PMID- 28433536
OWN - NLM
STAT- MEDLINE
DCOM- 20180507
LR  - 20220311
IS  - 1879-176X (Electronic)
IS  - 0300-5712 (Linking)
VI  - 61
DP  - 2017 Jun
TI  - Assessment of enamel cracks at adhesive cavosurface margin using 
      three-dimensional swept-source optical coherence tomography.
PG  - 28-32
LID - S0300-5712(17)30089-1 [pii]
LID - 10.1016/j.jdent.2017.04.005 [doi]
AB  - OBJECTIVES: Swept-source optical coherence tomography (SS-OCT) can construct 
      cross-sectional images of internal biological structures. The aim of this study 
      was to evaluate enamel cracks at the cavosurface margin of composite restorations 
      using SS-OCT. METHODS: Bowl-shaped cavities were prepared at two locations 
      (mid-coronal and cervical regions) on the enamel surface of 60 bovine teeth. Half 
      of the cavities (30) were treated with phosphoric acid gel. A two-step self-etch 
      adhesive (Clearfil SE Bond) was applied to all cavities and a flowable composite 
      was placed in bulk. After 7days in water at 37 degrees C, three-dimensional (3D) images 
      of the specimens were obtained using SS-OCT, and cross-sectional views of the 
      cavosurface margin were examined. Presence and extent of enamel cracks along the 
      cavosurface margin circumference were evaluated using a 5-point scale. The 
      results were statistically compared with Wilcoxon rank sum test with Bonferroni 
      correction. RESULTS: 3D SS-OCT could detect enamel cracks at the cavosurface 
      margin of composite restorations. Cervical regions caused more enamel cracking 
      than mid-coronal regions. Phosphoric acid etching increased the incidence of 
      enamel cracks compared with the preparations without etching. CONCLUSION: SS-OCT 
      can be used to detect enamel cracks at the margins of composite restorations 
      noninvasively. Presence and extent of enamel cracks depended on the enamel region 
      and bonding protocol. CLINICAL SIGNIFICANCE: SS-OCT can be used to detect enamel 
      cracks at the margins of composite restorations noninvasively. Selective 
      phosphoric acid etching of the enamel significantly increased the incidence of 
      marginal cracks, especially in cervical preparation.
CI  - Copyright (c) 2017 Elsevier Ltd. All rights reserved.
FAU - Tabata, Tomoko
AU  - Tabata T
AD  - Cariology and Operative Dentistry, Oral Restitution Department, Graduate School 
      of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 
      Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
FAU - Shimada, Yasushi
AU  - Shimada Y
AD  - Cariology and Operative Dentistry, Oral Restitution Department, Graduate School 
      of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 
      Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan; Department of Operative Dentistry, 
      Graduate School of Medicine and Dentistry, Okayama University, 2-5-1 Shikata-cho, 
      Kita-ku, Okayama, 700-8525, Japan. Electronic address: 
      shimada.ope@okayama-u.ac.jp.
FAU - Sadr, Alireza
AU  - Sadr A
AD  - Biomimetics Biomaterials Biophotonics & Technology Laboratory, Department of 
      Restorative Dentistry, University of Washington School of Dentistry, 1959 NE 
      Pacific St. Box 357456, Seatle, WA, 98195-7456, USA.
FAU - Tagami, Junji
AU  - Tagami J
AD  - Cariology and Operative Dentistry, Oral Restitution Department, Graduate School 
      of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 
      Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
FAU - Sumi, Yasunori
AU  - Sumi Y
AD  - National Center for Geriatrics and Gerontology, Department for Advanced Dental 
      Research, Center of Advanced Medicine for Dental and Oral Diseases, 36-3, Gengo, 
      Morioka, Obu, Aichi, 474-8511, Japan.
LA  - eng
PT  - Journal Article
DEP - 20170419
PL  - England
TA  - J Dent
JT  - Journal of dentistry
JID - 0354422
RN  - 0 (Clearfil SE Bond)
RN  - 0 (Composite Resins)
RN  - 0 (Dentin-Bonding Agents)
RN  - 0 (Phosphoric Acids)
RN  - 0 (Resin Cements)
RN  - 0 (flowable hybrid composite)
RN  - E4GA8884NN (phosphoric acid)
SB  - IM
MH  - Acid Etching, Dental
MH  - Animals
MH  - Cattle
MH  - Composite Resins/chemistry/therapeutic use
MH  - Dental Caries/chemically induced/*diagnostic imaging/therapy
MH  - Dental Cavity Preparation
MH  - Dental Enamel/*diagnostic imaging/*drug effects/*injuries
MH  - Dental Marginal Adaptation
MH  - Dental Restoration, Permanent/*adverse effects/methods
MH  - Dentin-Bonding Agents
MH  - Microscopy, Confocal
MH  - Phosphoric Acids/*adverse effects
MH  - Resin Cements
MH  - Surface Properties
MH  - Tomography, Optical Coherence/*methods
OTO - NOTNLM
OT  - 3D image
OT  - Cavosurface margin
OT  - Composite restorations
OT  - Enamel cracks
OT  - SS-OCT
EDAT- 2017/04/24 06:00
MHDA- 2018/05/08 06:00
CRDT- 2017/04/24 06:00
PHST- 2017/01/31 00:00 [received]
PHST- 2017/04/03 00:00 [revised]
PHST- 2017/04/15 00:00 [accepted]
PHST- 2017/04/24 06:00 [pubmed]
PHST- 2018/05/08 06:00 [medline]
PHST- 2017/04/24 06:00 [entrez]
AID - S0300-5712(17)30089-1 [pii]
AID - 10.1016/j.jdent.2017.04.005 [doi]
PST - ppublish
SO  - J Dent. 2017 Jun;61:28-32. doi: 10.1016/j.jdent.2017.04.005. Epub 2017 Apr 19.