Acoustic emission analysis of the effect of simulated pulpal pressure and cavity type on the tooth-composite interfacial de-bonding

Ryan Jin Young Kim, Nak Sam Choi, Jack Ferracane, In Bog Lee

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Objective The aim of this study was to evaluate the influence of in vitro pulpal pressure and cavity type on the tooth-composite bonding interface by means of acoustic emission (AE) analysis. Methods Classes I and II cavities on extracted third molars were prepared and assigned to four groups of seven teeth each: (1) direct composite restoration without simulated pulpal pressure (SPP) in class I cavity, (2) direct composite restoration with SPP in class I cavity, (3) direct composite restoration without SPP in class II cavity, (4) direct composite restoration with SPP in class II cavity. The teeth were restored with Filtek Z250 composite and Adper Scotchbond Multi-Purpose adhesive system (3M ESPE, St. Paul, MN, USA). AE events were recorded for 2000 s during light-curing. Groups 2 and 4 were subjected to 20 cm H2O hydrostatic pressure throughout the procedures. The data were analyzed with two-way ANOVA. After the AE test, teeth were sectioned longitudinally in mesio-distal direction, the tooth-composite interface was examined using SEM. Results SPP in Groups 2 (4.57 ± 1.40) and 4 (3.43 ± 1.13) yielded significantly higher AE events number than those of Groups 1 (3.43 ± 1.51) and 3 (1.71 ± 0.95) where the SPP was not applied (p <0.05). The number of AE events of class I cavity in Groups 1 and 2 were significantly higher than those of class II cavity in Groups 3 and 4 (p <0.05). SEM examination showed that all groups had intact enamel-composite interface, while micro-gaps were observed at the dentin-composite interface, mainly at the pulpal floor of the cavity. The class I cavities with SPP in Group 2 showed wider gaps more frequently than class II cavities without SPP in Group 3. Significance The SPP and class I cavity with high C-factor triggered more AE events, confirming its negative impact on the bonding interface.

Original languageEnglish (US)
Pages (from-to)876-883
Number of pages8
JournalDental Materials
Volume30
Issue number8
DOIs
StatePublished - 2014

Fingerprint

Acoustic emissions
Acoustics
Tooth
Pressure
Composite materials
Restoration
Scanning electron microscopy
Hydrostatic Pressure
Third Molar
Enamels
Hydrostatic pressure
Dentin
Dental Enamel
Analysis of variance (ANOVA)
Adhesives
Curing
Analysis of Variance
Light

Keywords

  • Acoustic emission analysis
  • Composite
  • Interfacial debonding
  • Simulated pulpal pressure

ASJC Scopus subject areas

  • Dentistry(all)
  • Materials Science(all)
  • Mechanics of Materials

Cite this

Acoustic emission analysis of the effect of simulated pulpal pressure and cavity type on the tooth-composite interfacial de-bonding. / Kim, Ryan Jin Young; Choi, Nak Sam; Ferracane, Jack; Lee, In Bog.

In: Dental Materials, Vol. 30, No. 8, 2014, p. 876-883.

Research output: Contribution to journalArticle

@article{111e36a03e7b46c9be95f026a27bbc2d,
title = "Acoustic emission analysis of the effect of simulated pulpal pressure and cavity type on the tooth-composite interfacial de-bonding",
abstract = "Objective The aim of this study was to evaluate the influence of in vitro pulpal pressure and cavity type on the tooth-composite bonding interface by means of acoustic emission (AE) analysis. Methods Classes I and II cavities on extracted third molars were prepared and assigned to four groups of seven teeth each: (1) direct composite restoration without simulated pulpal pressure (SPP) in class I cavity, (2) direct composite restoration with SPP in class I cavity, (3) direct composite restoration without SPP in class II cavity, (4) direct composite restoration with SPP in class II cavity. The teeth were restored with Filtek Z250 composite and Adper Scotchbond Multi-Purpose adhesive system (3M ESPE, St. Paul, MN, USA). AE events were recorded for 2000 s during light-curing. Groups 2 and 4 were subjected to 20 cm H2O hydrostatic pressure throughout the procedures. The data were analyzed with two-way ANOVA. After the AE test, teeth were sectioned longitudinally in mesio-distal direction, the tooth-composite interface was examined using SEM. Results SPP in Groups 2 (4.57 ± 1.40) and 4 (3.43 ± 1.13) yielded significantly higher AE events number than those of Groups 1 (3.43 ± 1.51) and 3 (1.71 ± 0.95) where the SPP was not applied (p <0.05). The number of AE events of class I cavity in Groups 1 and 2 were significantly higher than those of class II cavity in Groups 3 and 4 (p <0.05). SEM examination showed that all groups had intact enamel-composite interface, while micro-gaps were observed at the dentin-composite interface, mainly at the pulpal floor of the cavity. The class I cavities with SPP in Group 2 showed wider gaps more frequently than class II cavities without SPP in Group 3. Significance The SPP and class I cavity with high C-factor triggered more AE events, confirming its negative impact on the bonding interface.",
keywords = "Acoustic emission analysis, Composite, Interfacial debonding, Simulated pulpal pressure",
author = "Kim, {Ryan Jin Young} and Choi, {Nak Sam} and Jack Ferracane and Lee, {In Bog}",
year = "2014",
doi = "10.1016/j.dental.2014.05.027",
language = "English (US)",
volume = "30",
pages = "876--883",
journal = "Dental Materials",
issn = "0109-5641",
publisher = "Elsevier Science",
number = "8",

