外伤全脱位牙自体再植术的临床观察研究

目的：分析６０个外伤全脱位前牙即期再植的随访结果总结经验。方法：详细记录牙离体时间、手术及术后处理情况,定期对患者进行随访。结果：６０个脱位牙再植后临床疗效优３７个（６１．７％）、良１８个（３０．０％）、差５个牙（８．３％）,３个牙１年内拔除。３年成功率８３．０％、５年成功率６１．７％。判断为牙周膜愈合２０个、骨性愈合３５个、纤维愈合５个牙。牙髓活力测定,活力阳性２３个、阴性３７个。术后对２０个牙施行了根管治疗。结论：细心保护脱位牙根面牙周膜、良好固定、预防感染、防止咬合创伤是再植成功的重要因素。术后定期复查,发现问题及时处理,有利于提高再植牙远期成功率。     

42例外伤性脱位牙再植临床疗效分析

目的：探讨脱位牙再植成功的影响因素。方法：42例68个脱位牙经常规处理后原位再植，固定，并进行1年的随访观察。结果；本组42例中再植成功38例60个牙，成功率88．2％。结论：脱位时间短，离体牙保存方法得当，牙根尖孔未发育完成者，以及牙周、牙槽无损伤的病例再植成功率高。     

40颗再植牙的临床疗效分析

近年来 ,牙外伤脱位再植成功报道较多 ,本科临床治疗外伤致牙脱位多年 ,通过再植取得了满意效果 ,现就 1993～1996年本科门诊收治的 32例 (4 0颗牙 )脱位上切牙行再植术后疗效报道如下。材料和方法1 临床资料　本组 32例 ,再植牙 40颗 ;男性 14例 (2 0颗 ) ,女性 18例 (2 0颗 ) ;年龄 :8～ 39岁 (平均年龄 12 .7岁 ) ;牙脱位时间 :从 1小时以内至 33小时 ;脱位牙均为上切牙 ,且均为离体脱位 ,其中 1例伴牙槽骨骨折 (2颗 ) ,1例 39岁(其脱位时间 2小时 ) ;脱位原因主要是跌倒、碰撞所致。随访时间 1～ 3年。2 再植方法及结果判断(1)再植方法…     

48例完全脱位牙再植疗效观察

目的:观察外伤后完全脱位牙再植的临床疗效。方法:对2006年以来到我科就诊的48例52个完全脱位牙,经常规处理后再植复位固定,随访观察2~3年。结果:52个脱位牙再植后经2年以上复查,成功48个,失败4个,成功率92%,离体时间2 h内再植成功率高于2 h后(P<0.05),湿保存较干保存再植成功率高(P<0.05),离体时间越短牙周膜愈合情况越好(P<0.05)。结论:离体时间短、合适的保存介质、牙根面良好的牙周膜活性是完全脱位牙再植成功的重要因素。     

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目的探讨外伤脱位牙即刻再植的临床疗效及其影响因素。方法选择1993年10月至2005年10月于江西省萍乡市人民医院和广东工业大学医院口腔科就诊的外伤脱位牙患者46例60颗牙进行即刻再植,术后随访观察5年。结果再植牙术后5年成功率为75%,累计有11例15颗再植牙失败,失败原因主要为术后牙根吸收大于根长1/3(占60%)、继发感染(占26.7%)、固定不牢靠(占13.3%)。离体时间<30 min再植牙的牙髓成活率和牙周膜愈合率均高于离体时间>30 min的再植牙,差异有统计学意义(P<0.01)。结论即刻再植外伤脱位牙经适当的临床治疗仍可保留多年,再植成功的关键是严格选择适应证、正确选择离体牙储存介质、尽快植入缩短牙离体时间、尽可能保存牙周膜活性、牢靠的固定结合功能运动和及时有效防治感染。     

外伤性完全脱位牙即刻再植的临床分析

目的：探讨影响外伤性完全脱位牙即刻再植成功率的因素,观察光固化复合树脂夹板固定脱位牙的临床效果。方法：将外伤性完全脱位的急诊25例30颗牙齿以生理盐水清洗、抗生素浸泡后植入原牙槽窝,用光固化复合树脂夹板将脱位牙与邻牙固定,术后1、3、6、12月复诊行X线检查及牙髓活力测试,判定牙再植是否成功。结果：脱位牙再植成功20颗,成功率为66.7%,失败10颗,失败率33.3%。结论：年轻恒牙特别是离体时间在2h以内的再植成功率高;正确保存脱位牙,处理和贮存过程正确得当的成功率高;光固化复合树脂夹板固定简便易行,美观,易清洁,口腔卫生好,是一种有效的固定方法。     

