Objective: To compare the shear bond strength and ARI score of Edgewise brackets bonding with three adhesives under moist and dry conditions after salivary contamination.
Methods: Sixty extracted human premolars were randomly and equally divided into 3 groups. Edgewise brackets were bonded directly with composite resin, super bond C&B and single component adhesive under moist and dry conditions after salivary contamination. The shear bond strength and ARI score were measured and recorded.
Results: The shear bond strength of Edgewise brackets bonding with composite resin and single component adhesive under moist condition after salivary contamination decreased significantly and it can't meet the requirement of orthodontic therapy (6-8 MPa) while that under dry condition can. Super bond C&B can meet the requirement of orthodontic therapy on both conditions.
Conclusion: Super bond C&B can be used under both moist and dry conditions after salivary contamination. Composite resin and single component adhesive can only be used under dry condition after salivary contamination.
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