Senty E L
Angle Orthod. 1976 Oct;46(4):365-71. doi: 10.1043/0003-3219(1976)046<0365:TMCAML>2.0.CO;2.
When maxillary cuspids are moved mesially or if they are absent, it may be safe to assume: 1. There is no apparent change in facial contour. 2. The first premolar can serve as an adequate substitute for the cuspid, both functionally and esthetically. 3. If all spaces are closed, occlusal equilibration will usually be necessary to effect acceptable posterior occlusion. Mesiodistal contouring of the cuspids probably accentuates the problem since it seems to exaggerate any tooth size discrepancy which may exist between maxillary and mandibular teeth. 4. Unilateral space closure displays functional deficiencies more frequently on the side of closure. 5. Varying degrees of shade imbalance between the cuspid and central incisor can be expected, and the degree of contrast can be accurately predicted by using the mandibular cuspid as a guide. This is particularly important when the maxillary canines are impacted or unerupted.
当上颌尖牙向近中移动或缺失时，可以有把握地认为：1. 面部轮廓无明显变化。2. 第一前磨牙在功能和美观方面都可作为尖牙的适当替代。3. 如果所有间隙都关闭，通常需要进行咬合平衡以实现可接受的后牙咬合。尖牙的近远中外形修整可能会加剧问题，因为这似乎会夸大上下颌牙齿之间可能存在的任何牙体大小差异。4. 单侧间隙关闭时，关闭侧更常出现功能缺陷。5. 尖牙与中切牙之间会出现不同程度的色泽不均，以下颌尖牙为参照可准确预测对比程度。当上颌尖牙埋伏阻生或未萌出时，这一点尤为重要。
