Interfacial adaptation of composite restorations before and after light curing

Effects of adhesive and filling technique

Nariaki Yoshimine, Yasushi Shimada, Junji Tagami, Alireza Sadr

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Purpose: To investigate the effects of placement technique and adhesive material on adaptation of composites before and after light curing. Materials and Methods: Cylindrical cavities (3 mm diameter, 1.7 mm depth) in extracted human molars were restored in 6 groups (n = 5) using 2 adhesives - two-step self-etching Clearfil SE Bond 2 (SE2) and all-in-one Clearfil Tri-S Bond Plus (TSP) (Kuraray Noritake Dental) - and 2 composites - Estelite Sigma Quick (ESQ) and Estelite Flow Quick (FLQ) (Tokuyama Dental) - placed with three different techniques: ESQ bulk placed, FLQ lining followed by ESQ and FLQ bulk placed. Specimens were scanned twice using swept-source optical coherence tomography (SS-OCT) before and after photopolymerization of the composite. Gap formation during polymerization or the difference in floor interface (DFI%) and final unsealed interface (USI%) were measured by image coregistration and subtraction on 6 diametrical planes across each scan. Results: Two-way ANOVA suggested that both factors (adhesive and filling technique) and their interaction were significant (p < 0.001). SE2 showed significantly lower DFI% than did TSP when the composites were placed in bulk, but no difference was found when flowable lining was applied (p < 0.05). Within TSP, all filling techniques were significantly different and the lining group showed the lowest values, followed by ESQ-bulk. Overall, SE2 always showed lower UFI% than did TSP, while there was no difference among different techniques within SE2. Conclusion: SS-OCT is a unique method to observe the pre-existing interfacial defects and gaps developed during polymerization, which were found to depend on both placement technique and applied adhesive.

Original languageEnglish
Pages (from-to)329-336
Number of pages8
JournalJournal of Adhesive Dentistry
Volume17
Issue number4
DOIs
Publication statusPublished - 2015
Externally publishedYes

Fingerprint

Adhesives
Light
Optical Coherence Tomography
Polymerization
Tooth
Analysis of Variance
Estelite sigma
Tri S Bond

Keywords

  • All-in-one adhesive
  • Gap formation
  • Image subtraction
  • Lining
  • Swept-source optical coherence tomography
  • Two-step self-etching adhesive

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Interfacial adaptation of composite restorations before and after light curing : Effects of adhesive and filling technique. / Yoshimine, Nariaki; Shimada, Yasushi; Tagami, Junji; Sadr, Alireza.

In: Journal of Adhesive Dentistry, Vol. 17, No. 4, 2015, p. 329-336.

Research output: Contribution to journalArticle

@article{4e13b85e46a54f93bece309439993e24,
title = "Interfacial adaptation of composite restorations before and after light curing: Effects of adhesive and filling technique",
abstract = "Purpose: To investigate the effects of placement technique and adhesive material on adaptation of composites before and after light curing. Materials and Methods: Cylindrical cavities (3 mm diameter, 1.7 mm depth) in extracted human molars were restored in 6 groups (n = 5) using 2 adhesives - two-step self-etching Clearfil SE Bond 2 (SE2) and all-in-one Clearfil Tri-S Bond Plus (TSP) (Kuraray Noritake Dental) - and 2 composites - Estelite Sigma Quick (ESQ) and Estelite Flow Quick (FLQ) (Tokuyama Dental) - placed with three different techniques: ESQ bulk placed, FLQ lining followed by ESQ and FLQ bulk placed. Specimens were scanned twice using swept-source optical coherence tomography (SS-OCT) before and after photopolymerization of the composite. Gap formation during polymerization or the difference in floor interface (DFI{\%}) and final unsealed interface (USI{\%}) were measured by image coregistration and subtraction on 6 diametrical planes across each scan. Results: Two-way ANOVA suggested that both factors (adhesive and filling technique) and their interaction were significant (p < 0.001). SE2 showed significantly lower DFI{\%} than did TSP when the composites were placed in bulk, but no difference was found when flowable lining was applied (p < 0.05). Within TSP, all filling techniques were significantly different and the lining group showed the lowest values, followed by ESQ-bulk. Overall, SE2 always showed lower UFI{\%} than did TSP, while there was no difference among different techniques within SE2. Conclusion: SS-OCT is a unique method to observe the pre-existing interfacial defects and gaps developed during polymerization, which were found to depend on both placement technique and applied adhesive.",
keywords = "All-in-one adhesive, Gap formation, Image subtraction, Lining, Swept-source optical coherence tomography, Two-step self-etching adhesive",
author = "Nariaki Yoshimine and Yasushi Shimada and Junji Tagami and Alireza Sadr",
year = "2015",
doi = "10.3290/j.jad.a34554",
language = "English",
volume = "17",
pages = "329--336",
journal = "Journal of Adhesive Dentistry",
issn = "1461-5185",
publisher = "Quintessence Publishing Company",
number = "4",

