Assessment of cuspal deflection and volumetric shrinkage of different bulk fill composites using non-contact phase microscopy and micro-computed tomography

Martin Prager, Mark Pierce, Pablo J. Atria, Camila Sampaio, Eduardo Cáceres, Mark Wolff, Marcelo Giannini, Ronaldo Hirata

Research output: Contribution to journalArticle

Abstract

The understanding of cuspal deflection and volumetric shrinkage of resin composites is necessary to assess and improve the placement techniques of resin-based materials. The aim of this study was to investigate the cuspal deflection and its relationship with volumetric polymerization shrinkage of different bulk-fill resin composites. The investigation was conducted using non-contact phase microscopy and micro-computed tomography. Thirty custom-milled aluminum blocks were fabricated for microscopy analysis and thirty-six tooth models with standardized Class I cavities were used for micro-computed tomography analysis. Results showed that high-viscosity composites present higher cuspal deflection compared to bulk-fill composites. The filler loading of resin composites seems to have an effect on cusp deflection, since the higher the filler content percentage, the higher the cusp deflection. On the other hand, it seems to have an opposite effect on volumetric shrinkage, since higher filler loadings produced lower volumetric shrinkage percentages.

Original languageEnglish (US)
Pages (from-to)393-399
Number of pages7
JournalDental Materials Journal
Volume37
Issue number3
DOIs
StatePublished - Jan 1 2018

Fingerprint

Composite Resins
Tomography
Microscopy
Microscopic examination
Fillers
Resins
Composite materials
Aluminum
Viscosity
Polymerization
Tooth

Keywords

  • Composite
  • Computed-tomography
  • Cuspal
  • Light-curing
  • Shrinkage

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

Cite this

Assessment of cuspal deflection and volumetric shrinkage of different bulk fill composites using non-contact phase microscopy and micro-computed tomography. / Prager, Martin; Pierce, Mark; Atria, Pablo J.; Sampaio, Camila; Cáceres, Eduardo; Wolff, Mark; Giannini, Marcelo; Hirata, Ronaldo.

In: Dental Materials Journal, Vol. 37, No. 3, 01.01.2018, p. 393-399.

Research output: Contribution to journalArticle

Prager, Martin ; Pierce, Mark ; Atria, Pablo J. ; Sampaio, Camila ; Cáceres, Eduardo ; Wolff, Mark ; Giannini, Marcelo ; Hirata, Ronaldo. / Assessment of cuspal deflection and volumetric shrinkage of different bulk fill composites using non-contact phase microscopy and micro-computed tomography. In: Dental Materials Journal. 2018 ; Vol. 37, No. 3. pp. 393-399.
@article{0e6bf75627b14bbab9ff5d0c99ff829f,
title = "Assessment of cuspal deflection and volumetric shrinkage of different bulk fill composites using non-contact phase microscopy and micro-computed tomography",
abstract = "The understanding of cuspal deflection and volumetric shrinkage of resin composites is necessary to assess and improve the placement techniques of resin-based materials. The aim of this study was to investigate the cuspal deflection and its relationship with volumetric polymerization shrinkage of different bulk-fill resin composites. The investigation was conducted using non-contact phase microscopy and micro-computed tomography. Thirty custom-milled aluminum blocks were fabricated for microscopy analysis and thirty-six tooth models with standardized Class I cavities were used for micro-computed tomography analysis. Results showed that high-viscosity composites present higher cuspal deflection compared to bulk-fill composites. The filler loading of resin composites seems to have an effect on cusp deflection, since the higher the filler content percentage, the higher the cusp deflection. On the other hand, it seems to have an opposite effect on volumetric shrinkage, since higher filler loadings produced lower volumetric shrinkage percentages.",
keywords = "Composite, Computed-tomography, Cuspal, Light-curing, Shrinkage",
author = "Martin Prager and Mark Pierce and Atria, {Pablo J.} and Camila Sampaio and Eduardo C{\'a}ceres and Mark Wolff and Marcelo Giannini and Ronaldo Hirata",
year = "2018",
month = "1",
day = "1",
doi = "10.4012/dmj.2017-136",
language = "English (US)",
volume = "37",
pages = "393--399",
journal = "Dental Materials Journal",
issn = "0287-4547",
publisher = "Japanese Society for Dental Materials and Devices",
number = "3",

}

TY - JOUR

T1 - Assessment of cuspal deflection and volumetric shrinkage of different bulk fill composites using non-contact phase microscopy and micro-computed tomography

AU - Prager, Martin

AU - Pierce, Mark

AU - Atria, Pablo J.

AU - Sampaio, Camila

AU - Cáceres, Eduardo

AU - Wolff, Mark

AU - Giannini, Marcelo

AU - Hirata, Ronaldo

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The understanding of cuspal deflection and volumetric shrinkage of resin composites is necessary to assess and improve the placement techniques of resin-based materials. The aim of this study was to investigate the cuspal deflection and its relationship with volumetric polymerization shrinkage of different bulk-fill resin composites. The investigation was conducted using non-contact phase microscopy and micro-computed tomography. Thirty custom-milled aluminum blocks were fabricated for microscopy analysis and thirty-six tooth models with standardized Class I cavities were used for micro-computed tomography analysis. Results showed that high-viscosity composites present higher cuspal deflection compared to bulk-fill composites. The filler loading of resin composites seems to have an effect on cusp deflection, since the higher the filler content percentage, the higher the cusp deflection. On the other hand, it seems to have an opposite effect on volumetric shrinkage, since higher filler loadings produced lower volumetric shrinkage percentages.

AB - The understanding of cuspal deflection and volumetric shrinkage of resin composites is necessary to assess and improve the placement techniques of resin-based materials. The aim of this study was to investigate the cuspal deflection and its relationship with volumetric polymerization shrinkage of different bulk-fill resin composites. The investigation was conducted using non-contact phase microscopy and micro-computed tomography. Thirty custom-milled aluminum blocks were fabricated for microscopy analysis and thirty-six tooth models with standardized Class I cavities were used for micro-computed tomography analysis. Results showed that high-viscosity composites present higher cuspal deflection compared to bulk-fill composites. The filler loading of resin composites seems to have an effect on cusp deflection, since the higher the filler content percentage, the higher the cusp deflection. On the other hand, it seems to have an opposite effect on volumetric shrinkage, since higher filler loadings produced lower volumetric shrinkage percentages.

KW - Composite

KW - Computed-tomography

KW - Cuspal

KW - Light-curing

KW - Shrinkage

UR - http://www.scopus.com/inward/record.url?scp=85048263727&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048263727&partnerID=8YFLogxK

U2 - 10.4012/dmj.2017-136

DO - 10.4012/dmj.2017-136

M3 - Article

C2 - 29375091

AN - SCOPUS:85048263727

VL - 37

SP - 393

EP - 399

JO - Dental Materials Journal

JF - Dental Materials Journal

SN - 0287-4547

IS - 3

ER -