Immediate versus water-storage performance of Class V flowable composite restoratives

Masao Irie, Kenji Hatanaka, Kazuomi Suzuki, David C. Watts

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Objectives: The aims of this investigation were to clarify the effects of 24 h water-storage and finishing time on mechanical properties and marginal adaptation to a Class V cavity of eight modern flowable resin-composites. Methods: Eight flowable composites, plus two controls (one microfilled and one hybrid composite), were investigated with specimen sub-groups (n = 10) for each property measured. The principal series of experiments was conducted in model Class V cavities with interfacial polishing either immediately (3 min) after setting or after 24 h water-storage. After the finishing procedure, each tooth was sectioned in a buccolingual direction through the center of the restoration, and the presence or absence of marginal-gaps was measured (and then summed for each cavity) at 14 points (each 0.5 mm apart) along the cavity restoration interface (n = 10 per group; total points measured = 140). The shear bond-strengths to enamel and to dentin, and flexural strengths and moduli data were also measured at 3 min and after 24 h water-storage. Results: For all flowable composites, polished immediately after setting, 14-30 summed gaps were observed (controls: 64 and 42). For specimens polished after 24 h, a significantly (p <0.05) reduced number of 8-17 summed gaps occurred for only 3 flowable composites; whereas for 5 flowable composites there were non-significantly-different (p > 0.05) numbers (11-17) of summed gaps (controls: 28 and 22). After 24 h storage, shear bond-strengths to enamel and to dentin, flexural strengths and moduli increased highly significantly (p <0.001) for all materials, except Silux Plus. Significance: A post-cure interval of 24 h resulted in enhanced mechanical and adhesive properties of flowable dental composites. In a minority of cases there was also a reduced incidence of marginal-gap formation. However the latter effect may be partly attributed to 24 h delayed polishing, even though such a delay is not usual clinical practice.

Original languageEnglish
Pages (from-to)875-883
Number of pages9
JournalDental Materials
Volume22
Issue number9
DOIs
Publication statusPublished - Sep 2006

Fingerprint

Enamels
Polishing
Shear Strength
Bending strength
Restoration
Water
Composite materials
Dentin
Dental Enamel
Dental composites
Tooth
Composite Resins
Bond strength (materials)
Adhesives
Mechanical properties
Resins
flowable hybrid composite
Incidence
Experiments
Silux Plus

Keywords

  • Bond-strength
  • Class V restoration
  • Flexural
  • Flowable composite
  • Gap-formation

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Immediate versus water-storage performance of Class V flowable composite restoratives. / Irie, Masao; Hatanaka, Kenji; Suzuki, Kazuomi; Watts, David C.

In: Dental Materials, Vol. 22, No. 9, 09.2006, p. 875-883.

Research output: Contribution to journalArticle

Irie, Masao ; Hatanaka, Kenji ; Suzuki, Kazuomi ; Watts, David C. / Immediate versus water-storage performance of Class V flowable composite restoratives. In: Dental Materials. 2006 ; Vol. 22, No. 9. pp. 875-883.
@article{69b344dba69244f4b4aea28ecef74dc4,
title = "Immediate versus water-storage performance of Class V flowable composite restoratives",
abstract = "Objectives: The aims of this investigation were to clarify the effects of 24 h water-storage and finishing time on mechanical properties and marginal adaptation to a Class V cavity of eight modern flowable resin-composites. Methods: Eight flowable composites, plus two controls (one microfilled and one hybrid composite), were investigated with specimen sub-groups (n = 10) for each property measured. The principal series of experiments was conducted in model Class V cavities with interfacial polishing either immediately (3 min) after setting or after 24 h water-storage. After the finishing procedure, each tooth was sectioned in a buccolingual direction through the center of the restoration, and the presence or absence of marginal-gaps was measured (and then summed for each cavity) at 14 points (each 0.5 mm apart) along the cavity restoration interface (n = 10 per group; total points measured = 140). The shear bond-strengths to enamel and to dentin, and flexural strengths and moduli data were also measured at 3 min and after 24 h water-storage. Results: For all flowable composites, polished immediately after setting, 14-30 summed gaps were observed (controls: 64 and 42). For specimens polished after 24 h, a significantly (p <0.05) reduced number of 8-17 summed gaps occurred for only 3 flowable composites; whereas for 5 flowable composites there were non-significantly-different (p > 0.05) numbers (11-17) of summed gaps (controls: 28 and 22). After 24 h storage, shear bond-strengths to enamel and to dentin, flexural strengths and moduli increased highly significantly (p <0.001) for all materials, except Silux Plus. Significance: A post-cure interval of 24 h resulted in enhanced mechanical and adhesive properties of flowable dental composites. In a minority of cases there was also a reduced incidence of marginal-gap formation. However the latter effect may be partly attributed to 24 h delayed polishing, even though such a delay is not usual clinical practice.",
keywords = "Bond-strength, Class V restoration, Flexural, Flowable composite, Gap-formation",
author = "Masao Irie and Kenji Hatanaka and Kazuomi Suzuki and Watts, {David C.}",
year = "2006",
month = "9",
doi = "10.1016/j.dental.2006.06.001",
language = "English",
volume = "22",
pages = "875--883",
journal = "Dental Materials",
issn = "0109-5641",
publisher = "Elsevier Science",
number = "9",

