Department of Dental and Maxillo-Facial Sciences, Section of Orthodontics and Gnathology, University of Naples 'Federico II' and.
Eur J Orthod. 2013 Dec;35(6):737-44. doi: 10.1093/ejo/cjt024. Epub 2013 Apr 18.
Among different malocclusions, posterior crossbite is thought to have a strong impact on the correct functioning of the masticatory system.
To assess, by systematically reviewing the literature, the association between posterior crossbite and different temporomandibular disorder (TMD) diagnosis: disc displacement and masticatory muscle pain.
A literature survey covering the period from January 1965 to April 2012 was performed. Two reviewers extracted the data independently and assessed the quality of the studies.
The search strategy resulted in 2919 citations, of which 43 met the inclusion criteria. The scientific and methodological quality of these studies was found to be medium-low, independently by association reported. In several studies, posterior crossbite is reported to be associated to the development of disc displacement, muscular pain, and tenderness, possibly linked to a skeletal and muscular adaptation of the stomatognathic system. However, the lack of consistency of the results reported deeply reduces the external validity of the studies, with a consequent impossibility to draw definite conclusions.
It is not possible to establish an association between posterior crossbite, muscle pain, and disc displacement because the distribution of the studies supporting or not supporting the association is similar. The consequences of posterior crossbite on the development of TMDs deserve further investigations, with high sample size, well-defined diagnostic criteria, and rigorous scientific methodologies. Finally, long-term controlled studies are needed to identify posterior crossbite as a possible risk factor for TMDs.
在不同的错颌畸形中，后牙反颌被认为对咀嚼系统的正常功能有很大的影响。
通过系统综述文献评估后牙反颌与不同颞下颌关节紊乱（TMD）诊断的关系：关节盘移位和咀嚼肌疼痛。
对 1965 年 1 月至 2012 年 4 月期间的文献进行了调查。两位审查员独立提取数据并评估研究的质量。
搜索策略共产生 2919 条引文，其中 43 条符合纳入标准。这些研究的科学和方法学质量被发现是中等偏低的，这是由关联报告独立确定的。在几项研究中，后牙反颌与关节盘移位、肌肉疼痛和压痛有关，这可能与口颌系统的骨骼和肌肉适应性有关。然而，报告结果的一致性缺乏严重降低了研究的外部有效性，使得无法得出明确的结论。
由于支持或不支持这种关联的研究分布相似，因此无法确定后牙反颌、肌肉疼痛和关节盘移位之间的关联。后牙反颌对 TMD 发展的影响值得进一步研究，需要有大样本量、明确的诊断标准和严格的科学方法。最后，需要进行长期的对照研究，以确定后牙反颌是否是 TMD 的一个可能的危险因素。
