Comparative effect of different polymerization techniques on residual monomer and hardness properties of PMMA-based denture resins

Purpose: The aim of this study was to compare the residual monomer and microhardness of poly(methyl methacrylate) (PMMA)–based denture resins processed by using autoclave and conventional water bath techniques. Methods: To determine the amount of residual methyl methacrylate (MMA) monomer, disk-shaped specimens (n=5) were prepared from 3 different acrylic resins (Meliodent, Paladent and Qc-20). Control groups were polymerized in water bath for 30 minutes at 100°C. The study groups were prepared in an autoclave device for 60°C/30 min followed 130°C/10 min and the other group for 60°C/30 min followed by 130°C/20 min. According to standard calibration curves, ultraviolet spectrophotometry at 230 nm was used to determine the residual monomer. For the Vickers hardness measurements, disk-shaped specimens (n=5) were prepared for each test group. Hardness measurements were performed with a Vickers hardness tester under a 4.91-N press load for a 30 seconds, after immersion in distilled water at 37ºC for 48 hours. The data were analyzed by ANOVA and Tukey HSD test (p<0.05). Results: Autoclave polymerization produced a significant decrease in the amount of residual monomers for all resin groups (p<0.05). This procedure also showed a significant increase in hardness for all resin groups (p<0.05). For the 3 resin groups, no significant differences were found between autoclave polymerization for 10 minutes and for 20 minutes (p>0.05). Conclusions: The autoclave polymerization technique exhibited significantly lower residual monomer content and greater hardness than conventional heat polymerization. © 2014 Società Italiana Biomateriali.

Dergi Adı Journal of Applied Biomaterials and Functional Materials
Dergi Cilt Bilgisi 12
Dergi Sayısı 3
Sayfalar 228 - 233
Yayın Yılı 2014
Eser Adı
[dc.title]
Comparative effect of different polymerization techniques on residual monomer and hardness properties of PMMA-based denture resins
Yazar
[dc.contributor.author]
Ayaz E.A.
Yazar
[dc.contributor.author]
Durkan R.
Yazar
[dc.contributor.author]
Koroglu A.
Yazar
[dc.contributor.author]
Bagis B.
Yayın Yılı
[dc.date.issued]
2014
Yayıncı
[dc.publisher]
Wichtig Publishing Srl
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
Purpose: The aim of this study was to compare the residual monomer and microhardness of poly(methyl methacrylate) (PMMA)–based denture resins processed by using autoclave and conventional water bath techniques. Methods: To determine the amount of residual methyl methacrylate (MMA) monomer, disk-shaped specimens (n=5) were prepared from 3 different acrylic resins (Meliodent, Paladent and Qc-20). Control groups were polymerized in water bath for 30 minutes at 100°C. The study groups were prepared in an autoclave device for 60°C/30 min followed 130°C/10 min and the other group for 60°C/30 min followed by 130°C/20 min. According to standard calibration curves, ultraviolet spectrophotometry at 230 nm was used to determine the residual monomer. For the Vickers hardness measurements, disk-shaped specimens (n=5) were prepared for each test group. Hardness measurements were performed with a Vickers hardness tester under a 4.91-N press load for a 30 seconds, after immersion in distilled water at 37ºC for 48 hours. The data were analyzed by ANOVA and Tukey HSD test (p<0.05). Results: Autoclave polymerization produced a significant decrease in the amount of residual monomers for all resin groups (p<0.05). This procedure also showed a significant increase in hardness for all resin groups (p<0.05). For the 3 resin groups, no significant differences were found between autoclave polymerization for 10 minutes and for 20 minutes (p>0.05). Conclusions: The autoclave polymerization technique exhibited significantly lower residual monomer content and greater hardness than conventional heat polymerization. © 2014 Società Italiana Biomateriali.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Dili
[dc.language.iso]
eng
Konu Başlıkları
[dc.subject]
Autoclave polymerization
Konu Başlıkları
[dc.subject]
Denture base resin
Konu Başlıkları
[dc.subject]
Hardness
Konu Başlıkları
[dc.subject]
PMMA
Konu Başlıkları
[dc.subject]
Residual monomer
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
2280-8000
İlk Sayfa Sayısı
[dc.identifier.startpage]
228
Son Sayfa Sayısı
[dc.identifier.endpage]
233
Dergi Adı
[dc.relation.journal]
Journal of Applied Biomaterials and Functional Materials
Dergi Sayısı
[dc.identifier.issue]
3
Dergi Cilt Bilgisi
[dc.identifier.volume]
12
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.5301/jabfm.5000199
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/4769
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
12
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
10 Şubat 2024 00:15
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groups residual autoclave polymerization hardness monomer significant prepared minutes specimens followed 60°C/30 disk-shaped determine resins amount Vickers measurements conventional distilled monomers analyzed decrease produced Autoclave Results Purpose differences exhibited Biomateriali Italiana Società greater content significantly
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