Conclusions: Based on the results, both uprighting of mesially tipped lateral teeth and expansion of narrow dental arches could prove to be keys to success in space regaining or correction of high canines and mild crowding.
文摘目的探讨CEREC计算机辅助设计与制作(computer aided design and computer aided manufacturing,CAD/CAM)全瓷高嵌体微创修复根管治疗后的后牙牙体缺损的临床疗效。方法选择126例大面积缺损的后牙,经过完善的根管治疗后,采用CEREC CAD/CAM全瓷高嵌体修复缺损牙冠,修复后即刻对患者进行满意度调查,术后即刻及1年后随访,均按照改良的美国公共卫生部(United States Public Health Service,USPHS)标准对修复体进行临床评价。结果患者满意度在91%以上。根据改良USPHS标准,术后即刻及1年后复查时修复体边缘适合性达到A级分别为92.1%和91.3%(c2=0.052,P=0.820),外形达A级前后两次均为97.6%,表面质地达到A级分别为95.2%和93.7%(c2=0.303,P=0.582),颜色匹配达到A级分别为80.2%和81.7%(c2=0.103,P=0.748)。仅出现1例瓷破裂。结论 CEREC CAD/CAM全瓷高嵌体修复后牙牙体缺损效果良好,远期效果有待观察。
