Flexural Strength of Provisional Crown and Fixed Partial Denture Resins

Autor:	Marwah Radi Alnasser, Abrar Almarzouq, Danh Abdullah Almalki, Naif Abdullah Abu Rass, Maryam Alhaddad, Anfal Abdullah Almohammed Saleh, Mohsen Shinpir Mohsen, Sawsan Badr Sehaqi, Dhay Abdullah a. al TawiL, Maha Salem Baaboud
Rok vydání:	2017
Předmět:	business.industry medicine.medical_treatment Composite number Glass fiber Statistical difference Polyethylene Methacrylate Crown (dentistry) chemistry.chemical_compound stomatognathic system chemistry Flexural strength medicine Fiber Composite material business
Zdroj:	The Egyptian Journal of Hospital Medicine. 68:1003-1009
ISSN:	2090-7125 1687-2002
DOI:	10.12816/0038217
Popis:	Purpose: The purpose of this study was `to appraise the fracture strength of provisional crown and fixed partial denture resins with an in vitro test system. Materials and Methods: Bar-type specimens were fabricated according to American National Standards Institute/American Dental Association specification number 27. Reinforcement materials; polyethylene fiber and glass fiber are compared. Provisional crown-bridge materials are autopolymerising Poly Ethyl Metacrylate (PEMA), autopolymerising Poly Methyl Metacrylate (PMMA), bis-acryl composite resin and light cured composite resin). A total of 150 specimens are arranged for the flexural strength test. The specimens are divided into 5 groups according to the type of resin used (Dentalon Plus, Tetric Ceram, Charisma, Protemp 3, TAB 2000) and then every group was distributed into 3 subgroups rendering to the type of fiber reinforcement (Construct, Fiber-splint ML). Unreinforcement specimens functioned as the control. Specimens were fractured in a universal testing instrument until the point of rupture. Mean flexural strengths were calculated in MPa. Comparisons were completed with analysis of variance and then Duncan's multiple range tests. Results: Mean flexural strengths ranged from 63.45 to 397.8 MPa. There are statistical difference between the groups (Fiber-splint ML, Construct and control). Conclusion: Flexural strengths were material- rather than classification precise. Several, but not all, bis-acryl resins validated expressively superior flexural strength over traditional methacrylate resins. There was significant difference between Fiber-splint ML, Construct and control group.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::65ec4d50c5fe059933fef7cb62ecf232 https://doi.org/10.12816/0038217 Zobrazit plný text záznamu Plný text ve formátu PDF