Cuspal flexure, depth-of-cure, and bond integrity of bulk-fill composites

Thuydung Do, Brent Church, Crisnicaw Veríssimo, Steven P. Hackmyer, Daranee Versluis, James Simon, Antheunis Versluis

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Purpose: Evaluate cuspal flexure caused by polymerization shrinkage stress, bond integrity, and depth-of-cure of bulk-fill composites. Methods: Twenty-eight extracted permanent molars were mounted in stainless steel rings. Slot-shaped Class II mesio-occlusal-distal preparations (four mm deep) were restored with Filtek Supreme Ultra (control; two two-mm increments) and bulk-fill composites (Tetric EvoCeram, Venus, Filtek Bulk Fill). The teeth were digitized using a 3D scanner before and after restoration. Before- and after-restoration scans were aligned, and cuspal flexure was calculated. Bond integrity along occlusal interfaces was assessed by dye penetration and measured after overnight immersion in basic fuchsin dye and cross-sectioning. Depth-of-cure was determined on the cross-sections using Vickers hardness. Statistical analysis was performed with one-way analysis of variance. Results: All composites caused inward cuspal flexure (10.4 to 13.6 pm). No statistical difference in flexure was found among the composites (P=.07). No significant difference in microhardness at any restoration depths was found for any composite (35<P<.99). Dye penetration showed comparable bonding along occlusal interfaces for the tested composites. Conclusions: Bulk-fill composites cured all the way through four-mm restoration depths. Cuspal flexure, caused by polymerization shrinkage, and bond integrity were not different between teeth restored with the bulk-fill and conventional incrementally placed restorative composites.

Original languageEnglish (US)
Pages (from-to)468-473
Number of pages6
JournalPediatric dentistry
Volume36
Issue number7
StatePublished - Nov 1 2014

Fingerprint

Coloring Agents
Polymerization
Tooth
Venus
Stainless Steel
Hardness
Immersion
Analysis of Variance
Tetric EvoCeram
Filtek Supreme Ultra
basic fuchsin

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

Cuspal flexure, depth-of-cure, and bond integrity of bulk-fill composites. / Do, Thuydung; Church, Brent; Veríssimo, Crisnicaw; Hackmyer, Steven P.; Versluis, Daranee; Simon, James; Versluis, Antheunis.

In: Pediatric dentistry, Vol. 36, No. 7, 01.11.2014, p. 468-473.

Research output: Contribution to journalArticle

Do, T, Church, B, Veríssimo, C, Hackmyer, SP, Versluis, D, Simon, J & Versluis, A 2014, 'Cuspal flexure, depth-of-cure, and bond integrity of bulk-fill composites', Pediatric dentistry, vol. 36, no. 7, pp. 468-473.
Do T, Church B, Veríssimo C, Hackmyer SP, Versluis D, Simon J et al. Cuspal flexure, depth-of-cure, and bond integrity of bulk-fill composites. Pediatric dentistry. 2014 Nov 1;36(7):468-473.
Do, Thuydung ; Church, Brent ; Veríssimo, Crisnicaw ; Hackmyer, Steven P. ; Versluis, Daranee ; Simon, James ; Versluis, Antheunis. / Cuspal flexure, depth-of-cure, and bond integrity of bulk-fill composites. In: Pediatric dentistry. 2014 ; Vol. 36, No. 7. pp. 468-473.
@article{a3eb7855afb84c32aaeeeccc256725d8,
title = "Cuspal flexure, depth-of-cure, and bond integrity of bulk-fill composites",
abstract = "Purpose: Evaluate cuspal flexure caused by polymerization shrinkage stress, bond integrity, and depth-of-cure of bulk-fill composites. Methods: Twenty-eight extracted permanent molars were mounted in stainless steel rings. Slot-shaped Class II mesio-occlusal-distal preparations (four mm deep) were restored with Filtek Supreme Ultra (control; two two-mm increments) and bulk-fill composites (Tetric EvoCeram, Venus, Filtek Bulk Fill). The teeth were digitized using a 3D scanner before and after restoration. Before- and after-restoration scans were aligned, and cuspal flexure was calculated. Bond integrity along occlusal interfaces was assessed by dye penetration and measured after overnight immersion in basic fuchsin dye and cross-sectioning. Depth-of-cure was determined on the cross-sections using Vickers hardness. Statistical analysis was performed with one-way analysis of variance. Results: All composites caused inward cuspal flexure (10.4 to 13.6 pm). No statistical difference in flexure was found among the composites (P=.07). No significant difference in microhardness at any restoration depths was found for any composite (35<P<.99). Dye penetration showed comparable bonding along occlusal interfaces for the tested composites. Conclusions: Bulk-fill composites cured all the way through four-mm restoration depths. Cuspal flexure, caused by polymerization shrinkage, and bond integrity were not different between teeth restored with the bulk-fill and conventional incrementally placed restorative composites.",
author = "Thuydung Do and Brent Church and Crisnicaw Ver{\'i}ssimo and Hackmyer, {Steven P.} and Daranee Versluis and James Simon and Antheunis Versluis",
year = "2014",
month = "11",
day = "1",
language = "English (US)",
volume = "36",
pages = "468--473",
journal = "Pediatric Dentistry",
issn = "0164-1263",
publisher = "American Academy of Pediatric Dentistry",
number = "7",

