Comparison of Shear Bond Strength of Ceramic Brackets Bonded To Ceramic Surface - An In-Vitro Study
Journal Title: Indian Journal of Dental Advancements - Year 2016, Vol 8, Issue 3
Abstract
Background: In recent years there has been an increase in the number of adults seeking orthodontic treatment and most of the adult patients usually present with restored teeth. Dental ceramics is widely used to restore missing and damaged teeth. Therefore, the Orthodontist is often faced with the challenge of effectively bonding orthodontic brackets to ceramic restorations in adult patient. Objectives: To compare the shear bond strength between ceramic brackets and ceramic surface with three different surface treatments. Materials & Methods: Thirty ceramic facets were prepared with a proper thickness of 2mm, resembling maxillary central incisor labial surface. These facets were then divided into 3 groups (n=10) i.e. Group 1: Treated with 9% HFA & silane, Group 2: sandblasted & silane, Group 3: 37% Phosphoric acid & silane. Thirty ceramic brackets were bonded on these facets as per manufacturer's instructions. These brackets were then de-bonded by universal testing machine to measure the shear bond strength values. The evaluation of the variation of the shear bond strength (SBS) among test groups was done using one-way ANOVA test and interexperimental group comparison was done by Newman-Keuls multiple post hoc test. Results: Group I (20.39±5.19MPa) showed the highest bond strength followed by Group II (15.42±3.65MPa) and Group III (14.30±2.55MPa). Statistically significant difference existed between group I & group II, group I & group III except group II & group III. Conclusion: Shear bond strength of ceramic brackets bonded to ceramic surfaces with all the three surface conditioning methods were adequate. On comparison of the three surface conditioning methods, 9% Hydrofluoric acid showed highest shear bond strength followed by Sandblasting and 37% Phosphoric acid.37% Phosphoric acid is recommended since it has adequate bond strength. It is least harmful to oral mucosa as compared to 9% Hydrofluoric acid and less cumbersome procedure when compared to Sandblasting.
Authors and Affiliations
Devyani Ninad Thorat
Keywords
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- EP ID EP475831
- DOI 10.5866/2016.8.10148
- Views 89
- Downloads 0
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