Sadig Walid M, Idowu Ayodeji T
Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Kingdom of Saudi Arabia.
J Contemp Dent Pract. 2002 Nov 15;3(4):40-53.
Determination of the incidence of various classes of removable partial dentures (RPDs) including their designs and their comparison with previous studies provide clinically useful information for dental training and continuing education. The purpose of this study is to determine the pattern of partial edentulism, the major connector, clasping, and design of 740 cobalt chromium RPD frameworks constructed for a selected population in Saudi Arabia. RPD framework design information and patient personal data were obtained from the work authorization form and the dental records respectively. The relationship among age, sex, nationality, and various Kennedy classes of the RPDs was determined by chi-square statistical analysis. Results indicate that Kennedy Class III removable partial dentures were the most frequently constructed. Although gender had no significant relationship, age and nationality had statistically significant relationship with the distribution of various Kennedy classes of removable partial dentures. Lingual bars and anterior posterior palatal straps were the most commonly used mandibular and maxillary major connectors. Lingual and palatal plates, however, were more frequently used than any major connectors for distal extension RPDs. Comparison with previous findings confirms the established variation in designing RPDs. The distribution of partially edentulousness revealed the influence of the general pattern of tooth loss, which could be modified by patient's demands and socio-economic status. Practitioners need to avail themselves fully of basic RPD design principles concerning the most commonly encountered classes of RPDs.
确定各类可摘局部义齿（RPD）的发病率，包括其设计，并与以往研究进行比较，可为牙科培训和继续教育提供临床有用信息。本研究的目的是确定为沙特阿拉伯特定人群制作的740个钴铬RPD框架的部分牙列缺失模式、主要连接体、卡环及设计。RPD框架设计信息和患者个人数据分别从工作授权表和牙科记录中获取。通过卡方统计分析确定年龄、性别、国籍与RPD不同肯尼迪分类之间的关系。结果表明，肯尼迪III类可摘局部义齿是制作最频繁的。虽然性别无显著关系，但年龄和国籍与不同肯尼迪分类可摘局部义齿的分布有统计学显著关系。舌杆和前后腭杆是下颌和上颌最常用的主要连接体。然而，对于远中游离端RPD，舌板和腭板比任何主要连接体使用更频繁。与以往研究结果比较证实了RPD设计中已确定的差异。部分牙列缺失的分布揭示了牙齿缺失总体模式的影响，这可能会因患者需求和社会经济状况而改变。从业者需要充分利用有关最常见RPD分类的基本RPD设计原则。
