Comparason of the clinical efficacy of different gingival retraction methods
10.3969/j.issn.1001-3733.2018.02.012
- VernacularTitle:不同排龈方法对排龈效果影响的对比研究
- Author:
Gang OUYANG
1
;
Huan ZHOU
;
Sanjun ZHAO
Author Information
1. 710032 西安,军事口腔医学国家重点实验室,口腔疾病国家临床医学研究中心,陕西省口腔医学重点实验室,第四军医大学口腔医院修复科
- Keywords:
Gingival retraction cord;
Cordless gingival retraction;
Digital modeling
- From:
Journal of Practical Stomatology
2018;34(2):202-205
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To evaluate the effects of 4 gingival retraction methods. Methods: 48 premolars were selected from 12 periodontal healthy volunteers and were randomly divided into 4 groups(n = 12 teeth) and treated with different gingival retraction methods: Ultrapak E(group UL) and three kinds of cordless gingival retraction, including Expasy1 (group EX), Astringent Retraction Paste (group AS) and Racegel(group RA). Perfusing plaster models were prapaired after useing putty-wash impression technique. A 3D digital model was reconstructed by a 3-shape model scanner for each patient. Data were collected before and after gingival retraction and analysed by the Geomagic Studio 2013 in the mesial, middle, and distal sides of the selected teeth. Results: Effective width of gingival retraction were all obtained in the 4 groups. The most effective effects were observed in group UL, followed by group EX, group AS and group RA, among the groups, F = 1 114. 4, P＜ 0. 000 1. Conclusion: Cordless gingival retraction technic can achieve effective gingival retraction.
