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Comparison of color stability and fracture resistance of two temporary fiber-reinforced fixed partial denture materials
BACKGROUND: Temporary crown and bridge materials have to fulfill a couple of important functions within the timeframe between tooth preparations until luting of the definitive restoration. The aim of the current study was to evaluate the color stability and fracture resistance of two fiber-reinforce...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Wolters Kluwer - Medknow
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6474173/ https://www.ncbi.nlm.nih.gov/pubmed/31040875 |
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author | Mosharraf, Ramin Givehchian, Pirouz Ansaripour, Farzin |
author_facet | Mosharraf, Ramin Givehchian, Pirouz Ansaripour, Farzin |
author_sort | Mosharraf, Ramin |
collection | PubMed |
description | BACKGROUND: Temporary crown and bridge materials have to fulfill a couple of important functions within the timeframe between tooth preparations until luting of the definitive restoration. The aim of the current study was to evaluate the color stability and fracture resistance of two fiber-reinforced provisional fixed partial denture (FPD) materials. MATERIALS AND METHODS: In this in vitro study Using a plexiglass mold, 96 bar-shaped specimens (4 mm × 2 mm × 20 mm) were fabricated and divided into four groups (n = 24): nonreinforced composite (NRC) resin, glass fiber-reinforced composite resin (RC), nonreinforced polymethylmethacrylate (PMMA), and glass fiber-reinforced PMMA. Values of CIEL*a*b* were recorded for all the samples. Then, the samples were immersed in coffee, chlorhexidine mouthrinse, and distilled water. After 1 day and 1 and 4 weeks, CIEL*a*b* values were recorded again and color differences (ΔE) were calculated. All the specimens immersed in distilled water were then subjected to force to measure their fracture resistance. Data were analyzed with one-way ANOVA, honestly significant difference Tukey tests, and paired t-test (α = 0.05). RESULTS: The NRC group, immersed in coffee for 1 month, exhibited the highest ΔE (17.1 ± 0.69) and the lowest ΔE belonged to the RC group immersed in water for 1 day. The RC group, immersed in water, exhibited the highest fracture resistance. CONCLUSION: Coffee is considered as one of the most important factors affecting color changes in provisional FPDs, either in composite resins or in PMMAs. Fracture resistance of both composite resin and PMMA FPDs revealed no significant differences between the groups; however, there were significant differences between the nonreinforced and fiber-reinforced FPDs in both groups. |
format | Online Article Text |
id | pubmed-6474173 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Wolters Kluwer - Medknow |
record_format | MEDLINE/PubMed |
spelling | pubmed-64741732019-05-01 Comparison of color stability and fracture resistance of two temporary fiber-reinforced fixed partial denture materials Mosharraf, Ramin Givehchian, Pirouz Ansaripour, Farzin Dent Res J (Isfahan) Original Article BACKGROUND: Temporary crown and bridge materials have to fulfill a couple of important functions within the timeframe between tooth preparations until luting of the definitive restoration. The aim of the current study was to evaluate the color stability and fracture resistance of two fiber-reinforced provisional fixed partial denture (FPD) materials. MATERIALS AND METHODS: In this in vitro study Using a plexiglass mold, 96 bar-shaped specimens (4 mm × 2 mm × 20 mm) were fabricated and divided into four groups (n = 24): nonreinforced composite (NRC) resin, glass fiber-reinforced composite resin (RC), nonreinforced polymethylmethacrylate (PMMA), and glass fiber-reinforced PMMA. Values of CIEL*a*b* were recorded for all the samples. Then, the samples were immersed in coffee, chlorhexidine mouthrinse, and distilled water. After 1 day and 1 and 4 weeks, CIEL*a*b* values were recorded again and color differences (ΔE) were calculated. All the specimens immersed in distilled water were then subjected to force to measure their fracture resistance. Data were analyzed with one-way ANOVA, honestly significant difference Tukey tests, and paired t-test (α = 0.05). RESULTS: The NRC group, immersed in coffee for 1 month, exhibited the highest ΔE (17.1 ± 0.69) and the lowest ΔE belonged to the RC group immersed in water for 1 day. The RC group, immersed in water, exhibited the highest fracture resistance. CONCLUSION: Coffee is considered as one of the most important factors affecting color changes in provisional FPDs, either in composite resins or in PMMAs. Fracture resistance of both composite resin and PMMA FPDs revealed no significant differences between the groups; however, there were significant differences between the nonreinforced and fiber-reinforced FPDs in both groups. Wolters Kluwer - Medknow 2019 /pmc/articles/PMC6474173/ /pubmed/31040875 Text en Copyright: © 2019 Dental Research Journal http://creativecommons.org/licenses/by-nc-sa/4.0 This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms. |
spellingShingle | Original Article Mosharraf, Ramin Givehchian, Pirouz Ansaripour, Farzin Comparison of color stability and fracture resistance of two temporary fiber-reinforced fixed partial denture materials |
title | Comparison of color stability and fracture resistance of two temporary fiber-reinforced fixed partial denture materials |
title_full | Comparison of color stability and fracture resistance of two temporary fiber-reinforced fixed partial denture materials |
title_fullStr | Comparison of color stability and fracture resistance of two temporary fiber-reinforced fixed partial denture materials |
title_full_unstemmed | Comparison of color stability and fracture resistance of two temporary fiber-reinforced fixed partial denture materials |
title_short | Comparison of color stability and fracture resistance of two temporary fiber-reinforced fixed partial denture materials |
title_sort | comparison of color stability and fracture resistance of two temporary fiber-reinforced fixed partial denture materials |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6474173/ https://www.ncbi.nlm.nih.gov/pubmed/31040875 |
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