}

TY - JOUR

T1 - Acoustic emission analysis of the effect of simulated pulpal pressure and cavity type on the tooth-composite interfacial de-bonding

AU - Kim, Ryan Jin Young

AU - Choi, Nak Sam

AU - Ferracane, Jack

AU - Lee, In Bog

PY - 2014

Y1 - 2014

N2 - Objective The aim of this study was to evaluate the influence of in vitro pulpal pressure and cavity type on the tooth-composite bonding interface by means of acoustic emission (AE) analysis. Methods Classes I and II cavities on extracted third molars were prepared and assigned to four groups of seven teeth each: (1) direct composite restoration without simulated pulpal pressure (SPP) in class I cavity, (2) direct composite restoration with SPP in class I cavity, (3) direct composite restoration without SPP in class II cavity, (4) direct composite restoration with SPP in class II cavity. The teeth were restored with Filtek Z250 composite and Adper Scotchbond Multi-Purpose adhesive system (3M ESPE, St. Paul, MN, USA). AE events were recorded for 2000 s during light-curing. Groups 2 and 4 were subjected to 20 cm H2O hydrostatic pressure throughout the procedures. The data were analyzed with two-way ANOVA. After the AE test, teeth were sectioned longitudinally in mesio-distal direction, the tooth-composite interface was examined using SEM. Results SPP in Groups 2 (4.57 ± 1.40) and 4 (3.43 ± 1.13) yielded significantly higher AE events number than those of Groups 1 (3.43 ± 1.51) and 3 (1.71 ± 0.95) where the SPP was not applied (p <0.05). The number of AE events of class I cavity in Groups 1 and 2 were significantly higher than those of class II cavity in Groups 3 and 4 (p <0.05). SEM examination showed that all groups had intact enamel-composite interface, while micro-gaps were observed at the dentin-composite interface, mainly at the pulpal floor of the cavity. The class I cavities with SPP in Group 2 showed wider gaps more frequently than class II cavities without SPP in Group 3. Significance The SPP and class I cavity with high C-factor triggered more AE events, confirming its negative impact on the bonding interface.

AB - Objective The aim of this study was to evaluate the influence of in vitro pulpal pressure and cavity type on the tooth-composite bonding interface by means of acoustic emission (AE) analysis. Methods Classes I and II cavities on extracted third molars were prepared and assigned to four groups of seven teeth each: (1) direct composite restoration without simulated pulpal pressure (SPP) in class I cavity, (2) direct composite restoration with SPP in class I cavity, (3) direct composite restoration without SPP in class II cavity, (4) direct composite restoration with SPP in class II cavity. The teeth were restored with Filtek Z250 composite and Adper Scotchbond Multi-Purpose adhesive system (3M ESPE, St. Paul, MN, USA). AE events were recorded for 2000 s during light-curing. Groups 2 and 4 were subjected to 20 cm H2O hydrostatic pressure throughout the procedures. The data were analyzed with two-way ANOVA. After the AE test, teeth were sectioned longitudinally in mesio-distal direction, the tooth-composite interface was examined using SEM. Results SPP in Groups 2 (4.57 ± 1.40) and 4 (3.43 ± 1.13) yielded significantly higher AE events number than those of Groups 1 (3.43 ± 1.51) and 3 (1.71 ± 0.95) where the SPP was not applied (p <0.05). The number of AE events of class I cavity in Groups 1 and 2 were significantly higher than those of class II cavity in Groups 3 and 4 (p <0.05). SEM examination showed that all groups had intact enamel-composite interface, while micro-gaps were observed at the dentin-composite interface, mainly at the pulpal floor of the cavity. The class I cavities with SPP in Group 2 showed wider gaps more frequently than class II cavities without SPP in Group 3. Significance The SPP and class I cavity with high C-factor triggered more AE events, confirming its negative impact on the bonding interface.

KW - Acoustic emission analysis

KW - Composite

KW - Interfacial debonding

KW - Simulated pulpal pressure

UR - http://www.scopus.com/inward/record.url?scp=84905089359&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84905089359&partnerID=8YFLogxK

U2 - 10.1016/j.dental.2014.05.027

DO - 10.1016/j.dental.2014.05.027

M3 - Article

C2 - 24938925

AN - SCOPUS:84905089359

VL - 30

SP - 876

EP - 883

JO - Dental Materials

JF - Dental Materials

SN - 0109-5641

IS - 8

ER -