In Vitro Study of Transverse Strength of Fiber Reinforced Composites
Objective: Reinforcement with fiber is an effective method for considerable improvement in flexural properties of indirect composite resin restorations. The aim of this in-vitro study was to compare the transverse strength of composite resin bars reinforced with preimpregnated and non-impregnated fi...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Tehran University of Medical Sciences
2011-09-01
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| Series: | Frontiers in Dentistry |
| Subjects: | |
| Online Access: | https://jdt.tums.ac.ir/index.php/jdt/article/view/250 |
| _version_ | 1811260310097494016 |
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| author | R. Mosharraf Z. Hashemi S. Torkan |
| author_facet | R. Mosharraf Z. Hashemi S. Torkan |
| author_sort | R. Mosharraf |
| collection | DOAJ |
| description | Objective: Reinforcement with fiber is an effective method for considerable improvement
in flexural properties of indirect composite resin restorations. The aim of this in-vitro
study was to compare the transverse strength of composite resin bars reinforced with preimpregnated
and non-impregnated fibers.
Materials and Methods: Thirty six bar type composite resin specimens (3×2×25 mm)
were constructed in three groups. The first group was the control group (C) without any
fiber reinforcement. The specimens in the second group (P) were reinforced with preimpregnated
fibers and the third group (N) with non-impregnated fibers. These specimens
were tested by the three-point bending method to measure primary transverse strength.
Data were statistically analyzed with one way ANOVA and Tukey's tests.
Results: There was a significant difference among the mean primary transverse strength in
the three groups (P<0.001). The post-hoc (Tukey) test showed that there was a significant
difference between the pre-impregnated and control groups in their primary transverse
strength (P<0.001). Regarding deflection, there was also a significant difference among
the three groups (P=0.001). There were significant differences among the mean deflection
of the control group and two other groups (PC&N<.001 and PC&P=.004), but there was no
significant difference between the non- and pre-impregnated groups (PN&P=.813).
Conclusion: Within the limitations of this study, it was concluded that reinforcement with
fiber considerably increased the transverse strength of composite resin specimens, but impregnation
of the fiber used implemented no significant difference in the transverse
strength of composite resin samples. |
| first_indexed | 2024-04-12T18:44:37Z |
| format | Article |
| id | doaj.art-abceda3718784ea6aaa915d0dc293793 |
| institution | Directory Open Access Journal |
| issn | 2676-296X |
| language | English |
| last_indexed | 2024-04-12T18:44:37Z |
| publishDate | 2011-09-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Frontiers in Dentistry |
| spelling | doaj.art-abceda3718784ea6aaa915d0dc2937932022-12-22T03:20:39ZengTehran University of Medical SciencesFrontiers in Dentistry2676-296X2011-09-0183In Vitro Study of Transverse Strength of Fiber Reinforced Composites R. Mosharraf0 Z. Hashemi1 S. Torkan2Associate Professor of Department of Prosthodontics, Member of Torabinejad Dental Research Center, SDentist, Private Practice, Isfahan, IranDentist, Post Graduate Student, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Objective: Reinforcement with fiber is an effective method for considerable improvement in flexural properties of indirect composite resin restorations. The aim of this in-vitro study was to compare the transverse strength of composite resin bars reinforced with preimpregnated and non-impregnated fibers. Materials and Methods: Thirty six bar type composite resin specimens (3×2×25 mm) were constructed in three groups. The first group was the control group (C) without any fiber reinforcement. The specimens in the second group (P) were reinforced with preimpregnated fibers and the third group (N) with non-impregnated fibers. These specimens were tested by the three-point bending method to measure primary transverse strength. Data were statistically analyzed with one way ANOVA and Tukey's tests. Results: There was a significant difference among the mean primary transverse strength in the three groups (P<0.001). The post-hoc (Tukey) test showed that there was a significant difference between the pre-impregnated and control groups in their primary transverse strength (P<0.001). Regarding deflection, there was also a significant difference among the three groups (P=0.001). There were significant differences among the mean deflection of the control group and two other groups (PC&N<.001 and PC&P=.004), but there was no significant difference between the non- and pre-impregnated groups (PN&P=.813). Conclusion: Within the limitations of this study, it was concluded that reinforcement with fiber considerably increased the transverse strength of composite resin specimens, but impregnation of the fiber used implemented no significant difference in the transverse strength of composite resin samples.https://jdt.tums.ac.ir/index.php/jdt/article/view/250Fiber Reinforced CompositesPre-Impregnated FibersNon-Impregnated FibersTransverse StrengthDeflection |
| spellingShingle | R. Mosharraf Z. Hashemi S. Torkan In Vitro Study of Transverse Strength of Fiber Reinforced Composites Frontiers in Dentistry Fiber Reinforced Composites Pre-Impregnated Fibers Non-Impregnated Fibers Transverse Strength Deflection |
| title | In Vitro Study of Transverse Strength of Fiber Reinforced Composites |
| title_full | In Vitro Study of Transverse Strength of Fiber Reinforced Composites |
| title_fullStr | In Vitro Study of Transverse Strength of Fiber Reinforced Composites |
| title_full_unstemmed | In Vitro Study of Transverse Strength of Fiber Reinforced Composites |
| title_short | In Vitro Study of Transverse Strength of Fiber Reinforced Composites |
| title_sort | in vitro study of transverse strength of fiber reinforced composites |
| topic | Fiber Reinforced Composites Pre-Impregnated Fibers Non-Impregnated Fibers Transverse Strength Deflection |
| url | https://jdt.tums.ac.ir/index.php/jdt/article/view/250 |
| work_keys_str_mv | AT rmosharraf invitrostudyoftransversestrengthoffiberreinforcedcomposites AT zhashemi invitrostudyoftransversestrengthoffiberreinforcedcomposites AT storkan invitrostudyoftransversestrengthoffiberreinforcedcomposites |