华西口腔医学杂志

• 临床研究 • 上一篇    下一篇

微波对离体牙髓腔温度的影响

桂和明,杜丽娟,张建明,黄达鸿   

  1. 佛山市口腔医院 口腔内科,广东 佛山528000
  • 收稿日期:2005-06-25 修回日期:2005-06-25 出版日期:2005-06-20 发布日期:2005-06-20
  • 通讯作者: 杜丽娟, Tel: 0757-82339469
  • 作者简介:桂和明(1952-),男,安徽人,副教授,硕士

Effects of Microwave Power on Temperature Change in Dental Pulpal Chamberin vitro

GUIHe-ming,DULi-juan, ZHANG Jian-ming,HUANGDA-hong   

  1. Dept.ofOralMedicine,StomatologyHospital ofFoshan City,Foshan528000,China
  • Received:2005-06-25 Revised:2005-06-25 Online:2005-06-20 Published:2005-06-20

摘要: 目的 研究不同功率、不同作用时间的微波直接作用和通过氟化钠甘油糊剂作用于磨损程度不同的离体 牙面时髓腔内温度的变化,为临床使用微波加氟化钠治疗牙本质过敏症提供参考资料。方法 将完整的离体人 恒磨牙面制成轻、中、重度3种不同的磨损程度,用不同功率、不同作用时间的微波直接作用及通过氟化钠甘油 糊剂作用于离体牙面,测量髓腔内温度变化值。结果 微波作用时随作用时间延长、功率升高,髓腔内温度上 升,牙齿磨损程度重者温度上升幅度大。相同时间、相同功率作用于相同磨损牙面,通过75%氟化钠甘油糊剂作用 较直接作用髓腔温度上升幅度大(P<0·01)。结论 微波功率和作用时间以及牙齿磨损程度对髓腔温度均有直接 影响;临床应用时应根据牙磨损程度,谨慎选择微波能量和作用时间。

关键词: 微波, 离体牙, 髓腔温度, 氟化钠

Abstract: Objective To explore the effects of microwave powers on temperature changes of dental pulpal chamberin vitro. Methods 96 isolated teeth were prepared in three degrees of dental occlusal wear according to Smith BG′s report. Temperature change values in dental pulpal chamber were recorded by thermometer (DM6801A) while the different affect time and microwave powers acted directly and with 75% sodium fluoride glycerine paste on face of isolated teeth separately in room temperature.Re- sults The degree of temperature in dental pulpal chamberwas going up followthe raising microwave power and prolonging time. The temperature in dental pulpal chamberwith microwave acting sodium fluoride on dental occlusal was higher than acting directly dental occlusal.Conclusion The microwave power, time and degree of dental occlusalwear are very important factors on temper- ature change in dental pulpal chamber in our study.

Key words: microwave power, isolated tooth, temperature of pulpal chamber, sodium fluoride