Objective:To investigate the clinical effect of the guided bone regeneration(GBR)technique combined with temporary bridgework-guided gingival contouring in treating upper anterior tooth loss with labial bone defects.M...Objective:To investigate the clinical effect of the guided bone regeneration(GBR)technique combined with temporary bridgework-guided gingival contouring in treating upper anterior tooth loss with labial bone defects.Methods:From July 2023 to April 2024,80 patients with upper anterior tooth loss and labial bone defects were admitted to the hospital and selected as evaluation samples.They were divided into an observation group(n=40)and a control group(n=40)using a numerical table lottery scheme.The control group received treatment with the GBR technique,while the observation group received treatment with the GBR technique combined with temporary bridges to guide gingival contouring.The two groups were compared in terms of clinical red aesthetic scores(PES),labial alveolar bone density,labial bone wall thickness,gingival papillae,gingival margin levels,and patient satisfaction.Results:The PES scores of patients in the observation group were higher than those in the control group after surgery(P<0.05).The bone density of the labial alveolar bone and the thickness of the labial bone wall in the observation group were higher than those in the control group.The levels of gingival papillae and gingival margins were lower in the observation group after surgery(P<0.05).Additionally,patient satisfaction in the observation group was higher than in the control group(P<0.05).Conclusion:The GBR technique combined with temporary bridge-guided gingival contouring for treating upper anterior tooth loss with labial bone defects can improve the aesthetic effect of gingival soft tissue,increase alveolar bone density and the thickness of the labial bone wall,and enhance patient satisfaction.This approach is suitable for widespread application in healthcare institutions.展开更多
Large-area and high-quality two-dimensional crystals are the basis for the development of the next-generation electronic and optical devices.The synthesis of two-dimensional materials in wafer scales is the first crit...Large-area and high-quality two-dimensional crystals are the basis for the development of the next-generation electronic and optical devices.The synthesis of two-dimensional materials in wafer scales is the first critical step for future technology uptake by the industries;however,currently presented as a significant challenge.Substantial efforts have been devoted to producing atomically thin two-dimensional materials with large lateral dimensions,controllable and uniform thicknesses,large crystal domains and minimum defects.In this review,recent advances in synthetic routes to obtain high-quality two-dimensional crystals with lateral sizes exceeding a hundred micrometres are outlined.Applications of the achieved large-area two-dimensional crystals in electronics and optoelectronics are summarised,and advantages and disadvantages of each approach considering ease of the synthesis,defects,grain sizes and uniformity are discussed.展开更多
目的:观察下颌阻生第三磨牙(impacted mandibular third molars,IM3Ms)拔除术后的自然转归及对邻近下颌第二磨牙(mandibular second molars,M2Ms)的影响。方法:选择下颌第三磨牙骨埋伏阻生的患者34例(51颗IM3Ms),使用超声骨刀、气动涡...目的:观察下颌阻生第三磨牙(impacted mandibular third molars,IM3Ms)拔除术后的自然转归及对邻近下颌第二磨牙(mandibular second molars,M2Ms)的影响。方法:选择下颌第三磨牙骨埋伏阻生的患者34例(51颗IM3Ms),使用超声骨刀、气动涡轮手机拔除患牙,分别于术前、术后1周及术后6个月随访,观察术后反应及M2Ms远中骨缺损情况。比较手术前后M2Ms远中骨缺损深度,并分析其影响因素。采用SPSS 29.0软件包对数据进行统计学分析。结果:术前M2Ms远中骨高度未见明显缺损,但拔除IM3Ms时,由于去骨拔牙等操作产生骨缺损。术后6个月,骨高度虽有所恢复,骨缺损率减少,但未达到术前水平。IM3Ms埋伏阻生深度是恢复率的主要影响因素。探诊深度较术前显著增加。术后24 h内患者疼痛感较重,术后1周缓解,但仍存在轻度开口受限及面部肿胀。拔除IM3Ms对患者日常生活、情绪、工作、睡眠影响较小。结论:下颌第三磨牙拔除术后,邻近第二磨牙远中骨高度部分恢复,但未达到术前水平。拔牙手术中需采取更加精细的手术技巧,以减少对邻近牙和骨组织的影响。同时,拔除IM3Ms后应给予镇痛药物,加强卫生宣教,提高患者术后舒适度。展开更多
