Int J Periodontics Restorative Dent. 2022 May-Jun;42(3):351-359. doi: 10.11607/prd.5073.
The clinical syndrome known as posterior bite collapse (PBC) consists of multiple, often pathognomonic factors that deviate from normal, or an occlusion wherein the posterior occlusion is compromised and may ultimately destroy the functional protective capacity of the entire dentition. Secondary clinical sequelae may include accelerated periodontitis progression, temporomandibular disorders (TMD), increasing mobility/fremitus, additional tooth loss, anterior flaring, and loss of occlusal vertical dimension. Etiologic factors may include tooth loss without replacement, orthodontic malocclusions and dentoskeletal disharmonies, periodontitis, accelerated retrograde occlusal/interproximal wear, severe caries, or iatrogenic and conformative dentistry. Not all PBC cases require treatment, but treatment is dependent upon the periodontium's stability and its ability to maintain its form and function. Treatment decisions can also be dependent upon periodontal health, caries, function, occlusion, TMD, esthetics, and phonetics. The purpose of this article is to provide general treatment guidelines based on form and function of the masticatory system for restoring a PBC case when treatment is necessary. This article does not discuss specific mechanics for restoring PBC cases.
被称为后牙咬合塌陷（PBC）的临床综合征由多种因素组成，这些因素通常具有特征性，与正常情况不同，或者后牙咬合受损，可能最终破坏整个牙齿的功能保护能力。次要的临床后果可能包括牙周炎进展加速、颞下颌关节紊乱（TMD）、增加的活动度/震颤、更多的牙齿丧失、前牙外展以及丧失正中关系。病因因素可能包括缺牙未修复、正畸错颌和牙颌骨不调、牙周炎、逆行性咬合/邻面磨损加速、严重龋齿，或医源性和顺应性牙科学。并非所有 PBC 病例都需要治疗，但治疗取决于牙周组织的稳定性及其维持形态和功能的能力。治疗决策还可能取决于牙周健康、龋齿、功能、咬合、TMD、美观和语音。本文的目的是提供基于咀嚼系统形态和功能的一般治疗指南，用于在需要治疗时恢复 PBC 病例。本文不讨论恢复 PBC 病例的具体力学。
