Mohamed Ahmed Alkhodary1, Abdelraheim Emad Eldin Abdelraheim2, Abd Elaleem Hassan Elsantawy3, Yousef Hamad Al Dahman4, Mohammed Al-Mershed4. 1. Assistant Professor, Department of Prosthetic Dental Science, College of Dentistry, Qassim University, KSA. 2. Associate Professor, Mechanical Engineering Dept., College of Engineering, Qassim University. 3. Lecturer, Department of Maxillofacial Surgery & Diagnostic Sciences, College of Dentistry, Qassim University. 4. College of Dentistry, Qassim University.
Abstract
OBJECTIVES: It takes a lot of training on patients for both undergraduate to develop clinical sense as regards to the placement of dental implants in the jaw bones, also, the models provided by the dental implant companies for training are usually made of strengthened synthetic foams, which are far from the composition, and tactile sense provided by natural bone during drilling for clinical placement of dental implants. METHODOLOGY: This is an in-vitro experimental study which utilized bovine femur bone, where the shaft of the femur provided the surface compact layer, and the head provided the cancellous bone layer, to provide a training model similar to jaw bones macroscopic anatomy. Both the compact and cancellous bone samples were characterized using mechanical compressive testing. RESULTS: The elastic moduli of the cancellous and cortical femur bone were comparable to those of the human mandible, and the prepared training model provided a more lifelike condition during the drilling and placement of dental implants. CONCLUSION: The composite bone model developed simulated the macroscopic anatomy of the jaw bones having a surface layer of compact bone, and a core of cancellous bone, and provided a better and a more natural hands-on experience for placement of dental implants as compared to plastic models made of polyurethane.
OBJECTIVES: It takes a lot of training on patients for both undergraduate to develop clinical sense as regards to the placement of dental implants in the jaw bones, also, the models provided by the dental implant companies for training are usually made of strengthened synthetic foams, which are far from the composition, and tactile sense provided by natural bone during drilling for clinical placement of dental implants. METHODOLOGY: This is an in-vitro experimental study which utilized bovine femur bone, where the shaft of the femur provided the surface compact layer, and the head provided the cancellous bone layer, to provide a training model similar to jaw bones macroscopic anatomy. Both the compact and cancellous bone samples were characterized using mechanical compressive testing. RESULTS: The elastic moduli of the cancellous and cortical femur bone were comparable to those of the human mandible, and the prepared training model provided a more lifelike condition during the drilling and placement of dental implants. CONCLUSION: The composite bone model developed simulated the macroscopic anatomy of the jaw bones having a surface layer of compact bone, and a core of cancellous bone, and provided a better and a more natural hands-on experience for placement of dental implants as compared to plastic models made of polyurethane.
Authors: M Sanz; E Treasure; W van Dijk; C Feldman; H Groeneveld; M Kellett; J Pazdera; L Rouse; V Sae-Lim; A Seth-Smith; E Yen; P Zarkowski Journal: Eur J Dent Educ Date: 2008-02 Impact factor: 2.355