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Pediatric endodontics

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Presentation on theme: "Pediatric endodontics"— Presentation transcript:

1 Pediatric endodontics

2 Comparative anatomy between primary and permanent molars

3 Eliminate infection and pain Bone development To guide permanent tooth
Aim Eliminate infection and pain Bone development To guide permanent tooth function

4 Space manager

5 inlay

6 乳牙牙髓病和根尖周病的临床特点 pain Spontaneous or precipitated by external stimuli

7 swell

8 Mobility and tenderness on percussion

9 Pulp sensitivity test

10 Radiographic examination

11 乳牙牙髓病的分类 急性牙髓炎 慢性牙髓炎 牙髓坏死 牙髓变性

12

13 Pulp capping

14 Indirect pulp capping

15 Direct pulp capping

16 formocresol 乳牙FC断髓术

17 牙髓切断术

18 FC断髓术

19 活髓切断术

20

21 乳牙根尖周病

22 Clinical features

23 Root canal treatment of deciduour teeth

24 乳牙尖周病治疗的评价

25 年轻恒牙牙髓病和根尖周病

26 apexcification

27 简介 由于牙根发育过程中断导致根尖孔未闭合 外伤,感染 龋病,发育畸形(畸形中央尖,牙内陷)

28 定义 死髓牙 根尖孔矿化 伴或不伴牙根发育

29 目标 使根尖孔闭合 如果Hertwig’s上皮根鞘没有被彻底破坏的话有牙根发育(长度增加)

30 缺点 时间太长(3-20月),平均1年

31 材料 抗生素糊剂 防腐剂 磷酸三钙陶瓷 成骨蛋白-1 MTA 不同溶剂的氢氧化钙制剂 空管 氢氧化钙制剂是标准方法

32 步骤 工作长度照片 局麻 隔湿 开髓 清理根管 30#纸尖确定工作长度(-mm) 吸干 导入氢氧化钙 加压,照片 暂封 换药 根充

33 作用机制 机制不明(半水硫酸钙,氢氧化镁有异位成骨) 抗菌,高PH值,溶解坏死牙髓,促进骨形成 可能是一种激动剂,刺激机体的修复反应
组织学:牙本质,牙骨质,骨样组织,松散结缔组织 根尖屏障是钙化不全的基质。 组织来源:成牙本质细胞和Hertwig’s上皮根鞘

34 愈合情况 15号锉可探知,X片上不见 X片可见根尖发育完成 X片可见无根尖发育 在根尖上端形成钙化桥

35 影响愈合时间因素 根尖孔大小,<2mm 年龄,11yr 感染 复发症状 换药时间 根管清理

36 并发症 根折(颈部) 裂纹,根管壁薄 氢氧化钙超填会引起术后敏感,欠填会使得屏障上移

37 MTA

38 一次性根尖诱导

39 Case Chief complaint: A 23 year old female was referred for her right lower second premolar with an open apex

40 Clinical examination

41 Pre-operational Radiographic Examination

42 Diagnosis: Treatment plan :
35 Chronic Apical Periodontics with Open Apex Treatment plan : Apical plug with MTA Root canal was obtrurated with warm vertical condensation technique

43 MTA apical plug postoperation After 6 months

44

45

46 Fig. 1. Tooth no. 9: horizontal mid-crown fracture with small pulp exposures observed.

47 Fig. 2. Preoperative radiograph.

48 Fig. 3. Postoperative radiograph.

49 Fig. 4. Eighteen-month follow-up radiograph showing apical root development and coronal dentinal bridge formation.


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