目的:探讨微创全瓷贴面配合数字化微笑设计(Digital smile design,DSD)技术修复前牙切缘切角缺损的美学效果。方法:选取2019年1月-2022年1月笔者医院接诊的78例前牙切缘切角缺损患者为研究对象,采用区组随机化法分为观察组(116颗患牙)...目的:探讨微创全瓷贴面配合数字化微笑设计(Digital smile design,DSD)技术修复前牙切缘切角缺损的美学效果。方法:选取2019年1月-2022年1月笔者医院接诊的78例前牙切缘切角缺损患者为研究对象,采用区组随机化法分为观察组(116颗患牙)和对照组(120颗患牙),每组39例。对照组采用微创全瓷贴面修复,观察组给予微创全瓷贴面联合DSD技术进行修复。比较两组患者治疗6个月后的满意度、美学效果[美国公共卫生署评估标准(United states public health service,USPHS)],对比治疗前后两组患者的红色美学指数、牙周健康指数[牙龈指数(Gingival index,GI)、牙菌斑指数(Plaque index,PLI)、龈沟出血指数(Sulcus bleeding index,SBI)]的变化。结果:治疗6个月后,两组美学效果各维度评级有显著差异,观察组治疗满意率、红色美学指数评分均显著高于对照组(P<0.05);治疗6个月后,两组GI、PLI、SBI均明显降低,且观察组显著低于对照组(P<0.05)。结论:微创全瓷贴面联合DSD技术修复前牙切缘切角缺损可有效改善牙齿美学效果,提高患者治疗满意度,适合临床推广。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:To investigate the clinical effect of the guided bone regeneration(GBR)technique combined with temporary bridgework-guided gingival contouring in treating upper anterior tooth loss with labial bone defects.Methods:From July 2023 to April 2024,80 patients with upper anterior tooth loss and labial bone defects were admitted to the hospital and selected as evaluation samples.They were divided into an observation group(n=40)and a control group(n=40)using a numerical table lottery scheme.The control group received treatment with the GBR technique,while the observation group received treatment with the GBR technique combined with temporary bridges to guide gingival contouring.The two groups were compared in terms of clinical red aesthetic scores(PES),labial alveolar bone density,labial bone wall thickness,gingival papillae,gingival margin levels,and patient satisfaction.Results:The PES scores of patients in the observation group were higher than those in the control group after surgery(P<0.05).The bone density of the labial alveolar bone and the thickness of the labial bone wall in the observation group were higher than those in the control group.The levels of gingival papillae and gingival margins were lower in the observation group after surgery(P<0.05).Additionally,patient satisfaction in the observation group was higher than in the control group(P<0.05).Conclusion:The GBR technique combined with temporary bridge-guided gingival contouring for treating upper anterior tooth loss with labial bone defects can improve the aesthetic effect of gingival soft tissue,increase alveolar bone density and the thickness of the labial bone wall,and enhance patient satisfaction.This approach is suitable for widespread application in healthcare institutions.
基金the financial support from“National Natural Science Foundation of China”(No.51850410506)。
文摘Large-area and high-quality two-dimensional crystals are the basis for the development of the next-generation electronic and optical devices.The synthesis of two-dimensional materials in wafer scales is the first critical step for future technology uptake by the industries;however,currently presented as a significant challenge.Substantial efforts have been devoted to producing atomically thin two-dimensional materials with large lateral dimensions,controllable and uniform thicknesses,large crystal domains and minimum defects.In this review,recent advances in synthetic routes to obtain high-quality two-dimensional crystals with lateral sizes exceeding a hundred micrometres are outlined.Applications of the achieved large-area two-dimensional crystals in electronics and optoelectronics are summarised,and advantages and disadvantages of each approach considering ease of the synthesis,defects,grain sizes and uniformity are discussed.
文摘目的:观察下颌阻生第三磨牙(impacted mandibular third molars,IM3Ms)拔除术后的自然转归及对邻近下颌第二磨牙(mandibular second molars,M2Ms)的影响。方法:选择下颌第三磨牙骨埋伏阻生的患者34例(51颗IM3Ms),使用超声骨刀、气动涡轮手机拔除患牙,分别于术前、术后1周及术后6个月随访,观察术后反应及M2Ms远中骨缺损情况。比较手术前后M2Ms远中骨缺损深度,并分析其影响因素。采用SPSS 29.0软件包对数据进行统计学分析。结果:术前M2Ms远中骨高度未见明显缺损,但拔除IM3Ms时,由于去骨拔牙等操作产生骨缺损。术后6个月,骨高度虽有所恢复,骨缺损率减少,但未达到术前水平。IM3Ms埋伏阻生深度是恢复率的主要影响因素。探诊深度较术前显著增加。术后24 h内患者疼痛感较重,术后1周缓解,但仍存在轻度开口受限及面部肿胀。拔除IM3Ms对患者日常生活、情绪、工作、睡眠影响较小。结论:下颌第三磨牙拔除术后,邻近第二磨牙远中骨高度部分恢复,但未达到术前水平。拔牙手术中需采取更加精细的手术技巧,以减少对邻近牙和骨组织的影响。同时,拔除IM3Ms后应给予镇痛药物,加强卫生宣教,提高患者术后舒适度。
文摘目的:探讨微创全瓷贴面配合数字化微笑设计(Digital smile design,DSD)技术修复前牙切缘切角缺损的美学效果。方法:选取2019年1月-2022年1月笔者医院接诊的78例前牙切缘切角缺损患者为研究对象,采用区组随机化法分为观察组(116颗患牙)和对照组(120颗患牙),每组39例。对照组采用微创全瓷贴面修复,观察组给予微创全瓷贴面联合DSD技术进行修复。比较两组患者治疗6个月后的满意度、美学效果[美国公共卫生署评估标准(United states public health service,USPHS)],对比治疗前后两组患者的红色美学指数、牙周健康指数[牙龈指数(Gingival index,GI)、牙菌斑指数(Plaque index,PLI)、龈沟出血指数(Sulcus bleeding index,SBI)]的变化。结果:治疗6个月后,两组美学效果各维度评级有显著差异,观察组治疗满意率、红色美学指数评分均显著高于对照组(P<0.05);治疗6个月后,两组GI、PLI、SBI均明显降低,且观察组显著低于对照组(P<0.05)。结论:微创全瓷贴面联合DSD技术修复前牙切缘切角缺损可有效改善牙齿美学效果,提高患者治疗满意度,适合临床推广。
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。
