牙折的病因及治疗方法课件.ppt
- 【下载声明】
1. 本站全部试题类文档,若标题没写含答案,则无答案;标题注明含答案的文档,主观题也可能无答案。请谨慎下单,一旦售出,不予退换。
2. 本站全部PPT文档均不含视频和音频,PPT中出现的音频或视频标识(或文字)仅表示流程,实际无音频或视频文件。请谨慎下单,一旦售出,不予退换。
3. 本页资料《牙折的病因及治疗方法课件.ppt》由用户(三亚风情)主动上传,其收益全归该用户。163文库仅提供信息存储空间,仅对该用户上传内容的表现方式做保护处理,对上传内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知163文库(点击联系客服),我们立即给予删除!
4. 请根据预览情况,自愿下载本文。本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
5. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007及以上版本和PDF阅读器,压缩文件请下载最新的WinRAR软件解压。
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 病因 治疗 方法 课件
- 资源描述:
-
1、外力直接撞击外力直接撞击,咀嚼咬到沙石、咀嚼咬到沙石、碎骨等硬物。碎骨等硬物。be impacted by force,biting be impacted by force,biting hard food.hard food.EtiologyEtiologyClinic characteristicsClinic characteristics按部位分:冠折 Crown fracture根折Root fracture冠根联合折 Crown-root fracture按损伤和牙髓关系分:露髓不露髓crown fracture前牙前牙:横折、斜折横折、斜折Anterior tooth:hori
2、zontal or inclined后牙后牙:斜折、纵折斜折、纵折Posterior teeth:inclined or verticalroot fracture颈颈 1/3、根中、根中 1/3、根尖、根尖 1/3cervix-thirds,middle-thirds,apical-thirds根折可有牙齿松动、叩痛、龈沟根折可有牙齿松动、叩痛、龈沟出血、粘膜触痛等。出血、粘膜触痛等。有的早期无明显症状,数日后出现。有的早期无明显症状,数日后出现。无根折外伤恒牙牙髓坏死率为 3859根折牙牙髓坏死率为2024,断端间隙利于炎症引流。X片是诊断根折的重要依据片是诊断根折的重要依据Diagnos
3、is can be carried out by radiographic examinationcrown-root fracture以斜行多见,以斜行多见,牙髓常暴露。牙髓常暴露。The fracture will often be inclined with pulp exposure缺损少牙本质未暴露,磨光锐边。缺损少牙本质未暴露,磨光锐边。crown fractureWithout dentin exposure,selective grinding of the incisal edge is sufficient.牙本质暴露敏感者,盖髓树脂修复。牙本质暴露敏感者,盖髓树脂修复。C
4、over with Ca(OH)2 and composite resin restoration if dentin is expose and sensitive牙髓暴露,牙根发育完成者行活髓摘除术,牙根发育未完成者行活髓切断术。In case of a pulp exposure,pulpectomy is indicated if the root apical is developed,pulpotomy is sufficient if the root apical is developing.root fracture根中1/3折,根尖1/3折middle-thirds,api
5、cal-thirds用夹板固定三个月,如牙冠端有错位,在固定前应复位。Reposition the coronal fragment and use splinting for 3 months在治疗后1、3、6、12个月定期复查牙髓的活力状况,一旦发现牙髓有炎症或坏死趋势,则应作根管治疗术。Check for pulpal complications after 1 month,3 months,6 months and 12 months.If pulp necrosis occurs,root canal therapy should be done.颈颈1/3折断:均先行根管治疗折断:
6、均先行根管治疗断端在龈上,根管治疗后桩核冠修复断端在龈上,根管治疗后桩核冠修复Cervix-thirds fracture:root canal therapy should be doneIf fracture surface above gingival level,a post-retained full crown is fabricated after RCT.断端在龈下牙槽骨上,龈切暴断端在龈下牙槽骨上,龈切暴露断面桩核冠修复。露断面桩核冠修复。Fracture surface between gingival and alveolar:a post-retained crown
7、is fabricated after gingivectomy expose the fracture surface.断端在牙槽骨下断端在牙槽骨下44mmmm,牙根较长,可牙根较长,可手术或正畸方法牵引后,桩核冠修复。手术或正畸方法牵引后,桩核冠修复。If fracture surface is 4mm below the alveolar and the root length is enough,surgical or orthodontic extrusion of the root,to move the fracture surface to amore optimal loca
8、tion for final restoration树脂夹板固定树脂夹板固定Composite resin splint根折的转归钙化性愈合结缔组织性愈合骨、结缔组织联合愈合断端被慢性炎症组织分开Connective tissue healingThe fragment is separated by chronic inflammation tissue Calcified healingHard-connective tissue union healingHealing of root fracturecrown-root fracture可作根管治疗,具备桩核冠修复可作根管治疗,具备桩
9、核冠修复的冠根联合折,应保留。的冠根联合折,应保留。The tooth with crown-root fracture which can be restored by a post retained full crown should be saved to receive RCT 发生在牙根的纵裂,未波及牙冠者。Vertical root fracture,not involving the crown.慢性持续性的创伤合力牙根发育缺陷无髓牙EtiologyEtiologyChronic durative traumatic occlusal force Defect of root d
10、evelopmentPulpless tooth无髓牙Pulpless tooth内因:牙本质脱水,失去弹性,牙变 脆,致使牙抗折力降低。外因:侧方加压充填根管桩或桩核修复其他X线检查对诊断牙根纵裂有重要意义Diagnosis can be carried out by radiographic examinationClinic characteristics 松动明显,牙周破坏严重或单根牙的牙根纵裂,均应拔除。The tooth should be extracted if it is very loose or of severe periodontal lesion or vertic
11、al root fracture in single rooted tooth.牙周病损局限且牙稳固的磨牙,可在根管治疗后行牙半切术或截根术。Tooth hemiresection or root resection is performed after RCT if the molar is steady and of limited periodontal lesion.牙半切术tooth hemiresection截根术root resection慢性损伤慢性损伤磨损磨损楔状缺损楔状缺损磨牙症磨牙症牙隐裂牙隐裂酸蚀症酸蚀症楔状缺损是牙齿唇、颊颈部硬组织缓慢楔状缺损是牙齿唇、颊颈部硬组织缓
12、慢磨耗所致,因该缺损常呈楔状而得名。磨耗所致,因该缺损常呈楔状而得名。Wedge-shaped defect is caused by tardy abrasion of buccal cervix hard tissues.刷牙不当刷牙不当牙颈部结构牙颈部结构Structure of tooth cervixImproper teeth brushingEtiologyEtiology酸作用酸作用牙体组织疲劳牙体组织疲劳Acid erosionWeariness of hard tissues由由23个平面组成,坚硬光滑,为牙本色。个平面组成,坚硬光滑,为牙本色。Usually have 2
展开阅读全文