牙齿增白涂膜漂白氟牙症效果的离体牙实验研究  

The effect of a tooth-bleaching varnish in vitro

作　　者：曹玲 郑义 张和平 

机构地区：[1]第四军医大学口腔医院正畸科,710032 [2]武汉军事经济学院门诊部 [3]第四军医大学口腔医院特诊科,710032

出　　处：《实用口腔医学杂志》2000年第2期131-133,共3页Journal of Practical Stomatology

摘　　要：目的 :观察高效型牙齿增白涂膜对离体氟牙症的漂白效果及酸蚀剂对漂白的辅助效果。方法 :选离体的烟茶染色牙为 1组 ,又将氟牙症按其着色深浅分为轻度、中度和重度着色 3组 ,共 4组。同一牙面从中切开 ,左右随机对照 ,以牙齿增白涂膜处理实验侧 ,每天涂膜 3次 ,最多涂 2 5 d,与对照侧比较。另选 30个重度着色氟牙症从中切开 ,左右随机对照 ,实验侧在第一次涂膜前用 370 g/ L磷酸处理 1min,然后常规涂膜 ;对照侧只常规涂膜与实验侧比较。结果 :牙齿增白涂膜对烟茶染色牙的有效率为 10 0 % (治愈率为 93.3% ,显效率为 6 .7% ) ;对于氟牙症有效率虽为 90 %以上 (P>0 .0 5 ) ,但随其染色程度的加深 ,治愈率则有很大差别(P<0 .0 5 ) ,分别为 76 .7% ,30 %和 0 %。对于重度着色氟牙症 ,涂膜前进行酸蚀 ,可明显加强涂膜的漂白作用。结论 :牙齿增白涂膜是一种简便有效的牙齿漂白制剂 ,对不同原因的着色牙均有改善牙齿色泽的作用 ,但对重度着色的氟牙症涂膜 75次尚不能达到完全治愈 ,需进一步改善。Objective: To evaluate the bleaching effect of a tooth bleaching varnish with or without preoperative etching in vitro. Methods: Extracted cigarette and tea pigmented teeth were used as a group and extracted fluorosis pigmented teeth were divided into three groups according to the severity of the pigment. Every tooth was split into two parts which were randomly divided into the control and the treated. The treated part was subjected to the tooth bleaching varnish for a period of 20 to 25 days, three times a day. The differences between the two parts on each tooth were compared. Another thirty severe discolored fluorosis teeth were selected and split into two parts. Both parts were subjected to the tooth bleaching varnish. According to the random principle,37% phosphoric acid was used on the treated parts before the first use of the tooth bleaching varnish. Result: The cute rate of the varnish for cigarette and tea pigmented teeth was 93.3%; for the fluorine teeth was 76.7%, 30% and 0% according the degrees of the discoloration ( P < 0.05 ). The total effectitive rate of the varnish for fluorine teeth was 90% ( P >0.05). Preoperative etching improved the effect of the varnish in severe discolored fluorine teeth. Conclusion: The tooth bleaching varnish is proved to be an effective, simple and practical method for the treatment of discolored teeth.

关 键 词：牙漂白 过氧化脲 斑釉 氟牙症 

分 类 号：R781.2[医药卫生—口腔医学]