Spectrophotometric evaluation of staining of different types of light-cure composite resins after exposure with different light-cure intensities: An study.

Context: Relation between the adequate intensity output of curing lights on color stability of composite resin is well accepted.

Aims: To investigate the effect of different light-curing intensities and its relation to color stability of different polymerized composite resin materials using the spectophotometric analysis.

Settings And Design: Comparative study done on composite resin discs.

Comparative evaluation of the remineralizing potential of different calcium and fluoride-based delivery systems on artificially demineralized enamel surface; an study.

Background: Enamel is the hardest and vastly mineralized structure of the human body. Inorganic salts make up the majority of it. Water and ions pass right through the enamel.

Microcomputed tomographic evaluation of shaping ability of two thermo mechanically treated single-file systems in severely curved roots.

Context: Canal shaping abilities such as canal transportation, centering ability, and preparation time are important and have to be considered before using any Nickel-Titanium file system.

Aim: This study aimed to evaluate and compare the amount of canal transportation, centering ability, and time required for the shaping of severely curved canals with WaveOne Gold (WOG) Primary Reciprocating file and One Curve (OC) Rotary file using the micro computed tomography (μCT).

Materials And Methods: Thirty intact mesial roots of extracted human mandibular first molars having severe curvature (25°-35°) were selected.

Shear bond strength of composite resin to resin-modified glass ionomer cement using 2-hydroxyethyl methacrylate-based and 2-hydroxyethyl methacrylate-free adhesive system.

Background: Sandwich technique combines the properties of both composite resin and glass ionomer cement to make the most of the physical and esthetic properties of each material. Bonding agents improve the wettability of GIC surface and improves the bond between composite resin and GIC. The aim of this study was to evaluate and compare shear bond strength of composite resin to resin modified glass ionomer cement using HEMA-based and HEMA-free adhesive systems.

Antimicrobial Efficacy of Different Endodontic Sealers against : An Study.

Objective: The aim of this study is to compare the antimicrobial efficacy of four different endodontic sealers against .

Material And Method: Four different endodontic sealers, namely, resin based (AH Plus), zinc oxide-eugenol based (Tubliseal), calcium hydroxide based (Sealapex), and mineral trioxide aggregate (MTA Fillapex) based were tested for their antimicrobial efficacy against using agar diffusion method. Four wells were made by the removal of agar at equidistant points and filled with freshly mixed respective root canal sealers and were inoculated with .

Efficacy of new irrigating solution on smear layer removal in apical third of root canal: A scanning electron microscope study.

Aims: The aim of this study is to evaluate and compare the smear layer removal efficacy of etidronic acid-based irrigating solution with others in the apical third of the root canal.

Materials And Methods: Forty human single-rooted mandibular premolar teeth were taken and decoronated to standardize the canal length. After biomechanical preparation, teeth were randomly divided into four groups ( = 10) and the final irrigation was carried out with tested irrigants.

Influence of light curing units on failure of directcomposite restorations.

Light polymerizable tooth colored restorative materials are most widely preferred for advantages such as esthetics, improved physical properties and operator's control over the working time. Since the introduction of these light polymerizable restorative materials, there has been a concern about the depth of appropriate cure throughout the restoration. Photopolymerization of the composite is of fundamental importance because adequate polymerization is a crucial factor for optimization of the physical and mechanical properties and clinical results of the composite material.

A clinical survey of the output intensity of 200 light curing units in dental offices across Maharashtra.

Aim: The purpose of this study is to examine the intensity of light curing units and factors affecting it in dental offices.

Materials And Methods: The output intensity of 200 light curing units in dental offices across Maharashtra were examined. The collection of related information (thenumber of months of use of curing unit, the approximate number of times used in a day, and presence or absence of composite build-ups) and measurement of the intensity was performed by two operators.