本文選題：聚乳酸 + 可吸收根管樁膜　； 參考：《廣西醫(yī)科大學》2014年碩士論文

【摘要】：第一部分聚乳酸可吸收根管樁膜修復殘根的抗折力研究 目的：探討聚乳酸可吸收根管樁膜修復殘根后的抗折力。 方法：將24顆離體下頜前磨牙隨機分成3組，，每組8顆，分別采用聚乳酸可吸收根管樁、玻璃纖維樁及復合樹脂短樁進行樹脂冠修復，采用電子萬能材料測驗機對試件進行抗折力測試，記錄試件抗折力值，觀察折裂模式。3組間抗折力比較采用單因素方差分析，兩兩比較采用LSD檢驗，采用雙側(cè)檢驗，檢驗水準α=0.05。 結(jié)果：LSD檢驗結(jié)果顯示，聚乳酸可吸收根管樁組與玻璃纖維樁組的抗折力無統(tǒng)計學差異（P=0.530），均低于復合樹脂短樁組（P=0.004，0.016）。3組試件的折裂模式均為有利性牙折模式。 結(jié)論：聚乳酸可吸收根管樁膜修復殘根后的抗折力能滿足臨床需要。 第二部分聚乳酸可吸收根管樁膜修復嬰幼兒乳牙殘根的病例分析 目的：評價聚乳酸可吸收根管樁膜修復嬰幼兒乳牙殘根的效果。 方法：選擇7例嬰幼兒19顆乳上前牙殘根，在全身麻醉下對其進行常規(guī)根管治療，采用聚乳酸可吸收根管樁膜輔助固位，光固化復合樹脂功能性修復乳上前牙形態(tài)。患兒每3個月復查，設(shè)計觀察至乳牙自然脫落。復查時檢查患兒口腔衛(wèi)生狀況、牙齦健康狀況及患牙修復體情況，評價聚乳酸可吸收樁膜結(jié)合復合樹脂修復乳牙殘根的效果；通過X線檢查，觀察聚乳酸樁膜與乳牙根吸收情況，以及繼承恒牙發(fā)育情況。 結(jié)果：聚乳酸可吸收根管樁膜修復嬰幼兒乳牙殘根12個月后，13顆修復體保存，保存率為68.42%；同期X線片復查顯示聚乳酸可吸收根管樁膜與牙根同步吸收，恒牙胚發(fā)育未見異常。 結(jié)論：聚乳酸可吸收根管樁膜修復嬰幼兒乳牙殘根的近期效果良好，遠期效果需進一步研究。
[Abstract]:Part I study on the flexural strength of Polylactic Acid Absorbable Root pile membrane for repairing residual Root objective: to study the flexural strength of Polylactic acid absorbable root canal post membrane for repairing residual root. Methods: 24 mandibular premolars in vitro were randomly divided into 3 groups, 8 in each group, and were repaired with resin crown with polylactic acid absorbable root canal post, glass fiber post and composite resin short post respectively. An electronic universal material tester was used to test the flexural strength of the specimens. The values of the flexural strength of the specimens were recorded. The analysis of variance (ANOVA) was used to observe the fracture mode of group .3, the LSD test was used for the two groups, and the double side test was used to test the leveling 偽 0.05. Results the results of WLSD test showed that there was no significant difference in the flexural strength between the Polylactic acid absorbable root canal pile group and the glass fiber pile group (P0. 530), which was lower than that in the composite resin short pile group (P0. 004 + 0. 016). Conclusion: Polylactic acid absorbable root canal post membrane can meet the clinical requirement after repairing residual root. The second part: the case analysis of residual root restoration of infant deciduous teeth with polylactic acid absorbable root canal post membrane objective: to evaluate the effect of polylactic acid absorbable root canal post membrane on the restoration of residual root of infant deciduous teeth. Methods: the residual root of 19 primary anterior teeth of 7 infants were treated with conventional root canal under general anesthesia. Polylactic acid absorbable root canal post membrane was used to assist retention and light curing composite resin was used to repair the morphology of primary anterior teeth. The children were reexamined every 3 months and the deciduous teeth were observed naturally. To evaluate the effect of polylactic acid absorbable pile membrane combined with composite resin in repairing residual root of deciduous teeth, the oral health status, gingival health status and restoration of affected teeth were examined during reexamination. To observe the absorption of polylactic acid post membrane and root of deciduous teeth and the development of inherited permanent teeth. Results: after 12 months of restoration of residual root of infant deciduous teeth with polylactic acid absorbable root canal post membrane, the preservation rate was 68.42, and X-ray examination showed that polylactic acid absorbable root canal post membrane was absorbed simultaneously with root, and the development of permanent tooth germ was not abnormal. Conclusion: Polylactic acid (PLA) can be used to repair residual root of deciduous teeth in infants.
【學位授予單位】：廣西醫(yī)科大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：R781.05

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