不同剂型排龈材料对牙龈组织损伤程度的比较  

Comparison of damage degree of gingival retraction materials with different dosage forms on the gingival tissues

作　　者：杨春江[1] 刘璇[2] 吴文慧[3] 

机构地区：[1]唐山市口腔医院正畸科,河北省唐山市063000 [2]保定市第二医院口腔科,河北省保定市071051 [3]河北联合大学口腔医学院,河北省唐山市063000

出　　处：《中国组织工程研究与临床康复》2012年第3期507-510,共4页Journal of Clinical Rehabilitative Tissue Engineering Research

摘　　要：背景:排龈有利于印模准确记录预备体边缘的位置和形态,从而提高固定修复体牙龈边缘的适合性,以确保修复体的成功和长期稳定性。目的:观察应用排龈线和排龈膏后大鼠牙龈组织的损伤程度。方法:实验纳入65只Wistar大鼠,分别应用排龈线或排龈膏对大鼠进行排龈处理,以不进行排龈处理的大鼠作为对照。分别在排龈后30min,1,2,4,7,12d采集大鼠牙龈组织进行观察。结果与结论:病理学观察发现,排龈线与排龈膏均导致牙龈组织损伤,并产生炎症反应。排龈线组牙龈炎症反应较排龈膏组重,但排龈12d后两组牙龈均恢复正常的组织学形态。说明两种排龈剂型都是安全可靠的,但排龈膏对牙龈组织的损伤程度要轻于排龈线,生物学效应更佳。BACKGROUND：Gingival retraction contributes to the accurate records of the position and morphology of the tooth prepare edge,thereby enhance the suitability of the gingival margin in the fixed restoration,to ensure the success and longterm stability of the restoration.OBJECTIVE：To observe the damage degree of gingival tissues in rats treated with gingival retraction cord and gingival retraction paste gum.METHODS：A total of 65 Wistar rats were involved in this experiment.Experimental rats were treated with gingival retraction cord and gingival retraction paste gum;control rats did not receive gingival retraction treatment.Rat gingival tissues were collected at 30 minutes,1,2,4,7 and 12 days after gingival retraction for observation.RESULTS AND CONCLUSION：Pathology observation showed that both gingival retraction cord and gingival retraction paste gum can lead to gingival tissue damage and inflammatory reaction.The inflammatory reaction in the gingival retraction cord group was severe than that in the gingival retraction paste gum group;however,the histology manifestation of gingival tissues in both groups returned to normal on 12 day after gingival retraction.These findings indicate that the two dosage forms of gingival retraction materials are safe and reliable;but the damage of the gingival tissues caused by gingival retraction paste gum is lighter than that caused by gingival retraction cord,therefore the gingival retraction paste gum has better biological effects.

关 键 词：排龈 排龈线 排龈膏 病理学 损伤 

分 类 号：R318[医药卫生—生物医学工程]