3种正畸粘接剂抗唾液污染的剪切强度比较  

Comparison on Shear Bond Strength of Edgewise Brackets Bonding with Three Orthodontic Adhesives Against Salivary Contamination

作　　者：房伯君[1] 翟俊辉[1] 杨亚囡[1] 

机构地区：[1]中国医科大学第二医院口腔科,沈阳110004

出　　处：《上海口腔医学》2003年第6期453-455,共3页Shanghai Journal of Stomatology

摘　　要：目的研究3种粘接剂在唾液污染湿润、干燥条件下粘接正畸托槽后的剪切强度,以及托槽去除后牙面残留粘接剂指数(ARI)。方法60颗人类离体前磨牙随机等量分为3组。选用京津釉质粘合剂、单组分粘接剂、超强粘接剂,在唾液污染湿润和干燥条件下粘接正畸托槽后,测定并记录抗剪切强度和残留粘接剂指数。结果前两种粘接剂在唾液污染湿润条件下,粘接托槽的抗剪切强度明显下降,不能满足治疗要求(6～8MPa),但在唾液污染干燥情况下,粘接托槽则能满足正畸治疗要求;超强粘接剂在2种情况下均能满足正畸治疗要求。结论超强粘接剂在唾液污染湿润和干燥情况下均可使用;而京津釉质粘合剂、单组分粘接剂只能在唾液污染干燥情况下使用。Objective To compare the shear bond strength and ARI score of Edgewise brackets bonding with three adhesives under moist and dry conditions after salivary contamination.Methods Sixty extracted human premolars were randomly and equally divided into3groups.Edgewise brackets were bonded directly with composite resin,super bond C&B and single component adhesive under moist and dry conditions after salivary contamination.The shear bond strength and ARI score were measured and recorded.Results The shear bond strength of Edgewise brackets bonding with composite resin and single component adhesive under moist condition after salivary contamination decreased significantly and it can't meet the requirement of orthodontic therapy(6-8MPa)while that under dry condition can.Super bond C&B can meet the requirement of orthodontic therapy on both conditions.Conclusion Super bond C&B can be used under both moist and dry conditions after salivary contamination.Composite resin and single component adhesive can only be used under dry condition after salivary contamination.

关 键 词：粘接剂 托槽 唾液 剪切强度 口腔正畸 

分 类 号：R783.1[医药卫生—口腔医学]