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Dental caries in the child 乳牙龋病

Dental caries in the child 乳牙龋病. Characteristic of dental caries in the child 乳牙龋病的特点. 患龋率高，发病早 龋齿多发，龋坏范围广 龋蚀发展速度快 自觉症状不明显 修复性牙本质的形成活跃. 自洁. 形态结构特点. 龋. 饮食结构. Risk factor 乳牙易患龋的因素. Harm. 局部影响： chewing function permanent teeth mucous membrane of mouth and soft tissues

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Dental caries in the child 乳牙龋病

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  1. Dental caries in the child 乳牙龋病

  2. Characteristic of dental caries in the child 乳牙龋病的特点 患龋率高，发病早 龋齿多发，龋坏范围广 龋蚀发展速度快 自觉症状不明显 修复性牙本质的形成活跃

  3. 自洁 形态结构特点 龋 饮食结构 Risk factor 乳牙易患龋的因素

  4. Harm 局部影响： • chewing function • permanent teeth • mucous membrane of mouth and soft tissues 全身影响： • nutrition intake • focal infection • Phonation • beauty • psyche

  5. 奶瓶龋 milk bottle caries nursing bottle caries bottle feeding caries BBTD Baby bottle tooth decay ECC Early childhood careis

  6. 环状龋 circular caries

  7. 猖獗性龋 rampant caries “Suddenly appearing,widespread,rapidly burrowing type of caries,resulting in early involvement of the pulp and affecting those teeth usually regarded as immune to ordinary decay,such as the mandibular anteriors”-----Massler

  8. Therapy治疗 • Stop and protect终止龋蚀进展，保护牙髓活力 • Avoid 避免并发症 • Restore 恢复外形和功能

  9. Medication药物治疗 Indication 适应证： 广泛浅龋，环状龋，不易制备洞形者 Commonly used drug 常用药物 ： Ammonia silver nitrate 　氨硝酸银 Fluoride　　　　　　　氟化物类

  10. Mechanism ： • 堵塞牙本质小管 • 抑制细菌生长繁殖 • 增加抗酸性 机理

  11. procedure操作步骤 • 修整外形 • 清洁干燥牙面、隔湿 • 涂药

  12. 注意事项： • 硝酸银可以引起牙齿变色 • 不能恢复牙体外形，仅能控 　制龋蚀进展 • 向家长讲明情况 • 对特别不合作的儿童可采用　氟化物类的药物 • 硝酸银具有腐蚀性，刺激性 • 定期复查

  13. Restoration 充填治疗

  14. 治疗特点： • 钻针切削会使釉面龟裂多发，走向复杂 • 硬组织薄，易切削，易发生意外露髓 • 洞形制备要求不如恒牙严格 • 牙髓组织对切削反应敏感，且出现变化早，容易出现充填后疼痛 • 生理间隙特点决定不必勉强恢复接触点 • 牙颈部收缩明显，且牙龈乳头位置高，易出血 • 临床牙冠短，使用成形夹困难，避免形成悬突

  15. Class Ⅰ cavity

  16. Class Ⅱ cavity

  17. Class Ⅲ cavity Class Ⅳ cavity Class Ⅴ cavity

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