A 2-year Clinical Impact of Bulk-fill Low-viscosity Resin Composite Liners in Class II Restorations.

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-01-15

Study Completion Date

2023-06-17

Brief Summary

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This randomized clinical trial evaluated the clinical performance of class II resin composite restorations using bulk-fill high-viscosity ormocer versus methacrylate-based with or without a thin layer of bulk-fill low-viscosity (flowable) resin composite liners (BLRC) over 2 years. The null hypotheses in the study were as follows: (1) Different types of matrix structures (ormocer vs. methacrylate) have no effect on the marginal integrity of restorations; (2) A layer of bulk-fill resin compo-site liner of the same category would not affect the marginal or internal adaptation of restorations.

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Detailed Description

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The study was designed following the Consolidated Standards of Reporting Trials (CONSORT) statement. approvement by the local ethics committee of Mansoura University code register was taken code M 11120520. The patients were selected as they searched for treatment in the Conservative Dentistry Department outpatient clinic, in the Faculty of Dentistry, Mansoura University. A group of 30 patients 21 Females and 9 males was chosen from among 92 participants after careful consideration of the inclusion and exclusion criteria. The sample size estimate was made based on the clinical success rate of posterior class II composite restorations observed in a prior study (97.5% at 24 months). The sample size needed per group was 23 teeth using a significance level of 0.05, power of 80%, and equivalency limit of 15%. A total of 30 patients were chosen, for a total of 120 restorations (30 for each group) after taking potential dropouts into account. To ensure adherence of the participants to the study, all volunteers underwent complete dental treatment and periodic follow-ups. The volunteers were contacted by telephone, WhatsApp message, Facebook, and e-mail for the assessments. Four attempts, including visits to the schools, were made to contact a volunteer before he/she was considered a "loss." both participants and examiners were blind to the interventions. An inter-examiner and intra-examiner agreement of at least 90% was requested before the beginning of the evaluation. Clinical evaluation was performed one week after finishing and polishing (baseline), after 6 months, 12 months, 18 months, and 24 months using the World Dental Federation (FDI) criteria.

Conditions

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Dental Caries Class II

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

participants had at least four class II cavities in a split-mouth design and randomly each cavity was restored using one of four strategies( groups applied)

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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