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学习笔记(2)

  • 2026-11-07 14:35:27
学习笔记(2)

第二位老师《激光》

❗️流体力学
与超声激活荡洗相比,铒激光激活荡洗可以在根管内产生更强大的流体动力,使根管内的荡洗液流速更快
❗️医学生物学
铒激光辅助荡洗可以杀灭牙本质小管更深层的细菌。
铒激光激活次氯酸钠可以去除玷污层,使牙本质小管开口到达更高的清洁程度
❗️铒激光激活荡洗的普适性
在不同弯曲根管模型中,铒激光激活荡洗具有相同的流体力学效果
在不同锥度的根管模型中,铒激光激活荡洗具有相似的流体力学效果。具体要求为大于等于2006
❗️基于铒激光激活荡洗的微创根管治疗
铒激光激活荡洗可以为微创机械预备提供感染控制条件
❗️自动化牙髓治疗理念

第三位老师,南湘一柱《分离器械》

❗️大直径金属锉易因循环疲劳(弯曲)折断
❗️小直径金属锉易因扭转疲劳(狭窄)折断
❗️根管冠方弯曲比根尖段弯曲更易器械分离
❗️器械不应停留在弯曲根管内旋转
❗️弯曲根管主尖锉小锥度小直径
❗️临床决策
1、尝试取出
非完全化学预备影响预后,尤其有根尖病变,完成根管全工作长度预备?充填
面对心理障碍和法律诉讼
2、无需尝试取出
活髓、已预备良好
台阶、削弱(过度预备)、侧穿、根裂
3、旁路通过
根尖三分之一,弯曲下段取出风险大
渗漏实验显示充填质量良好
旁路通过者可取
❗️乳牙
所有乳牙根管内分离器械均应取出或拔除患牙
❗️临床处置
术前评估
1、患牙保留价值
2、感染根管状况、器械分离前根管预备完成情况
3、分离器械状况:位置、长度、材质等
4、牙根解剖情况:根管厚度、凹面、弯曲度等
5、患者情绪、经济状况;医生设备与经验
6、取出方法
方案沟通
1、器械分离是治疗并发症,不是医疗事故
2、经评估最佳治疗方案建议
3、建议取出或强烈要求者,取出的风险、费用等告知
4、其他问题告知:治疗中、治疗后注意事项,后续治疗等
5、签署知情同意书
操作技术
套管、超声、旁路、其他
套管/套索法示意图
❗️使用特殊工作尖去除分离器械的牙本质阻力是超声法取出分离器械的基本原理:高频非连续旋转式切割
全程使用EDTA
❗️几乎所有的分离器械在根管内的牙本质阻力都是不确定的
❗️较短的分离器械(小于等于3mm)超声一般均可直接取出,如不能直视分离器械熟读影像,预弯工作尖
❗️旁路法
旁路法流程模拟
超声法切削
❗️小结
基本 文件 流程 错误 SQL 调试
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  1. CONNECT:[ UseTime:0.000770s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001010s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000466s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000399s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000518s ]
  6. SELECT * FROM `set` [ RunTime:0.000295s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000700s ]
  8. SELECT * FROM `article` WHERE `id` = 578121 LIMIT 1 [ RunTime:0.000368s ]
  9. UPDATE `article` SET `lasttime` = 1794077229 WHERE `id` = 578121 [ RunTime:0.001667s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000318s ]
  11. SELECT * FROM `article` WHERE `id` < 578121 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000679s ]
  12. SELECT * FROM `article` WHERE `id` > 578121 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000699s ]
  13. SELECT * FROM `article` WHERE `id` < 578121 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000777s ]
  14. SELECT * FROM `article` WHERE `id` < 578121 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000876s ]
  15. SELECT * FROM `article` WHERE `id` < 578121 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000763s ]
0.089090s