45颗前牙外伤脱位再植的临床研究

目的探讨影响牙再植术成功的相关因素。方法45颗因外伤致完全脱位的离体前牙,重新植入原牙槽窝内,复位固定,随访观察,并对其临床效果及影响因素进行分析。结果经2～3年随访观察,45颗再植牙,成活40颗,其中牙周膜愈合12颗,牙髓存活4颗。结论外伤离体牙体外贮存时间和介质;患者的年龄及牙根发育阶段;受植区的损伤情况;选择适当的根管治疗时机;选择良好的固定方法;适当的调,避免咬合创伤;积极预防感染等是影响牙再植术成功的重要因素。     

外伤脱位前牙即刻再植后同期正畸移动的临床分析

目的:观察前牙外伤脱位后即刻再植同期进行正畸移动关闭牙间隙的效果.方法:对9例患者的11颗外伤脱落牙即刻再植,同期正畸治疗关闭牙间隙.详细记录每例脱位牙离体时间、处理方法及正畸移动情况.定期对患牙进行X线牙片和牙髓活力测试.随访11.5 ～26个月.结果:11颗脱位牙即刻再植后均能进行正畸移动,并顺利关闭牙间隙.但其中9颗牙髓坏死,2颗牙为活髓;5颗有不同程度的牙根吸收,牙槽骨无显著吸收和降低.结论:外伤脱位牙即刻再植后正畸移动是可行的,但其长期临床意义尚需观察.     

离体再植年轻恒牙根尖诱导临床观察

选择20 例离体再植年轻恒牙,用Vitapex糊剂进行根尖诱导.其中外伤脱位牙18 例,离体时间0.5 h～5 d;手术离体牙2 例,即刻复位.16 例治疗成功,4 例失败,成功率80%.18 例外伤脱位再植牙中治疗成功15 例(83.3%),2 例手术再植牙中治疗成功1例(50%).根尖发育完成所需时间为3～18 个...     

前牙外伤性脱位再植治疗效果分析

目的 总结前牙外伤性脱位再植治疗效果。方法 对46例共53颗外伤脱位牙进行再植术，术后追踪观察3。5年。结果 脱位牙再植5年成功率88．68％；其中8～12岁组成功率91．11％，且15．56％牙髓活力正常；脱位时间小于2h的牙齿全部生长良好；再植失败牙均在2年内出现松动脱落。结论 牙再植术是脱位牙有效的治疗方法。年龄小的患者和脱位时间短的牙齿成功率较高。脱位时间较长的牙齿也有成功的病例，临床应尽可能给予再植。     

45例57颗乳牙外伤性侧方移位的短期预后观察

目的:研究乳牙外伤侧方移位后随访6个月的临床转归.方法 :收集2018 年3月-2019年3 月间就诊于上海交通大学医学院附属第九人民医院儿童口腔科、诊断为乳牙侧方移位、治疗方法为观察随访的患儿,经筛选后选取45 例、57颗患牙的临床资料进行回顾,分析患牙复位情况、牙髓转归,采用SPSS 23.0软件包对数据进行统计学...     

Use of a removable splint in the treatment of subluxated, luxated and root fractured anterior permanent teeth in children

