PMID- 28613055
OWN - NLM
STAT- MEDLINE
DCOM- 20170906
LR  - 20181202
IS  - 1002-0098 (Print)
IS  - 1002-0098 (Linking)
VI  - 52
IP  - 6
DP  - 2017 Jun 9
TI  - [Comparison of adaptation and microstructure of titanium upper complete denture 
      base fabricated by selecting laser melting and electron beam melting].
PG  - 346-350
LID - 10.3760/cma.j.issn.1002-0098.2017.06.005 [doi]
AB  - Objective: To fabricate Ti alloy frameworks for a maxillary complete denture with 
      three-dimensional printing (3DP) technique, such as selective laser melting (SLM) 
      and electron beam melting (EBM), and to evaluate the microstructure of these 
      frameworks and their adaptation to the die stone models. Methods: Thirty pairs of 
      edentulous casts were divided into 3 groups randomly and equally. In each group, 
      one of the three techniques (SLM, EBM, conventional technique) was used to 
      fabricate Ti alloy frameworks. The base-cast sets were transversally sectioned 
      into 3 sections at the distal of canines, mesial of first molars, and the 
      posterior palatal zone. The gap between the metal base and cast was measured in 
      the 3 sections. Stereoscopic microscope was used to measure the gap. Three pieces 
      of specimens of 5 mm diameter were fabricated with Ti alloy by SLM, EBM and the 
      traditional casting technology (as mentioned above). Scanning electron microscope 
      (SEM) was used to evaluate the differences of microstructure among these 
      specimens. Results: The gaps between the metal base and cast were (99.4+/-17.0), 
      (98.2+/-26.1), and (99.6+/- 16.1) mum in conventional method; (99.4 +/- 22.8), (83.1 +/- 
      19.3), and (103.3 +/- 13.8) mum in SLM technique; (248.3+/-70.3), (279.1+/-71.9), and 
      (189.1+/-31.6) mum in EBM technique. There was no statistical difference in the 
      value of gaps between SLM Ti alloy and conventional method Ti alloy group 
      (P>0.05). There was statistical difference among EBM Ti alloy, conventional 
      method Ti alloy and SLM Ti alloy group (P<0.05). The SLM Ti alloy showed more 
      uniform and compact microstructure than the cast Ti alloy and EBM Ti alloy did. 
      Conclusions: SLM technique showed initial feasibility to manufacture the dental 
      base of complete denture. The mechanical properties and microstructure of the 
      denture frameworks prepared by SLM indicate that these dentures are appropriate 
      for clinical use. EBM technique is inadequate to make a complete denture now.
FAU - Ye, Y
AU  - Ye Y
AD  - Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong 
      University School of Medicine & Shanghai Key Laboratory of Stomatology, Shanghai 
      200011, China.
FAU - Xiong, Y Y
AU  - Xiong YY
AD  - Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong 
      University School of Medicine & Shanghai Key Laboratory of Stomatology, Shanghai 
      200011, China.
FAU - Zhu, J R
AU  - Zhu JR
AD  - Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong 
      University School of Medicine & Shanghai Key Laboratory of Stomatology, Shanghai 
      200011, China [Present address: Department of Stomatology, Kashgar Prefecture 
      Second People's Hospital, Xinjiang Uygur Autonomous Region 844000, China].
FAU - Sun, J
AU  - Sun J
AD  - Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong 
      University School of Medicine & Shanghai Key Laboratory of Stomatology, Shanghai 
      200011, China.
LA  - chi
PT  - Comparative Study
PT  - Journal Article
PL  - China
TA  - Zhonghua Kou Qiang Yi Xue Za Zhi
JT  - Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese 
      journal of stomatology
JID - 8711066
RN  - 0 (Chromium Alloys)
RN  - 0 (Dental Alloys)
RN  - D1JT611TNE (Titanium)
SB  - IM
MH  - Chromium Alloys
MH  - Dental Alloys
MH  - *Dental Casting Technique
MH  - *Denture, Complete
MH  - Electrons
MH  - Feasibility Studies
MH  - Humans
MH  - *Lasers
MH  - Mouth, Edentulous
MH  - *Printing, Three-Dimensional
MH  - Random Allocation
MH  - *Titanium
OTO - NOTNLM
OT  - Denture bases
OT  - Denture, complete, upper
OT  - Three-dimensional printing
OT  - Titanium
EDAT- 2017/06/15 06:00
MHDA- 2017/09/07 06:00
CRDT- 2017/06/15 06:00
PHST- 2017/06/15 06:00 [entrez]
PHST- 2017/06/15 06:00 [pubmed]
PHST- 2017/09/07 06:00 [medline]
AID - 10.3760/cma.j.issn.1002-0098.2017.06.005 [doi]
PST - ppublish
SO  - Zhonghua Kou Qiang Yi Xue Za Zhi. 2017 Jun 9;52(6):346-350. doi: 
      10.3760/cma.j.issn.1002-0098.2017.06.005.