PMID- 36864998
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230304
IS  - 2345-6485 (Print)
IS  - 2345-6418 (Electronic)
IS  - 2345-6418 (Linking)
VI  - 24
IP  - 1
DP  - 2023 Mar
TI  - Compressive Strength of Temporary Crowns Made from Default design in Two Types of 
      Software.
PG  - 47-52
LID - 10.30476/DENTJODS.2022.89736.1433 [doi]
AB  - STATEMENT OF THE PROBLEM: Various default values in each software can eventually 
      lead to different crown thicknesses and affect their compressive strength. 
      PURPOSE: This study aimed to compare the compressive strength of temporary crowns 
      made with the milling machine, designed in Exocad and 3Shape Dental System 
      software. MATERIALS AND METHOD: In this in vitro study, 90 temporary crowns were 
      made and evaluated based on each software settings. For this purpose, a sound 
      premolar was first scanned as a pre-operative model by 3Shape laboratory scanner. 
      The standard tooth preparation and scanning were performed, and then the 
      temporary crown files (designed by each software) were transferred to the 
      Imesicore 350i milling machine. A total of 90 temporary crowns (45 based on the 
      file of each software) were made using poly methyl methacrylate (PMMA) vita 
      cad-temp block. The value of compressive force displayed on the monitor was 
      recorded at the first crack and the ultimate failure of the crown. RESULTS: The 
      first crack and the ultimate strength of crowns designed with the Exocad software 
      was 903.5+/-96N and 1490+/-139.3N and for crowns designed with 3Shape Dental System 
      software was 1060.4+/-160.2N and 1691.1+/-73.9N, respectively. The amount of 
      compressive strength of temporary crowns made with 3Shape Dental System was 
      significantly higher than those made with Exocad software and this difference was 
      statistically significant(p= 0.000). CONCLUSION: The compressive strength of 
      temporary dental crowns made by both softwares is in a clinically acceptable 
      range, but considering that the average compressive strength in the 3Shape Dental 
      System group was slightly higher than of the other group, it is preferable to 
      design and fabricate with 3Shape Dental System software to increase the 
      compressive strength of these crowns.
CI  - Copyright: (c) Journal of Dentistry.
FAU - Ghaffari, Tahereh
AU  - Ghaffari T
AD  - Dept. of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical 
      Sciences, Tabriz, Iran.
FAU - Nourizadeh, Amin
AU  - Nourizadeh A
AD  - Dept. of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical 
      Sciences, Tabriz, Iran.
FAU - Shafiei, Elnaz
AU  - Shafiei E
AD  - Dept. of Prosthodontics, Faculty of Dentistry, Tabriz Medical Sciences, Islamic 
      Azad University, Tabriz, Iran.
FAU - Mahboub, Farhang
AU  - Mahboub F
AD  - Dept. of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical 
      Sciences, Tabriz, Iran.
FAU - Kalantari, Amir Reza
AU  - Kalantari AR
AD  - Postgraduate Student, Dept. of Prosthodontics, Faculty of Dentistry, Tabriz 
      University of Medical Sciences, Tabriz, Iran.
LA  - eng
PT  - Journal Article
PL  - Iran
TA  - J Dent (Shiraz)
JT  - Journal of dentistry (Shiraz, Iran)
JID - 101615440
PMC - PMC9971611
OTO - NOTNLM
OT  - 3Shape Dental System software
OT  - Compressive strength
OT  - Exocad software
OT  - Fixed prosthesis
OT  - Temporary crown
COIS- The authors declare that they have no conflict of interest.
EDAT- 2023/03/04 06:00
MHDA- 2023/03/04 06:01
PMCR- 2023/03/01
CRDT- 2023/03/03 02:26
PHST- 2021/05/01 00:00 [received]
PHST- 2021/07/10 00:00 [revised]
PHST- 2021/10/29 00:00 [accepted]
PHST- 2023/03/03 02:26 [entrez]
PHST- 2023/03/04 06:00 [pubmed]
PHST- 2023/03/04 06:01 [medline]
PHST- 2023/03/01 00:00 [pmc-release]
AID - JDS-24-1 [pii]
AID - 10.30476/DENTJODS.2022.89736.1433 [doi]
PST - ppublish
SO  - J Dent (Shiraz). 2023 Mar;24(1):47-52. doi: 10.30476/DENTJODS.2022.89736.1433.