نتایج جستجو برای: denture bases

تعداد نتایج: 74301  

2014
Hakan Akin Faik Tugut Burcu Mutaf Umit Guney

PURPOSE The purpose of this study was to investigate the bonding properties of denture bases to silicone-based soft denture liners immersed in isobutyl methacrylate (iBMA) and 2-hydroxyethyl methacrylate (HEMA) for various lengths of time. MATERIALS AND METHODS Polymethyl methacrylate (PMMA) test specimens were fabricated (75 mm in length, 12 mm in diameter at the thickest section, and 7 mm a...

2015
Hamada Zaki Mahross Kusai Baroudi

OBJECTIVE The objective was to investigate the effect of silver nanoparticles (AgNPs) incorporation on viscoelastic properties of acrylic resin denture base material. MATERIALS AND METHODS A total of 20 specimens (60 × 10 × 2 mm) of heat cured acrylic resin were constructed and divided into four groups (five for each), according to the concentration of AgNPs (1%, 2%, and 5% vol.) which incorp...

2014
Sanjeev Kumar Swatantra Agarwal Sankalp Sharma Bharat Kedia

Objectives: This In-vitro study was designed to compare the Impact strength and Residual monomer content of conventional and high impact types of denture base resins polymerized by Compression and Injection molding technique with short curing cycle. Materials and Methods: Forty samples were made (twenty from each technique)in the dimension of 60 × 10 × 3 with 2 mm notch on the thickness side. T...

2016
Amani Ramadan Moussa Wessam Mohamed Dehis Asmaa Nabil Elboraey Hisham Samir ElGabry

AIM This study aimed to verify the influence of oral environment and denture cleansers on the surface roughness and hardness of two different denture base materials. METHODS A total of sixteen identical removable disc specimens (RDS) were processed. Eight RDS were made from heat-cured acrylic resin (AR) and the other eight were fabricated from thermoplastic injection moulded resin (TR). Surfa...

Journal: :Dental materials journal 2011
Manabu Kanazawa Masanao Inokoshi Shunsuke Minakuchi Naoto Ohbayashi

The purpose of this study was to evaluate the fabrication of a complete denture using a CAD/CAM system. Cone beam CT was used to measure the complete denture and the artificial teeth. After a 3D complete denture image was structured using 3D CAD software, we factored out the artificial teeth and obtained a 3D denture base image. A machining center cut an acrylic resin block, and fabricated an a...

Journal: :Dental materials journal 2012
Hae-Hyoung Lee Chung-Jae Lee Kenzo Asaoka

The aim of the present study was to measure various mechanical properties of acrylic denture base resins, including flexural modulus, flexural strength, fracture toughness, Barcol and Vickers hardness and their related properties, and to investigate correlations between different mechanical properties. Resin specimens were prepared according to manufacturers' recommended instructions. The mecha...

Journal: :Dental materials journal 1983
K Inoue K Fujii A Ikeda T Kakiuchi

Recently, some fluid or pour resins have been introduced to simplify the processing of dentures. However, because of the presence of relatively high residual monomer, the mechanical properties of these resins are inferior to those of heat cured resins.1,2) The purpose of the present investigation is to measure the quantities of residual monomer and to investigate the effect of the residual mono...

2011
Ana Lucia MACHADO Eunice Teresinha GIAMPAOLO Carlos Eduardo VERGANI Juliana Feltrin de SOUZA Janaina Habib JORGE

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...

Journal: :Brazilian dental journal 2008
Ana Carolina Miéssi Marcelo Coelho Goiato Daniela Micheline dos Santos Stefan Fiúza de Carvalho Dekon Ricardo Coelho Okida

The aim of this study was to evaluate the dimensional changes of denture bases made from different resins after different storage periods. For this purpose, 25 sets of plaster models/resin bases were prepared using 4 acrylic resins submitted to two types of polymerization: 1--QC-20 submitted to polymerization by microwave energy; 2--QC-20 submitted to polymerization by water hot bath; 3--Vipi C...

Journal: :Acta odontologica Scandinavica 2007
Andreas Faltermeier Michael Behr Martin Rosentritt Gerhard Handel

OBJECTIVE Since the properties of polymers can be influenced using electron-beam irradiation, the aim of this study was to investigate whether electron-beam post-curing can improve the mechanical properties of experimental denture base polymers. MATERIAL AND METHODS Rectangular specimens of different experimental polymeric blends were electron-beam irradiated (post-cured) with 25 kGy and 200 ...

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