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The Influence of different fabrication and impression techniques on the marginal adaptation of lithium disilicate crowns : a comparative in vitro study
Joint Authors
Sad Allah, Shadha
al-Azzawi, Abd al-Karim J.
Source
Journal of Baghdad College of Dentistry
Issue
Vol. 29, Issue 4 (31 Dec. 2017), pp.20-26, 7 p.
Publisher
University of Baghdad College of Dentistry
Publication Date
2017-12-31
Country of Publication
Iraq
No. of Pages
7
Main Subjects
Abstract EN
The longevity of any prosthesis depends on the materials from which it was fabricated, that is why, defects in the material properties may reduce the service life of prosthesis and necessitate its replacement.
The aim of this study was to evaluate the effect of adding different concentrations of Polyamide-6 (Nylon-6) on the tear and tensile strength of A-2186 RTV silicone elastomer.
Materials and Methods: 80 samples were fabricated by the addition of 0%, 1%, 3% and 5% by weight PA-6 micro-particles powder to A-2186 platinum RTV silicone elastomer.
The study samples were divided into four (4) groups, each group containing 20 samples.
One control group was prepared without PA-6 micro particles and three experimental groups were prepared with different percentage of PA-6 micro particles (1%, 3%, and 5%) by weight.
Each group was further subdivided into 2 groups according to the conducted tests, i.e.
tear and tensile strength tests (n=10).
The data were analyzed with a descriptive statistical analysis, one-way ANOVA, post-hoc LSD test.
Results: The mean value of tear and tensile strength of 1% PA-6 reinforcement group increased significantly when compared to control group on the contrast to the same values of 3% and 5% PA-6 reinforcement groups which were decreased significantly.
Conclusion: the 1% PA-6 reinforcement improved tear as well as tensile strength among all other percentages (0%, 3% and 5%).
American Psychological Association (APA)
Sad Allah, Shadha& al-Azzawi, Abd al-Karim J.. 2017. The Influence of different fabrication and impression techniques on the marginal adaptation of lithium disilicate crowns : a comparative in vitro study. Journal of Baghdad College of Dentistry،Vol. 29, no. 4, pp.20-26.
https://search.emarefa.net/detail/BIM-795249
Modern Language Association (MLA)
Sad Allah, Shadha& al-Azzawi, Abd al-Karim J.. The Influence of different fabrication and impression techniques on the marginal adaptation of lithium disilicate crowns : a comparative in vitro study. Journal of Baghdad College of Dentistry Vol. 29, no. 4 (Dec. 2017), pp.20-26.
https://search.emarefa.net/detail/BIM-795249
American Medical Association (AMA)
Sad Allah, Shadha& al-Azzawi, Abd al-Karim J.. The Influence of different fabrication and impression techniques on the marginal adaptation of lithium disilicate crowns : a comparative in vitro study. Journal of Baghdad College of Dentistry. 2017. Vol. 29, no. 4, pp.20-26.
https://search.emarefa.net/detail/BIM-795249
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 25-26
Record ID
BIM-795249