摘要：OBJECTIVE: To evaluate the effect of fixed orthodontic treatment with wire-ligated conventional brackets on oral malodor and periodontal status. MATERIALS AND METHOD: Thirty-five patients, aged 12-18 years, in permanent dentition, and requiring fixed orthodontic treatment participated in this study. The subjects treated with conventional bracket (CB; Group1, n=20) and untreated control group (Group 2, n=15) were evaluated. Oral malodor, plaque index, gingival index, pocket depth, bleeding on probing, tongue coating scores were recorded in each group. Measurements were taken from the treatment group just before bonding (T1), 1 week after maxillary and mandibular bonding (T2) and 4 weeks after bonding (T3). Measurements for the control group were done in the same periods. Volatile sulphur compounds which determine malodor were measured with Halimeter. RESULTS: One week after bonding, compared with the control group, the plaque index, pocket depth and bleeding on probing increased significantly in the CB group, (T2-T1; p<0.05). No significant change was found in the gingival index and tongue coating scores for all groups. One month after bonding, compared with the control group, the plaque index, pocket depth and gingival index increased significantly in the CB group (T3-T1; p<0.05). Regarding oral malodor, a non-significant increase was found during the observation period in the control group. In the CB group, a non-significant increase after 1 week and a nonsignificant decrease after 4 weeks was detected. CONCLUSION: CB with wire ligation had no significant effect on oral malodor in one month period. In the CB group, the plaque index and tongue coating index scores increased significantly compared with the control group.
