摘要
目的:定量研究嵌体和全冠修复根管治疗后磨牙与前磨牙牙齿外形改变量,以及对牙周组织的影响。方法:选取需要根管治疗的牙周组织健康和慢性牙周炎的患牙各30例,完善根管治疗后,随机各取15例进行嵌体或全冠修复。口外扫描仪扫描同一患牙修复前后石膏模型,Geomagic Qualify 12.0将三维模型数据两两进行最佳拟合对齐和3D比较,计算配对数据间的平均偏差(averaged errors,AE)。ELASA法定量检测治疗前后龈沟中液弹性蛋白酶(elastase,EA)及前列腺素E2(prostaglandin E2,PGE2)变化。结果:1.用全冠修复的患牙外形形态于颊侧近合面1/2,近龈端1/2及舌侧近龈端1/2改变量大于嵌体修复患牙的改变量,并具有统计学差异(P<0.05)。2.慢性牙周炎患牙经牙周基础治疗一年后龈沟液中前列腺素E2和弹性蛋白酶浓度明显降低,并具有统计学意义(P<0.05);牙周健康患牙无明显改变。结论:全冠修复对牙齿原有外形在颊舌侧改变量大于嵌体修复,但并未对牙周组织产生明显影响。慢性牙周病患牙接受牙周基础治疗后,牙周状态明显改善。
Objective： To study the morphological changes of molar and premolar teeth with root canal treatment as well as its effect on periodontal tissues. Methods： Thirty cases with healthy periodontal tissues and thirty cases with chronic periodontitis were selected. After root canal treatment, 15 cases were randomly selected for inlay or crown restoration. Extra oral scanner was used to scan the plaster models and Geomagie Qualifyl2.0 was employed to perform the best fitting alignment and 3D comparison of the data before and after the restoration. Elastase and prostaglandin E2 in gingival crevicular fluid before and after treatment were analyzed by ELASA. Results.. The mor- phological changes of the teeth with crown restoration in the proximal--occlusal surface , the proximal--gingival end in the buccal sides as well as the proximal--gingival end 1/2 in the lingual side were greater than that of inlay restoration. For the teeth of chronic periodontitis which received initial periodontal treatment, the levels of prosta- glandin E2 and elastase in the gingival crevicular fluids were all significantly reduced and they were statistically sig nificant after one year＇s restoration. Conclusion： The quantities in morphological changes for the original shape of the teeth in the buccal--lingual side due to crown restoration are greater than that of inlay restoration, hut there is no significant effect on the periodontal tissues.
出处
《口腔医学研究》
CAS
北大核心
2017年第10期1086-1090,共5页
Journal of Oral Science Research
基金
辽宁省自然科学基金项目资助(编号:2014023035)
关键词
牙齿外形
嵌体修复
牙体缺损
牙周基础治疗
成像
三维
of tooth Inlay restoration Tooth defect Initial periodontal treatment ImagingThree-- dimensional
