Internal adaptation of resin composites at two configurations: Influence of polymerization shrinkage and stress

Seung Hoon Han, Alireza Sadr, Junji Tagami, Sungho Park

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Objective This study compared internal adaptation of composites under different C-factors and examined the relationship between internal adaptation and polymerization shrinkage parameters. Methods Cylindrical cavities 3 mm in diameter were prepared in 100 human third molars in two depths: 4 mm high C-factor (H-CF) or 1 mm low C-factor (L-CF). After adhesive application (Clearfil SE One, Kuraray Noritake), the composite was placed in two increments in three subgroups: Filtek Supreme (FS, 3 M ESPE); Charisma Diamond (CD, Heraeus Kulzer); Amelogen Plus (AP, Ultradent); and as a single increment in two subgroups: Tetric EvoCeram Bulk Fill (TB, Ivoclar Vivadent) and Venus Bulk Fill (VB, Heraeus Kulzer). After thermo-mechanical load-cycles, imperfect margin percentage (%IM) was calculated using swept-source optical coherence tomography (SS-OCT) imaging. The relationships between %IM and linear shrinkage (LS) and shrinkage stress, measured under either zero-compliance (PS0) or compliance-allowed (PS) conditions were evaluated. Results The %IM was significantly different between H-CF and L-CF groups. The %IM in H-CF turned out to be as groups CD, FS ≤ TB < AP, VB. The %IM in L-CF showed as groups CD, TB ≤ FS, AP < VB. There were significant correlations between shrinkage parameters and %IM, except between PS0 and %IM in L-CF. Significance Internal adaptation in a high C-factor cavity was inferior to that in a low C-factor cavity for both conventional and bulk-filled composites. Internal adaptation, polymerization shrinkage, and stress were different among composite materials. Polymerization stress under the compliance-allowed condition showed significant correlations with internal adaptations in high and low C-factor cavities.

Original languageEnglish
Pages (from-to)1085-1094
Number of pages10
JournalDental Materials
Volume32
Issue number9
DOIs
Publication statusPublished - 2016 Sep 1

Fingerprint

Composite Resins
Polymerization
Compliance
Resins
Composite materials
Venus
Diamond
Third Molar
Optical Coherence Tomography
Adhesives
Optical tomography
Diamonds
Imaging techniques

All Science Journal Classification (ASJC) codes

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

Cite this

Han, Seung Hoon ; Sadr, Alireza ; Tagami, Junji ; Park, Sungho. / Internal adaptation of resin composites at two configurations : Influence of polymerization shrinkage and stress. In: Dental Materials. 2016 ; Vol. 32, No. 9. pp. 1085-1094.
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abstract = "Objective This study compared internal adaptation of composites under different C-factors and examined the relationship between internal adaptation and polymerization shrinkage parameters. Methods Cylindrical cavities 3 mm in diameter were prepared in 100 human third molars in two depths: 4 mm high C-factor (H-CF) or 1 mm low C-factor (L-CF). After adhesive application (Clearfil SE One, Kuraray Noritake), the composite was placed in two increments in three subgroups: Filtek Supreme (FS, 3 M ESPE); Charisma Diamond (CD, Heraeus Kulzer); Amelogen Plus (AP, Ultradent); and as a single increment in two subgroups: Tetric EvoCeram Bulk Fill (TB, Ivoclar Vivadent) and Venus Bulk Fill (VB, Heraeus Kulzer). After thermo-mechanical load-cycles, imperfect margin percentage ({\%}IM) was calculated using swept-source optical coherence tomography (SS-OCT) imaging. The relationships between {\%}IM and linear shrinkage (LS) and shrinkage stress, measured under either zero-compliance (PS0) or compliance-allowed (PS) conditions were evaluated. Results The {\%}IM was significantly different between H-CF and L-CF groups. The {\%}IM in H-CF turned out to be as groups CD, FS ≤ TB < AP, VB. The {\%}IM in L-CF showed as groups CD, TB ≤ FS, AP < VB. There were significant correlations between shrinkage parameters and {\%}IM, except between PS0 and {\%}IM in L-CF. Significance Internal adaptation in a high C-factor cavity was inferior to that in a low C-factor cavity for both conventional and bulk-filled composites. Internal adaptation, polymerization shrinkage, and stress were different among composite materials. Polymerization stress under the compliance-allowed condition showed significant correlations with internal adaptations in high and low C-factor cavities.",
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Internal adaptation of resin composites at two configurations : Influence of polymerization shrinkage and stress. / Han, Seung Hoon; Sadr, Alireza; Tagami, Junji; Park, Sungho.

