Aim: To confirm the effect of root canal treatment on radix entomolaris. Case: Radix entomolaris was an additional root that located on the distolingual of mandibular first molars. In this case, the radix entomolaris ...Aim: To confirm the effect of root canal treatment on radix entomolaris. Case: Radix entomolaris was an additional root that located on the distolingual of mandibular first molars. In this case, the radix entomolaris was detected clinically and radiographically with root canal configuration such as curves. An awareness and understanding of this unusual root and root canal morphology could contribute to the successful outcome of endodontic treatment. Conclusion: Root canal treatment on this case shows the lack of symptoms and normal radiographic presentation for two months follow-up.展开更多
目的:评估牙根先脱位法拔除下颌骨埋伏第三磨牙(impacted lower third molar,ILTM)对邻近第二磨牙(mandibular second molar,M2M)远中成骨效果、牙髓状态和牙根外吸收(external root resorption,ERR)进展的影响。方法:选择2023年1月—2...目的:评估牙根先脱位法拔除下颌骨埋伏第三磨牙(impacted lower third molar,ILTM)对邻近第二磨牙(mandibular second molar,M2M)远中成骨效果、牙髓状态和牙根外吸收(external root resorption,ERR)进展的影响。方法:选择2023年1月—2023年10月于新疆医科大学第一附属医院进行ILTM拔除的患者64例,其中,32例采用牙根先脱位法拔除ILTM(实验组),32例采用牙冠先脱位法拔除ILTM(对照组)。术前、术后记录M2M松动度、牙髓状态、ERR情况、术后疼痛视觉模拟评分(VAS),术后3、6个月拍摄CBCT,测量M2M骨缺损深度、M2M骨高度、骨高度百分比和骨灰度等指标。采用SPSS 26.0软件包对数据进行统计学分析。结果:实验组术后第3天疼痛VAS评分显著低于对照组(P<0.05),手术时间、M2M牙髓活力和松动度两组均无显著差异(P>0.05);实验组去骨量显著少于对照组(P<0.05)。实验组术后即刻近中颊侧、远中舌侧PD显著低于对照组(P<0.05)。不同程度的ERR中,实验组术后3个月和6个月骨缺损深度、骨高度、骨高度百分比和骨灰度显著低于对照组(P<0.05)。不同阻生类型的2组术后骨缺损深度、骨高度、骨高度百分比和骨灰度比较,差异有统计学意义(P<0.05)。阻生深度与ERR严重程度比较,差异无统计学意义(P>0.05)。所有患者术后均未出现感染和神经损伤等并发症。结论:牙根先脱位法拔除ILTM对M2M远中成骨效果具有一定引导作用,对M2M远中牙周健康改善和术后反应均有效果。展开更多
文摘Aim: To confirm the effect of root canal treatment on radix entomolaris. Case: Radix entomolaris was an additional root that located on the distolingual of mandibular first molars. In this case, the radix entomolaris was detected clinically and radiographically with root canal configuration such as curves. An awareness and understanding of this unusual root and root canal morphology could contribute to the successful outcome of endodontic treatment. Conclusion: Root canal treatment on this case shows the lack of symptoms and normal radiographic presentation for two months follow-up.
文摘目的:对下颌第一磨牙拔除后行种植修复的病例进行回顾性研究,探索重度牙周破坏(advanced periodontal defect,APD)对拔牙后种植手术方式的影响。方法:纳入下颌第一磨牙拔除后自然愈合3~12个月行种植手术的患者176例,共179个种植位点,进行回顾性分析,记录患者年龄、性别、缺牙时间以及拔牙时是否有APD。采用多因素Logistic回归,分析拔牙前APD是否是种植时行引导性骨再生(guided bone regeneration,GBR)的风险因素。结果:对年龄、性别、缺牙时间等因素校正后,结果显示,有APD的下颌第一磨牙,种植时行GBR的风险是无APD位点的4.738倍(95%可信区间:1.650~13.609,P<0.05)。结论:APD的下颌第一磨牙拔除后,种植手术时行GBR的可能性更大。
文摘目的:评估牙根先脱位法拔除下颌骨埋伏第三磨牙(impacted lower third molar,ILTM)对邻近第二磨牙(mandibular second molar,M2M)远中成骨效果、牙髓状态和牙根外吸收(external root resorption,ERR)进展的影响。方法:选择2023年1月—2023年10月于新疆医科大学第一附属医院进行ILTM拔除的患者64例,其中,32例采用牙根先脱位法拔除ILTM(实验组),32例采用牙冠先脱位法拔除ILTM(对照组)。术前、术后记录M2M松动度、牙髓状态、ERR情况、术后疼痛视觉模拟评分(VAS),术后3、6个月拍摄CBCT,测量M2M骨缺损深度、M2M骨高度、骨高度百分比和骨灰度等指标。采用SPSS 26.0软件包对数据进行统计学分析。结果:实验组术后第3天疼痛VAS评分显著低于对照组(P<0.05),手术时间、M2M牙髓活力和松动度两组均无显著差异(P>0.05);实验组去骨量显著少于对照组(P<0.05)。实验组术后即刻近中颊侧、远中舌侧PD显著低于对照组(P<0.05)。不同程度的ERR中,实验组术后3个月和6个月骨缺损深度、骨高度、骨高度百分比和骨灰度显著低于对照组(P<0.05)。不同阻生类型的2组术后骨缺损深度、骨高度、骨高度百分比和骨灰度比较,差异有统计学意义(P<0.05)。阻生深度与ERR严重程度比较,差异无统计学意义(P>0.05)。所有患者术后均未出现感染和神经损伤等并发症。结论:牙根先脱位法拔除ILTM对M2M远中成骨效果具有一定引导作用,对M2M远中牙周健康改善和术后反应均有效果。
