Journal of International Society of Preventive and Community Dentistry

ORIGINAL ARTICLE
Year
: 2020  |  Volume : 10  |  Issue : 3  |  Page : 279--285

Numerical three-dimensional finite element modeling of cavity shape and optimal material selection by analysis of stress distribution on class V cavities of mandibular premolars


Swathi Pai1, Vishal Bhat2, Vathsala Patil3, Nithesh Naik4, Swetank Awasthi4, Nithin Nayak4 
1 Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal, Manipal, Karnataka, India
2 Department of Pharmacology, Melaka Manipal Medical College, Manipal, Karnataka, India
3 Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Manipal, Karnataka, India
4 Department of Mechanical and Manufacturing Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India

Correspondence Address:
Dr. Nithesh Naik
Department of Mechanical and Manufacturing Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka.
India

Aim: Adhesive restoration does not depend primarily on the configuration of the shape of the cavity. Under varying loading conditions, it is essential to know the stress concentration and load transfer mechanism for distinct cavity shapes. The aim of this study was to evaluate and compare the biomechanical characteristics of various cavity shapes, namely oval, elliptical, trapezoidal, and rectangular shapes of class V cavities on mandibular premolars restored with amalgam, glass ionomer cement, and Cention N using three-dimensional (3D) finite element analysis. Materials and Methods: A 3D prototype of a mandibular premolar was generated by Digital Imaging and Communications in Medicine (DICOM) images obtained from the cone beam computed tomography and imported to 3D modeling software tool, SpaceClaim. The four distinct load magnitudes of 100, 150, 200, and 250N were applied as a pressure load perpendicular to the lingual plane of the lingual cusp of the occlusal surface (normal load) and at 45° to same (oblique load). The stress distribution patterns and the maximum von Mises stresses were analyzed and compared. Results: The occlusal stresses were distributed from the force loading point in an approximate actinomorphic pattern, and when the force load was close to the margin, the stress was much greater. Conclusion: Ovoid cavity showed lesser stress concentration and deformation for each of the tested restorative material.


How to cite this article:
Pai S, Bhat V, Patil V, Naik N, Awasthi S, Nayak N. Numerical three-dimensional finite element modeling of cavity shape and optimal material selection by analysis of stress distribution on class V cavities of mandibular premolars.J Int Soc Prevent Communit Dent 2020;10:279-285


How to cite this URL:
Pai S, Bhat V, Patil V, Naik N, Awasthi S, Nayak N. Numerical three-dimensional finite element modeling of cavity shape and optimal material selection by analysis of stress distribution on class V cavities of mandibular premolars. J Int Soc Prevent Communit Dent [serial online] 2020 [cited 2021 Jan 28 ];10:279-285
Available from: https://www.jispcd.org/article.asp?issn=2231-0762;year=2020;volume=10;issue=3;spage=279;epage=285;aulast=Pai;type=0