Effect of Using Bulk fill Composites on Fracture Resistance of Maxillary Premolars with MOD Cavities

BACKGROUND AND OBJECTIVE: Bulk fill composites are an innovative class of dental resin composite materials, developed to simplify the restoration procedures, and are preferred to conventional composites if they have good mechanical properties and marginal seal. The aim of this study was to evaluate...

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Autores principales:	N Shadman, R Hoseinifar, M Ghafar Poor, D Dortaj
Formato:	article
Lenguaje:	EN FA
Publicado:	Babol University of Medical Sciences 2020
Materias:	composite resins tooth fracture polymerization. Medicine R Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/d35ba1f4595b41ab98906cef0b1e37c9
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spelling	oai:doaj.org-article:d35ba1f4595b41ab98906cef0b1e37c92021-11-09T10:15:54ZEffect of Using Bulk fill Composites on Fracture Resistance of Maxillary Premolars with MOD Cavities1561-41072251-7170https://doaj.org/article/d35ba1f4595b41ab98906cef0b1e37c92020-03-01T00:00:00Zhttp://jbums.org/article-1-9063-en.htmlhttps://doaj.org/toc/1561-4107https://doaj.org/toc/2251-7170BACKGROUND AND OBJECTIVE: Bulk fill composites are an innovative class of dental resin composite materials, developed to simplify the restoration procedures, and are preferred to conventional composites if they have good mechanical properties and marginal seal. The aim of this study was to evaluate the fracture resistance of premolar teeth with mesio-occlusodistal (MOD) cavities restored with bulk and conventional composites. METHODS: In this experimental in-vitro study, 40 sound maxillary premolar teeth were randomly divided into five groups: Group I: Positive control, intact teeth. In the remaining four groups, MOD cavities were prepared. Group II: Negative control, unrestored teeth. In other groups, cavities were restored as follows; Group III: (X-tra fil, bulk filling with 4mm-thick increment), Group IV: (X-tra base, bulk filling+Grandio, incremental filling) Group V: (Grandio, incremental filling with 2mm-thick increment). The restored teeth were stored in distilled water for 24 hours at 37oC and thermocycled (500 cycles). Specimens were subjected to a compressive load until fracture, and the fracture resistance was recorded in Newton. FINDINGS: The highest fracture resistance values were obtained in group I (1150±507 N) and the lowest in group II (85±62.51 N), which was significantly lower than other groups (p=0.001). The fracture resistance of bulk fill composites and conventional composite did not differ significantly with intact teeth. CONCLUSION: The restoration of teeth with moderate MOD cavity size using bulk fill composites can restore the lost tooth strength to a level comparable to intact teeth and similar to conventional composite.N ShadmanR HoseinifarM Ghafar PoorD DortajBabol University of Medical Sciencesarticlecomposite resinstooth fracturepolymerization.MedicineRMedicine (General)R5-920ENFAMajallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Bābul, Vol 22, Iss 1, Pp 215-221 (2020)
institution	DOAJ
collection	DOAJ
language	EN FA
topic	composite resins tooth fracture polymerization. Medicine R Medicine (General) R5-920
spellingShingle	composite resins tooth fracture polymerization. Medicine R Medicine (General) R5-920 N Shadman R Hoseinifar M Ghafar Poor D Dortaj Effect of Using Bulk fill Composites on Fracture Resistance of Maxillary Premolars with MOD Cavities
description	BACKGROUND AND OBJECTIVE: Bulk fill composites are an innovative class of dental resin composite materials, developed to simplify the restoration procedures, and are preferred to conventional composites if they have good mechanical properties and marginal seal. The aim of this study was to evaluate the fracture resistance of premolar teeth with mesio-occlusodistal (MOD) cavities restored with bulk and conventional composites. METHODS: In this experimental in-vitro study, 40 sound maxillary premolar teeth were randomly divided into five groups: Group I: Positive control, intact teeth. In the remaining four groups, MOD cavities were prepared. Group II: Negative control, unrestored teeth. In other groups, cavities were restored as follows; Group III: (X-tra fil, bulk filling with 4mm-thick increment), Group IV: (X-tra base, bulk filling+Grandio, incremental filling) Group V: (Grandio, incremental filling with 2mm-thick increment). The restored teeth were stored in distilled water for 24 hours at 37oC and thermocycled (500 cycles). Specimens were subjected to a compressive load until fracture, and the fracture resistance was recorded in Newton. FINDINGS: The highest fracture resistance values were obtained in group I (1150±507 N) and the lowest in group II (85±62.51 N), which was significantly lower than other groups (p=0.001). The fracture resistance of bulk fill composites and conventional composite did not differ significantly with intact teeth. CONCLUSION: The restoration of teeth with moderate MOD cavity size using bulk fill composites can restore the lost tooth strength to a level comparable to intact teeth and similar to conventional composite.
format	article
author	N Shadman R Hoseinifar M Ghafar Poor D Dortaj
author_facet	N Shadman R Hoseinifar M Ghafar Poor D Dortaj
author_sort	N Shadman
title	Effect of Using Bulk fill Composites on Fracture Resistance of Maxillary Premolars with MOD Cavities
title_short	Effect of Using Bulk fill Composites on Fracture Resistance of Maxillary Premolars with MOD Cavities
title_full	Effect of Using Bulk fill Composites on Fracture Resistance of Maxillary Premolars with MOD Cavities
title_fullStr	Effect of Using Bulk fill Composites on Fracture Resistance of Maxillary Premolars with MOD Cavities
title_full_unstemmed	Effect of Using Bulk fill Composites on Fracture Resistance of Maxillary Premolars with MOD Cavities
title_sort	effect of using bulk fill composites on fracture resistance of maxillary premolars with mod cavities
publisher	Babol University of Medical Sciences
publishDate	2020
url	https://doaj.org/article/d35ba1f4595b41ab98906cef0b1e37c9
work_keys_str_mv	AT nshadman effectofusingbulkfillcompositesonfractureresistanceofmaxillarypremolarswithmodcavities AT rhoseinifar effectofusingbulkfillcompositesonfractureresistanceofmaxillarypremolarswithmodcavities AT mghafarpoor effectofusingbulkfillcompositesonfractureresistanceofmaxillarypremolarswithmodcavities AT ddortaj effectofusingbulkfillcompositesonfractureresistanceofmaxillarypremolarswithmodcavities
_version_	1718441152591429632

Effect of Using Bulk fill Composites on Fracture Resistance of Maxillary Premolars with MOD Cavities

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