上颌中切牙倒置阻生的正畸治疗

上颌中切牙倒置阻生，可在颌面外科的配合下，给予正畸治疗。术前正畸以开拓间隙，术中注意保持牙乳头、牙囊，术后正畸力应微弱。年龄愈小，效果愈好。     

上颌中切牙阻生的临床表现和治疗分析研究

目的 :对上颌中切牙阻生的病因及治疗方法进行研究。方法 :选取 64例上颌中切牙阻生病例 ,从临床角度对阻生牙进行诊断分类 ,采用不同的方法进行矫治 ,并对矫治效果进行评估。结果 :采取适宜有效的治疗办法 ,可取得满意的治疗效果 ,中切牙萌出到位率达到 88% ,牙周膜愈合成功率达 96% ,活髓牙成功率达 90 % ,牙龈形态良好者达 75 %。结论 :根据临床分类选择合适的治疗方法 ,是治疗阻生中切牙成功的关键。     

替牙期上颌埋伏中切牙的矫治

目的：探讨替牙期上颌中切牙埋伏阻生的临床诊断、分类和矫治。方法：选取28例替牙期埋伏阻生的上颌中切牙，对其进行三维定位诊断分类后，采用不同的矫治方法进行治疗，并总结其矫治效果。结果：20例患牙采取恰当的导萌、助萌方法，萌出到位，牙轴基本正常者达90．2％，牙髓活力正常、牙周健康、牙龈形态良好者达93％；8例患牙去除固定矫治后，均建立了良好的咬合关系。结论：早期正确的诊断和恰当的矫治是矫治成功的保证。     

上颌中切牙间四个多生牙1例报告

多生牙好发于上颌前牙区 ,多呈圆锥状 ,单个或 2个以上颌两中切牙之间或唇腭侧萌出较多见。笔者遇到 1例四颗多生牙 ,两颗埋伏两颗对称分布在上颌中切牙之间的病例 ,现报告如下。患者 ,男性 ,10岁。因上颌中切牙间多生两颗畸形牙齿来我院求治。专科检查 :颌面部发育正常 ,上颌两中切牙间有两颗多生牙 ,牙冠较大近似中切牙 ,舌侧有一多生牙尖 ,近中轻度扭转 ,之间有 2ｍｍ间隙。 11在 2 2的远中 3 3的位置萌出 ,1外翻扭转 4 5°,1外翻扭转 3 0°。 2 2 在中切牙近中腭侧萌出 ,与两颗萌出的多生牙重叠 ,ⅢⅡⅠⅠⅡⅢ 已脱落 ,3 3未萌出 ,局部…     

右侧上颌中切牙双根1例

患者女 ,4 0岁 ,2 0 0 2 - 11- 2 4就诊要求拔除右侧上颌中切牙。检查 :右侧上颌中切牙为残根 ,根管口可见部分牙胶尖存在 ,Ⅰ度松动 ,有轻微叩痛 ,唇侧牙龈有窦道。无拔牙禁忌症。于局麻下行右侧上颌中切牙拔除术 ,术中反复摇动 ,拔下该牙。该牙有颊、腭两根 ,腭根较颊根短。右侧上颌中切牙双根1例@徐晓慧$云岩区人民医院口腔医疗中心!贵州贵阳550002     

上颌恒中切牙区埋伏多生牙临床分析

收集１７６例上颌恒中切牙区埋伏多生牙患者，根据解剖特点将该区分成九个区，采用诊，摄一张牙片确定多生牙埋伏位置。结果以为，埋伏多生牙多数位于腭侧，单枚较多，双枚中一正位一例位较多，提示发现已萌正位多生牙需排除另一倒位埋伏牙可能，牙片显示多生牙冠上有半月形透射影，可刮出囊袋，     

倒置弯根上颌中切牙正畸牵引1例临床报道

本文报道一例无明确外伤史的倒置弯根上中切牙病例,经二个阶段手术暴露和正畸牵引后牙冠排入牙列,而根和牙周出现异常结果。1　临床资料9岁女孩,因左侧上中切牙未萌就诊。诉乳牙期无创伤史。患儿侧貌协调,Ⅰ类骨性关系。口内检查:混合牙列早期,后牙中性关系,切牙覆牙合覆盖小于正常。21未萌,间隙保持。前庭沟黏膜转折处可触及骨性膨隆。X线片示左上颌中切牙牙冠唇向倒置,弯根,根发育较完全。邻牙根尖有轻微外吸收征象,牙髓活力正常。治疗方案:①拔除弯根牙,留隙镶复。②外科暴露加正畸牵引,直至排入牙列。交待牵引可能不成功,或因冠根畸形…     

上颔中切牙倒置阻生的正畸治疗(附9例分析)

上颌中切牙倒置阻生，可在颌面外科的配合下，给予正畸治疗。术前正畸以开拓间隙，术中注意保护牙乳头、牙囊，术后正畸力应微弱。年龄愈小，预后效果愈好。     

埋伏弯根上颌中切牙序列矫治的研究

目的探讨埋伏弯根上颌中切牙有效的正畸牵引治疗方法。方法选择11例患者共12颗埋伏弯根上颌中切牙为研究对象,常规拍摄定位X线片,配合口内检查、模型分析等,确定埋伏牙的位置及其与邻牙的相互关系,采用封闭式导萌、选择性根管治疗及根尖切除术、修复治疗等方法进行矫治。结果12颗埋伏牙通过治疗后顺利进入正常牙列,未见牙根吸收粘连,建立了良好的咬合关系。9例唇侧埋伏弯根上颌中切牙患者的临床牙冠唇倾角度较大,4例根尖位于唇侧黏膜下,进行了根管治疗加根尖切除术,其中1例行烤瓷冠改形修复;其余5例未做根管治疗,暂行观察。2例腭侧埋伏弯根上颌中切牙的疗效稳定。结论埋伏弯根上颌中切牙采用序列矫治可以取得良好的美观和功能效果。     

