可摘局部义齿

弹性义齿与传统可摘局部义齿对牙周情况影响的比较,套筒冠-卡环联合同位在可摘义齿中的应用,第七届国际口腔磁性附着体专题研讨会纪要[编者按]     

可摘局部义齿修复效果的调查

目的：研究可摘局部义齿的治疗结果并探讨与患者满意度有关的因素。方法：通过患者满意度的调查和临床检查，对63例戴可摘局部义齿5年以上的患者的治疗效果进行评价。结果：70％以上的患者对可摘局部义齿满意，约1／5的义齿需要修理，约1／3的修复体与基牙的龋患有关。结论：绝大多数患者戴可摘局部义齿5年后仍可使用修复体。     

无基托可摘局部义齿的临床应用

作者选择了４１例牙列缺损患者，为其设计并制作成无基托的可摘局部义齿，对其中的２９例作了追踪观察，效果良好。本文就无基托的ＲＰＤＳ的适应证，设计原则及患者的修复效果等方面进行了讨论。     

可摘局部义齿

20052037 隐形义齿在多个牙缺失病例中的应用；20052038 义齿大基板对口腔黏膜微循环的影响；20052039 集成于可摘局部义齿专家系统的二维有限元分析方法；20052040 研磨固位卡与附着体在可摘局部义齿中的联合应用；20052041 MKl附着体在肯氏Ⅱ类缺损中的应用体会；20052042 套筒冠可摘义齿修复多数牙缺失体会……     

可摘局部义齿

观测器在可摘局部义齿修复中的临床应用调查；He支托的设计对隐形义齿咬合力的影响；铸造支架与隐形义齿联合修复的临床应用；     

可摘局部义齿修复与龋齿发生的临床初步观察

可摘局部义齿修复与龋齿发生的临床初步观察巩传学作者观察１９８５年２月至１９９５年３月在山东省费县人民医院上冶分院口腔科采用可摘局部义齿修复的７０例患者，年龄为１５～７０岁，其中男性４３例，女性２７例，。戴义齿时间最短为６个月，最长达１０年。修复前对患...     

可摘局部义齿与菌斑

可摘局部义齿是一种被临床广泛应用的牙列缺损修复治疗方法。它能有效恢复咀嚼功能，满足配戴者的美观需求。但它同时导致口腔局部微环境发生变化，有利于菌斑堆积、优势菌丛改变，成为口腔常见感染性疾病，如龋病、牙主义齿性口炎的始动因子。本文就可摘局部义齿引起的口腔菌斑及优势菌丛的变化、预防和控制作一综述。     

可摘局部义齿修复1126例临床分析

目的：对1126例可摘局部义齿进行分析，为临床关于可摘局部义齿修复牙列缺损积累经验。方法：随机选取1126件义齿修复病例，分析牙齿缺损位置、数量与性别和年龄的关系及修复体的类型，并对采用新技术进行的特殊设计进行分析。结果：上颌牙缺失多于下颌，不同年龄组缺牙好发部位不同，青年组以前牙缺失为多，其他年龄组以后牙缺失为多。男女两组中平均失牙数随年龄增加而增加，但与性别无关，在各类可摘局部义齿设计中，第5类最多。结论：可摘局部义齿制作简便，适应症广，目前仍然在修复治疗中发挥着重要的作用。     

Photoelastic Study of the Support Structures of Distal-Extension Removable Partial Dentures

Purpose: The double system of support, in which the distal-extension removable partial denture adapts, causes inadequate stress around abutment teeth, increasing the possibility of unequal bone resorption. Several ways to reduce or more adequately distribute the stress between abutment teeth and residual ridges have been reported; however, there are no definitive answers to the problem. The purpose of this study was to analyze, by means of photoelasticity, the most favorable stress distribution using three retainers: T bar, rest, proximal plate, I bar (RPI), and circumferential with mesialized rest.
Materials and Methods: Three photoelastic models were made simulating a Kennedy Class II inferior arch. Fifteen dentures with long saddles, five of each design, were adjusted to the photoelastic patterns and submitted first to uniformly distributed load, and then to a load localized on the last artificial tooth. The saddles were then shortened and the tests repeated. The quantitative and qualitative analyses of stress intensity were done manually and by photography, respectively. For intragroup analyses the Wilcoxon test for paired samples was used, while for intergroup analyses Friedman and Wilcoxon tests were used to better identify the differences ( p < 0.05).
Results: The RPI retainer, followed by the T bar, demonstrated the best distribution of load between teeth and residual ridge. The circumferential retainer caused greater concentration of stress between dental apexes. Stress distribution was influenced by the type of retainer, the length of the saddle, and the manner of load application.
Conclusions: The long saddles and the uniformly distributed loads demonstrated better distribution of stress on support structures.     

