CAJ | 학술논문

背景:树脂类粘结剂包括全酸蚀、自酸蚀和一步法粘结剂,学者们对其粘接性能进行了大量的研究,观点却有所不同.目的:比较两种树脂粘结系统对纤维桩的剪切粘接强度,并用激光扫描共聚焦显微镜观察粘接界面的物理构象,了解宏观的固位力与微观的形态结构之间的关系.设计、时间及地点:体外对比观察实验,于2008-03/2009-03在上海交通大学附属第九人民医院口腔修复实验室及口腔外科实验室完成.材料:实验采用的纤维桩为美国BISCO公司MATCHPOST石英纤维桩,两种树脂粘结系统为美国BiSCO公司One-step粘结系统(全酸蚀粘结系统)和日本可乐丽株式会社的Panayia F粘结系统(自酸蚀粘结系统),荧光素为美国Sigma公司罗丹明B异硫氢酸.方法:选用10颗无龋坏的人上颌中切牙,于釉牙骨质界冠方1 mm处截除牙冠,随机分成2组,每组5颗.分别用One-step和Panavia F两种树脂粘结系统在进行罗丹明标记后将石英纤维桩粘固于根管内.主要观察指标:牙根包埋后切片制备成2 mm厚的标本,将标本置于EZ20微拉伸机上用微推出法进行剪切粘接强度测试并记录数值,同时用激光扫描共聚焦显微镜观察牙本质-粘结剂-桩之间界面,并用随机软件测量粘接层的厚度.结果:One-Step粘结系统的粘接强度明显大于Panavia F粘结系统的粘接强度(P<0.05),另外根颈部的粘接强度明显大于根尖部的粘接强度(P<0.05).激光扫描共聚焦显微镜观察显示One-step粘结系统的混合层厚度大于Panavia F粘结系统的混合层厚度(P<0.05).结论:全酸蚀粘结系统对纤维桩的粘接强度大于自酸蚀粘结系统,树脂粘结剂对纤维桩的粘接强度在根颈部大于根尖部.
배경:수지류점결제포괄전산식、자산식화일보법점결제,학자문대기점접성능진행료대량적연구,관점각유소불동.목적:비교량충수지점결계통대섬유장적전절점접강도,병용격광소묘공취초현미경관찰점접계면적물리구상,료해굉관적고위력여미관적형태결구지간적관계.설계、시간급지점:체외대비관찰실험,우2008-03/2009-03재상해교통대학부속제구인민의원구강수복실험실급구강외과실험실완성.재료:실험채용적섬유장위미국BISCO공사MATCHPOST석영섬유장,량충수지점결계통위미국BiSCO공사One-step점결계통(전산식점결계통)화일본가악려주식회사적Panayia F점결계통(자산식점결계통),형광소위미국Sigma공사라단명B이류경산.방법:선용10과무우배적인상합중절아,우유아골질계관방1 mm처절제아관,수궤분성2조,매조5과.분별용One-step화Panavia F량충수지점결계통재진행라단명표기후장석영섬유장점고우근관내.주요관찰지표:아근포매후절편제비성2 mm후적표본,장표본치우EZ20미랍신궤상용미추출법진행전절점접강도측시병기록수치,동시용격광소묘공취초현미경관찰아본질-점결제-장지간계면,병용수궤연건측량점접층적후도.결과:One-Step점결계통적점접강도명현대우Panavia F점결계통적점접강도(P<0.05),령외근경부적점접강도명현대우근첨부적점접강도(P<0.05).격광소묘공취초현미경관찰현시One-step점결계통적혼합층후도대우Panavia F점결계통적혼합층후도(P<0.05).결론:전산식점결계통대섬유장적점접강도대우자산식점결계통,수지점결제대섬유장적점접강도재근경부대우근첨부.
BACKGROUND: Resin adhesives include total-etching, self-etching and one-step adhesive. The studies concerning their adhesive properties remain different.OBJECTIVE: To compare the bonding strengths of fiber posts cemented to root canals with etch-and-rinse adhesives and self-etch adhesives, and to observe the physical interface bonding conformation using laser scanning confocal microscope so as to understand the retention of macro-and micro-morphology relationship.DESIGN, TIME AND SETTING: In vitro comparative observation was performed at the laboratories of Prosthodontics and Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University from March 2008 to March 2009.MATERIALS: MATCHPOST fiber posts (Bisco, USA); etch-and-rinse adhesives (One-step, Bisco, USA) and self-etch adhesives (Panavia F adhesive system, Japan), fluorescein (Sigma, USA).METHODS: A total of 10 upper central incisor teeth, which had been freshly extracted for periodontal reasons, were selected,and the crown, 1 mm from the enamel-cementum junction, was cut. They were randomly divided into 2 groups with 5 specimens in each group. The fiber posts were bonded to root canals with One-Step or Panavia F which was tagged with rhodamine B.MAIN OUTCOME MEASURES: Each specimen was sectioned into two 2 mm-thick slices. A push-out test was made in a universal testing machine (EZ20), and confocal laser scanning microscopic (CLSM) analysis was performed to evaluate the primer penetration into dentin. The thickness of adhesive layer was measured by random software.RESULTS: The bonding strength of the group cemented with One-step was significantly greater than Panavia F (P < 0.05). The bonding strength of root crown was significantly greater than root apex (P < 0.05). One-step represented in CLSM image showed numerous and longer resin tags than Panavia F (P < 0.05).CONCLUSION: Etch-and-rinse adhesives (One-step) gained higher bonding strengths than self-etch adhesives (Panavia F).Resin binder to bond strength of fiber post and neck was greater than in the root apex.