Isiekwe M C, Sowemimo G O
Cleft Palate J. 1984 Oct;21(4):323-8.
Cephalometric values have been established for twenty adult Nigerians, three adults with unrepaired unilateral cleft lip and alveolus (UCLA) and two adults with unrepaired unilateral cleft lip and palate (UCLP). Normal values for SNA and SNB were 85.5 degrees +/- 3.5 and 82.7 degrees +/- 3.2 respectively, and the mean ANB values were 3.1 degrees +/- 0.8. The cephalometric data for unilateral cleft lip and alveolus (UCLA) subjects whose clefts were not repaired until adulthood did not differ significantly from normal controls. However, in two adults with unrepaired unilateral cleft lip and palate (UCLP), the SNA values were less than normal controls and the ANB values were reduced to negative levels. Bimaxillary protrusion of the incisors appears to be a normal feature in Nigerians. There appears to be inhibition of maxillary growth in UCLP patients but not in UCLA cases.
已确定了20名成年尼日利亚人的头影测量值，3名单侧唇腭裂未修复的成年人（UCLA）以及2名单侧唇腭裂未修复的成年人（UCLP）的头影测量值。SNA和SNB的正常值分别为85.5度±3.5度和82.7度±3.2度，平均ANB值为3.1度±0.8度。单侧唇腭裂（UCLA）患者直到成年才修复腭裂，其头影测量数据与正常对照组无显著差异。然而，在2名单侧唇腭裂未修复的成年人（UCLP）中，SNA值低于正常对照组，ANB值降至负值。尼日利亚人的切牙双颌前突似乎是一种正常特征。UCLP患者似乎存在上颌生长抑制，但UCLA患者不存在。