正畸改善上切牙个别缺失的治疗效果

目的探讨正畸关闭间隙法治疗上切牙缺失的适应症,矫治方法及临床效果。方法利用正畸关闭间隙法对９例不同数目上切牙缺失的病例进行矫治。结果９例病例治疗后均达到较理想的临床效果。结论对上切牙缺失的治疗,正畸关闭间隙法能实现最大限度的美观、功能及稳定。     

Orthodontic treatment of a congenitally missing maxillary lateral incisor

Clinicians agree that, regardless of gender or race, tooth agenesis has become more prominent in recent societies. The congenital absence of one or more maxillary lateral incisors poses a challenge to effective treatment planning for the restorative dentist. However, the one-sided orthodontic approach of just moving canines mesially to eliminate restorative procedures leads to compromise. Adult patients presenting with malocclusions, missing lateral incisors, or anterior crowding but who fail to get proper orthodontic treatment, requesting instead esthetic solutions that do not establish a stable occlusion, proper alignment, and proper axial inclination of the teeth will have compromised esthetic and periodontal results. An evaluation of anterior smile esthetics must include both static and dynamic evaluations of frontal and profile views to optimize both dental and facial appearance. This article presents how orthodontics is combined with other specialties in treating a congenitally missing lateral incisor. One case is used to illustrate how orthodontic treatment is progressed in collaboration with other specialists. CLINICAL SIGNIFICANCE: Patients with missing teeth, crowding, midline deviation, unesthetic gingival contours, or other restorative needs may require the interaction between various specialists. For the successful treatment of orthodontic-restorative patients, an interdisciplinary team effort is vital.     

拔除下切牙正畸矫治的临床研究

目的:探讨拔除正畸患者下切牙的各种适应证及矫治方法。方法:临床选择42例患者(男16例,女26例),具体分为4种情况:Bolton指数不调,前牙比过大;III类错前牙反;先天缺1颗下切牙;某些牙周病等。治疗之前均采用拔除单个下切牙或拔除下切牙外还配合其它牙齿的拔除,使用标准方丝弓矫治技术和其它辅助治疗方法。结果:前2种情况拔除单个下切牙,第3种情况拔除1个下切牙外还拔除上颌2个第一前磨牙,下颌个别牙需要磨改外形,第4种情况拔除1个下切牙外上颌多个牙要配合邻面去釉,42个病例均取得满意的矫治效果,前牙覆、覆盖正常,后牙咬合关系好。结论:认真掌握好临床拔除下切牙的适应证并配合其它方法,能取得满意的临床矫治效果。     

Orthodontic movement of a dilacerated maxillary incisor in mixed dentition treatment

Abstract –  Dilaceration is a dental deformity characterized by an angulation between crown and root causing non-eruption of the tooth. It generally occurs following trauma to the deciduous dentition the apices of which lie close to the permanent tooth buds. Surgical extraction used to be the first choice in treating the severely dilacerated teeth. In this case report, it is described how a dilacerated central incisor was successfully moved into alignment in a young patient with proper surgical and orthodontic management avoiding use of prosthetic/implant devices. The panoramic radiograph after the traumatic injury is compared with the one at the end of treatment. The results were sustainable over long-term in both periodontal and aesthetic terms.     

Orthodontic treatment of an impacted dilacerated maxillary incisor: a case report

Dilaceration is one of the causes of permanent maxillary incisor eruption failure. It is a developmental distortion of the form of a tooth that commonly occurs in permanent incisors as result of trauma to the primary predecessors whose apices lie close to the permanent tooth germ. We present a case of post-traumatic impaction of a dilacerated central maxillary left incisor in a young patient with a class II malocclusion.     

Orthodontic treatment of an impacted dilacerated maxillary central incisor combined with surgical exposure and apicoectomy

The impacted incisor was moved into its proper position with surgical exposure and orthodontic traction. Although apicoectomy was performed during the orthodontic treatment, the incisor showed good stability after the long retention period.     

Orthodontic management of an impacted maxillary incisor due to odontoma

Odontomas are a heterogeneous group of jaw bone lesions, classified as odontogenic tumors which usually include well-diversified dental tissues. Odontomas are the most common type of odontogenic tumors and generally they are asymptomatic. Two types of odontomas are described: compound and complex based on either the appearance of well-organized tooth-like structures (compound odontomas) or on a mass of disorganized odontogenic tissues (complex odontomas). Compound odontomas have a predilection for the anterior maxilla, whereas complex odontomas have a predilection for the posterior mandible. Odontomas frequently interfere with eruption of teeth leading to their impaction. This is a case report of a 14-year-old girl with an unerupted maxillary right central incisor due to a complex composite odontoma a rare occurrence in anterior maxilla. Surgical excision of the odontoma and orthodontic treatment to get the impacted maxillary right central incisor into alignment is discussed.