Management of mandibular incisor crowding with clear aligners and nickel titanium wires: A comparative study

Abstract

Background: Esthetic orthodontic appliances such as esthetic labial appliances like plastic brackets, ceramic brackets, esthetic coated arch wires, lingual appliances and clear aligners are very popular among patients which are outcome of new advances in orthodontics. The present study compared treatment of mandibular incisor crowding with clear aligners and nickel titanim wires. Materials and Methods: 40 patients with mandibular incisal crowding was selected. Two groups were formed of both gender. First group (Group I) patients were treated with nickel- titanium arch wires and second group (group II) patients with clear aligners. Crowding was assessed using little’s irregularity index. The linear horizontal displacement of the anatomic contact points of mandibular anterior teeth is measured and added which denotes total irregularity score. Patients were recalled regularly at 4 weeks, 8 weeks and 12 weeks. Results: At baseline, mean score in first group was 2.94 mm and in second was 2.70 mm, at 4 weeks in first group was 1.68 mm and in second group was 1.50 mm, at 8 weeks in first group was 0.94 mm and in second group was 1.4 mm and at 12 weeks in first group was 0.64 mm and in second group was 0.56 mm. The difference was non- significant (p>0.05). The mean change in little’s irregularity index score at 4 weeks in first group was 1.28 mm and in second group was 1.21 mm, at 8 weeks was 0.75 mm in first group and 0.46 mm in second group and at 12 weeks was 0.37 mm in first group and 0.74 mm in second group. The difference was significant (p