نتایج جستجو برای: denture base resins

تعداد نتایج: 276810  

2016
Ippei Hamanaka Misa Iwamoto Lippo V. J. Lassila Pekka K. Vallittu Yutaka Takahashi

Objective This study investigated the wear resistance of injection-molded thermoplastic denture base resins using nanoindentation instrument. Materials and methods Six injection-molded thermoplastic denture base resins (two polyamides, two polyesters, one polycarbonate, one polymethylmethacrylate [PMMA]) and a PMMA conventional heat-polymerized denture-based polymer control were tested. Elastic...

Journal: :Dental materials journal 2007
Toshio Sato Hidekazu Takahashi Toshio Hongo Iwao Hayakawa

The purpose of this study was to evaluate the effect of degradation of a denture base resin on bond strength to relining resins. Denture base resin specimens were immersed under various conditions to simulate degradation. Tensile bond strength of denture base resin after immersion to relining resins was measured with or without surface grinding. The bond strength of denture base resin without g...

2018
Otto Steinmassl Vincent Offermanns Wolfgang Stöckl Herbert Dumfahrt Ingrid Grunert Patricia-Anca Steinmassl

Computer-aided design and computer-aided manufacturing (CAD/CAM) denture base manufacturers claim to produce their resin pucks under high heat and pressure. Therefore, CAD/CAM dentures are assumed to have enhanced mechanical properties and, as a result, are often produced with lower denture base thicknesses than conventional, manually fabricated dentures. The aim of this study was to investigat...

2015
Kaneyoshi Yoshida Yutaka Takahashi Ippei Hamanaka Tomohiro Kawaguchi Hirono Sasaki Hiroshi Shimizu

Objective: This study evaluated the reinforcing effect of glass fiber-reinforced composite (FRC) reinforcement on flexural strength at the proportional limit (FS-PL) of a repaired denture base resin. Materials and methods: Repaired denture base resins reinforced with metal and with FRC reinforcement, and that without reinforcement were tested. The ultimate flexural strength, the FS-PL and the e...

2017
Anand Porwal Meenakshi Khandelwal Vikas Punia Vivek Sharma

AIM The purpose of this study was to evaluate the effect of different denture cleansers on the color stability, surface hardness, and roughness of different denture base resins. MATERIALS AND METHODS Three denture base resin materials (conventional heat cure resin, high impact resin, and polyamide denture base resin) were immersed for 180 days in commercially available two denture cleansers (...

Journal: :The Journal of prosthetic dentistry 2007
Hiroshi Murata Rosangela Seiko Seo Taizo Hamada Gregory L Polyzois Mary J Frangou

STATEMENT OF PROBLEM Dynamic mechanical properties of hard, direct reline resins are important factors in the clinical success of dentures. However, little information is available on the nature of these properties. PURPOSE This study evaluated the dynamic mechanical properties of a variety of hard, direct reline resins: (1) visible light-polymerized, powder-liquid type, (2) visible light-pol...

Journal: :Journal of international oral health : JIOH 2014
Sitaram Prasad Kasina Tarannum Ajaz Sirisha Attili Hemchand Surapaneni Muralikrishna Cherukuri H P Srinath

BACKGROUND The aim of this study was to evaluate and compare the porosities in the mandibular acrylic denture bases processed by heat and microwave polymerization techniques, using two different brands of commercially available denture base resins. MATERIALS & METHODS Two brands of heat activated denture base resins, DPI plain and Acralyn H cross linked denture base resins designed for conven...

2016
Karin Hermana Neppelenbroek Vanessa Migliorini Urban Denise Gusmão de Oliveira Vinícius Carvalho Porto Hercules Jorge Almilhatti Nara Hellen Campanha

BACKGROUND Detachment of denture acrylic resin artificial teeth from denture base resin is one of the most common problems presented by denture wearers. PURPOSE This study investigated the shear bond strength (SBS) and fracture type of bonding interface of two commercial acrylic teeth (Vipi Dent Plus e Biolux) to two denture base resins (Vipi Cril e Lucitone 550) after immersion in potentiall...

Journal: :Dental update 2012
Luke J Rickman Pavinee Padipatvuthikul Julian D Satterthwaite

UNLABELLED Provision of partial and complete dentures constructed from resin is commonplace and a satisfactory outcome requires the consideration of the properties of the resin, the oral tissues and prosthodontic principles. This second of a two-part series examines the advantages and disadvantages of flexible nylon denture base resins, which have found popularity for the provision of partial d...

2016
Ayşegül KÖROĞLU Onur ŞAHİN Işın KÜRKÇÜOĞLU Doğu Ömür DEDE Tonguç ÖZDEMİR Baki HAZER

Objective The aim of the present study was to evaluate the mechanical and thermal characteristics of two denture base acrylic resins containing silver nanoparticles (AgNPs). Material and Methods Two different acrylic denture base resins (heat-polymerized and microwave polymerized) containing 0.3, 0.8 and 1.6 wt% AgNPs were evaluated for flexural strength, elastic modulus and impact strength. ...

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