Dederichs, M.; Joedecke, P.; Weber, C.-T.; Guentsch, A. Functional Load Capacity of Teeth with Reduced Periodontal Support: A Finite Element Analysis. Bioengineering2023, 10, 1330.
Dederichs, M.; Joedecke, P.; Weber, C.-T.; Guentsch, A. Functional Load Capacity of Teeth with Reduced Periodontal Support: A Finite Element Analysis. Bioengineering 2023, 10, 1330.
Dederichs, M.; Joedecke, P.; Weber, C.-T.; Guentsch, A. Functional Load Capacity of Teeth with Reduced Periodontal Support: A Finite Element Analysis. Bioengineering2023, 10, 1330.
Dederichs, M.; Joedecke, P.; Weber, C.-T.; Guentsch, A. Functional Load Capacity of Teeth with Reduced Periodontal Support: A Finite Element Analysis. Bioengineering 2023, 10, 1330.
Abstract
The purpose of this study was to investigate the functional load capacity of the periodontal ligament (PDL) in a full arch maxilla and mandible model using numerical simulation. The goal of was to determine the functional load pattern in multi- and single rooted teeth with full and reduced periodontal support. CBCT data were used to create 3D-models of a maxilla and mandible. The DICOM dataset was used to create a CAD-model. For a precise description of the surfaces of each structure (enamel, dentin, cementum, pulp, PDL, gingiva, bone), each tooth was segmented separately, and the biomechanical characteristics were considered. A Finite-Element-Analysis (FEA) software computed the biomechanical behavior of stepwise increased force of 700N in cranial and 350N in ventral direction of the muscle approach of the Masseter muscle. The periodontal attachment (cementum-PDL-bone contact) was subsequently reduced in 1mm increments and the simulation repeated. Quantitative (pressure, tension, and deformation) and qualitative (color-coded images) data were recorded and descriptively analyzed. The teeth with the highest load capacities were the upper and lower molars (0.4-0.6MPa), followed by the premolars (0.4-0.5MPa) and canines (0.3-0.4MPa) when vertically loaded. Qualitative data showed that the area with the highest stress in the PDL were for single rooted teeth the cervical and apical area and for molars additionally the furcation roof. In both, single- and multi rooted teeth the gradual reduction of the bone levels caused an increase of the load on the remaining PDL. Cervical and apical areas as well as the furcation roof are the zones with the highest functional stress. The more bone loss, the higher the mechanical load on the residual periodontal supporting structures.
Keywords
Finite Element Analysis; Periodontium; Bone Loss; Attachment Loss; Maxilla; Mandible; Teeth
Subject
Engineering, Bioengineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