}

TY - JOUR

T1 - Cuspal flexure, depth-of-cure, and bond integrity of bulk-fill composites

AU - Do, Thuydung

AU - Church, Brent

AU - Veríssimo, Crisnicaw

AU - Hackmyer, Steven P.

AU - Versluis, Daranee

AU - Simon, James

AU - Versluis, Antheunis

PY - 2014/11/1

Y1 - 2014/11/1

N2 - Purpose: Evaluate cuspal flexure caused by polymerization shrinkage stress, bond integrity, and depth-of-cure of bulk-fill composites. Methods: Twenty-eight extracted permanent molars were mounted in stainless steel rings. Slot-shaped Class II mesio-occlusal-distal preparations (four mm deep) were restored with Filtek Supreme Ultra (control; two two-mm increments) and bulk-fill composites (Tetric EvoCeram, Venus, Filtek Bulk Fill). The teeth were digitized using a 3D scanner before and after restoration. Before- and after-restoration scans were aligned, and cuspal flexure was calculated. Bond integrity along occlusal interfaces was assessed by dye penetration and measured after overnight immersion in basic fuchsin dye and cross-sectioning. Depth-of-cure was determined on the cross-sections using Vickers hardness. Statistical analysis was performed with one-way analysis of variance. Results: All composites caused inward cuspal flexure (10.4 to 13.6 pm). No statistical difference in flexure was found among the composites (P=.07). No significant difference in microhardness at any restoration depths was found for any composite (35<P<.99). Dye penetration showed comparable bonding along occlusal interfaces for the tested composites. Conclusions: Bulk-fill composites cured all the way through four-mm restoration depths. Cuspal flexure, caused by polymerization shrinkage, and bond integrity were not different between teeth restored with the bulk-fill and conventional incrementally placed restorative composites.

AB - Purpose: Evaluate cuspal flexure caused by polymerization shrinkage stress, bond integrity, and depth-of-cure of bulk-fill composites. Methods: Twenty-eight extracted permanent molars were mounted in stainless steel rings. Slot-shaped Class II mesio-occlusal-distal preparations (four mm deep) were restored with Filtek Supreme Ultra (control; two two-mm increments) and bulk-fill composites (Tetric EvoCeram, Venus, Filtek Bulk Fill). The teeth were digitized using a 3D scanner before and after restoration. Before- and after-restoration scans were aligned, and cuspal flexure was calculated. Bond integrity along occlusal interfaces was assessed by dye penetration and measured after overnight immersion in basic fuchsin dye and cross-sectioning. Depth-of-cure was determined on the cross-sections using Vickers hardness. Statistical analysis was performed with one-way analysis of variance. Results: All composites caused inward cuspal flexure (10.4 to 13.6 pm). No statistical difference in flexure was found among the composites (P=.07). No significant difference in microhardness at any restoration depths was found for any composite (35<P<.99). Dye penetration showed comparable bonding along occlusal interfaces for the tested composites. Conclusions: Bulk-fill composites cured all the way through four-mm restoration depths. Cuspal flexure, caused by polymerization shrinkage, and bond integrity were not different between teeth restored with the bulk-fill and conventional incrementally placed restorative composites.

UR - http://www.scopus.com/inward/record.url?scp=84949457073&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84949457073&partnerID=8YFLogxK

M3 - Article

VL - 36

SP - 468

EP - 473

JO - Pediatric Dentistry

JF - Pediatric Dentistry

SN - 0164-1263

IS - 7

ER -