PMID- 36211304
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20221011
IS  - 2641-5275 (Electronic)
IS  - 2641-5275 (Linking)
VI  - 9
IP  - 1
DP  - 2022
TI  - Optical coherence tomography systems for evaluation of marginal and internal fit 
      of ceramic reconstructions.
PG  - 84-91
LID - 10.1080/26415275.2022.2122468 [doi]
AB  - PURPOSE: To evaluate the marginal and internal fit of lithium disilicate and 
      zirconia crowns using two optical coherence tomography (OCT) systems in order to 
      estimate inter-system variations. MATERIALS AND METHODS: Ten lithium disilicate 
      and 10 cubic stabilized zirconia crowns were placed on prepared artificial teeth 
      without cement. Marginal discrepancy and internal cement gap of the crowns were 
      assessed on images obtained using a swept source OCT (SS-OCT) and a spectral 
      domain OCT (SD-OCT). Medians and interquartile ranges were calculated for both 
      materials and OCT systems. Thereafter, Wilcoxon signed rank test was carried out. 
      RESULTS: No significant difference was found between the two OCT systems for 
      absolute marginal discrepancy of either lithium disilicate (SS-OCT: 182 microm, 
      SD-OCT: 214 microm; p = .922) or zirconia crowns (SS-OCT: 116 microm, SD-OCT: 121 microm; 
      p = .232). Regarding internal cement gap, no significant difference was found 
      between the two OCT systems for lithium disilicate crowns (SS-OCT: 128 microm, 
      SD-OCT: 128 microm; p = .064). However, for zirconia crowns the SD-OCT showed 
      significantly higher (p = .027) internal cement gap (92 microm) than the SS-OCT 
      (68 microm). Moreover, it was not possible to assess the internal fit of zirconia 
      crowns in 47% and 34% of the sites using SD-OCT and SS-OCT, respectively. 
      CONCLUSIONS: No significant difference was noted in the ability of SS-OCT and 
      SD-OCT to assess the marginal and internal fit of lithium disilicate crowns, nor 
      the marginal fit of zirconia crowns. On the contrary, drawbacks regarding the 
      assessment of internal fit of zirconia crowns using both OCT systems were 
      observed.
CI  - (c) 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & 
      Francis Group.
FAU - Al-Imam, Hiba
AU  - Al-Imam H
AUID- ORCID: 0000-0002-1535-4587
AD  - Department of Odontology, Section of Oral Rehabilitation, Faculty of Health and 
      Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
AD  - Department of Odontology, Section of Dental Materials, Faculty of Health and 
      Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
FAU - Benetti, Ana R
AU  - Benetti AR
AUID- ORCID: 0000-0001-5855-8822
AD  - Department of Odontology, Section of Dental Materials, Faculty of Health and 
      Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
FAU - Tomlins, Pete
AU  - Tomlins P
AUID- ORCID: 0000-0002-0534-8642
AD  - Caristo Diagnostics Ltd. Formerly Affiliated to Centre for Oral Bioengineering, 
      Barts and The London School of Medicine and Dentistry, Queen Mary University of 
      London, London, United Kingdom.
FAU - Gotfredsen, Klaus
AU  - Gotfredsen K
AUID- ORCID: 0000-0003-1444-9362
AD  - Department of Odontology, Section of Oral Rehabilitation, Faculty of Health and 
      Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
LA  - eng
PT  - Journal Article
DEP - 20220929
PL  - England
TA  - Biomater Investig Dent
JT  - Biomaterial investigations in dentistry
JID - 101755000
PMC - PMC9543067
OTO - NOTNLM
OT  - Optical coherence tomography
OT  - lithium disilicate
OT  - zirconia
COIS- No potential conflict of interest was reported by the authors.
EDAT- 2022/10/11 06:00
MHDA- 2022/10/11 06:01
PMCR- 2022/09/29
CRDT- 2022/10/10 03:51
PHST- 2022/10/10 03:51 [entrez]
PHST- 2022/10/11 06:00 [pubmed]
PHST- 2022/10/11 06:01 [medline]
PHST- 2022/09/29 00:00 [pmc-release]
AID - 2122468 [pii]
AID - 10.1080/26415275.2022.2122468 [doi]
PST - epublish
SO  - Biomater Investig Dent. 2022 Sep 29;9(1):84-91. doi: 
      10.1080/26415275.2022.2122468. eCollection 2022.