PMID- 33810060
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210408
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 14
IP  - 6
DP  - 2021 Mar 22
TI  - Scanning Electron Microscopic Evaluation of the Internal Fit Accuracy of 
      3D-Printed Biphasic Calcium Phosphate Block: An Ex Vivo Pilot Study.
LID - 10.3390/ma14061557 [doi]
LID - 1557
AB  - The aim of this study was to assess the internal fit accuracy of a 
      three-dimensional (3D)-printed biphasic calcium phosphate (BCP) block compared 
      with a 3D-milled poly methyl methacrylate (PMMA) block by scanning electron 
      microscope (SEM) analysis. In a total of 20 porcine rib bones, two different 
      types of defects having two adjacent walls and a floor were produced: a defect 
      with a flat floor (flat defect; N = 10) and a defect with a concave floor (curved 
      defect; N = 10). Each defect was grafted with either the 3D-printed BCP block or 
      the 3D-milled PMMA block fabricated following the computer aided design. The 
      defects were then cut cross-sectionally and evaluated under the SEM. The extents 
      of internal contact and gap were measured and statistically analyzed (p < 0.05). 
      All blocks in both BCP and PMMA groups were successfully fit to the flat and 
      curved defects. The internal contact ratio was significantly higher in the BCP 
      group (flat defect: 0.47 +/- 0.10; curved defect: 0.29 +/- 0.05) compared with the 
      PMMA group (flat defect: 0.21 +/- 0.13; curved defect: 0.17 +/- 0.04; p < 0.05). The 
      internal gap area was similar between the two groups regardless of the defect 
      types (p > 0.05). The internal fit accuracy of the 3D-printed BCP block was 
      reliable in both the flat and curved defects when compared with the accuracy of 
      the 3D-milled PMMA block.
FAU - Jeon, Su-Hee
AU  - Jeon SH
AD  - Department of Periodontology, Research Institute for Periodontal Regeneration, 
      Yonsei University College of Dentistry, Seoul 03722, Korea.
FAU - Song, Young Woo
AU  - Song YW
AUID- ORCID: 0000-0003-1835-5646
AD  - Department of Periodontology, Research Institute for Periodontal Regeneration, 
      Yonsei University College of Dentistry, Seoul 03722, Korea.
FAU - Cha, Jae-Kook
AU  - Cha JK
AD  - Department of Periodontology, Research Institute for Periodontal Regeneration, 
      Yonsei University College of Dentistry, Seoul 03722, Korea.
FAU - Paik, Jeong-Won
AU  - Paik JW
AD  - Department of Periodontology, Research Institute for Periodontal Regeneration, 
      Yonsei University College of Dentistry, Seoul 03722, Korea.
FAU - Han, Sang-Sun
AU  - Han SS
AUID- ORCID: 0000-0003-1775-7862
AD  - Department of Oral and Maxillofacial Radiology, Yonsei University College of 
      Dentistry, Seoul 03722, Korea.
FAU - Choi, Seong-Ho
AU  - Choi SH
AUID- ORCID: 0000-0001-6704-6124
AD  - Department of Periodontology, Research Institute for Periodontal Regeneration, 
      Yonsei University College of Dentistry, Seoul 03722, Korea.
LA  - eng
GR  - NRF2017R1A2B4002782/National Research Foundation of Korea/
PT  - Journal Article
DEP - 20210322
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC8004813
OTO - NOTNLM
OT  - 3D-milling
OT  - 3D-printing
OT  - computer aided design
OT  - ex vivo study
OT  - scanning electron microscope
COIS- The authors declare no conflict of interest. The funders had no role in the 
      design of the study; in the collection, analyses, or interpretation of data; in 
      the writing of the manuscript, or in the decision to publish the results.
EDAT- 2021/04/04 06:00
MHDA- 2021/04/04 06:01
PMCR- 2021/03/22
CRDT- 2021/04/03 01:35
PHST- 2021/02/05 00:00 [received]
PHST- 2021/03/08 00:00 [revised]
PHST- 2021/03/16 00:00 [accepted]
PHST- 2021/04/03 01:35 [entrez]
PHST- 2021/04/04 06:00 [pubmed]
PHST- 2021/04/04 06:01 [medline]
PHST- 2021/03/22 00:00 [pmc-release]
AID - ma14061557 [pii]
AID - materials-14-01557 [pii]
AID - 10.3390/ma14061557 [doi]
PST - epublish
SO  - Materials (Basel). 2021 Mar 22;14(6):1557. doi: 10.3390/ma14061557.