In Vitro Comparison of the Effect of Nano-Hybrid Composite Resin and Amalgam on the Adhesion of Streptococcus Mutans

Objectives: Considering the increasing use of vital bleaching procedures and the increased application of newly introduced resin-based materials for tooth restoration, this study was designed to evaluate the effect of 15% carbamide peroxide gel on the flexural strength of three resin-based restorative materials. Materials and Methods: Three different types of restorative materials namely Beautifil II giomer, Cention N, and Z250 micro-hybrid composite resin were evaluated in this in vitro, experimental study. Twenty-four bar-shaped specimens were prepared from each restorative material, totaling 72 specimens, and were randomly assigned to two subgroups with and without bleaching procedure (n=12). In the bleaching subgroups, 15% carbamide peroxide gel was applied on the specimen surface 8 h a day for 14 days. The flexural strength of the specimens was then measured. Two-way ANOVA was used to compare the flexural strength of the specimens. Results: There was a significant reduction in the flexural strength of materials following exposure to the bleaching agent (P<0.05). The flexural strength was significantly higher in the groups that did not undergo bleaching. However, the mean flexural strength of the restorative materials was not significantly different (P=0.12). Conclusion: The flexural strength of Beautifil II giomer, Cention N, and Z250 micro-hybrid composite resin could be compromised subsequent to bleaching with 15% carbamide peroxide gel. The three resin-based restorative materials exhibited similar flexural strength values irrespective of the use or no use of 15% carbamide peroxide gel.

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In-vitro comparison of the effect of different bonding strategies on the micro-shear bond strength of a silorane-based composite resin to dentin

Dental Research Journal ◽

10.4103/1735-3327.178197 ◽

2016 ◽

Vol 13 (2) ◽

pp. 124

Author(s):

Vajihosadat Mortazavi ◽

Pouran Samimi ◽

Vahid Alizadeh ◽

Kamyar Fathpour ◽

Hamid Mazaheri

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Composite Resin ◽

In Vitro Comparison

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In vitro comparison of shear bond strength of a flowable composite resin and a single-component glass-ionomer to three different pulp-capping agents

Dental and Medical Problems ◽

10.17219/dmp/109233 ◽

2019 ◽

Vol 56 (3) ◽

pp. 239-244

Author(s):

Maryam Zare Jahromi ◽

Reza Roozbeh ◽

Paridokht Zarean ◽

Parichehr Zarean ◽

Parvin Mirzakoochaki Broujeni

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Composite Resin ◽

Single Component ◽

Glass Ionomer ◽

Capping Agents ◽

Pulp Capping ◽

Flowable Composite ◽

In Vitro Comparison

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Streptococcus mutans-induced secondary caries adjacent to glass ionomer cement, composite resin and amalgam restorations in vitro

Brazilian Oral Research ◽

10.1590/s1806-83242007000400015 ◽

2007 ◽

Vol 21 (4) ◽

pp. 368-374 ◽

Cited By ~ 21

Author(s):

Adriana Gama-Teixeira ◽

Maria Regina Lorenzeti Simionato ◽

Silvia Nagib Elian ◽

Maria Angela Pita Sobral ◽

Maria Aparecida Alves de Cerqueira Luz

Keyword(s):

Streptococcus Mutans ◽

Composite Resin ◽

Glass Ionomer Cement ◽

Cement Composite ◽

Glass Ionomer ◽

Secondary Caries ◽

Restorative Materials ◽

Intact Surface ◽

Ionomer Cement

The aim of this study was to define, in vitro, the potential to inhibit secondary caries of restorative materials currently used in dental practice. Standard cavities were prepared on the buccal and lingual surfaces of fifty extracted human third molars. The teeth were randomly divided into five groups, each one restored with one of the following materials: glass ionomer cement (GIC); amalgam; light-cured composite resin; ion-releasing composite; and light-cured, fluoride-containing composite resin. The teeth were thermocycled, sterilized with gamma irradiation, exposed to a cariogenic challenge using a bacterial system using Streptococcus mutans, and then prepared for microscopic observation. The following parameters were measured in each lesion formed: extension, depth, and caries inhibition area. The outer lesions developed showed an intact surface layer and had a rectangular shape. Wall lesions were not observed inside the cavities. After Analysis of Variance and Component of Variance Models Analysis, it was observed that the GIC group had the smallest lesions and the greatest number of caries inhibition areas. The lesions developed around Amalgam and Ariston pHc restorations had an intermediate size and the largest lesions were observed around Z-100 and Heliomolar restorations. It may be concluded that the restorative materials GIC, amalgam and ion-releasing composites may reduce secondary caries formation.

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In vitro Comparison of the Antimicrobial Activity of Ten Herbal Extracts Against Streptococcus mutans with Chlorhexidine

Journal of Applied Sciences ◽

10.3923/jas.2011.878.882 ◽

2011 ◽

Vol 11 (5) ◽

pp. 878-882 ◽

Cited By ~ 3

Author(s):

Z. Dalirsani ◽

M. Aghazadeh ◽

M. Adibpour ◽

M. Amirchaghm ◽

A. Pakfetrat ◽

...

Keyword(s):

Antimicrobial Activity ◽

Streptococcus Mutans ◽

Herbal Extracts ◽

In Vitro Comparison

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Composite resin bond strength to primary dentin prepared with ER, CR: YSSG laser

Journal of Clinical Pediatric Dentistry ◽

10.17796/jcpd.30.1.el385u211tnu2574 ◽

2006 ◽

Vol 30 (1) ◽

pp. 45-50 ◽

Cited By ~ 16

Author(s):

Eric Sung ◽

Torin Chenard ◽

Angelo Caputo ◽

Michael Amodeo ◽

Evelyn Chung ◽

...

Keyword(s):

Bond Strength ◽

Hybrid Composite ◽

Shear Bond Strength ◽

Composite Resin ◽

In Vitro Study ◽

Vitro Study ◽

Bonding Agent ◽

Bond Strengths

This in vitro study evaluated the shear bond strength of a hybrid composite resin bonded to primary dentin prepared with an Er,Cr:YSGG hydrokinetic laser compared to conventional bur prepared primary dentin. The results suggest that primary dentin surfaces treated with the Er,Cr:YSGG laser, with or without etching, may provide comparable or increased composite resin bond strengths depending upon bonding agent used.

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