不同表面形貌的纯钛种植体对牙龈软组织界面影响的扫描电镜观察

发布时间：2018-10-11 10:57

【摘要】：目的:比较不同的纯钛种植体表面形貌对牙龈软组织界面的影响,寻找一种有利于牙龈软组织附着的种植体颈部表面形貌。方法:采用电化学方法使纯钛金属种植体形成4种表面,即酸蚀组(AE组)纳米表面、电化学腐蚀1和2组(ECE1和ECE2组)的微米表面、电化学腐蚀加酸蚀组(ECA组)的微米-纳米表面,并以光滑组(S组)光滑表面作为对照,将5种试件即刻植于犬下颌骨中,术后20d及3个月分别处死各组犬,制作标本后采用扫描电镜观察牙龈软组织与种植体表面结合界面的情况。结果:各组犬牙龈上皮与种植体表面连接紧密,组间比较未见明显差异;去除软组织后种植体表面未见上皮组织残留。S组胶原纤维平行黏附于种植体表面,与种植体表面大部分开裂分离,去除软组织后种植体表面残留胶原纤维较少;其他各组胶原纤维均垂直扎向种植体表面,牙龈组织面与种植体表面形成复杂的微米-纳米镶嵌结构,与种植体表面开裂较少;ECE2组和ECA组去除软组织后种植体表面残留的胶原纤维多于AE组和ECE1组。结论:通过电化学方法处理得到的微米和微米-纳米表面的种植体可明显改善牙龈软组织与种植体表面的黏附。
[Abstract]:Objective: to compare the effects of different pure titanium implants on the interface of gingival soft tissue, and to find a kind of cervical surface morphology which is favorable to the adhesion of soft tissue to the gingival tissue. Methods: the pure titanium implants were made into four kinds of surfaces by electrochemical method, that is, the nano-surface of acid etching group (AE group), the micron surface of group 1 and 2 (ECE1 and ECE2 group), and the micrometer surface of group 1 and 2 (ECE1 and ECE2 group). The micron-nanometer surface of the ECA group was added by electrochemical etching, and the smooth surface of the smooth group (S group) was used as the control. The five specimens were immediately implanted in the mandible of the dog. The dogs were killed 20 days and 3 months after operation. The interface between gingival soft tissue and implant surface was observed by scanning electron microscope. Results: the gingival epithelium and implant surface in each group were closely connected, but there was no significant difference between the two groups, and there was no residual epithelium on the implant surface after soft tissue removal, while collagen fibers in group S were attached to the implant surface in parallel. After removing soft tissue, there were fewer collagen fibers remaining on the implant surface, and the other groups of collagen fibers were perpendicular to the implant surface. The gingival tissue surface and implant surface formed complex micron-nano mosaic structure, and less cracking with implant surface, ECE2 group and ECA group after removing soft tissue implant surface residual collagen fiber more than AE group and ECE1 group. Conclusion: the adhesion of gingival soft tissue to implant surface can be significantly improved by electrochemical treatment of micrometer and micron-nano surface implants.
【作者单位】：吉林大学口腔医院种植中心;山东省德州市人民医院口腔科;
【基金】：吉林省发展与改革委员会科研基金资助课题(2013C022-6)
【分类号】：R783

【共引文献】