Stress analysis in single molar tooth

• Published in: Materials Science & Engineering C Vol. 33; no. 2; pp. 691 - 698
• Main Authors: Merdji, Ali, Mootanah, Rajshree, Bachir Bouiadjra, Bel Abbes, Benaissa, Ali, Aminallah, Laid, Ould Chikh, El Bahri, Mukdadi, Sam
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.03.2013
• Subjects: Biomechanical Phenomena - physiology; Biomechanics; Computer Simulation; Finite Element Analysis; Finite element method; Humans; Models, Biological; Molar - physiology; Molar tooth; Stress; Stress, Mechanical; Finite element method; Biomechanics; Molar tooth; Stress
• ISSN: 0928-4931; 1873-0191
• DOI: 10.1016/j.msec.2012.10.020

The human tooth faces different stresses under environments of different loading conditions, these loading produces major factors in weakness of the tooth and bone structure. The need to save natural teeth has prompted the development of novel and complex techniques in endodontology, prosthodontics and periodontology. Despite a poor long-term prognosis and some prejudice to local bone, considerable efforts have been exerted for the realization of these techniques. Nowadays, the 3D finite element analysis (FEA) is one of the more recently used techniques for stress analysis in single human tooth under different loading cases. The von Mises stress distribution indicated that the greatest effort area of tooth lies at the base of crown up to the gingival line with varying intensities in the different loading cases. The highest stress in the cortical bone was predominantly found around the cervical region of the tooth and lowest in the cancellous bone and periodontal ligament (PDL). The PDL is a soft tissue, and it could function as an intermediate cushion element which absorbs the impact force and uniformly transfers the occlusal forces into the surrounding bone. [Display omitted] ► The applied loading to the crown of the tooth is transmitted to the cortical bone. ► The tooth has a better resistance compared to any other component. ► Lateral occlusal loads significantly increased the stress values.