}

TY - JOUR

T1 - Immediate versus water-storage performance of Class V flowable composite restoratives

AU - Irie, Masao

AU - Hatanaka, Kenji

AU - Suzuki, Kazuomi

AU - Watts, David C.

PY - 2006/9

Y1 - 2006/9

N2 - Objectives: The aims of this investigation were to clarify the effects of 24 h water-storage and finishing time on mechanical properties and marginal adaptation to a Class V cavity of eight modern flowable resin-composites. Methods: Eight flowable composites, plus two controls (one microfilled and one hybrid composite), were investigated with specimen sub-groups (n = 10) for each property measured. The principal series of experiments was conducted in model Class V cavities with interfacial polishing either immediately (3 min) after setting or after 24 h water-storage. After the finishing procedure, each tooth was sectioned in a buccolingual direction through the center of the restoration, and the presence or absence of marginal-gaps was measured (and then summed for each cavity) at 14 points (each 0.5 mm apart) along the cavity restoration interface (n = 10 per group; total points measured = 140). The shear bond-strengths to enamel and to dentin, and flexural strengths and moduli data were also measured at 3 min and after 24 h water-storage. Results: For all flowable composites, polished immediately after setting, 14-30 summed gaps were observed (controls: 64 and 42). For specimens polished after 24 h, a significantly (p <0.05) reduced number of 8-17 summed gaps occurred for only 3 flowable composites; whereas for 5 flowable composites there were non-significantly-different (p > 0.05) numbers (11-17) of summed gaps (controls: 28 and 22). After 24 h storage, shear bond-strengths to enamel and to dentin, flexural strengths and moduli increased highly significantly (p <0.001) for all materials, except Silux Plus. Significance: A post-cure interval of 24 h resulted in enhanced mechanical and adhesive properties of flowable dental composites. In a minority of cases there was also a reduced incidence of marginal-gap formation. However the latter effect may be partly attributed to 24 h delayed polishing, even though such a delay is not usual clinical practice.

AB - Objectives: The aims of this investigation were to clarify the effects of 24 h water-storage and finishing time on mechanical properties and marginal adaptation to a Class V cavity of eight modern flowable resin-composites. Methods: Eight flowable composites, plus two controls (one microfilled and one hybrid composite), were investigated with specimen sub-groups (n = 10) for each property measured. The principal series of experiments was conducted in model Class V cavities with interfacial polishing either immediately (3 min) after setting or after 24 h water-storage. After the finishing procedure, each tooth was sectioned in a buccolingual direction through the center of the restoration, and the presence or absence of marginal-gaps was measured (and then summed for each cavity) at 14 points (each 0.5 mm apart) along the cavity restoration interface (n = 10 per group; total points measured = 140). The shear bond-strengths to enamel and to dentin, and flexural strengths and moduli data were also measured at 3 min and after 24 h water-storage. Results: For all flowable composites, polished immediately after setting, 14-30 summed gaps were observed (controls: 64 and 42). For specimens polished after 24 h, a significantly (p <0.05) reduced number of 8-17 summed gaps occurred for only 3 flowable composites; whereas for 5 flowable composites there were non-significantly-different (p > 0.05) numbers (11-17) of summed gaps (controls: 28 and 22). After 24 h storage, shear bond-strengths to enamel and to dentin, flexural strengths and moduli increased highly significantly (p <0.001) for all materials, except Silux Plus. Significance: A post-cure interval of 24 h resulted in enhanced mechanical and adhesive properties of flowable dental composites. In a minority of cases there was also a reduced incidence of marginal-gap formation. However the latter effect may be partly attributed to 24 h delayed polishing, even though such a delay is not usual clinical practice.

KW - Bond-strength

KW - Class V restoration

KW - Flexural

KW - Flowable composite

KW - Gap-formation

UR - http://www.scopus.com/inward/record.url?scp=33746644608&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33746644608&partnerID=8YFLogxK

U2 - 10.1016/j.dental.2006.06.001

DO - 10.1016/j.dental.2006.06.001

M3 - Article

C2 - 16837038

AN - SCOPUS:33746644608

VL - 22

SP - 875

EP - 883

JO - Dental Materials

JF - Dental Materials

SN - 0109-5641

IS - 9

ER -