Evaluation of Cleaning Methods on Lithium Disilicate Glass Ceramic Surfaces After Organic Contamination.

The purposes of this study were to 1) evaluate the effectiveness of different cleaning methods from a previously etched and silanized lithium disilicate glass ceramic (EMX) surface after contact with organic fluids (saliva or human blood) and 2) assess the effect of applying a new silane layer after the cleaning methods on the microshear bond strength (mSBS) of resin cement to EMX. EMX discs were etched with 5% hydrofluoric acid (HF) and properly silanized. Three control groups were created (n=10): control (without contamination), saliva positive, and human blood positive.

Use of Water by Schoolchildren: Impact of Indirectly Supervised Daily Toothbrushing-A Pilot Study.

Aim: This present longitudinal, quantitative, and analytical pilot study evaluated the impact of daily indirectly supervised toothbrushing on water consumption.

Materials And Methods: The study was carried out in a social center that provided care to children aged 5-14 years in Campinas in the state of São Paulo. Calibrated hydrometers were installed on taps used by the children, and the daily volume of water used was measured for 25 school days (T0).

Factors associated with Brazilian adolescents' satisfaction with oral health.

Objective: To identify the sociodemographic, clinical and self-reported indicators of oral health associated with Brazilian adolescents' satisfaction with oral health.

Methods: Secondary data were used following the examination of 4,231 adolescents, aged 15 to 19 years, participating in a national oral health survey (SBBrasil 2010). The independent variables were grouped into demographics, predisposition/facilitation, oral health conditions and perceived dental treatment need.

Surface characterisation and bonding of Y-TZP following non-thermal plasma treatment.

Objectives: (1) To chemically characterise Y-TZP surface via X-ray photoelectron spectroscopy (XPS) and evaluate the surface energy levels (SE) after non-thermal plasma (NTP). (2) To test the microtensile bond strength (MTBS) of Y-TZP bonded to cured composite disks, after a combination of different surface conditioning methods.

Methods: Twenty-four Y-TZP discs (13.

Effect of 10% carbamide peroxide dental bleaching on microhardness of filled and unfilled sealant materials.

Purpose: The purpose of this study was to quantitatively evaluate the effect of 10% carbamide peroxide on the microhardness of pit and fissure sealant materials.

Methods: Fluroshield, Vitroseal Alfa, and one unfilled (Clinpro) sealants were placed in Teflon matrices (4 mm in diameter by 2 mm in height) and polymerized for 40 seconds. A total of 20 specimens were prepared for each material, in which half were assigned as the control group (stored in artificial saliva and no bleaching treatment).

Prevalence of pacifier-sucking habits and successful methods to eliminate them--a preliminary study.

Purpose: The goal of this study was to verify the prevalence of nutritive (breast-feeding and bottle-feeding) and non-nutritive (pacifier) sucking habits, the methods used to eliminate them, and success of these methods.

Methods: To collect the data, 502 questionnaires were distributed to parents of 0- to 6-year-old children.

Results: Bottle-feeding was used by 83% and pacifier by 63% of children.

Effect of thermal and mechanical load cycling on microtensile bond strength of a total-etch adhesive system.

To evaluate the effect of thermal and mechanical cycles on dentin bond strength to cervical margins of Class II restorations, 80 box-type Class II cavities were prepared on the surfaces of bovine incisors. The cavities were restored with Single Bond (3M-ESPE) and Z-250 composite (3M-ESPE) according to manufacturer's instructions. The incisors were divided into four groups: G1-Control, G2- Thermal cycling (2,000 cycles, 5 degrees C-55 degrees C), G3- Mechanical cycling (100,000 cycles; 50N) and G4- Thermal and mechanical cycling (2,000 cycles 5 degrees C-55 degrees C/100,000 cycles; 50N).

Surface finishing of resin-modified glass ionomer.

This study utilized spectrophotometry to evaluate in vitro superficial dye deposition on resin-modified glass ionomer, following different surface finishing and polishing treatments. Materials that were photocured adjacent to the mylar strip produced the surfaces with the lowest mean after superficial staining. A restorative technique without excesses resulted in a smoother surface and prolonged the life of the restoration.