Diwakar, B (2016) A Prospective Randomized Clinical Trial to Assess the Efficiency of Passive Self-Ligating Bracket Vs Conventional Bracket System. Masters thesis, Ragas Dental College and Hospital, Chennai.
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Abstract
AIM OF THE STUDY: The aim of the study was to compare the efficiency between passive self ligation system and a conventional bracket system with respect to alignment efficiency, torque expression and arch width changes. The inclusion criteria included patients between 13 to 25 years old and they were of either gender who had all their permanent teeth with the Angles Class I, Class II Division 1 and Bi-dentoalveolar malocclusion and patients with moderate Little’s irregularity index score for dental crowding. Sample consisted of 12 patients, who were randomly divided into two groups, Group A as study group who had passive self-ligating brackets 3M Gemini SL (MBT 0.022 Slot), and Group B as control group with six patients each who had conventional Mini Master series AO (MBT 0.022 Slot). Impressions were made for each wire insertion that is TO, T1 and T2 for 0.016, 0.018 and 19 x 25 NiTi and models were made and measured to evaluate arch dimensional changes. Lateral cephalograms were taken at initial and completion of alignment. Little’s irregularity index was used to quantify the alignment of the six anterior teeth. Statistically the results were tabulated by Mann Whitney U test, Wilcoxan paired T test, Paired and Independent sample T test to find the significant differences between study and control group. The Comparison of Irregularity Index between the study group and control group showed that there was no statistically significant difference in maxilla and mandible. Comparison of torque expression between control and study group, was not statistically significant. The comparison of arch expansion between study group and control group at the level of canine, premolar and molar were also statistically insignificant. CONCLUSION: It was found that Passive self-ligating bracket system are not more superior to conventional bracket system, in terms of alignment efficiency, torque expression and arch expansion.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Passive SL, Alignment efficiency, Arch expansion, Torque Expression. |
| Subjects: | DENTAL > Orthodontics and Dentofacial Orthopedics |
| Depositing User: | Subramani R |
| Date Deposited: | 28 Sep 2021 15:31 |
| Last Modified: | 28 Sep 2021 15:31 |
| URI: | http://repository-tnmgrmu.ac.in/id/eprint/18144 |
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