Abstract：Objective To investigate the effect of modified crown extension and orthodontic traction plus crown extension in the treatment of upper anterior gingival defect. Methods A total of 150 patients with anterior gingival defect diagnosed by the Department of Stomatology, Hangzhou Red Cross Hospital of Zhejiang Province from June 2015 to October 2018 were selected and divided into control group and observation group according to random number table method, with 75 patients in each group. The control group was treated with modified crown extension, while the observation group was given orthodontic traction plus crown extension. The results of restoration and periodontal health, including tooth mobility (TM), probing pocket depth (PPD), gingival index (GI), gingival sulcus bleeding index (SBI), plaque index (PLI), were compared between the two groups. Results There was no significant difference in the rate of excellent and good repair between the two groups at 1 month after operation (P > 0.05). PPD, SBI, PLI, GI and TM of the two groups at 1 month after operation were lower than those before operation (P < 0.01), but there were no significant differences in PPD, SBI, PLI, GI and TM between the two groups at 1 month after operation (P > 0.05). The crown height at 6 and 12 weeks after operation were higher than that at 2 weeks after operation (P < 0.01); there was no significant difference in the incidence of follow-up complications between the two groups (P > 0.05). Conclusion Modified crown extension, orthodontic traction and crown extension can effectively repair the upper anterior gingival defect, improve the periodontal health status, promote crown height recovery, and have fewer postoperative complications. The treatment method can be selected according to the actual situation and needs of the individual.
[1] 王吓勇，朱亚桥，陈丽娟，等.玻璃离子修复上颌前牙龈下牙体缺损的疗效观察[J].牙体牙髓牙周病学杂志，2016， 26（2）：107-109.
[2] Sánchez Isis，Sadja GQ，Jacob S. Modified Lip Repositioning with Esthetic Crown Lengthening：A Combined Approach to Treating Excessive Gingival Display [J]. Int J Periodont Rest，2017，37（1）：e130-e134.
[3] 张志愿.口腔科学[M].9版.北京：人民卫生出版社，2018.
[4] 刘曙光，刘琪，袁廉蜀，等.牙体缺损达龈下前牙行牙冠延长术后冠修复的临床效果[J].宁夏医学杂志，2017，39（6）：558-559.
[5] 卢文博，王京阳.牙体缺损达龈下前牙行牙冠延长术后冠修复的临床效果[J].中国医药导报，2015，12（1）：52-55.
[6] 黄国伟，李婧.无托槽隐形矫治器与固定矫治器对牙周影响的研究[J].中华口腔正畸学杂志，2015，22（1）：32-34.
[7] 濮莉莉，陈春晖，李国民，等.固定-活动义齿联合修复牙列缺损的疗效及患者生活质量评价[J].中华全科医学，2017，15（11）：1873-1875.
[8] 顾旭伟.根管治疗结合牙周翻瓣术对牙髓-牙周综合征的疗效分析[J].中华全科医学，2015，13（3）：502-503.
[9] 陈栋梁.正畸牵引联合牙冠延长术治疗上前牙复杂根折的疗效观察[J].河南医学高等专科学校学报，2015，27（6）：726-727.
[10] Mantovani MB，Souza EC，Mantovani MB，et al. Use of modified lip repositioning technique associated with esthetic crown lengthening for treatment of excessive gingival display：A case report of multiple etiologies [J].J Indian Soc Periodontol，2015，20（1）：82-87.
[11] Oppermann RV，Gomes SC，Cavagni J. Response to Proximal Restorations Placed Either Subgingivally or Following Crown Lengthening in Patients with No History of Periodontal Disease [J]. Int J Periodontics Restorative Dent，2016，36（1）：117-124.
[12] Paolantoni G，Sammartino G，Marenzi G，et al. Comparison of three different crown-lengthening procedures in the maxillary anterior esthetic regions [J]. Quintessence Int，2016，47（5）：407.
[13] 刘潇.改良牙冠延长术与正畸牵引加牙冠延长术对上前牙复杂根折治疗效果的对比研究[J].临床和实验医学杂志，2017，16（8）：812-815.
[14] Nazzal AM，Trojan TM，Green M，et al. Uprighting and Periodontally Accelerated Osteogenic Orthodontics as an Alternative to Surgical Crown Lengthening [J]. J Clin Orthod，2016，50（8）：507.
[15] 袁冬，刘树军.应用改良冠延长术桩核冠修复上颌磨牙冠根折的临床观察[J].北京口腔医学，2016，24（5）：276-279.
[16] 王明辉.改良牙冠延长术和正畸牵引加牙冠延长术治疗上前龈下牙体缺损的效果观察[J].国际医药卫生导报，2018，24（9）：1388-1391.
[17] Choi YJ，Huh JK，Chung CJ，et al. Rescue therapy with orthodontic traction to manage severely impacted mandibular second molars and to restore an alveolar bone defect [J]. Am J Orthod Dentofacial Orthop，2016， 150（2）：352-363.
[18] 牟兴月.改良牙冠延长术与正畸牵引加牙冠延长术对上前牙复杂根折治疗效果的比较[J].中国医疗美容，2016， 6（5）：64-66.
[19] 陈克.改良牙冠延长术与正畸牵引加牙冠延长术治疗上前牙龈下牙体缺损的疗效比较[J].现代中西医结合杂志，2015，24（12）：1294-1295.
2019, Vol. 16 
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