In: Dental Materials, Vol. 32, No. 9, 01.09.2016, p. 1085-1094.

Research output: Contribution to journalArticle

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AU - Park, Sungho

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N2 - Objective This study compared internal adaptation of composites under different C-factors and examined the relationship between internal adaptation and polymerization shrinkage parameters. Methods Cylindrical cavities 3 mm in diameter were prepared in 100 human third molars in two depths: 4 mm high C-factor (H-CF) or 1 mm low C-factor (L-CF). After adhesive application (Clearfil SE One, Kuraray Noritake), the composite was placed in two increments in three subgroups: Filtek Supreme (FS, 3 M ESPE); Charisma Diamond (CD, Heraeus Kulzer); Amelogen Plus (AP, Ultradent); and as a single increment in two subgroups: Tetric EvoCeram Bulk Fill (TB, Ivoclar Vivadent) and Venus Bulk Fill (VB, Heraeus Kulzer). After thermo-mechanical load-cycles, imperfect margin percentage (%IM) was calculated using swept-source optical coherence tomography (SS-OCT) imaging. The relationships between %IM and linear shrinkage (LS) and shrinkage stress, measured under either zero-compliance (PS0) or compliance-allowed (PS) conditions were evaluated. Results The %IM was significantly different between H-CF and L-CF groups. The %IM in H-CF turned out to be as groups CD, FS ≤ TB < AP, VB. The %IM in L-CF showed as groups CD, TB ≤ FS, AP < VB. There were significant correlations between shrinkage parameters and %IM, except between PS0 and %IM in L-CF. Significance Internal adaptation in a high C-factor cavity was inferior to that in a low C-factor cavity for both conventional and bulk-filled composites. Internal adaptation, polymerization shrinkage, and stress were different among composite materials. Polymerization stress under the compliance-allowed condition showed significant correlations with internal adaptations in high and low C-factor cavities.

AB - Objective This study compared internal adaptation of composites under different C-factors and examined the relationship between internal adaptation and polymerization shrinkage parameters. Methods Cylindrical cavities 3 mm in diameter were prepared in 100 human third molars in two depths: 4 mm high C-factor (H-CF) or 1 mm low C-factor (L-CF). After adhesive application (Clearfil SE One, Kuraray Noritake), the composite was placed in two increments in three subgroups: Filtek Supreme (FS, 3 M ESPE); Charisma Diamond (CD, Heraeus Kulzer); Amelogen Plus (AP, Ultradent); and as a single increment in two subgroups: Tetric EvoCeram Bulk Fill (TB, Ivoclar Vivadent) and Venus Bulk Fill (VB, Heraeus Kulzer). After thermo-mechanical load-cycles, imperfect margin percentage (%IM) was calculated using swept-source optical coherence tomography (SS-OCT) imaging. The relationships between %IM and linear shrinkage (LS) and shrinkage stress, measured under either zero-compliance (PS0) or compliance-allowed (PS) conditions were evaluated. Results The %IM was significantly different between H-CF and L-CF groups. The %IM in H-CF turned out to be as groups CD, FS ≤ TB < AP, VB. The %IM in L-CF showed as groups CD, TB ≤ FS, AP < VB. There were significant correlations between shrinkage parameters and %IM, except between PS0 and %IM in L-CF. Significance Internal adaptation in a high C-factor cavity was inferior to that in a low C-factor cavity for both conventional and bulk-filled composites. Internal adaptation, polymerization shrinkage, and stress were different among composite materials. Polymerization stress under the compliance-allowed condition showed significant correlations with internal adaptations in high and low C-factor cavities.

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