Examinations of bracket and archwire types on treatment duration of anterior irregularity

Objective: Self-ligating brackets used in orthodontic treatments have produced different types of brackets together with the latest technological developments. The aim of our study is to examine the effects of Speed bracket and Supercable on the level of mandibular and maxillary incisor teeth compared with conventional brackets and archwires. Method: Our study was conducted on 65 subjects with skeletal and dental Class I mild or moderate anterior crowding. Patients were evaluated in four groups, the first group consisted of 16 patients (8 girls, 8 males), Speed System bracket and Supercable archwire, second group 15 patients (11 girls, 4 boys) Speed System bracket and NiTi archwire, third group 15 patients (13 girls, 2 males) Obey I bracket and Supercable archwire, fourth group 19 patients (15 girls, 4 males) Obey I bracket and Niti archwire. Pre-treatment and treatment values of the patients were taken digitally by intraoral scanning.Supercable and NiTi archwires were applied for the first two months at 0.016" and then for two months at 0.018". After the four-month treatment period, groups were assessed for the effects of mandibular and maxillary anterior crowding according to the Little Index, distance between molars and canines, and the length of the arches were calculated. Results: Significant increases in the intercanine, intermolar, arch-sized distances and inclinations values on lateral cephalometric evaluation were found to be statistically significant in all groups (p <0,001). There was a statistically significant decrease in irregularity index in the conventional bracket and archwire groups compared to the other groups (p <0.001). Conclusion: Speed system brackets and Supercable arc-treated groups were found to be less effective when compared to conventional groups. Key words: orthodontic archwires, mandibular anterior de-crowding, supercable, superelastic niti