Performance of Curing Times and Intensitis

Cairo University28 enrolled

Overview

The aim of the study is to compare the effect of high intensity light cure (2200 mw/cm2) for 1 second with low intensity light cure (1200 mw/cm2) for 20 seconds on the clinical performance of bulk fill resin composite restorations in compound Class II cavities of posterior teeth

The prepared cavities will be conditioned with 35% phosphoric acid gel for15 seconds, then will be rinsed and dried with compressed air. Then application of universal adhesive system to all cavity with bond brush then light cured for 10 seconds using LED light curing unit (1200 mw/cm2). Extra-Fill bulk fill resin composite will be applied in onebulk increment and will be light polymerized for 1 second using (LED) light curing unit (2200 mw/cm2).for intervention group Extra-Fill bulk fill resin composite will be applied in one bulk increment and will be light polymerized for 20 seconds using (LED) light curing unit (1200 mw/cm2) fot control group

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Enrollment

Conditions

Clinical Performance

Interventions

High intensity light cureDEVICE

Bulk fill resin composite restoration cured with high intensity light curing (2200 mw/cm2)To achieve increased power and a wider spectrum for short exposure time (1 second) to overcome resin composite restoration techniques sensitivity and shorten the clinical procedure

Eligibility

Sex: ALLMin age: 20 YearsMax age: 40 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Permanent premolars or molars. * Moderate to deep compound class II cavities. * Vital with the positive reaction to a cold thermal stimulus. * Absence of parafunctional habits Exclusion Criteria: * Teeth with clinical symptoms of pulpitis such as spontaneous pain or sensitivity to pressure. * Non-vital teeth. * Secondary carious lesions. * Advanced periodontal disease

Locations (2)

Faculty of Dentistry

Giza, Cairo Governorate, Egypt

Faculty of Dentistry

Cairo, Egypt

Outcomes

Primary Outcomes

Clinical performance

Clinical performance of bulk fill resin composite restorations will be evaluated by modified USPHS Criteria includes: * Marginal Discoloration * Marginal adaptation * Secondary caries * Postoperative sensitivity For each criteria one score will be chosen from 3 scores (Alpha,Bravo\&Charlie).

Time frame: Change from the baseline at 6 months and12 months

Data from ClinicalTrials.gov

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