PMID- 30231088
OWN - NLM
STAT- MEDLINE
DCOM- 20181113
LR  - 20211204
IS  - 1942-4434 (Electronic)
IS  - 0882-2786 (Linking)
VI  - 33
IP  - 5
DP  - 2018 Sep/Oct
TI  - Evaluation of Vertical Misfit of CAD/CAM Implant-Supported Titanium and Zirconia 
      Frameworks.
PG  - 1027-1032
LID - 10.11607/jomi.6320 [doi]
AB  - PURPOSE: This study compared the vertical misfit of fixed implant-supported 
      titanium (Ti6Al4V) and yttria-stabilized tetragonal zirconia frameworks milled 
      using the computer-aided design/computer-aided manufacturing (CAD/CAM) Zirkonzahn 
      system. MATERIALS AND METHODS: An aluminum mandibular master cast was used, and 
      four analogs of the Regular CrossFit implant for straight multibase titanium 
      alloy abutments (Institut Straumann) were fixed with self-curing acrylic resin in 
      mandibular canine and second premolar tooth locations with the aid of a 
      parallelometer. Scan abutments were placed over the four straight multibase 
      Regular CrossFit abutments to determine their correct three-dimensional (3D) 
      positioning in the virtual model. Implant frameworks were designed virtually, and 
      five frameworks of each material (titanium alloy or yttria-stabilized tetragonal 
      zirconia) were milled using the CAD/CAM system. Scanning electron microscope 
      (SEM) images, with magnifications of 50x, 250x, and 1,000x, were obtained from 
      three points on the buccal surface, three points on the lingual surface, and 
      three points on the mesial surface of each abutment. The measurements were 
      performed in the center of each of the thirds, thus defining points one, two, and 
      three. The degree of vertical misfit at the framework-abutment interface was 
      determined using ImageJ software and analyzed using the Student t test (P = .05). 
      RESULTS: The mean misalignment value was 6.011 +/- 0.750 mum for the titanium group 
      and 9.055 +/- 3.692 mum for the zirconia group. CONCLUSION: Within the limitations 
      of this study, there was no significant difference in vertical misfit between the 
      titanium and zirconia implant frameworks produced using the CAD/CAM system. 
      Regardless of the material used, the CAD/CAM frameworks achieved an adequate 
      vertical fit.
FAU - da Cunha Fontoura, Diego
AU  - da Cunha Fontoura D
FAU - de Magalhaes Barros, Vinicius
AU  - de Magalhaes Barros V
FAU - de Magalhaes, Claudia Silami
AU  - de Magalhaes CS
FAU - Vaz, Ricardo Rodrigues
AU  - Vaz RR
FAU - Moreira, Allyson Nogueira
AU  - Moreira AN
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Int J Oral Maxillofac Implants
JT  - The International journal of oral & maxillofacial implants
JID - 8611905
RN  - 0 (Alloys)
RN  - 0 (Dental Implants)
RN  - 0 (yttria stabilized tetragonal zirconia)
RN  - 12743-70-3 (titanium alloy (TiAl6V4))
RN  - 58784XQC3Y (Yttrium)
RN  - C6V6S92N3C (Zirconium)
RN  - D1JT611TNE (Titanium)
SB  - IM
MH  - Alloys
MH  - *Computer-Aided Design
MH  - Dental Abutments
MH  - *Dental Implants
MH  - *Dental Prosthesis, Implant-Supported
MH  - Humans
MH  - Materials Testing
MH  - Titanium/*chemistry
MH  - Yttrium/*chemistry
MH  - Zirconium/*chemistry
EDAT- 2018/09/20 06:00
MHDA- 2018/11/14 06:00
CRDT- 2018/09/20 06:00
PHST- 2018/09/20 06:00 [entrez]
PHST- 2018/09/20 06:00 [pubmed]
PHST- 2018/11/14 06:00 [medline]
AID - 10.11607/jomi.6320 [doi]
PST - ppublish
SO  - Int J Oral Maxillofac Implants. 2018 Sep/Oct;33(5):1027-1032. doi: 
      10.11607/jomi.6320.