PMID- 38500976
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240320
IS  - 2405-8440 (Print)
IS  - 2405-8440 (Electronic)
IS  - 2405-8440 (Linking)
VI  - 10
IP  - 6
DP  - 2024 Mar 30
TI  - Examination of the effect of aging process on marginal fit and fractute strength 
      of temporary crowns prepared from different materials.
PG  - e26737
LID - 10.1016/j.heliyon.2024.e26737 [doi]
LID - e26737
AB  - AIM: The aim of this study is to investigate the effect of the aging process on 
      the marginal fit and fracture resistance of temporary crowns prepared using 
      different materials. MATERIALS AND METHOD: The steel die to represent the 
      maxillary first premolar used in this study was produced on a CNC turning machine 
      to include an anatomical occlusal surface. A total of 160 epoxy resin dies were 
      obtained by taking impressions with conventional impression methods on the metal 
      die. Epoxy resin dies were randomly divided into four groups. Temporary crowns 
      were prepared for each group from poly acrylic resin (Vita CADTemp(R)), bis-acryl 
      composite resin (Protemp 4), poly methyl methacrylate (PMMA; Imident) and poly 
      ethyl methacrylate (PEMA; Dentalon Plus) restorative materials. Half of the 
      specimens (n = 20) in each group (n = 40) were randomly separated and the aging 
      process was applied 5000 times in the device. Marginal gap measurements on epoxy 
      resin dies were made using a stereomicroscope. The fracture strength test of the 
      specimens was performed by using the Instron Universal Test Device. Jamovi 2.2.5 
      statistical program was used for statistical analysis. RESULTS: When compared to 
      temporary crowns prepared from all other materials, poly acrylic resin (Vita 
      CADTemp (R)) temporary crowns observed significantly lower marginal gap values 
      (59,05 mum) regardless of the aging process, and a significantly higher fracture 
      resistance (478,44 N) in the presence of aging process (p < .05 for each). While 
      the highest marginal gap value was detected in PMMA (Imident) (120.36 mum) 
      temporary crowns with aging process, the lowest marginal gap value was observed 
      in poly acrylic resin (Vita CADTemp(R)) (59.05 mum) crowns without non-aging 
      process. The marginal fit and fracture resistance of all temporary crowns were 
      negatively affected by the aging process. CONCLUSION: Our findings revealed the 
      superiority of poly acrylic resin (Vita CADTemp(R)) crowns to the temporary crowns 
      prepared from all other materials in terms of the significantly lower marginal 
      gap in the absence of aging process, and the significantly higher fracture 
      resistance in the presence of aging process. Marginal fit and fracture resistance 
      values for all materials were found to be within clinically acceptable limits.
CI  - (c) 2024 The Authors.
FAU - Tufekci, Bahriye Bahar
AU  - Tufekci BB
AD  - Prosthodontics Specialist, Trabzon Oral and Dental Health Hospital, Trabzon, 
      Turkey.
FAU - Yesil, Zeynep
AU  - Yesil Z
AD  - Prof. Dr. Recep Tayyip Erdogan University, Ataturk University, Turkey.
AD  - Ataturk University Faculty of Dentistry, Department of Prosthetic Dentistry, 
      Erzurum, Turkey.
LA  - eng
PT  - Journal Article
DEP - 20240227
PL  - England
TA  - Heliyon
JT  - Heliyon
JID - 101672560
PMC - PMC10945148
OTO - NOTNLM
OT  - Different temporary crown materials
OT  - Fracture resistance
OT  - Marginal fit
COIS- The authors declare that they have no known competing financial interests or 
      personal relationships that could have appeared to influence the work reported in 
      this paper.
EDAT- 2024/03/19 06:44
MHDA- 2024/03/19 06:45
PMCR- 2024/02/27
CRDT- 2024/03/19 03:44
PHST- 2023/06/16 00:00 [received]
PHST- 2024/02/11 00:00 [revised]
PHST- 2024/02/19 00:00 [accepted]
PHST- 2024/03/19 06:45 [medline]
PHST- 2024/03/19 06:44 [pubmed]
PHST- 2024/03/19 03:44 [entrez]
PHST- 2024/02/27 00:00 [pmc-release]
AID - S2405-8440(24)02768-3 [pii]
AID - e26737 [pii]
AID - 10.1016/j.heliyon.2024.e26737 [doi]
PST - epublish
SO  - Heliyon. 2024 Feb 27;10(6):e26737. doi: 10.1016/j.heliyon.2024.e26737. 
      eCollection 2024 Mar 30.