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Effect of Shortening the Etching Time on the Clinical Performance of Resin Composite Restorations in Primary Teeth

2016-11-22 14:08:21 | BioPortfolio

Summary

The aim of this study is to evaluate the effect of shortening the etching time on the 18-month clinical performance of resin composite restorations in primary molars after partial carious removal. This randomized clinical trial will include subjects (5-10 year-old children) selected at Pediatric Clinic of Federal University of Santa Maria. The sample will consist of 70 primary molars presenting active cavitated carious lesions (with radiographic involvement of the outer half of the dentin), located on the occlusal surface. The sample will be randomly divided into two groups according to the etching time of the dentin prior adhesive application (Adper Single Bond 2; 3M ESPE): recommend by manufacturers (15 seconds) and half-reduced etching time (7 seconds). The restorations will be clinically followed every 6 months for up to 18-month using the FDI criteria for clinical evaluation. Survival estimates for restoration longevity will be evaluated using the Kaplan-Meier method.

Description

The aim of this study is to evaluate the effect of shortening the etching time on the 18-month clinical performance of resin composite restorations in primary molars after partial carious removal. This randomized clinical trial will include subjects (5-10 year-old children) selected at Pediatric Clinic of Federal University of Santa Maria. The sample will consist of 70 primary molars presenting active cavitated carious lesions (with radiographic involvement of the outer half of the dentin), located on the occlusal surface. The sample will be randomly divided into two groups according to the etching time of the dentin prior adhesive application (Adper Single Bond 2; 3M ESPE): applying of 35% phosphoric acid by 15 s - recommend by manufacturers and half-reduced etching time (7 s). The restorations will be clinically followed every 6 months for up to 18-month using the FDI criteria for clinical evaluation. Survival estimates for restoration longevity will be evaluated using the Kaplan-Meier method.

Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment

Conditions

Dental Caries

Intervention

Total etching time, Half-reduced etching time

Location

Federal University of Santa Maria
Santa Maria
Rio Grande do Sul
Brazil
97015372

Status

Not yet recruiting

Source

Universidade Federal de Santa Maria

Results (where available)

View Results

Links

Published on BioPortfolio: 2016-11-22T14:08:21-0500

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Medical and Biotech [MESH] Definitions

Preparation of TOOTH surfaces and DENTAL MATERIALS with etching agents, usually phosphoric acid, to roughen the surface to increase adhesion or osteointegration.

Preparation of TOOTH surfaces, and of materials bonded to teeth or DENTAL IMPLANTS, with agents and methods which roughen the surface to facilitate adhesion. Agents include phosphoric or other acids (ACID ETCHING, DENTAL) and methods include LASERS.

The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity.

The ability to estimate periods of time lapsed or duration of time.

An acidifying agent that has expectorant and diuretic effects. Also used in etching and batteries and as a flux in electroplating.

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