Bond strength of restorative materials to hydroxyapatite inserts and dimensional changes of insert-containing restorations during polymerization

Lezaja, Maja; Veljović, Djordje; Manojlović, Dragica; Milošević, Miloš; Mitrović, Nenad; Janaćković, Djordje; Miletić, Vesna

doi:10.1016/j.dental.2014.11.017

Cited by 17 publications

(23 citation statements)

References 37 publications

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“…Approximately 0.18 g of powder was used for preparation of each specimen. The inserts were finally sintered at 1200°C for 2 hours at a heating rate of 20°C/min . Biodentine was prepared according to manufacturer's instructions by adding five drops of liquid to the powder in the capsule followed by 30 seconds mixing in an automated mixing device (Technomix, Linea TAC, S.r.l, Montegrosso d'Asti, Italy).…”

Section: Methodsmentioning

confidence: 99%

“…Experimental HAP inserts were originally developed to reduce the amount of composite and polymerization shrinkage of the posterior restoration. 18 Yttrium-stabilized zirconia was added to improve the mechanical properties of HAP inserts after sintering. 19 However, the clear white color of such inserts necessitates a capping composite layer to achieve high esthetic results.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental HAP inserts were originally developed to reduce the amount of composite and polymerization shrinkage of the posterior restoration . Yttrium‐stabilized zirconia was added to improve the mechanical properties of HAP inserts after sintering .…”

Section: Introductionmentioning

confidence: 99%

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Color stability of bulk‐fill and universal composite restorations with dissimilar dentin replacement materials

Miletić

Marjanovic

Veljović

et al. 2019

J Esthet Restor Dent

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Objective To determine color changes in bulk‐fill composite and universal composite restorations with dissimilar dentin replacement materials in extracted teeth after staining in red wine. Materials and Methods Cylindrical, 4 mm deep, class I cavities were prepared in 140 human molars. Bottom 2 mm was restored with Biodentine (Septodont), everX posterior (GC) or experimental HAP inserts. Each dentin replacement material was covered with a 2‐mm layer of a universal composite Filtek Z250 or Z550 (3M ESPE) or Gradia Posterior (GC). Groups combining top composite layer and the underlying dentin replacement were designated as “composite_dentin replacement.” Filtek Bulk Fill (3M ESPE) and Tetric EvoCeram Bulk Fill (Ivoclar Vivadent) were placed as a single 4‐mm layer. Color measurements were performed using Vita Easyshade 4.0 (Vita Zahnfabrik) initially and after 48‐hours storage in red wine at 37°C. Results Color differences (ΔEoo) ranged between 2.1 ± 0.7 (Z250_HAP) and 7.8 ± 1.1 (Z550_everX). EverX resulted in higher ΔEoo of the overlying composite than HAP (P < .001) and Biodentine (P = .006). Generally, ΔEoo was affected more by decreasing lightness (ΔL′) than changes in chroma (ΔC′). Conclusions EverX resulted in higher ΔEoo of the restoration than Biodentine and experimental HAP after staining in red wine. No significant differences in ΔEoo may be expected in different composites with the same underlying dentin replacement material. The same was generally true for bulk‐fill and universal composites. Clinical Significance Similar extent of color changes may be expected in bulk‐fill and universal composites. Highly translucent everX might exhibit greater color differences irrespective of the capping composite than non‐translucent materials. Clinicians have a wider choice of composite materials to cover a particular dentin replacement material, for example, everX or Biodentine, as similar color differences may be expected in various overlying composite brands.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Color stability of bulk‐fill and universal composite restorations with dissimilar dentin replacement materials

Miletić

Marjanovic

Veljović

et al. 2019

J Esthet Restor Dent

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“…The images were then analyzed using specialized software (Aramis 6.2.0) to determine von Mises strain. Von Mises strain was chosen as it represents an index gained from the combination of principal strain at any given point at which strain occurring on the X-, Y-, and Z-axis will cause failure [19]. Analysis of the strain fields was done using sections and stage points created by software.…”

Section: Methodsmentioning

confidence: 99%

Strain determination of self-adhesive resin cement using 3D digital image correlation method

et al. 2018

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Introduction/ObjectiveIn an attempt to simplify dental procedures, a new group of resin cements, self-adhesive resin cements (SARCs), have been introduced. Performance of SARCs can widely vary. One of the main reasons of adhesion failure is polymerization shrinkage. The aim of this study was to determine, evaluate, and measure strain field of self-adhesive dual cure resin cement during polymerization in self-cure mode using 3D digital image correlation (DIC) method. Methods The self-adhesive Maxcem Elite (Kerr, Orange, CA, USA) cement was tested in five cylindrical samples (5 mm in diameter and 2 mm in thickness) prepared by filling plastic ring-type molds. Digital images were recorded immediately after sample preparation. Results Non-uniform strain distribution was found in resin cement with higher strain values along the periphery (up to 15%) and lower strain values in central parts (around 4%) of each sample. Conclusion It can be concluded that DIC is a powerful tool for full-field strain measurements in material characterization.

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“…Also, numerical methods enable results of full covered stress-strain field that can be easily verified by the data obtained from experiment. This 3D DIC method has high accuracy (up to 1 μm) and it has been used in variety of cases so far: different material testing, structure testing, model verification, fracture mechanism [24][25][26][27][28][29][30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical stress and strain analysis of the boiler reversing chamber tube plate

et al. 2022

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Boilers are one of the most used units for both heat generation plants and industry systems. Their operation is subjected to different working loads and maintenance requirements. Exploitation experience points out critical boiler zones where failures and break downs typically occur. This paper analyzes critical zones in hot water fire-tube boiler. Experimental procedure was performed on the model of this type of boilers and its critical element. The tube plate of hot water boiler was identified as the most critical one. Experimental analysis and numerical model verification were performed using Aramis system based on 3D Digital Image Correlation method. Numerical analysis was done in Ansys Software Package and verification of results was done based on measurements obtained by strain gauges and local measurements performed by the Aramis system. Stress-strain analysis indicates the critical zones of boiler tube plate. The character of change parameters such as strain and stress occurring in the critical zones can be verified both by experimental and numerical data. The paper presents a novel approach in experimental and numerical analyses that can be conducted in similar units and used for existing unit optimization, as well as for new product testing on different loads and provide opportunity for further development and improvement for practical industrial application.

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Bond strength of restorative materials to hydroxyapatite inserts and dimensional changes of insert-containing restorations during polymerization

Cited by 17 publications

References 37 publications

Color stability of bulk‐fill and universal composite restorations with dissimilar dentin replacement materials

Color stability of bulk‐fill and universal composite restorations with dissimilar dentin replacement materials

Strain determination of self-adhesive resin cement using 3D digital image correlation method

Experimental and numerical stress and strain analysis of the boiler reversing chamber tube plate

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