Effect of 10% papain gel on enamel deproteinization before bonding procedure.
| Autor: | Pithon MM; Department of Orthodontics, Southwest Bahia University UESB, Bahia, Brazil., Ferraz Cde S, de Oliveira Gdo C, Pereira TB, Oliveira DD, de Souza RA, de Freitas LM, dos Santos RL |
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| Jazyk: | angličtina |
| Zdroj: | The Angle orthodontist [Angle Orthod] 2012 May; Vol. 82 (3), pp. 541-5. Date of Electronic Publication: 2011 Nov 11. |
| DOI: | 10.2319/062911-423.1 |
| Abstrakt: | Objective: To test the null hypothesis that enamel deproteinization with 10% papain gel does not increase the shear bond strength of orthodontic brackets bonded with resin-modified glass ionomer cement (RMGIC). Materials and Methods: One hundred and twenty bovine incisors were used and divided into eight groups: 1) Transbond XT according to the manufacturer's recommendations, 2) Transbond XT deproteinized with 10% papain gel, 3) RMGIC without enamel deproteinization and without etching, 4) RMGIC without enamel etching and with deproteinization with 10% papain gel, 5) RMGIC deproteinized with 10% papain gel and etched with polyacrylic acid, 6) RMGIC deproteinized with 10% papain gel and etched with phosphoric acid, 7) RMGIC deproteinized with 2.5% sodium hypochlorite, and 8) RMGIC etched with polyacrylic acid. After bonding, the mechanical tests were performed in a Universal mechanical test machine. The values obtained were submitted to an analysis of variance and afterward to the Tukey test (P < .05). Results: It was demonstrated that group 2 presented the highest shear bond strength value, and this differed statistically from the others; group 3 presented the lowest value and showed no differences from groups 4, 5, 7, and 8. Regarding the Adhesive Remnant Index, groups 2 and 6 presented the best results and groups 3 and 8 the worst. It could be concluded that enamel deproteinization with 10% papain gel increases the shear bond strength, irrespective of the etching agent. Conclusions: The hypothesis is rejected. Papain gel was shown to be a new ally in the orthodontic clinic. |
| Databáze: | MEDLINE |
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