Effects of natural products-based dentifrices on acrylic resin for denture bases: A simulated period of 4 years.

Purpose: To evaluate the antimicrobial activity of dentifrices based on Malva sylvestris and propolis and the effect on the acrylic resin.

Methods: The inhibitory effect against Candida albicans, Enterococcus faecalis and Streptococcus mutans was determined. The specimens of resin were divided into groups: Control (brushing with distilled water); brushing with Colgate; brushing with Protex; brushing with Malvatricin, brushing with Proporalcare Dental Gel and brushing with Green Propolis Dental Gel.

The long-term effect of sub-boiling water on dental unit waterlines and its ability to control cross-contamination in dentistry.

This study investigated the effect of water at high temperature on the physical and mechanical properties of polyurethane and on biofilm removal, aiming for its applicability in dental unit waterlines. The evaluations were carried out after simulating a 1-year period of daily immersion and measured changes in color, microhardness, surface roughness, and tensile strength before and after reproducing a disinfection protocol. For antibiofilm activity measurement, fragments of waterline were contaminated with Pseudomonas aeruginosa and submitted to the disinfection protocols.

Effect of conventional and rolled cigarette smoke on the colour of artificial teeth and effectiveness of hygiene protocols in removing pigmentation - An study.

Context: Artificial teeth are widely used in oral rehabilitation. Despite the benefits, they are more susceptible to colour changes, causing aesthetic problems.

Aims: To evaluate the effect of conventional cigarette and straw smoke on the colour of artificial teeth and the effectiveness of hygiene protocols in removing pigmentation.

Laser irradiation prevents root caries: Microhardness and scanning electron microscopy analysis.

Context: A promising option for the prevention of dental caries is the use of laser irradiation.

Aims: Evaluate the effects of Er:YAG, Nd:YAG, and CO laser irradiation, associated or not to 2% sodium fluoride (2% NaF), on root caries prevention.

Material And Methods: One hundred and four human root dentin samples were divided in eight groups (n = 13).

Influence of glucose supplementation on biofilm formation of Candida albicans and Candida glabrata isolated from diabetic and non-diabetic individuals.

Objective: This study evaluated the effect of different glucose concentration on biofilm formation of Candida albicans and Candida glabrata strains isolated from diabetic and non-diabetic individuals.

Methods: The study was divided into two stages: (I) selection and identification of 48 C. albicans and C.

Nutritional Status is Associated with Permanent Tooth Eruption in a Group of Brazilian School Children.

The present study aimed to investigate the association between nutritional status with delayed tooth eruption (DTE). Oral examination was performed in schoolchildren (8-11 years old), and DTE was defined by absence of dental gingival emergence or when primary tooth was still present in the oral cavity after the expected time. BMI -score of each child were collected and nutritional status was defined.

Effect of saliva and beverages on the surface roughness and hardnessof acrylic resin modified with nanomaterial.

Purpose: To evaluate the surface roughness and hardness of thermopolymerized acrylic resin incorporated with nanostructured silver vanadate (AgVO3) subjected to saliva and beverages.

Methods: The 128 specimens (5×5×2 mm) were prepared in thermopolymerized acrylic resin, according to the AgVO3 concentrations (n=32): 0%, 2.5%, 5% and 10%.

Development of an Impression Material with Antimicrobial Properties for Dental Application.

Purpose: To evaluate the antimicrobial activity and physico-mechanical properties of an irreversible hydrocolloid in which nanostructured silver vanadate decorated with silver nanoparticles (AgVO ) was added at various concentrations (0% - control, 2.5%, 5%, and 10% by weight).

Materials And Methods: The agar diffusion method (n = 10) was used to evaluate the inhibitory effect on the following species: Streptococcus mutans, Staphyloccocus aureus, Pseudomonas aeruginosa, Escherichia coli, and Candida albicans.

Influence of Adding Nanoparticles of Silver Vanadate on Antibacterial Effect and Physicochemical Properties of Endodontic Sealers.

Introduction: The aim of this study was adding the nanostructured silver vanadate decorated with silver nanoparticles (AgVO) (0, 2.5, 5, and 10%) to the endodontic sealers AH-Plus, Sealer 26 and Endomethasone N, and evaluate the antimicrobial activity, solubility and pH

Methods And Materials: The antimicrobial activity of freshly mixed sealers (=10) and set sealers (=9) against () was evaluated by colony forming units per milliliter and epifluorescence microscopy. Solubility (=9) and pH (=10), 6 and 24 h and 7, 14, and 30 days were also evaluated.

Analysis of the oral microbiome on the surface of modified dental polymers.

Objectives: This study characterized the microbial diversity of formed biofilm on the surface of acrylic resins modified with nanostructured silver vanadate decorated with silver nanoparticles (AgVO) after incubation in human saliva.

Design: Resin specimens prepared with AgVO at concentrations 0%, 1%, 2.5%, and 5% by either vacuum mixing or polymer solubilization were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD).

FT-Raman spectroscopy, µ-EDXRF spectrometry, and microhardness analysis of the dentin of primary and permanent teeth.

The chemical compositions (organic and inorganic contents) and mechanical behaviors of the dentin of permanent and deciduous teeth were analyzed and compared using X-ray fluorescence spectrometry (µ-EDXRF) Fourier transform Raman spectroscopy (FT-Raman) and a microhardness test (HD). Healthy fresh human primary and permanent molars (n = 10) were selected, The buccal surfaces facing upwards were stabilized in an acrylic plate, flattened, polished, and submitted to the µ-EDXRF, FT-Raman, and HD analysis. The results of the analysis were subjected to ANOVAs and Mann-Whitney U/Student's t multiple comparisons tests.

Analyzing the Influence of a New Dental Implant Design on Primary Stability.

Background: The macrogeometry of dental implants strongly influences the primary stability and hence the osseointegration process.

Purpose: Compare the performance of conventional and modified implant models in terms of primary stability.

Materials And Methods: A total of 36 implants (Neodent®) with two different formats (n = 18): Alvim CM (Conical CM, Ø 4.

Analysis of the influence of implant shape on primary stability using the correlation of multiple methods.

Objectives: The purpose of this study was to analyze the influence of the shape of various implants and the density of substrate on primary stability using a combination of methods.

Materials And Methods: Fifty-four Neodent® brand cylindrical and conical implants with different prosthetic platforms were used. Implants were inserted into a pork rib bone and polyurethane blocks.

In vitro microstructural analysis of dental implants subjected to insertion torque and pullout test.

The change in the implant microstructure during handling may reduce the potential of surface treatment on the osteoinduction and, therefore, on the osseointegration. The aim of this study was to evaluate by energy-dispersive X-ray spectroscopy (EDX) the effect of insertion torque and pullout test on the microstructure of dental implants with different shapes. Four shapes of implants (n=8) were selected: conical with surface treatment (COTS), cylindrical with surface treatment (CTS), cylindrical with double surface treatment (CTSD) and cylindrical with machined surface (CSU).