Rieder C E, Parel S M
University of Southern California, School of Dentistry, Los Angeles.
Int J Periodontics Restorative Dent. 1993 Aug;13(4):334-47.
To elicit information about the phenomenon of intrusion of natural tooth abutments in implant-connected prostheses, a survey was distributed to clinicians with varied experience. Although practitioners with more experience in fabricating implant-supported dentures connected to natural teeth reported fewer instances of intrusion, it cannot be concluded that this observation is significant. The cause of intrusion is probably multifactorial, and respondents suggested several possible causative factors: disuse atrophy, debris impaction, impaired rebound memory, and mechanical binding. Because apical migration of abutment teeth affects occlusion and oral hygiene, the authors make several recommendations for treatment planning for patients who have natural dentition adjacent to proposed implant sites.
为获取有关天然牙基牙在种植体连接修复体中侵入现象的信息，向经验各异的临床医生发放了一份调查问卷。尽管在制作与天然牙相连的种植支持义齿方面经验更丰富的从业者报告的侵入情况较少，但不能就此得出这一观察结果具有显著性的结论。侵入的原因可能是多因素的，受访者提出了几种可能的致病因素：废用性萎缩、碎屑嵌塞、回弹记忆受损和机械性束缚。由于基牙的根尖向移位会影响咬合和口腔卫生，作者针对在拟种植部位附近有天然牙列的患者的治疗计划提出了几点建议。
