Private practice, Sterling, Marquette University, Milwaukee, Wis., USA.
J Prosthet Dent. 2011 Jul;106(1):48-56. doi: 10.1016/S0022-3913(11)60093-0.
Current demographic information on the number and types of removable partial dentures is lacking in the prosthodontic literature.
This study was designed to investigate patterns of tooth loss in patients receiving removable partial dentures (RPDs) in eastern Wisconsin.
Digital images (1502) of casts at 5 dental laboratories in eastern Wisconsin were collected. Any prescription requesting fabrication of a removable partial denture was photographed twice. The first photograph was made immediately upon arrival at the laboratory, while the second photograph was made immediately before being returned to the prescribing dentist for the first time. A calibrated investigator analyzed all the photographs for Kennedy Classification, type of RPD, major connector, and other details. Data were analyzed with descriptive statistics. Fisher's exact test was used to confirm repeatability.
Kennedy Class I was the most common RPD with a frequency of 38.4%. More than 40% of prescriptions had no design input from the dentist. One in 3 RPDs used acrylic resin or flexible frameworks. One in 5 RPDs had no rests. The horseshoe major connector was the most common maxillary major connector, while the lingual plate was the most common in the mandible.
RPDs remain a common prosthodontic treatment in this region. Non-metal RPD frameworks are a common treatment type and rarely include rests. These data indicate a changing partially edentulous patient population and a variable commitment to standard levels of prosthodontic care.
目前在口腔修复学文献中缺乏关于可摘局部义齿数量和类型的人口统计学信息。
本研究旨在调查威斯康星州东部接受可摘局部义齿（RPD）治疗的患者的牙齿缺失模式。
收集了威斯康星州东部 5 家牙科实验室的 1502 个模型的数字图像。任何要求制作可摘局部义齿的处方都被拍摄了两次。第一次拍摄是在模型到达实验室时进行的，第二次拍摄是在第一次返回给开处方的牙医之前进行的。一位经过校准的调查员分析了所有照片的 Kennedy 分类、RPD 类型、主要连接体和其他细节。数据采用描述性统计进行分析。Fisher 确切检验用于确认可重复性。
Kennedy 分类 I 是最常见的 RPD，频率为 38.4%。超过 40%的处方没有来自牙医的设计输入。三分之一的 RPD 使用丙烯酸树脂或弹性框架。五分之一的 RPD 没有休息。马蹄形主要连接体是最常见的上颌主要连接体，而舌板是下颌最常见的连接体。
在该地区，RPD 仍然是一种常见的口腔修复治疗方法。非金属 RPD 框架是一种常见的治疗类型，很少包括休息。这些数据表明，部分缺牙患者群体正在发生变化，并且对标准水平的口腔修复护理的承诺也存在差异。
