background and aims. this in vitro study was designed to compare enamel demineralization depths adjacent to bands cemented with zinc polycarboxylate, glass ionomer (gi) and resin-modified glass ionomer (rmgi), in order to achieve minimal enamel demineralization during orthodontic treatment. materials and methods. sixty fully developed extracted third molars were randomly divided into three test...

the aim of this study was to compare the shear bond strength (sbs) of resin modified glass ionomer (rmgi) and composite resin for bonding metal and ceramic brackets.eighty-eight human premolars extracted for orthodontic purposes were divided into 4 groups (n=22). in groups 1 and 2, 22 metal and ceramic brackets were bonded using composite resin (transbond xt), respectively. twenty-two metal and...

Aim: Gingival margins of posterior composite restorations is usually more apical compared to CEJ. The present study was aimed to determine the microleakage in gingival margins of Class II composite restorations through using three different types of resin cements as liners. Materials and Methods: In this in-vitro study, two mesial and distal Class II cavities with 1mm gingival margins were crea...

AIM The purpose of this study was to evaluate the activation of resin-modified glass ionomer restorative material (RMGI, Vitremer-3M-ESPE, A3) by halogen lamp (QTH) or light-emitting diode (LED) by Knoop microhardness (KHN) in two storage conditions: 24 hrs and 6 months and in two depths (0 and 2 mm). MATERIALS AND METHODS The specimens were randomly divided into 3 experimental groups (n = 10...

PURPOSE To (1) study the injury and healing activity of the pulp tissue to calcium hydroxide [Ca(OH)2], resin composite (RC) and resin-modified glass-ionomer (RMGI) materials when used as direct pulp capping agents, and (2) compare the incidence of healing defects between these materials. METHODS 135 Class V pulp exposed cavities were prepared in non-human primate teeth. Direct pulp capping w...

PURPOSE The aim of this work is to study and compare the retention rate, caries-preventing and antibacterial effects of resin-modified glass ionomer and flowable composite in comparison to conventional fissure sealant. METHODS Forty-five children aged 7-10 years with newly erupted lower first permanent molars were randomly divided into three equal treatment groups. Group I: sealed by a conven...

Objective The aim of the study was to evaluate the association between subgingival restorations and the target periodontopathogenic bacteria (Pg, Td and Pi) in subgingival biofilm during one year after combined restorative-periodontal treatment. Material and Methods Seventeen systemically healthy subjects, who were positive for the presence of three cervical lesions associated with gingival rec...

introduction: the aim of this study was to compare the shear bond strength of a self-adhering flowable composite (safc) and resin-modified glass ionomer (rmgi) to mineral trioxide aggregate (mta) and calcium-enriched mixture (cem) cement. methods and materials: a total of 72 acrylic blocks with a central hole (4 mm in diameter and 2 mm in depth) were prepared. the holes were filled with mta (su...