中国组织工程研究2012，Vol.16Issue(3)：511-514,4.DOI:10.3969/j.issn.1673-8225.2012.03.029
新型带环固位性能:3个方向抗剪切强度及其玻璃离子的黏结
Retention performance of new type molar bands: Shear bond strengths and bonding of glass ionomer in three directions
摘要
Abstract
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 long- term 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
玻璃离子水门汀/磨牙带环/树脂加强型玻璃离子水门汀/抗剪切强度/口腔生物材料分类
医药卫生引用本文复制引用
付巍,周珊,丁元凤,王培军,徐实谦..新型带环固位性能:3个方向抗剪切强度及其玻璃离子的黏结[J].中国组织工程研究,2012,16(3):511-514,4.基金项目
该课题获得了黑龙江省教育厅基金项目,课题名称:新式三面带环三维有限元分析及其实验研究.该课题获得了黑龙江省卫生厅基金项目,课题名称:新研制带环及其物理性能的三维有限元分析. （）