SD球帽式附着体义齿与传统可摘局部义齿修复后咀嚼效率的评价

目的：比较研究sD球帽式附着体义齿和传统可摘局部义齿不同时期的咀嚼效率。方法：选择60例肯氏Ⅰ类牙列缺损患者,分别进行SD球帽式附着体义齿（30例）和传统可摘局部义齿（30例）修复,于修复前,修复后半年、1年、2年、4年测定其咀嚼效率,并作统计学分析。结果：在修复的各个时期,两种义齿的咀嚼效率两两比较,差异有统计学意义（P〈0．05）。结论：在肯氏I类牙列缺损修复的各个时期,SD球帽式附着体义齿的咀嚼效率高于传统可摘局部义齿。     

上前牙双牙列可摘义齿修复唇腭裂牙列缺损疗效评价

目的观察唇腭裂患者采用上颌前牙双牙列可摘义齿修复的临床疗效。方法 12例唇腭裂患者采用上颌前牙双牙列可摘义齿修复,术后随访2年,对修复后义齿使用情况、面容改善效果和口腔软硬组织健康状况等进行评价。结果 12例患者对面部美观、发音及咀嚼功能的改善、义齿使用效果、口腔健康状况和治疗费用等均比较满意。结论上颌前牙双牙列可摘义齿修复唇腭裂可以取得较好的临床效果,是一种简单、实用的修复方法。     

纯钛铸造支架可摘局部义齿62例临床疗效观察

目的评估纯钛铸造支架可摘局部义齿的临床应用效果。方法患者62例纯钛铸造支架可摘局部义齿69件,检查初戴就位情况,使用3个月、3年后,统计义齿性口炎发生率及患者对修复效果的评价。结果纯钛铸造支架可摘局部义齿就位顺利,固位好,轻巧舒适,修复3个月后无义齿性口炎发生,修复后3年义齿性口炎发生率低,为2.9%（2/69）。患者比较满意。结论纯钛铸造支架可摘局部义齿有很好的临床修复效果。     

An Evaluation of Microwave-Polymerized Resin Bases for Removable Partial Dentures

Purpose The hardness, porosity, and adaptation of removable partial dentures fabricated with one heat-polymerized denture base resin and two resins designed for microwave polymerization were evaluated. Materials and Methods Five prostheses were evaluated for each resin. Adaptation of the denture bases to the master cast was evaluated by spatial orientation and mean weight of residual impression material. The prostheses were then embedded in epoxy resin and sectioned for evaluation of resin hardness (Knoop hardness) and microporosity. Results There were no significant differences in the adaptation of the acrylic resin bases for Acron MC and Ch Lucitone. There was no significant difference in the mean Knoop hardness values for any of the resin bases near and away from the metal. None of the denture bases showed porosity greater than 100 μm. Conclusions Both resin bases formulated for microwave polymerization were effectively polymerized around metal frameworks without adverse effects on resin hardness or porosity. Justi Denture Base material had poorer base adaptation than the other two resins.     

A Seminar/Case-Based Approach to Teaching Removable Partial Dentures to Predoctoral Students

This article describes a seminar/case-based, instructional model designed to simulate removable partial denture (RPD) problem-solving and decision-making processes encountered in third-year clinic in dental school and in dental general practice. Groups of approximately 20 second-year students (in the 3-year program) meet in a series of six 1-hour seminars during the first days of the course. Following the seminars, students complete an exercise on mouth preparation and multiple clasp and major connector designs on prototype casts. This is followed by survey-design exercises on casts of dentitions representing six variations of RPD requirements. Instructors assist students during the practice phase of each class. Each 2-hour practice session is followed by a 1-hour practical examination. The last day of the course is devoted to a comprehensive final practical examination on both maxillary and mandibular casts, incorporating any of the design features previously studied.     

刷牙时间对可摘局部义齿基牙菌斑菌丛的影响

为了探讨配戴义齿人群中,刷牙对基牙菌斑、菌丛的影响,本实验分析了可摘局部义齿基牙软垢指数和菌丛的变化情况．结果表明,甲乙两组软垢指数间有非常显著性差异;而菌斑中粘性放线菌、变形链球菌及乳杆菌的百分比差异则不显．结果提示：每天保持一定的刷牙时间,能抑制菌斑的形成,但对致龋菌的生长却没有控制作用．因此,义齿配戴者除刷牙外,还应选用其它的义齿清洁产品,以预防义齿性疾病．