黄金比例面具对种植体支抗压低上切牙改善露龈笑的美学评价初探

目的 利用黄金比例面具对露龈笑进行分类,并评价使用种植体支抗压低上切牙后患者露龈笑的改善程度,探讨种植体支抗压低上切牙治疗露龈笑过程中唇-齿-龈关系的变化趋势.方法 选择17例露龈笑患者,女性16例,男性1例,年龄16～40岁,平均26.2岁.于上颌侧切牙和尖牙间唇侧植入微螺钉种植体支抗压低上切牙,在Photoshop软件中将正面微笑黄金比例面具标准化模板与治疗前后的正面微笑像重叠,比较治疗前后正面微笑像唇、齿、龈在黄金比例面具相应区域内所占比例的变化,定性分析并评价露龈笑的改善程度.结果 17例患者的上切牙均被成功压低,露龈笑明显改善,疗程平均9.8个月.通过黄金比例面具分析发现,治疗前露龈笑形成原因不同,治疗后患者正面微笑像唇-齿-龈关系基本符合黄金比例面具的唇-齿-龈关系.结论 通过使用黄金比例面具对露龈笑患者的唇-齿-龈关系进行分析,可以对使用种植体支抗压低前牙改善露龈笑患者的矫治效果进行初步临床评价.

Gummy smile correction by intruding upper incisors with mini-screw implant: an esthetic evaluation by the golden facial mask

Objective To use a golden facial mask to classify the gummy smile and then to evaluate the effectiveness of correction gummy smile by intruding upper incisors and canines with mini-screw implants. Methods Sixteen female and 1 male gummy smile patients with an age range of 16-40 years, 26. 2 years on average, were involved in the study. The mini-screw implants were inserted buccally between upper lateral incisors and canines on both sides for intruding upper incisors together with fixed appliance. The golden facial mask was introduced to analyze the frontal view of smile pre- and post-treatment. Results Gummy smile of all patients involved in the study was reduced by intruding upper incisors and canines, and the average period for intruding about 9. 8 months. According to the analysis of the golden facial mask, the reasons of gummy smile in different patients were different before treatment. However, the lips, teeth and gingiva were almost coincident with the golden facial mask after treatment. Conclusions Analyzing the relationship among lip, teeth and gingiva by the golden facial mask, the inprovement of gummy smile by using mini-screw implants to intrude the upper incisors can be evaluated.