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后天近中(牙合)可引起前牙松动及其牙周支持组织的破坏。由于近中(牙合)妨碍上颌前部正常发育,并迫使下颌前伸,故影响面部外观。当正中咬合时,表现出垂直距离降低,看起来颏部与鼻部非常接近。后天近中(牙合)命名法甚多,如假性近中(牙合),假性颌前突,假性Ⅲ类错(牙合)等等。本文选择后天近中(牙合)命名的原因是,这种错(牙合)是在颌
The day after tomorrow (occlusion) can cause loosening of the anterior teeth and periodontal support tissue destruction. As the near (occlusion) hinder the normal development of the anterior maxilla, and forced the mandibular advance, it affects the facial appearance. When the middle bite, showing the vertical distance decreased, it seems chin and nasal very close. The day after tomorrow (occlusal) nomenclature is much, such as pseudo-near-mid (occlusal), pseudo-maxillary protrusion, pseudo-class III malocclusion (occlusion) and so on. This article chooses the day after tomorrow (occlusion) named because the wrong occlusion (occlusion) is in the jaw