Evaluation of the Integrity of a Human Molar under Compressive Loading Using 3-D Axial Tomography

Abstract:

This paper reports a structural integrity analysis of a first human molar tooth. In this study, the loading condition caused by different sort of food was simulated. In order to cover a wide range, the resultant stress field evaluation was evaluated when a compressive load varied between 70N and 150 N. The finite element model was created using 3-D Computed Tomography and SCAN IP V.4 software. In the experimental analysis, reflective photoelasticity was used and the specimens were loaded with a Universal Testing Machine. The results show that stress concentrations are developed over the crown surface. The range of the top von Mises stress, for the loading cases mentioned above, is between 1.05 MPa and 3.46 MPa. The tooth geometry distributes gently the resultant stress on its root.

• Periodical: Applied Mechanics and Materials (Volume 70)
• Pages: 267-272
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.70.267
• Online since: August 2011
• Authors: Juan Alfonso Beltrán-Fernández, Y. Espinal Gutiérrez, Luis Héctor Hernández-Gómez, Guillermo Urriolagoitia-Calderón, D. Gómez-Medina, B. Espinal-Gutiérrez, Guillermo Urriolagoitia-Sosa, E. Rodríguez-Escalante
• Keywords: 3-D Axial Tomography (TAC), First Molar, Structural Integrity, Tooth Decay

References

[1] JE Arsenault, M Mora-Plazas, y Forero, Provision of a school snack is associated with vitamin B-12 status, linear growth, and morbidity in children from Bogota, Colombia e nutrition, J. Nutr. September, vol. 139, No. 9, p. pp.1744-1750. (2009).

DOI: 10.3945/jn.109.108662

[2] David P. Cappelli, Connie C. Mobley, Prevention in clinical oral health care, Elsevier Health Sciences, p.49. (2008).

[3] Discacciati de Lértora, S; Matínez de Meyer, L Primer Molar permanente: Riesgos y afecciones en sus primeros años, Revista FOUNNE. Nº 2, p. pp.23-28 (1994).

[4] Serra, M.D., Gambareli, F.R. and Gavião, M.B. A one-year intra-individual evaluation of maximum bite force in children wearing a removable partial dental prosthesis. J. Dent. Child (Chic) 74, 171 – 176. (2007).

[5] Al Shalan, Thakib A.; Al Askar, Amal, In vitro effect of different concentrations of iron on the initiation of dental caries: pilot study. King Saud University - College of Dentistry, SDJ - Saudi Dental Journal [The]; 18 (2): 86-90 (2006).

[6] Paphangkorakit J, Thothongkam N, Supanont N. Chewing-side determination of three food textures. J Oral Rehabil; Vol. 33, p. pp.2-7. (2006).

DOI: 10.1111/j.1365-2842.2006.01535.x

[7] Olthoff LW, Van der Bilt A, De Boer A, Bosman F. Comparison of force-deformation characteristics of artificial and several natural foods for chewing experiments. J Texture Stud; 17: 275-289. (1986).

DOI: 10.1111/j.1745-4603.1986.tb00553.x

[8] Hernández-Gómez, Luis-Hector; Urriolagoitia-Calderon, Guillermo; González-Rebatú, Alejandro; Urriolagoitia-Sosa, Guillermo; Galán-Vera, Manuel-Mauricio; Escalante-Rodríguez, Enrique, Assessment of the Structural Integrity of C3-C5 Cervical Porcine Vertebrae Model based on 2-D Classic CAD, 3-D Scanner and 3-D Computed Tomography, Mechanics of Biological Structures, Springer in Germany. (2011).

DOI: 10.1007/978-3-642-22131-6_1

[9] Howell AH, Brudevold F., Vertical forces used during chewing of food, J Dent Res 29: 133-136. (1950).

DOI: 10.1177/00220345500290020401

[10] John D. Rugh and William K. Solberg, The measurement of human oral forces, Behavior Research Methods, Volume 4, Number 3, 125-128, DOI: 10. 3758/BF03207846. (2011).

[11] V.K. Goel, S.C. Khera, J.L. Ralston, K.H. Chang. Stresses at the dentin enamel junction of human teeth-a finite element investigation,. Journal of Prosthetic Dentistry. Vol. 66, p. pp.451-459. (1991).

DOI: 10.1016/0022-3913(91)90504-p

[12] H.E. Lee, C.L. Lin, C.H. Wang, C.H. Cheng, C.H. Chang. Stresses at the cervical lesion of maxillary premolar - a finite element investigation,. Journal of Dentistry. Vol. 30 Nº 7-8, p. pp.283-290. (2002).

DOI: 10.1016/s0300-5712(02)00020-9

[13] L.G. Selna, HT. Shillingberg, PA. Kerr. Finite element analysis of dental structures – axisymmetric and plane stress idealizations,. Journal of Biomedical Material Research. Vol. 9, p. pp.237-252. (1975).

DOI: 10.1002/jbm.820090212

[14] Patricio Cendoya1 Jorge Hernández, Emilio Dufeu1, COMPUTER ANALYSIS OF NON-CAVITY CERVICAL LESIONS IN AN UPPER PREMOLAR, Ingeniare. Revista chilena de ingeniería, vol. 15 Nº 2, pp.169-173. (2007).

[15] Photoelastic Division Measurements Group: Photoelastic Materials. Bulletin: S-116-H. Measurements Group Inc, Raleigh. (1996).