| ORIGINAL ARTICLE |
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| Year : 2022 | Volume
: 11
| Issue : 1 | Page : 23 |
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“Effect of grape seed and green tea on shear bond strength of brackets bonded to bleached enamel with and without Lase Peroxide Lite” – An in vitro study
Jaya P Mallepally, Kaladhar R Aileni, Gayathri D Sugavasi, K Siva Kumar, Naveen Pittala, Shree S Nukala
Department of Orthodontics and Dentofacial Orthopedics, SVS Institute of Dental Sciences, Appanapally, Yenugonda, Mahabubnagar, Telangana, India
Correspondence Address:
Jaya P Mallepally
Department of Orthodontics and Dentofacial Orthopedics, SVS Institute of Dental Sciences, Appanapally, Yenugonda, Mahabubnagar, Telangana
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/jos.jos_164_21
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OBJECTIVE: To investigate the effect of antioxidants on shear bond strength of brackets bonded to bleached enamel with and without titanium dioxide nanoparticles (Lase Peroxide Lite).
MATERIALS AND METHODS: One hundred and five human maxillary premolars were randomly divided into seven groups (n = 15). Group I served as control, in group II-A bleaching was performed with Opalescent Boost. In group II-B and C, bleaching was performed with Opalescent Boost followed by application of 5% grape seed and 10% green tea extracts, respectively. Group III-A bleaching was performed with Lase Peroxide Lite. Group III-B and III-C bleaching was performed with Lase Peroxide Lite followed by application of 5% grape seed and 10% green tea extracts, respectively. Brackets were bonded with composite resin and cured with light emitting diode (LED) light. Shear bond strength of brackets was tested with a Universal testing machine.
RESULTS: There was statistically significant difference in the shear bond strength among the seven groups included in the study. There is a statistically significant decrease in shear bond strength in group II-A (8.2 ± 1.6 Mpa), group III-A (8.6 ± 2.1 Mpa) when compared with group I-A (15.9 ± 1.4 Mpa). Among all experimental groups, group II-A showed the lowest mean shear bond-strength values (8.2 ± 1.6 Mpa) (P < 0.005). Group III-C (14.9 ± 2.2 Mpa) has significantly higher shear bond strength.
CONCLUSION: Bleaching reduced the shear bond strength of brackets below acceptable level while application of grape seed and green tea extracts has recovered the shear bond strength.
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