Effects of different toothpastes on the color and whiteness of stained anterior composite resin.

Purpose: To evaluate changes in the color of an anterior nanohybrid composite resin and differences in its whitening index after 30 days of brushing with six brands of whitening toothpaste in vitro to simulate the situation in individuals with high coffee consumption.

Methods: Eighty-four disk-shaped resin specimens were prepared (shade A2). For initial staining, the samples were immersed in coffee solution for 14 days and then divided into eight groups for treatment with various toothpastes.

Micro shear bond strength of mineral trioxide aggregate to different innovative dental restorative materials.

The objective of this in vitro study was to investigate the micro shear bond strength (µSBS) of mineral trioxide aggregate to four different restorative materials. Sixty mineral trioxide aggregate (MTA) samples were randomly assigned into four experimental groups based on the restorative materials used: nanohybrid resin composite as a control, giomer, alkasite and ormocer. µSBS samples were prepared for each group ( = 15).

Effects of different universal adhesives and surface treatments on repair bond strength between resin composites.

Objective: This study aimed to evaluate the effects of different universal adhesives and surface treatments on the repair bond strength between resin composites.

Materials And Methods: A total of 220 composite samples were divided into three groups according to the adhesive resin to be applied: 1) Scotchbond Universal, 2) G-Premio Bond, and 3) Peak Universal Bond. They were then divided into seven subgroups according to surface treatments (n = 10): A) air abrasion, B) air abrasion+silane, C) hydrofluoric acid, D) hydrofluoric acid+silane, E) air abrasion+hydrofluoric acid+silane, F) silane, and G) no surface treatment (negative control).

Surface degradation evaluation of different self-adhesive restorative materials after prolonged energy drinks exposure.

Aim: To evaluate the effects of energy drinks and soft beverages on the surface degradation of different self-adhesive materials.

Materials And Methods: A 156 disc shaped specimens of each of the following materials were prepared: Alkasite (Cention N, CN), High viscozity glass ionomer (Equia Forte, EF), Glass Carbomer (GCP Fill, GC) (n = 52). After specimen preparations, baseline surface roughness measurements were done using a 3D non-contact optical profilometer.

Effect of different dry-polishing regimens on the intrapulpal temperature assessed with pulpal blood microcirculation model.

Objective: The aim of the study was to evaluate the effect of different dry-polishing regimens on the intrapulpal temperature assessed using a pulpal blood microcirculation model.

Materials And Methods: Eighty extracted human mandibular premolar teeth were used. Standardized class V cavity preparations were performed and were then restored.

Effect of tooth discolouration severity on the efficacy and colour stability of two different trayless at-home bleaching systems.

The use of trayless at-home bleaching agents in darker teeth is raising some concerns due to their unknown efficacy. The purpose of this in vitro study was to evaluate the effect of tooth discolouration severity on the efficacy and colour stability of two different trayless at-home bleaching systems. Ninety enamel-dentin samples were divided into two groups: lighter tand darker teeth.

Effect of resin infiltration and microabrasion on the microhardness, surface roughness and morphology of incipient carious lesions.

Objective: The effects of resin infiltration and microabrasion on incipient carious lesions by surface microhardness, roughness and morphological assessments, and resistance to further acid attack of treated lesions were evaluated.

Material And Methods: Eighty artificially-induced incipient lesions were randomly divided into five groups (n = 16): resin infiltration with an adhesive resin (Excite F, Ivoclar Vivadent, Schaan, Liechtenstein), resin infiltration with a resin infiltrant (Icon, DMG, Hamburg, Germany), microabrasion without polishing (Opalustre, Ultradent, South Jordan, UT, USA), microabrasion with polishing (Opalustre, Ultradent, Diamond Excel, FGM, Joinville, SC, Brazil), and distilled water (control group). All specimens were exposed to demineralization for another 10 d.

clinical evaluation of enamel microabrasion for the aesthetic management of mild-to-severe dental fluorosis.

Statement Of The Problem: The clinical performance of enamel microabrasion alone for aesthetic management of dental fluorosis is debatable.

Purpose Of The Study: This study aimed to compare the clinical efficacy of enamel microabrasion for the aesthetic management of mild-to-severe dental fluorosis.

Methods/materials: A total of 154 fluorosed incisors and canines in 14 patients on the basis of the fluorosis were included; the teeth were classified as mild (group I, n = 53), moderate (group II, n = 56), and severe (group III, n = 45).