NCT02751970

Clinical Trial of the Effect of Different Categories of Adhesive System

Randomized Clinical Trial of the Effect of Different Categories of Adhesive System

• Status: Unknown
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 185 (estimated)
• Sponsor: Universidad de Valparaiso · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

This study aims to evaluate the clinical effectiveness of contemporary resin-based adhesive systems by retention rate of resin restorations placed in non carious cervical lesions with four different adhesive strategies: 3 and 2 steps etch-and-rinse adhesive system, 2 and 1 step self-etch adhesive systems.

Detailed description

The etch-and-rinse (3 and 2 steps) and self-etch (1 and 2 steps) adhesive systems allow the bond between the resins restorations with the dental substrates, but they have mechanism of action different. The success of resin composite restorations is reliant upon adhesion to the underlying tooth via adhesive systems. The mechanism of adhesion to enamel and dentine could be involved for one hand, the etching the substrates with 30-40% phosphoric acid, followed by the application of a primer and subsequently an adhesive resin 3 steps etch-and- rinse approach or 2 steps when to combine the primer and adhesive into one bottle. For another hand, the self- etch systems with acid monomers in their primer, allow conditioning the surface without phosphoric acid step. So, they consist of either a self-etching primer accompanied by an adhesive resin applied as a subsequent step (2 steps) or a self-etch adhesive, which does not require a separate primer (1 step).

Conditions

• Dental Caries

Interventions

Type	Name	Description
PROCEDURE	Dental restoration	Methacrylate resins will be used to complement the cavity restoration after of adhesive procedure
PROCEDURE	3 step ER	Enamel and dentin will be conditioning with 35% phosphoric acid, then applied primer, and then applied adhesive resin.
PROCEDURE	2 step ER	Enamel and dentin will be conditioning with 35% of phosphoric acid, then applied primer/adhesive resin.
PROCEDURE	2 step SE	Enamel and dentin will be conditioning with acidic primer, then applied primer/adhesive resin.
PROCEDURE	1 step SE	Enamel and dentin will be conditioning with acidic primer/adhesive resin.

Timeline

• Start date: 2014-04-01
• Primary completion: 2016-05-01
• Completion: 2018-04-01
• First posted: 2016-04-26
• Last updated: 2016-04-26

Locations

1 site across 1 country: Chile