PMID- 34624422
OWN - NLM
STAT- MEDLINE
DCOM- 20211209
LR  - 20211214
IS  - 1879-176X (Electronic)
IS  - 0300-5712 (Linking)
VI  - 114
DP  - 2021 Nov
TI  - Assessibility of different CAD/CAM ceramics with optical coherence tomography.
PG  - 103836
LID - S0300-5712(21)00259-1 [pii]
LID - 10.1016/j.jdent.2021.103836 [doi]
AB  - OBJECTIVES: To investigate the light penetration depth of various CAD/CAM 
      ceramics and luting agents by spectral-domain optical coherence tomography 
      (SD-OCT). METHODS: Six CAD/CAM ceramics: lithium disilicate (LS2), 
      zirconia-reinforced lithium silicate (ZLS), lithium aluminosilicate (LAS), 
      polymer infiltrated (PIC), feldspar (FEL) and zirconium oxide (ZRO) and five 
      common luting agents, two self-adhesive and three adhesive materials, were 
      included. SD-OCT wavelengths (1310/1550 nm) and frequencies (5/28 kHz) that are 
      particularly suitable for these materials were investigated. Subsequently, a 
      clinical simulation was performed with an adhesively or self-adhesively inserted 
      partial crown made of a ceramic that had an OCT penetration depth of > 1.0 mm. 
      RESULTS: Best SD-OCT penetration was obtained at 1550 nm and 28 kHz. For ZLS, LS2 
      and LAS, SD-OCT light penetration depth of > 4 mm was shown. In contrast, the 
      penetration depth of ZRO, PIC and FEL was less than 1 mm. Adhesive and 
      self-adhesive luting agents could be visualized up to >/= 0.9 mm. All clinically 
      relevant areas (ceramic restoration, luting area, interfaces and adjacent tooth 
      structures) can be imaged when SD-OCT-suitable ceramics are used. CONCLUSIONS: 
      SD-OCT can be used to analyze CAD/CAM ceramics based on ZLS, LS2 and LAS, whereas 
      ZRO, PIC, and FEL had insufficient penetration depth for clinical application. 
      The type of luting agent or its thickness played an insignificant role. With 
      suitable ceramics, SD-OCT can be recommended as a non-invasive examination tool. 
      CLINICAL SIGNIFICANCE: This study indicates that SD-OCT is a useful non-invasive 
      examination method for monitoring lithium silicate-based ceramic restorations and 
      adjacent structures.
CI  - Copyright (c) 2021. Published by Elsevier Ltd.
FAU - Challakh, Nadia
AU  - Challakh N
AD  - Department of Cariology, Endodontology and Periodontology, University of Leipzig, 
      Germany. Electronic address: nadia.challakh@medizin.uni-leipzig.de.
FAU - Palsa, Dennis
AU  - Palsa D
AD  - Department of Cariology, Endodontology and Periodontology, University of Leipzig, 
      Germany.
FAU - Bemmann, Maximilian
AU  - Bemmann M
AD  - Department of Cariology, Endodontology and Periodontology, University of Leipzig, 
      Germany.
FAU - Merle, Cordula Leonie
AU  - Merle CL
AD  - Department of Cariology, Endodontology and Periodontology, University of Leipzig, 
      Germany.
FAU - Haak, Rainer
AU  - Haak R
AD  - Department of Cariology, Endodontology and Periodontology, University of Leipzig, 
      Germany.
FAU - Schulz-Kornas, Ellen
AU  - Schulz-Kornas E
AD  - Department of Cariology, Endodontology and Periodontology, University of Leipzig, 
      Germany.
FAU - Ziebolz, Dirk
AU  - Ziebolz D
AD  - Department of Cariology, Endodontology and Periodontology, University of Leipzig, 
      Germany.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20211005
PL  - England
TA  - J Dent
JT  - Journal of dentistry
JID - 0354422
RN  - 0 (Silicates)
SB  - IM
MH  - *Ceramics
MH  - Computer-Aided Design
MH  - Materials Testing
MH  - Silicates
MH  - *Tomography, Optical Coherence
OTO - NOTNLM
OT  - CAD/CAM
OT  - Ceramics
OT  - Luting agents
OT  - OCT
EDAT- 2021/10/09 06:00
MHDA- 2021/12/15 06:00
CRDT- 2021/10/08 20:14
PHST- 2021/07/09 00:00 [received]
PHST- 2021/09/16 00:00 [revised]
PHST- 2021/09/29 00:00 [accepted]
PHST- 2021/10/09 06:00 [pubmed]
PHST- 2021/12/15 06:00 [medline]
PHST- 2021/10/08 20:14 [entrez]
AID - S0300-5712(21)00259-1 [pii]
AID - 10.1016/j.jdent.2021.103836 [doi]
PST - ppublish
SO  - J Dent. 2021 Nov;114:103836. doi: 10.1016/j.jdent.2021.103836. Epub 2021 Oct 5.