牙冠延长术；根牵引术；牙龈切除术；龈沟深度。
The crown extension technique; The root hauling technique; The gum excision; The depth of gingival sulcus.
美学牙冠延长术通常以健康、舒适、美观为主要目的。
Aesthetic crown lengthening surgery usually aims at a healthy, good-looking, functional and comfortable result.
目的探讨牙冠延长术对前牙残根的保存修复效果的影响。
Objective to investigate the effects of surgical crown lengthening on conservative restoration in anterior residual root.
目的观察牙冠延长术治疗断缘位于龈下的冠根联合折断牙的临床效果。
Objective:To observe the clinical effect of tooth extrusion with progressive methods for anterior teeth with crown-root fracture.
摘要：目的比较牙冠延长术与牙龈切除术用于残根残冠桩冠修复中的疗效。
Abstract: Objective to compare the restorative effects of crown lengthening surgery and gingivectomy on dowel crown of deep-seated subgingival teeth fracture.
方法：对38颗牙体缺损达龈下的患牙行牙冠延长术，以恢复患牙的生物学宽度。
Methods:On 38 teeth due to various crown damages or vertical fractures in subgingival lesions were performed with surgical crown lengthening in order to achieve biologic width.
结论水激光在美容区牙冠延长术中能较快获得龈缘的稳定性以及正常的牙周附着。
Conclusions Waterlase can achieve stability of gingival margin and gain normal periodontal attachment faster in crown lengthening surgery in aesthetic area.
目的：对于上前牙外伤后行牙冠延长术的患者，探讨其术后美容性修复方法的选择及其效果。
Objective Discussing the selection and effect after cosmetic prosthesis for the patients who perform crown lengthening after superior anterior tooth injury.
目的：观察在烤瓷牙体制备同时行牙冠延长术这一方法对牙龈美观改善的效果和对牙龈健康的影响。
Objective: to study the effect of tooth preparation, meanwhile elongating the crown, on improvement of gingival aesthetics and gingival health after ceramic prosthesis.
结论：牙龈切除术与牙冠延长术应用于牙体劈裂达龈下较深部位患牙均能明显改善龈袋深度，而后者的临床疗效优于前者。
Conclusion: Both gingivectomy and prolongation of dental crown could shorten the depths of the gingival pocket. The clinical effect of the latter is better than that of the former.
方法：对27例行牙冠延长术的患者进行常规的前牙美容修复，其中16例采用单纯桩冠修复，11例采用综合法进行美容修复。
Methods Among 27 cases who perform cosmetic prosthesis for anterior tooth after crown lengthening, there are 16 cases with post crown, 11 cases with comprehensive prosthesis.
方法：对27例行牙冠延长术的患者进行常规的前牙美容修复，其中16例采用单纯桩冠修复，11例采用综合法进行美容修复。
Methods Among 27 cases who perform cosmetic prosthesis for anterior tooth after crown lengthening, there are 16 cases with post crown, 11 cases with comprehensive prosthesis.
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