PMID- 36600594
OWN - NLM
STAT- MEDLINE
DCOM- 20231216
LR  - 20231216
IS  - 1532-849X (Electronic)
IS  - 1059-941X (Linking)
VI  - 32
IP  - 9
DP  - 2023 Dec
TI  - The effect of thermomechanical aging on the retention of a conometric system in a 
      chewing simulator.
PG  - 838-845
LID - 10.1111/jopr.13638 [doi]
AB  - PURPOSE: To evaluate the retention force of a novel conometric system after 
      thermomechanical aging. In addition, the conometric system's retention force was 
      compared with that of the cemented implant-retained crowns. MATERIALS AND 
      METHODS: Two systems to retain implant crowns were tested in this study: a 
      conometric system and a cement-retained system. Forty-eight zirconia crowns were 
      fabricated using computer-aided design and computer-aided manufacturing 
      technology. Twenty-four zirconia crowns were cemented onto conometric caps with 
      resin-modified glass ionomer cement, which were then connected with abutments. 
      These specimens were divided into three groups, and each group was subjected to 
      the pull-out test. A-control group: 12 specimens directly subjected to pull-out 
      test; A-aged group: 12 specimens subjected to thermomechanical aging followed by 
      pull-out test; A-repeat group: After the pull-out, the specimens in the aging 
      group (A-aged) were reconnected, and the pull-out test was repeated once more. 
      The remaining 24 zirconia crowns were cemented on standard abutments with zinc 
      phosphate cement, and two groups were formed. C-control group: 12 specimens 
      directly subjected to the pull-out test; C-aged group: 12 specimens subjected to 
      thermomechanical aging followed by pull-out. Scanning electron microscope (SEM) 
      was used to evaluate the surfaces of caps and abutments. To analyze the data, 
      repeated measures, one-way ANOVA, and Bonferroni tests were used (p < 0.05). 
      RESULTS: The mean retention force value of the A-control group was 
      148.22 +/- 16.37 N. The highest mean retention force value was measured in the 
      A-aged group (204.93 +/- 51.67 N), and the lowest mean retention force value was 
      seen in the A-repeated group (77.02 +/- 21.48 N). Thermomechanical aging had a 
      significant influence (p < 0.05) on both systems. No significant differences in 
      retention force were found between the thermomechanical aged groups of both 
      systems (p > 0.05). SEM analysis revealed that aging had an impact on the surface 
      of the conometric system's caps and abutments. CONCLUSIONS: The retention force 
      of the conometric system increased significantly following thermomechanical 
      aging. No crown separation occurred during the thermomechanical aging of the 
      conometric system. There was no significant difference in the retention of the 
      conometric and cemented systems after thermomechanical aging.
CI  - (c) 2023 by the American College of Prosthodontists.
FAU - Al-Chalabi, Zainab S
AU  - Al-Chalabi ZS
AD  - Department of Prosthodontics, Faculty of Dentistry, Suleyman Demirel University, 
      Isparta, Turkey.
FAU - Tuna, Suleyman H
AU  - Tuna SH
AUID- ORCID: 0000-0002-8305-1086
AD  - Department of Prosthodontics, Faculty of Dentistry, Dokuz Eylul University, 
      Izmir, Turkey.
LA  - eng
GR  - TDK-2019-7341/Suleyman Demirel University/
PT  - Journal Article
DEP - 20230113
PL  - United States
TA  - J Prosthodont
JT  - Journal of prosthodontics : official journal of the American College of 
      Prosthodontists
JID - 9301275
RN  - S38N85C5G0 (zirconium oxide)
RN  - 0 (Dental Cements)
RN  - C6V6S92N3C (Zirconium)
RN  - 0 (Glass Ionomer Cements)
MH  - *Mastication
MH  - *Dental Cements
MH  - Zirconium
MH  - Glass Ionomer Cements
MH  - Crowns
MH  - Materials Testing
MH  - Dental Stress Analysis
MH  - Dental Abutments
MH  - Computer-Aided Design
OTO - NOTNLM
OT  - cap
OT  - cold welding
OT  - conometric abutment
OT  - pull-out
OT  - retention
EDAT- 2023/01/06 06:00
MHDA- 2023/12/17 09:46
CRDT- 2023/01/05 01:33
PHST- 2022/04/08 00:00 [received]
PHST- 2022/12/16 00:00 [accepted]
PHST- 2023/12/17 09:46 [medline]
PHST- 2023/01/06 06:00 [pubmed]
PHST- 2023/01/05 01:33 [entrez]
AID - 10.1111/jopr.13638 [doi]
PST - ppublish
SO  - J Prosthodont. 2023 Dec;32(9):838-845. doi: 10.1111/jopr.13638. Epub 2023 Jan 13.