Back to Search Start Over

Stress distribution in pediatric zirconia crowns depending on different tooth preparation and cement type: a finite element analysis.

Authors :
Chung SY
Lee H
Chae YK
Jung YS
Jo SS
Lee KE
Choi SC
Nam OH
Source :
BMC oral health [BMC Oral Health] 2022 Dec 01; Vol. 22 (1), pp. 550. Date of Electronic Publication: 2022 Dec 01.
Publication Year :
2022

Abstract

Background: In clinical settings, tooth preparation for prefabricated zirconia crowns (PZCs) in the primary dentition varies widely. However, knowledge about the biomechanical behavior of PZCs in various clinical settings is limited. This study was conducted to evaluate the biomechanical behavior of PZCs in different clinical settings using 3-dimensional finite element analysis.<br />Methods: 3-dimensional models of the PZC, cement, and tooth with six different conditions were simulated in primary molar teeth, incorporating cement thickness (100, 500, and 1000 μm) and cement type (resin-modified glass ionomer cement and resin cement). A total of 200 N of occlusal force was applied to the models, both vertically and obliquely as representative cases. A general linear model univariate analysis with partial eta-squared (ηp <superscript>2</superscript> ) was performed to evaluate the relative effects of the variables.<br />Results: The overall stress of tooth was increased as the cement space increases under oblique loading. The von Mises stress values of the resin cements were significantly higher than those of the resin-modified glass ionomer cements for all cement thicknesses (p < .05). The effect size of the cement type (η <subscript>p</subscript> <superscript>2</superscript>  = .519) was more dominant than the cement thickness (η <subscript>p</subscript> <superscript>2</superscript>  = .132) in the cement layer.<br />Conclusions: Within the limits of this study, cement type has a greater influence on the biomechanical behavior of PZCs than cement thickness.<br /> (© 2022. The Author(s).)

Details

Language :
English
ISSN :
1472-6831
Volume :
22
Issue :
1
Database :
MEDLINE
Journal :
BMC oral health
Publication Type :
Academic Journal
Accession number :
36456927
Full Text :
https://doi.org/10.1186/s12903-022-02596-2