论文部分内容阅读
恒牙已经萌出,相应位置的乳牙尚未脱落,叫做乳牙滞留。乳牙滞留是错(牙合)畸形常见的发病原因之一。为了深入探讨乳牙滞留与错(牙合)畸形之间的关
Permanent teeth have erupted, the corresponding position of deciduous teeth is not off, called deciduous teeth stay. Defecation of deciduous teeth is one of the common causes of malocclusion. In order to investigate the relationship between deciduous teeth and malocclusion