Helm S, Kreiborg S, Solow B
Am J Orthod. 1984 May;85(5):393-400. doi: 10.1016/0002-9416(84)90160-x.
It has been argued that malocclusion may predispose to tooth loss and functional disorders of the masticatory system. It was the purpose of this study to examine relationships between untreated malocclusion, recorded at adolescence, and self-reported tooth loss and functional disorders in adulthood. In 1965-66, the occurrence of morphologic traits of malocclusion was recorded in 977 Danish adolescents who did not have access to organized orthodontic care. Fifteen years later, 841 (86%) of these subjects responded to a questionnaire screening for tooth loss, symptoms involving the temporomandibular joints and muscles, and some other symptoms of dysfunction. The occurrence of malocclusion was related to the symptoms of the temporomandibular joints and muscles and other functional symptoms. Only a few significant coefficients of correlation were observed. Extreme maxillary overjet (greater than 9 mm) and frontal open bite showed significant correlations with unsatisfactory biting ability. Crossbite was correlated positively with speech defects but negatively with tenderness or fatigue of the cheeks; unilateral crossbite was associated with locking of the mandible. It was concluded that the untreated morphologic traits of malocclusion did not seem to predispose to tooth loss or functional disorders of the masticatory system as reported at the age of 30 years.
有人认为，错牙合畸形可能易导致牙齿脱落和咀嚼系统功能紊乱。本研究的目的是调查青春期记录的未经治疗的错牙合畸形与成年后自我报告的牙齿脱落和功能紊乱之间的关系。1965 - 1966年，在977名无法获得正畸治疗的丹麦青少年中记录了错牙合畸形的形态特征。15年后，这些受试者中的841人（86%）回复了一份关于牙齿脱落、颞下颌关节和肌肉症状以及其他一些功能障碍症状的问卷调查。错牙合畸形的发生率与颞下颌关节和肌肉症状以及其他功能症状有关。仅观察到少数显著的相关系数。极度上颌前突（大于9毫米）和前牙开牙合与咬合能力不佳显著相关。反牙合与言语缺陷呈正相关，但与脸颊压痛或疲劳呈负相关；单侧反牙合与下颌锁定有关。得出的结论是，未经治疗的错牙合畸形形态特征似乎不会像30岁时报告的那样易导致牙齿脱落或咀嚼系统功能紊乱。
