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The Influence of Molar Extraction in Mandible on the Bone Remodeling  Process under Different Chewing Conditions Cover

The Influence of Molar Extraction in Mandible on the Bone Remodeling Process under Different Chewing Conditions

Open Access
|Mar 2025

Figures & Tables

Fig. 1.

Geometric models prepared for the study: a) basic anatomical model before extraction; b) anatomical model after tooth extraction

Fig. 2.

The cross-section A-A of the molar tooth and the mandibular bone

Fig. 3.

Representation of the force vectors exerted by the main muscles acting on the mandible. The vectors are labeled (e.g. RM: Right Masseter, LT: Left Temporalis) to correspond with the muscle names listed in Table 1. The directions and magnitudes of the vectors were determined based on the values provided in Tab. 1

Fig. 4.

Cross-section of the tooth and mandibular bone highlighting the zone: a) for cancellous bone; b) for cortical bone

Fig. 5.

Distribution of HMH stress [MPa] in cancellous bone before tooth extraction

Fig. 6.

Distribution of HMH stress [MPa] in cancellous bone after tooth extraction

Fig. 7.

Distribution of HMH stress [MPa] in cortical bone before tooth extraction

Fig. 8.

Distribution of HMH stress [MPa] in cortical bone after tooth extraction

Fig. 9.

Division into areas for: a) cancellous bone; b) cortical bone

Change in cortical bone density [g/cm3] in the analyzed areas for the model after tooth extraction compared to the model before tooth extraction

RegionIncisiorsMolarsMolars rightMolars left
CR1 [%]0102−9−12
CR2 [%]−1227−9−2
CR3 [%]28528522
CR4 [%]−749−53
CR5 [%]323−41270
CR6 [%]−7218100
CR7 [%]−10−490
CR8 [%]0480−17
CR9 [%]0300
CR10 [%]0800

Change in cancellous bone density in the analyzed areas [g/cm3] for the model after tooth extraction compared to the model before tooth extraction

RegionIncisiorsMolarsMolars rightMolars left
CN1 [%]938−7250527
CN2 [%]82−56103725
CN3 [%]80059483
CN4 [%]−24−18281415
CN5 [%]37018949
CN6 [%]68020590

Values exerted by the muscles(17)

Muscles descriptionABC
Middle temporalis [N]5.764.063.0
Deep masseter [N]21.248.917.1
Superficial masseter [N]76.1114.2137.0
Anterior temporalis [N]1.691.6115.4
Medial pterygoid [N]136.4104.9146.9
DOI: https://doi.org/10.2478/ama-2025-0017 | Journal eISSN: 2300-5319 | Journal ISSN: 1898-4088
Language: English
Page range: 148 - 152
Submitted on: Dec 3, 2024
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Accepted on: Jan 12, 2025
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Published on: Mar 31, 2025
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2025 Anna Tomaszewska, published by Bialystok University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.