Internal void formation on dental composites using ultra-sonic devices

Hirata, Ronaldo; Cáceres, Eduardo; Pacheco, Rafael Rocha; Romero, Mario F.; Giannini, Marcelo; Coelho, Paulo G.

doi:10.1016/j.dental.2015.08.014

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“…The mean application time of composite material with the SonicFill 2 system was 39 seconds versus 3:34 minutes with conventional composite. [20,21] As shown in the results of the current study, sectional matrix showed the highest PCT values with a statistical significant difference (p<0.05) in relation to the other groups. This was in agreement with the previous studies who found that the use of sectional matrix band with separation ring leads to a very predictable way of achieving ideal proximal contacts.…”

Section: Discussionsupporting

confidence: 53%

Influence of Metal Versus Transparent Matrices on Proximal Contact Tightness of Class Ii Bulk-Fill Composite Restorations

El-Shamy

2018

Egyptian Dental Journal

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Purpose: This study investigated the effect of metal versus transparent matrix systems on proximal contact tightness (PCT) of class II bulk-fill composite resin restorations.Methods: 80 Ivorine teeth with standardized MO cavity preparations were randomly divided into 4 equal groups (n=20). Group1; sectional metal matrix, group2; pre-contoured circumferential metal matrix in a Tofflemire retainer, group3; conventional metal matrix in a Tofflemire retainer, and group4; Blue Cure-Thru transparent contoured matrix band. All matrices were combined with a separation ring and secured with wooden wedges. Cavity preparations were restored with bulkfill composite resin; SonicFill 2 with the corresponding bonding system following manufacturer's instructions. Composite material cured for 20s using Elipar S10 light curing unit. Teeth were restored in a clinically relevant situation using KaVo manikin head. After matrix and wedge removal, proximal contact tightness was measured using the Tooth Pressure Meter. Means were calculated and data were statistically-analyzed using ANOVA and Tukey's test (p<.05).Results: Means and standard deviation for proximal contact measurements were: 7.62 (.52), 4.01 (.74), 4.13 (.4) and 2.74 (.37) for groups 1, 2, 3 and 4 respectively. There was a statistical significant difference among all groups except between group2 and 3. Conclusions:Under the conditions of this test, it can be concluded that: 1. Proper proximal contact tightness for bulk-fill posterior composite restorations could be produced by sectional metal matrix rather than transparent matrix. 2. Pre-contoured circumferential metal matrix produced the same proximal contact tightness as conventional metal matrix when both used with a separation ring.Clinical Relevance Transparent matrices couldn't be recommended for bulk-fill posterior composite restorations rather than metal matrices.(2820)

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Section: Discussionsupporting

confidence: 53%

Influence of Metal Versus Transparent Matrices on Proximal Contact Tightness of Class Ii Bulk-Fill Composite Restorations

El-Shamy

2018

Egyptian Dental Journal

View full text Add to dashboard Cite

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Internal void formation on dental composites using ultra-sonic devices

Cited by 1 publication

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Influence of Metal Versus Transparent Matrices on Proximal Contact Tightness of Class Ii Bulk-Fill Composite Restorations

Influence of Metal Versus Transparent Matrices on Proximal Contact Tightness of Class Ii Bulk-Fill Composite Restorations

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