Ilanchezhian, J (2022) Assessment of Stress Distribution on the Tooth Surface during Debonding of Various Orthodontic Brackets: Finite Element study. Masters thesis, Madha Dental College, Chennai.
Full text not available from this repository.Abstract
AIM OF THE STUDY: To assess the amount of stress distribution on tooth surface during debonding of various orthodontic brackets and correlate the stress distribution with the shear bond strength of similar orthodontic bracket. OBJECTIVES: To compare the amount of stress distribution of brackets on tooth surface during debonding of various brackets using Finite element method and correlate with shear bond values. MATERIALS AND METHODS: A three dimensional finite element analysis is used to evaluate the amount of stress applied during a shear load. High resolution CT for micro scans creating high quality model and meshing. The stress distributed-ANSYS 19.0, GEOMAGIC 3D scanning, Assembly and modelling – UNIGRAPHICS N(8). Compare both the stresses by Finite element method and universal testing machine with the shear bond strength of similar orthodontic brackets. RESULTS: Finite element analysis showed that the ceramic brackets on the maxillary teeth revealed the lowest stresses on the adhesive and enamel compared to the other type of brackets. In mandibular teeth the highest stress was found on the bracket and adhesive during shear force loading on lingual Stainless steel brackets. Finite element method simulation indicated that the maximum principal stresses were distributed asymmetrically over the enamel, adhesive layer, and bracket for al l the bracket -adhesive-tooth systems. CONCLUSION: The results of this study have highlighted the stresses distributed on enamel, adhesive, and bracket by considering factors like differences in tooth morphology, tooth surfaces on which bracket is bonded, and differences in bracket material. Ceramic brackets presented with the higher bond strength and lower stresses on both the cement and enamel compared with metallic brackets. Shear mode of debonding places relatively less stress on enamel, irrespective of the material of the bracket.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | 241919551 |
| Uncontrolled Keywords: | Stress Distribution, Tooth Surface, Debonding, Orthodontic Brackets. |
| Subjects: | DENTAL > Orthodontics and Dentofacial Orthopedics |
| Depositing User: | Subramani R |
| Date Deposited: | 08 May 2022 10:08 |
| Last Modified: | 14 May 2022 03:40 |
| URI: | http://repository-tnmgrmu.ac.in/id/eprint/19806 |
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