CLINICAL COMPARISON OF DIFFERENT GLASS IONOMER-BASED RESTORATIVES AND A BULK-FILL RESIN COMPOSITE IN CLASS I CAVITIES: A 48-MONTH RANDOMIZED SPLIT-MOUTH CONTROLLED TRIAL

Hacettepe University30 enrolled

Overview

The aim of this study is to compare the clinical performances of high-viscosity glass ionomer (GI), glass carbomer (GC), zirconia-reinforced GI (ZIR), and bulk-fill (BF) composite resin restorations.For this purpose, two calibrated operators placed 128 restorations in 30 patients with a mean age of 21 years. The restorations will be evaluated by one examiner at baseline and at 6, 12, 18,24, and 48 months using the modified US Public Health Service criteria. The data will statistically analyzed.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Class I Dental Caries

Interventions

class I restoration placement

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * patients presenting 1) at least four single-surface occlusal caries on their posterior molar teeth (first and/or second molars); 2) teeth to be restored had to be vital and without pulpal or periodontal disease, pain, and preoperative sensitivity; 3) teeth should be in occlusion; and 4) must agree to come to follow-up appointments. Exclusion Criteria: * patients with 1) poor oral hygiene, serious health problems, and/or heavy bruxism; 2) partly erupted teeth; 3) absence of adjacent and antagonist teeth; 4) teeth with interproximal caries; and 5) inability to attend recalls.

Outcomes

Primary Outcomes

Retention Alpha for at least 90% of the restorations

The primary factor for determining the clinical performance of a restorative material is the retention rate. It represents the survival rates of the restorations after a period of time. According to ADA guidelines, a restorative material should show at leat 90% alpha retention rate after 18 months to be considered as clinically acceptable. The retention is assesed as alpha (retentive restoratation) or charlie (failed restoration). Clinical evaluation is performed to examine if the restoration is in place or has fallen.

Time frame: 24 months

Secondary Outcomes

marginal adaptation score alpha

It represents the marginal integrity of the restorations. It is scored as alpha (perfect marginal adaptation), bravo (detectable marginal discrepency, clinically acceptable) or charlie (marginal crevice, clinically unacceptable). The examination of marginal adaptation is performed by clinical examination of the restoration with probe.