Suzuki A, Watanabe M, Nakano M, Takahama Y
Department of Orthodontics, Faculty of Dentistry, Kyushu University, Fukuoka, Japan.
Cleft Palate Craniofac J. 1992 Jul;29(4):380-4. doi: 10.1597/1545-1569_1992_029_0380_mliosw_2.3.co_2.
Maxillary lateral incisors on the alveolar cleft were investigated in 431 cleft children registered in the Department of Orthodontics, Kyushu University Dental Hospital. The majority of primary maxillary lateral incisors were located on the distal side of the alveolar cleft in both unilateral cleft lip and alveolus (UCLA) and unilateral cleft lip and palate (UCLP) subjects. Permanent teeth in UCLA tend to be located distally, but in UCLP they tend to be congenitally absent (p less than .01). The majority of primary teeth had normal shapes; the majority of permanent teeth were of intermediate type or were missing congenitally. One third of the UCLA and one half of the UCLP subjects who had primary maxillary lateral incisors were not followed by permanent replacements. The location of the majority of permanent maxillary lateral incisors tallied with that of the primary ones except in four UCLA, ten UCLP, and two bilateral cleft lip and palate (BCLP) subjects. Four UCLA and ten UCLP subjects who had primary lateral incisors on the distal side were followed by their permanent successors on the mesial side. Three UCLP and one BCLP subjects had permanent maxillary lateral incisors even though they had no temporary predecessors.
对九州大学牙医院正畸科登记的431名唇腭裂患儿的牙槽嵴裂处上颌侧切牙进行了研究。在单侧唇裂合并牙槽突裂（UCLA）和单侧唇裂合并腭裂（UCLP）患者中，大多数上颌乳侧切牙位于牙槽嵴裂的远中侧。UCLA患者的恒牙倾向于位于远中，但在UCLP患者中，恒牙往往先天性缺失（p<0.01）。大多数乳牙形态正常；大多数恒牙为中间型或先天性缺失。有上颌乳侧切牙的UCLA患者中有三分之一、UCLP患者中有一半没有恒牙替换。除了4例UCLA、10例UCLP和2例双侧唇裂合并腭裂（BCLP）患者外，大多数上颌恒侧切牙的位置与乳牙一致。4例UCLA和10例UCLP患者的乳侧切牙位于远中侧，其恒牙继承牙位于近中侧。3例UCLP和1例BCLP患者即使没有乳牙前驱牙也有上颌恒侧切牙。
