[Evaluation of periodontal clinical index after class V restorations using miniflap surgery technique]

Dental caries had been known historically as the most common infectious disease. Miniflap is one of the techniques used for better access to class V caries. The aim of this study was making a comparison between periodontal index after class V restorations of composite resin and glassionomer by miniflap. This clinical trial study was carried out on 30 premolar teeth in patients who referred to Babol dentistry faculty with class V caries, which their gingival margin was 1mm apical to the free gingiva, in maximum. Two incisions in mesial and distal of the tooth at the level of attached gingiva and thereafter conventional class V cavity preparation were performed. Then teeth were devided in to two groups. The first group was restored by glass ionomer [Fuji II Lc] and second group by heliomolar resin composite. Patients were followed up in, 1, 3 and 6 month after restoration concerning gingival index, Bleeding index, plaque index, probing pocket depth index and clinical attachment level and the findings were analyzed by Student's t-test. Comparing the mean of periodontal indexes before and after restoration by glass ionomer showed that only Bleeding index was changed significantly 6 months after restoration. The mean of periodontal indexes including CAL and PPD changed significantly before and after restoration by composite in 1, 3 and 6 months follow up. For a better comparison of indexes between two groups Delta [the change rate of different indexes] in 1, 3 and 6 months after restoration was assessed and showed that this difference was significant in CAL and PPD index between intervals, except for the restoration time after six months. Periodontal indexes in gingiva adjacent to cavity restored by glass ionomer indicated better gingival adaptation for this material compared to composite