نتایج جستجو برای: polymethyl methacrylate pmma

تعداد نتایج: 12682  

2017
Zhidong Cao Dianming Jiang Ling Yan Jun Wu

Antibiotic-loaded carriers were developed to fill cavities and locally deliver antibiotics following implantation. However, the most commonly used antibiotic carrier, polymethyl methacrylate (PMMA), has many disadvantages including that it does not promote bone regeneration or conduction. Vancomycin-loaded bone-like hydroxyapatite/poly amino acid (V-BHA/PAA) was successfully fabricated by a hom...

Journal: :Advances in Polymer Technology 2023

Polymethyl methacrylate (PMMA) bone cement is being used to fill voids that are created due vertebral compression fractures. It also a grouting medium in orthopedic joint replacement surgeries as they possess fast primary fixation the bone. Considering properties and vitro bioactivity of essential for cemented hip knee surgeries. In this study, commercial Simplex P (SPBC) modified with carboxyl...

Journal: :TELKOMNIKA Telecommunication Computing Electronics and Control 2022

Surface coverings using nanomaterials of silica nanoparticles and poly (methyl methacrylate) – abbreviated “PMMA-silica nanomaterials” are introduced to the Y 2 O S:Eu 3+ phosphor through four distinct approaches. The objective is enhance phosphorescence prolonged sustainability. Using immerse-daubing along with sol-gel approach (Stober way), it possible have phosphors covered relatively-monodi...

2014
Fahimeh Hamedi-Rad Tahereh Ghaffari Farzad Rezaii Ali Ramazani

OBJECTIVE Polymethyl methacrylate (PMMA), widely used as a prosthodontic base, has many disadvantages, including a high thermal expansion coefficient and low thermal conductivity, a low elasticity coefficient, low impact strength and low resistance to fatigue. This study aimed to make an in vitro comparison of the thermal conductivity, compressive strength, and tensile strength of the acrylic b...

2015
Hong-Jiang Jiang Jin Xu Zhi-Ye Qiu Xin-Long Ma Zi-Qiang Zhang Xun-Xiang Tan Yun Cui Fu-Zhai Cui

Polymethyl methacrylate (PMMA) bone cement is a commonly used bone adhesive and filling material in percutaneous vertebroplasty and percutaneous kyphoplasty surgeries. However, PMMA bone cements have been reported to cause some severe complications, such as secondary fracture of adjacent vertebral bodies, and loosening or even dislodgement of the set PMMA bone cement, due to the over-high elast...

Journal: :The Journal of prosthetic dentistry 2014
Russell Wang Junliang Tao Bill Yu Liming Dai

STATEMENT OF PROBLEM Most fractures of dentures occur during function, primarily because of the flexural fatigue of denture resins. PURPOSE The purpose of this study was to evaluate a polymethyl methacrylate denture base material modified with multiwalled carbon nanotubes in terms of fatigue resistance, flexural strength, and resilience. MATERIAL AND METHODS Denture resin specimens were fab...

Journal: : 2022

Objective: The present study aims to investigate the mechanical properties of base materials [polymethyl methacrylate (PMMA)/polyether ether ketone (PEEK)] fabricated with computeraided design/computer-aided manufacturing (CAD/CAM) and heatpolymerized conventional materials. Material Methods: Two different polymers milled CAD/CAM (Yamahachi PMMA Disk Juvora Dental PEEK) heat-polymerized acrylic...

Journal: :journal of dental research, dental clinics, dental prospects 0
tahereh ghaffari fahimeh hamedirad baharak ezzatiparsa

background and aims. polymethyl methacrylate, pmma, is widely used in prosthodontics for fabrication of removable prostheses. this study was undertaken to investigate the effect of adding silver nanoparticles (agnps) to pmma at 2% and 0.2% concentrations on compressive and tensile strengths of pmma. materials and methods. the silver nanoparticles were mixed with heat-cured acrylic resin in an a...

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