}

TY - JOUR

T1 - Interfacial adaptation of composite restorations before and after light curing

T2 - Effects of adhesive and filling technique

AU - Yoshimine, Nariaki

AU - Shimada, Yasushi

AU - Tagami, Junji

AU - Sadr, Alireza

PY - 2015

Y1 - 2015

N2 - Purpose: To investigate the effects of placement technique and adhesive material on adaptation of composites before and after light curing. Materials and Methods: Cylindrical cavities (3 mm diameter, 1.7 mm depth) in extracted human molars were restored in 6 groups (n = 5) using 2 adhesives - two-step self-etching Clearfil SE Bond 2 (SE2) and all-in-one Clearfil Tri-S Bond Plus (TSP) (Kuraray Noritake Dental) - and 2 composites - Estelite Sigma Quick (ESQ) and Estelite Flow Quick (FLQ) (Tokuyama Dental) - placed with three different techniques: ESQ bulk placed, FLQ lining followed by ESQ and FLQ bulk placed. Specimens were scanned twice using swept-source optical coherence tomography (SS-OCT) before and after photopolymerization of the composite. Gap formation during polymerization or the difference in floor interface (DFI%) and final unsealed interface (USI%) were measured by image coregistration and subtraction on 6 diametrical planes across each scan. Results: Two-way ANOVA suggested that both factors (adhesive and filling technique) and their interaction were significant (p < 0.001). SE2 showed significantly lower DFI% than did TSP when the composites were placed in bulk, but no difference was found when flowable lining was applied (p < 0.05). Within TSP, all filling techniques were significantly different and the lining group showed the lowest values, followed by ESQ-bulk. Overall, SE2 always showed lower UFI% than did TSP, while there was no difference among different techniques within SE2. Conclusion: SS-OCT is a unique method to observe the pre-existing interfacial defects and gaps developed during polymerization, which were found to depend on both placement technique and applied adhesive.

AB - Purpose: To investigate the effects of placement technique and adhesive material on adaptation of composites before and after light curing. Materials and Methods: Cylindrical cavities (3 mm diameter, 1.7 mm depth) in extracted human molars were restored in 6 groups (n = 5) using 2 adhesives - two-step self-etching Clearfil SE Bond 2 (SE2) and all-in-one Clearfil Tri-S Bond Plus (TSP) (Kuraray Noritake Dental) - and 2 composites - Estelite Sigma Quick (ESQ) and Estelite Flow Quick (FLQ) (Tokuyama Dental) - placed with three different techniques: ESQ bulk placed, FLQ lining followed by ESQ and FLQ bulk placed. Specimens were scanned twice using swept-source optical coherence tomography (SS-OCT) before and after photopolymerization of the composite. Gap formation during polymerization or the difference in floor interface (DFI%) and final unsealed interface (USI%) were measured by image coregistration and subtraction on 6 diametrical planes across each scan. Results: Two-way ANOVA suggested that both factors (adhesive and filling technique) and their interaction were significant (p < 0.001). SE2 showed significantly lower DFI% than did TSP when the composites were placed in bulk, but no difference was found when flowable lining was applied (p < 0.05). Within TSP, all filling techniques were significantly different and the lining group showed the lowest values, followed by ESQ-bulk. Overall, SE2 always showed lower UFI% than did TSP, while there was no difference among different techniques within SE2. Conclusion: SS-OCT is a unique method to observe the pre-existing interfacial defects and gaps developed during polymerization, which were found to depend on both placement technique and applied adhesive.

KW - All-in-one adhesive

KW - Gap formation

KW - Image subtraction

KW - Lining

KW - Swept-source optical coherence tomography

KW - Two-step self-etching adhesive

UR - http://www.scopus.com/inward/record.url?scp=84953882997&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84953882997&partnerID=8YFLogxK

U2 - 10.3290/j.jad.a34554

DO - 10.3290/j.jad.a34554

M3 - Article

VL - 17

SP - 329

EP - 336

JO - Journal of Adhesive Dentistry

JF - Journal of Adhesive Dentistry

SN - 1461-5185

IS - 4

ER -