Aim: The aim of this study was to evaluate the prognosis of subluxated, luxated and root fractured teeth in children treated by removable splints, designed to stabilize mobile anterior teeth and eliminate occlusal trauma due to malocclusion. Material and methods: A total of 227 traumatized anterior teeth (91 subluxated, 105 luxated and 31 root fractured teeth) treated with a removable splint were observed for 3 years. The traumatized teeth were from 79 children aged between 6–12 years (mean 8 years 5 months). If a traumatized tooth was extremely mobile, a fixed splint was first made before the impression was taken for the removable splint. Two weeks after completion of the removable splint treatment, an impression was taken again to evaluate the occlusal relationship of pre‐ versus post‐treatment of removable splint. Results: The treatment period with a removable splint averaged 3 weeks in subluxated teeth, 3–5 weeks in luxated teeth, 4–6 weeks in apical third root fracture injuries, and more than 5 weeks in middle third root fracture injuries. All the subluxated teeth and 74.1% of the luxated teeth maintained their pulp vitality during the 3‐year follow‐up period. Two of 21 (9.5%) apical third root fracture teeth and three of five (60%) middle third root fracture teeth had pulp necrosis in the coronal fragments. Internal resorption was not found in any of the traumatized teeth. External replacement resorption was not found in subluxated and luxated teeth. All the root fractured teeth displayed transient external resorption around the fracture lines. The surface resorption appeared to be self‐limiting and not to threaten the retention of the tooth. Inflammatory resorption was observed in teeth with pulp necrosis, but in all cases this was reversed with endodontic treatment. Eight of 23 (39%) apical third root fractured teeth displayed replacement resorption in their apical fragments, but the resorption was not serious enough to extract the tooth. No obvious alteration in the occlusal relationship was found comparing pre‐ and post‐treatment casts. The removable splints appeared to positively affect healing after traumatic injuries, as evidenced by the low number of complications at the 3‐year follow‐up period.     

Pulp and periodontal healing of laterally luxated permanent teeth: results after 4 years

Abstract – Aim: To evaluate the pulp and periodontal healing of laterally luxated permanent teeth. Material and methods: Patients presenting with lateral luxation of permanent teeth during 2001–2002 were enrolled in this clinical study. Laterally luxated teeth were repositioned and splinted with a TTS/composite resin splint for 4 weeks. Immediate (prophylactic) root‐canal treatment was performed in severely luxated teeth with radiographically closed apices. All patients received tetracycline for 10 days. Re‐examinations were performed after 1, 2, 3, 6, 12 and 48 months. Results: All 47 laterally luxated permanent teeth that could be followed over the entire study period survived. In 10 teeth (21.3%), a prophylactic root‐canal treatment was performed within 2 weeks following injury. The remaining 37 teeth showed the following characteristics at the 4‐year re‐examination: 19 teeth (51.4%) had pulp survival (no clinical or radiographic signs or symptoms), nine teeth (24.3%) presented with pulp canal calcification, and pulp necrosis was seen in another nine teeth (24.3%), within the first year after trauma. None of the teeth with a radiographically open apex at the time of lateral luxation showed complications. External root resorption was only seen in one tooth. Conclusions: Laterally luxated permanent teeth with incomplete root formation have a good prognosis, with all teeth surviving in this study. The most frequent complication was pulp necrosis that was only seen in teeth with closed apices.     

Effect of luxation injuries on permanent teeth

Abstract Trauma to the supporting tissues of the teeth are among the most common dental injuries, leading to such complications as pulp canal obliteration, necrosis and root resorption. The aim of this investigation was to study the outcome for young permanent teeth subjected to luxation injuries. From 108 dental records 171 teeth with injuries to the supporting tissue were selected. The material comprised 130 subluxated, 15 extruded, 9 intruded, 15 exarticulated and 6 laterally luxated teeth in children aged 6–19 years. Apart from luxation, 59 teeth (35%) had additional crown and root fractures. 65% of the teeth recovered without complications. 78% of the subluxated teeth and 24% of the luxated teeth showed uneventful posttraumatic healing. Concomitant uncomplicated crown fractures or root fractures without displacement of the coronal fragment did not interfere with the healing. Of 60 teeth with healing complications, 52 (87%) were subsequently recorded as healed, the remaining 8 were extracted or had progressive root resorption. Loss of pulp vitality and external root resorptions were the most often recorded complications (28% and 17% of the total material respectively). Pulp canal obliteration was noted in 3% of the cases. Extent of injury and degree of tooth maturity were found to be related to healing compliations.     

Effect of luxation injuries on permanent teeth.

