A Comparative Evaluation Of Shear Bond Strength Of Orthodontic Brackets Bonded After
Conditioning Of Enamel With 5.25% Sodium Hypochlorite And 10% Papain Gel: An In-Vitro Study
Ferin, Pradeep S*, Ravi S and Christin R Jacob
Orthodontics and Dentofacial Orthopedics, JSSAHER, India
*Corresponding Author: Pradeep S, Orthodontics and Dentofacial Orthopedics,
Received: April 13, 2022; Published: May 05, 2022
Objectives: The objective of this research was to evaluate the effect of conditioning the enamel surface with 10% papain gel and
5.25% sodium hypochlorite on the shear bond strength of orthodontic brackets and correlate it with the conventional bonding
mechanism utilizing a Universal Testing Machine.
Methodology: 90 extracted human premolars divided into three groups: In group 1, treatment with 5.25% sodium hypochlorite for
60 seconds on enamel surface followed by etchant and primer application. In group 2, treatment with 10% Papain gel for 40 seconds
followed by etching and primer application. In group 3, etching was followed by primer application. A universal testing machine was
used to record the shear bond strength of the orthodontic brackets.
Results: 5.25% sodium hypochlorite(15.10 ± 2.66) and 10% papain gel (15.66 ± 2.83) treatment on enamel before acid etching when
compared to the control group (12.82 ± 2.03) increased the shear bond strength with a statistically significant difference between
them ( p = 0.002, p < 0.001). The experimental groups, sodium hypochlorite (15.10 ± 2.66) and papain gel (15.66 ± 2.83) group were
comparable but did not show any statistically significant difference between them (p = 0.665).
Conclusion: Shear bond strength of orthodontic brackets can be significantly increased if the enamel is deproteinized with 5.25%
NaOCl and 10% papain gel before acid etching with 37% phosphoric acid compared to the conventional bonding technique. Deprot-
einizing enamel can be considered a cost-effective ally to increase orthodontic brackets' bond strength and thereby reduce the dura-
tion of orthodontic treatment.
Keywords: Deproteinization; White Spot Lesion; Enamel Conditioning; Shear Bond Strength; Papain Gel; Sodium Hypochlorite
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