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Effect of modified nanohydroxyapatite fillers addition on some properties of heat cured acrylic denture base materials
Joint Authors
Karadi, Ruaa Hamid
Husayn, Basima M. A.
Source
Journal of Baghdad College of Dentistry
Issue
Vol. 29, Issue 2 (30 Jun. 2017), pp.49-54, 6 p.
Publisher
University of Baghdad College of Dentistry
Publication Date
2017-06-30
Country of Publication
Iraq
No. of Pages
6
Main Subjects
Abstract EN
Background: Poly (methylmethacrylate) is not ideal in every aspect and has disadvantages such as insufficient surface hardness, increase water sorption and poor impact resistance and the latter being the primary cause of fracture of denture base resins.
The aim of this study was to evaluate the effect of addition of silanized nanohydroxyapatite (HA) on some properties of heat cured acrylic denture base material.
Materials and methods: HA nano particles were first silanized with MPS (tri methacryloxypropyletrimethoxy silane coupling agent) then ultrasonicated with methylmethacrylate (monomer) to disperse agglomerated nano particles and mixed with polymer.
2% by wt of HA nano particles was selected as the best concentration that added to the denture base material according to the pilot study.(100) specimens were prepared by conventional water bath processing technique and divided to two groups: 50 specimens for control group or 0% HA and 50 for experimental group or 2% HA then each group was subdivided to five groups with 10 specimens for each test: impact strength, transverse strength, surface hardness, surface roughness, water sorption and water solubility.
Results: highly significant increase in impact strength and surface hardness after addition of 2% HA nano particles but not significant decrease in water sorption whereas solubility was significantly decreased.
Surface roughness was significantly increased as compared with control group but remained within the acceptable limit less than 2m.
HA nanoparticles addition highly decreased the transverse strength value.
Conclusion The addition of 2% HA nano particles considerably improved the impact strength, surface hardness and had positive effect on water sorption and solubility.
Whereas the same concentration tend to highly decreased transverse strength and increase surface roughness.
American Psychological Association (APA)
Karadi, Ruaa Hamid& Husayn, Basima M. A.. 2017. Effect of modified nanohydroxyapatite fillers addition on some properties of heat cured acrylic denture base materials. Journal of Baghdad College of Dentistry،Vol. 29, no. 2, pp.49-54.
https://search.emarefa.net/detail/BIM-792012
Modern Language Association (MLA)
Karadi, Ruaa Hamid& Husayn, Basima M. A.. Effect of modified nanohydroxyapatite fillers addition on some properties of heat cured acrylic denture base materials. Journal of Baghdad College of Dentistry Vol. 29, no. 2 (Jun. 2017), pp.49-54.
https://search.emarefa.net/detail/BIM-792012
American Medical Association (AMA)
Karadi, Ruaa Hamid& Husayn, Basima M. A.. Effect of modified nanohydroxyapatite fillers addition on some properties of heat cured acrylic denture base materials. Journal of Baghdad College of Dentistry. 2017. Vol. 29, no. 2, pp.49-54.
https://search.emarefa.net/detail/BIM-792012
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 53-54
Record ID
BIM-792012