摘要
目的 探讨Nd :YAG激光与氟保护漆联合应用对牙本质小管的封闭作用。方法 将 2 4个牙本质块随机分为A、B、C、D4组 ,均用 37%H3PO4 处理表面。A组作为对照。B、C、D组均涂以一薄层氟保护漆 ,然后D组标本经Nd :YAG激光照射。以正常刷牙力度同时刷C、D 2组牙本质块 10min。所有标本以扫描电镜 (scanningelectronmicroscope ,SEM)观察并照相。结果 A组显示大量牙本质小管口开放 ,管口直径约 2～ 3μm。B组显示牙本质表面被氟保护漆均匀覆盖。C组显示氟保护漆大部分被刷去。D组显示仍有超过 80 %的牙本质小管口被氟保护漆所封闭。结论 在同样的刷牙条件下 ,将Nd :YAG激光与氟保护漆联合应用 。
Objective To evaluate the combined occluding effect of fluor protector and Nd:YAG Laser irradiation on human dentinal tubules Methods Twenty four dentin specimens with exposed dentinal tubule orifices treated by 37% H 3PO 4 were randomly divided into four groups Group B, C and D were vanished by fluor protector, group A served as a control. Group D was lased by Nd:YAG laser. Group C and D were brushed with normal force Results Under SEM, group A showed numerous exposed dentinal tubule orifices, the diameter of which is 2 3 μm Group B showed closure of dentinal tubule orifices Group C showed that most of the fluor protector were brushed away and group D showed over 80% of the dentinal tubule orifices were occluded Conclusions Fluor protector combined with Nd:YAG laser can make most of the dentinal tubule orifices occluded even after brushed
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2001年第2期105-107,T002,共4页
Chinese Journal of Stomatology
