Clinical comparison of localized gingival recession coverage in root surfaces restored with Giomer and intact root surfaces, randomized clinical trial

Abstract

Previous studies have shown that giomers are an appropriate material for restoring root surface caries from clinical performance and biocompatibility with gingival fibroblasts point of view. The purpose of this randomized controlled clinical trial was clinical comparison of the localized gingival recession coverage in root surfaces restored with giomer and intact root surfaces. Material and methods: Thirty gingival recessions, Miller I or II, at buccal/facial surfaces of incisors, canines and premolars in maxilla or mandible with 15 root caries were treated. Root caries in test group were first restored with Giomer prior to surgery and then all 30 gingival recessions were treated with coronally advanced flap plus connective tissue graft (CAF+CTG) technique. The assessed clinical parameters which were included pocket depth(PD), recession height (RH), recession width (RW), clinical attachment level (CAL), keratinized tissue height (KTH) were measured at baseline, 1, 3, and 6 months postoperatively by an examiner who was blind to study. After calculating the mean SD, Friedman, Repeated measures ANOVA, Wilcoxon-signed ranks and Paired t-test were used for intragroup analyses. Intergroup analyses were done with Mann-Whitney U test and Independent t-test. Results: All the patients completed the study. There were no significance differences in any time between two groups regarding the clinical parameters except for recession width reduction (RWR) which was greater for control group. After 6 months, the mean root coverage for test and control group was 81.08 19.82% and 73.31 23.85%, respectively. Conclusion: In the present study, all treatments showed root coverage improvement without damage to periodontal tissues, supporting the use of CAF+CTG for treatment of root surfaces restored with giomer as being effective over a 6-month period.