نتایج جستجو برای: reinforced polyethylene

تعداد نتایج: 74830  

Journal: :Dental materials journal 2012
Ali Riza Tuncdemir Filiz Aykent

Composite resins were reinforced with glass and polyethylene fibers in this study, and the effect of fiber reinforcement on the color change of composite resins was investigated. After accelerated aging, the effect of fiber reinforcement on the color stability of composite resins was also examined. There were three experimental groups (n=12 disks per group): non-fiber-reinforced composite (non-...

2017
Enas Mangoush Eija Säilynoja Roosa Prinssi Lippo Lassila Pekka K. Vallittu Sufyan Garoushi

Background Fiber reinforced composite (FRC) is a promising class of material that gives clinicians alternative treatment options. There are many FRC products available in the market based on either glass or polyethylene fiber type. The aim of this study was to present a comparison between glass and polyethylene fiber reinforced composites based on available literature review. Material and Met...

2013
Zbigniew Raszewski Danuta Nowakowska

Background. Acrylic resins used in restorative dentistry are the most popular denture base material, because they have good optical properties and small solubility in body fluids. However their mechanical properties are limited and therefore acrylic resins require different methods of reinforcement one of which can be application of different kinds of fibers. Objectives. To investigate the effe...

2015
H B Mallikarjuna Murthy Sharaz Shaik Harleen Sachdeva Sumit Khare Satheesh B Haralur K T Roopa

BACKGROUND The impact strength of denture base resin is of great concern and many approaches have been made to strengthen acrylic resin dentures. The objective of this study was to compare the impact strength of the denture base resin with and without reinforcement and to evaluate the impact strength of denture base resin when reinforced with stainless steel mesh, glass fiber, and polyethylene ...

2013
F Sharafeddin AA Alavi Z Talei

STATEMENT OF PROBLEM The flexure of the fiber- reinforced composites (FRC) which can be generally used instead of fixed metal- framework prostheses have been more advocated due to the enormous demands for the conservative and esthetic restoration. The flexure of the fiber should be well-fitted to its covering composite. No study has been reported the comparison of the combination of glass and p...

Journal: :The International journal of prosthodontics 2007
Edno Moacir Piovesan Flávio Fernando Demarco Maximiliano Sérgio Cenci Tatiana Pereira-Cenci

PURPOSE This study aimed to assess the long-term survival rates of polyethylene fiber-reinforced posts and cores used in endodontically treated teeth over a 97-month period. MATERIALS AND METHODS Sixty-nine patients from a private dental office who underwent endodontic treatment with coronoradicular fiber-reinforced restorations were selected and invited for evaluation. All teeth were restore...

2017
Hemalatha Hiremath Sadanand Kulkarni Vishwanath Hiremath Madhavi Kotipalli

OBJECTIVE The objective of this study is to evaluate the fracture resistance of newer restorative materials that could serve as an alternate to crown coverage. MATERIALS AND METHODS Forty extracted human mandibular molar teeth were selected for this study and were divided into four groups (n = 10). All the teeth in the experimental groups (Group 2-4) were subjected to access cavity preparatio...

Journal: :Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics 2009
Sule Bayrak Emine Sen Tunc Nuray Tuloglu

The case report presented here is of a 4-year-old girl with severely decayed maxillary anterior teeth. After root canal treatment, the primary maxillary central and lateral incisors were reinforced using polyethylene fiber-reinforced composite resin short posts and restored using celluloid strip crowns. The technique described here offers a simple and effective method for restoring severely dec...

Journal: :journal of dentistry, tehran university of medical sciences 0
bijan heidari assistant professor, department of prosthodontic dentistry, hamadan university of medical sciences, hamadan, iran farnaz firouz assistant professor, department of prosthodontic dentistry, hamadan university of medical sciences, hamadan, iran alireza izadi assistant professor, department of prosthodontic dentistry, hamadan university of medical sciences, hamadan, iran shahbaz ahmadvand private practice, hamadan, iran pegah radan postgraduate student, department of prosthodontic dentistry, hamadan university of medical sciences, hamadan, iran

o bjectives: heat-polymerized acrylic resin has been the most commonly used denture base material for over 60 years. however, the mechanical strength of acrylic resin is not adequate for long-term clinical performance of dentures. consequently, fracture is a com- mon clinical occurrence, which often occurs in the midline of denture base.this study aimed to evaluate the efficacy of cold cure and...

Journal: :Journal of the Japan Society for Composite Materials 1991

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