Anshul Chaudhry1, Maninder S Sidhu2, Girish Chaudhary3, Seema Grover4, Nimisha Chaudhry5, Ashutosh Kaushik6. 1. Senior lecturer, Department of Orthodontics, Christian Dental College, Christian Medical College, Ludhiana, Punjab, India. Electronic address: dr.anshulchaudhry@gmail.com. 2. Director, postgraduate studies; professor and head, Department of Orthodontics, Shree Guru Gobind Singh Tricentenary Dental College, Hospital and Research Institute, Budhera, Gurgaon, Haryana, India. 3. Senior lecturer, Department of Orthodontics, Baba Jaswant Singh Dental College, Hospital & Research Institute, Ludhiana, Punjab, India. 4. Professor, Department of Orthodontics, Shree Guru Gobind Singh Tricentenary Dental College, Hospital and Research Institute, Budhera, Gurgaon, Haryana, India. 5. Formerly, postgraduate student, Department of Prosthodontics, Kothiwal Dental College, Moradabad, Uttar Pradesh, India. 6. Private practice, Rohatak, Haryana, India.
Abstract
INTRODUCTION: The aim of this study was to evaluate the effects of a fixed functional appliance (Forsus Fatigue Resistant Device; 3M Unitek, Monrovia, Calif) on the mandible with 3-dimensional finite element stress analysis. METHODS: A 3-dimensional finite element model of the mandible was constructed from the images generated by cone-beam computed tomography of a patient undergoing fixed orthodontic treatment. The changes were studied with the finite element method, in the form of highest von Mises stress and maximum principal stress regions. RESULTS: More areas of stress were seen in the model of the mandible with the Forsus compared with the model of the mandible in the resting stage. CONCLUSIONS: This fixed functional appliance studied by finite element model analysis caused increases in the maximum principal stress and the von Mises stress in both the cortical bone and the condylar region of the mandible by more than 2 times.
INTRODUCTION: The aim of this study was to evaluate the effects of a fixed functional appliance (Forsus Fatigue Resistant Device; 3M Unitek, Monrovia, Calif) on the mandible with 3-dimensional finite element stress analysis. METHODS: A 3-dimensional finite element model of the mandible was constructed from the images generated by cone-beam computed tomography of a patient undergoing fixed orthodontic treatment. The changes were studied with the finite element method, in the form of highest von Mises stress and maximum principal stress regions. RESULTS: More areas of stress were seen in the model of the mandible with the Forsus compared with the model of the mandible in the resting stage. CONCLUSIONS: This fixed functional appliance studied by finite element model analysis caused increases in the maximum principal stress and the von Mises stress in both the cortical bone and the condylar region of the mandible by more than 2 times.
Authors: Gero Stefan Michael Kinzinger; Jörg Alexander Lisson; Linda Frye; Ulrich Gross; Jan Hourfar Journal: Clin Oral Investig Date: 2017-04-01 Impact factor: 3.573