Evaluation of Biomechanical Stability of Teeth Tissue According to Crown Materials: A Three-Dimensional Finite Element Analysis

Abstract

The biomechanical effects of dental tissue according to various dental crown materials were investigated using finite element analysis. Bone, prepared tooth, root canal, and periodontal ligament were modeled based on computed tomography. Depending on the characteristics of the crown material, it was classified into zirconia, hybrid ceramic, gold alloy, and acrylic resin. A loading force of 200 N was applied in the vertical direction to the occlusal surface of the crown, and analysis was performed under the condition that all interfaces were tied. The results demonstrate that the highest von Mises stress was shown in the prepared tooth of the acrylic resin model, which is a temporary prosthesis, and the pulpal pressure was also the highest. Additionally, among the final prosthesis, the highest stress was shown in the hybrid ceramic model prepared teeth. The properties of restoration materials can be a factor influencing the tooth structure. Thus, in order to make a correct decision when selecting a material for restorative treatment, it is necessary to understand, analyze, and evaluate the properties of these restoration materials.

FEA Comparison of the Mechanical Behavior of Three Dental Crown Materials: Enamel, Ceramic, and Zirconia

“…The computer-aided design (CAD) model was obtained from computed tomography (CT) scans of real premolar teeth, also considering the modeling conducted by Yoon et al [24]. Recomposition and layering were processed using the Autodesk Inventor 2023 ® CAD (2023, San Francisco, CA 94105, USA) environment.…”

“…The scan file coded in the .STL format was later converted into the .STP format. The thickness of the crown was selected from the recently published literature [24], where the thickness of the enamel layer was indicated to range from 0.3 mm to 2.5 mm (see Figure 2).…”

“…The scan file coded in the .STL format was later converted into the .STP format. The thickness of the crown was selected from the recently published literature [24], where the thickness of the enamel layer was indicated to range from 0.3 mm to 2.5 mm (see Figure 2). Subsequently, a 3D model of the premolar tooth suitable for accommodating the crown was prepared, which was then placed on the dentin [25,26], as it is shown in Figure 3.…”

Functional Load Capacity of Teeth with Reduced Periodontal Support: A Finite Element Analysis

“…Commonly used as an engineering tool to evaluate mechanical properties in automotive and aircraft engineering, the FE method quickly has relevant applications in medicine and dentistry as well. The FE method was applied to analyze the stress in periodontal tissues during tooth movement [15,16], to investigate stress and strain in the bone surrounding dental implants [17], to evaluate bone remodeling effects during orthodontic treatments [18], to assess the influence of different dental crown materials on the biomechanical properties of the tooth structure [19], and preliminary research was performed to investigate the change in stress distribution under a simulated bite force in a periodontally compromised tooth [12]. A wide range of possible applications confirms that the FE method, which has been implemented and adequately described for decades, is relevant for answering current questions about biomechanical properties.…”