Chemical disinfectants are usually associated with mechanical methods to remove stains and reduce biofilm formation. This study evaluated the effect of disinfectants on release of metal ions and surface roughness of commercially pure titanium, metal alloys, and heat-polymerized acrylic resin, simulating 180 immersion trials. Disk-shaped specimens were fabricated with commercially pure titanium ...

STATEMENT OF PROBLEM Denture tooth fracture or debonding remains a common problem in removable prosthodontics. PURPOSE The purpose of this in vitro study was to explore factors determining failure strengths for combinations of different denture tooth designs (shape, materials) and injection or compression molded denture base resins. MATERIAL AND METHODS Three central incisor denture tooth d...

STATEMENT OF PROBLEM Fracture of a repaired denture base often occurs at the junction of the base and repair materials rather than within these materials. PURPOSE The purpose of the study was to evaluate the shear bond strengths of 4 denture base acrylic resins following the use of 3 chemical solvents and to examine treated acrylic resin surfaces under a field emission scanning electron micro...

background and aims. the aim of this study was to compare flexural strength of specimens processed by conventional and injection-molding techniques. materials and methods. conventional pressure-packed pmma was used for conventional pressure-packed and injection-molded pmma was used for injection-molding techniques. after processing, 15 specimens were stored in distilled water at room temperatur...

statement of problem: fracture strength of a denture base resin is of great concern, and many approaches have been used to strengthen acrylic resin dentures. purpose: the aim of this study was to measure the transverse strength of a heat polymerized acrylic resin, after reinforcement with metal wire and two types of glass fibers. materials and methods: forty rectangular specimens (65.0×10.0×3.3...

1Full Professor, Department of Dental Materials and Prosthodontics, Araraquara Dental School, UNESP Univ. Estadual Paulista , Araraquara, SP, Brazil. 2Associate Professor, Department of Dental Materials and Prosthodontics, Araraquara Dental School, UNESP Univ. Estadual Paulista, Araraquara, SP, Brazil. 3Former graduate student, Department of Dental Materials and Prosthodontics, Araraquara Denta...

BACKGROUND AND AIMS There are many edentulous people with severely resorbed residual ridges and non-resilient lin-ing mucosa that are unable to tolerate occlusal forces during functional and parafunctional movements. Lining the tissue surface of dentures with a flexible material can theoretically distribute and absorb forces with cushioning effect. The aim of this study was to evaluate the effe...

Background and objectives: Adequate retention is a basic requirement for the acceptance of complete denture. The aim this study was to evaluate quality fluid denture base materials compare it with conventional acrylic materialsMethod: Sixteen edentulous male patients an age 45-60 years participated in study. For each patient two bases were constructed, one them made from other hot materials. A ...

Purpose: The aim of this study was to evaluate the effect of oral microorganism on surface topography of acrylic resin denture base material. Materials and methods: Fifty rectangular plates of dimensions 30mm x 20mm x 1 mm were fabricated with heat polymerizing acrylic resin denture base material. an area of 10mm x 10 mm in the center of each acrylic plate was marked for evaluation of surface t...

Background: Traditionally for decades most oral maxillofacial prosthesis were fabricated using heat cured acrylic resin with or without Co-Cr metal base, however, recently polyamide materials that are processed thermally not chemically have been widely promoted for use as the perfect alternative to conventional hard acrylic dentures. The aim of this study was to assess the reaction of human mes...