实用医院临床杂志
實用醫院臨床雜誌
실용의원림상잡지
PRACTICAL JOURNAL OF CLINICAL MEDICINE
2015年
4期
45-46,47
,共3页
双根管前磨牙%石英纤维桩%玻璃纤维桩%抗折性强度
雙根管前磨牙%石英纖維樁%玻璃纖維樁%抗摺性彊度
쌍근관전마아%석영섬유장%파리섬유장%항절성강도
Double root canal anterior molar%Quartz fiber post%Fiberglass pile%Flexural strength
目的：探讨石英纤维桩修复的双根管前磨牙的体外抗折性能。方法选择正畸治疗中拔除的双根管前磨牙76颗，采用随机数字法分为 A、B 两组各38颗。两组均自唇侧牙体长轴垂直沿釉牙骨质界上2．0 mm 水平截冠，并进行常规牙根管治疗。 A 组采用石英纤维桩修复，B 组采用玻璃纤维桩修复，两组样本包埋后以压力测试仪测量样本发生瞬间折裂时的作用力数值，比较两组抗折裂强度和折裂方式。结果 A、B 两组抗折裂强度分别为（398．63±13．94）N 和（229．88±14．39）N，差异有统计学意义（t ＝28．965，P ＝0．004）；折裂后可再次修复率分别为86．84％、78．95％，差异无统计学意义（P ＞0．05）。结论石英纤维桩修复的双根管前磨牙体外抗折性能优于玻璃纤维桩，承受力较好，值得进一步推广使用。
目的：探討石英纖維樁脩複的雙根管前磨牙的體外抗摺性能。方法選擇正畸治療中拔除的雙根管前磨牙76顆，採用隨機數字法分為 A、B 兩組各38顆。兩組均自脣側牙體長軸垂直沿釉牙骨質界上2．0 mm 水平截冠，併進行常規牙根管治療。 A 組採用石英纖維樁脩複，B 組採用玻璃纖維樁脩複，兩組樣本包埋後以壓力測試儀測量樣本髮生瞬間摺裂時的作用力數值，比較兩組抗摺裂彊度和摺裂方式。結果 A、B 兩組抗摺裂彊度分彆為（398．63±13．94）N 和（229．88±14．39）N，差異有統計學意義（t ＝28．965，P ＝0．004）；摺裂後可再次脩複率分彆為86．84％、78．95％，差異無統計學意義（P ＞0．05）。結論石英纖維樁脩複的雙根管前磨牙體外抗摺性能優于玻璃纖維樁，承受力較好，值得進一步推廣使用。
목적：탐토석영섬유장수복적쌍근관전마아적체외항절성능。방법선택정기치료중발제적쌍근관전마아76과，채용수궤수자법분위 A、B 량조각38과。량조균자진측아체장축수직연유아골질계상2．0 mm 수평절관，병진행상규아근관치료。 A 조채용석영섬유장수복，B 조채용파리섬유장수복，량조양본포매후이압력측시의측량양본발생순간절렬시적작용력수치，비교량조항절렬강도화절렬방식。결과 A、B 량조항절렬강도분별위（398．63±13．94）N 화（229．88±14．39）N，차이유통계학의의（t ＝28．965，P ＝0．004）；절렬후가재차수복솔분별위86．84％、78．95％，차이무통계학의의（P ＞0．05）。결론석영섬유장수복적쌍근관전마아체외항절성능우우파리섬유장，승수력교호，치득진일보추엄사용。
Objective To investigate the in vitro anti-fracture property of quartz fiber post in restoration of double root canal anterior molars.Methods Seventy-six double root canal anterior molars were extracted in orthodontic treatment .The teeth were ran-domly divided into group A and B (38 teeth in each group) according to the digital random method .The tooth crown was cut from the labial tooth axis along the vertical CEJ 2 mm level and given the conventional root canal treatment in the both groups .The group A was treated with quartz fiber post restoration while the group B was treated with glass fiber post restoration .The force values were measured by using a pressure tester when buried teeth samples had instant fracture .The anti-fracture strength and fracture mode were compared between the two groups.Results The flexural tensile strengths in the two groups were 398.63±1.394 N and 229.88±14.39 N,respec-tively.The difference was statistically significant (t =28.965,P =0.004).The Re-repair rates after fracture in the two groups were 86.84% and 78.95%,respectively.The difference was no statistically significant (P >0.05).Conclusion The in vitro anti-fracture property of quartz fiber post in the restoration of double root canals is better than that of glass fiber reinforced piles ,and the material has better bearing strength.Therefore,it is worth to be further popularized.