Trauma to the supporting tissues of the teeth are among the most common dental injuries, leading to such complications as pulp canal obliteration, necrosis and root resorption. The aim of this investigation was to study the outcome for young permanent teeth subjected to luxation injuries. From 108 dental records 171 teeth with injuries to the supporting tissue were selected. The material comprised 130 subluxated, 15 extruded, 9 intruded, 15 exarticulated and 6 laterally luxated teeth in children aged 6-19 years. Apart from luxation, 59 teeth (35%) had additional crown and root fractures. 65% of the teeth recovered without complications. 78% of the subluxated teeth and 24% of the luxated teeth showed uneventful posttraumatic healing. Concomitant uncomplicated crown fractures or root fractures without displacement of the coronal fragment did not interfere with the healing. Of 60 teeth with healing complications, 52 (87%) were subsequently recorded as healed, the remaining 8 were extracted or had progressive root resorption. Loss of pulp vitality and external root resorptions were the most often recorded complications (28% and 17% of the total material respectively). Pulp canal obliteration was noted in 3% of the cases. Extent of injury and degree of tooth maturity were found to be related to healing complications.     

外科导萌和正畸联合矫治上颌埋伏弯曲牙的疗效评价

目的:通过对无萌出能力的上颌埋伏弯曲牙的临床治疗分析,探讨弯曲牙正畸牵引治疗的效果。方法:对24例26颗无萌出能力的上颌埋伏弯曲牙进行摄片定位,拓展间隙后行外科开窗术 正畸牵引治疗。结果:24例埋伏牙中,成功17颗,占65.4%;效果一般6颗,占23.1%;失败3颗,占11.5%;24例埋伏牙平均破龈时间为7.5个月,最长13个月,最短3个月;26颗埋伏牙牙髓活力测验全部正常,未见根吸收、黏连。3颗唇侧出现2～4mm的牙龈退缩;2颗分别出现1.0mm和2.5mm的边缘骨丧失;1颗未能完全进入相应牙位,需以后配合光固化或烤瓷再度修复。3例不能进入相应的牙位,其中2例被迫拔除,其余均牵引入列。结论:选择良好的适应证、准确的定位、足够的间隙、适当的牵引力、支抗和有效控制炎症,循序渐进是治疗埋伏弯曲牙成功的关键。     

Dyract光固化复合体在固定外伤脱位牙中的应用

目的：探讨Dyract光固化复合体在固定外伤脱位牙中的临床应用效果。方法：收集外伤脱位牙患者65例。其中采用金属丝牙弓夹板固定35例,Dyract固定30例,并对这两种固定方法的疗效进行比较分析。结果：采用Dyract固定方法的30例中,效果良好的18例,较好的7例,效果差的5例,与金属丝牙弓夹板固定方法的疗效比较有显著性差异（P＜0．05）。结论Dyract固定外伤脱位牙是可行的,其操作简便,在疗效和美观上达到满意效果。     

年轻恒牙脱出性损伤后牙髓预后及相关因素分析

目的 评估年轻恒牙脱出性损伤后牙髓组织的预后,分析可能影响预后的相关因素.方法 对2000年1月至2006年12月于北京大学口腔医学院·口腔医院儿童口腔科就诊且资料完整、观察期≥6个月的157例(238颗牙)年轻恒牙外伤病历进行回顾性研究,记录患者性别及年龄、外伤类型、外伤牙位、牙根发育情况、外伤后就诊时间、是否接受急诊处理以及牙髓组织预后类型.应用Logistic回归模型分析与牙髓预后相关的因素.结果 符合纳入标准的外伤病历共157份,外伤牙238颗,其中38颗(16.0%)出现牙髓坏死,5颗(2.1%)出现髓腔钙化,牙髓存活195颗(81.9%).挫入移位牙髓坏死发生率最高(66.7%).牙根发育情况和外伤类型与牙髓组织预后具有显著相关性(P<0.05).结论 牙齿脱出性损伤中,挫人移位最易发生牙髓坏死.牙根发育情况和外伤类型与脱出性损伤牙齿的牙髓预后具有相关性.     

Superbond粘结系统对外伤前牙的临床疗效观察

目的：了解Superbond粘结系统对前牙外伤固定的疗效及与牙周健康的关系。方法：将38例患者随机分为牙弓夹板治疗组和Superbond粘结剂治疗组，对患者治疗前后的牙周情况和患者对治疗的舒适性、美观性、疼痛以及牙龈出血等的出现情况进行比较。结果：牙弓夹板治疗组的龈沟出血指数(SBI)、牙龈指数(GI)均值和治疗后患者的适合性、美观性均较Superbond粘结剂治疗组差，有统计学差异；但两组间牙周袋深度(PD)未见显著性差异。结论：Superbond粘结系统是一种具有良好应用前景的松动牙固定材料。