IJCRR - vol 06 issue 05, March, 2014
AN EVALUATION OF THE STRESS DISTRIBUTION IN CORTICAL AND CANCELLOUS BONE AROUND A MICROIMPLANT UNDER VARIOUS LOADING CONDITIONS -AN FESA STUDY
Author: P. Premanand
Aim: This study is to evaluate the pattern of stress distribution and bone failure around the Absoanchor micro-implant under various loading conditions and various force levels. Materials and Methods: FESA was originally introduced as a numerical form of analysis in aeronautical engineering and has the potential to obtain a computer generated mathematic model of a real object of complicated shape with its different physical material properties in order to identify the stresses and displacement. Finite element structural models of the Absoanchor implant, cortical bone and cancellous (trabecular) bone of both maxilla and mandible were generated using solid modeling software NASTRAN. In this present study three types of loads were applied on head of implant to simulate different loading conditions. The forces applied were in the range of 25-300gms in both horizontal and diagonal plane, while forces of 10-100gms were applied in vertical plane. Results: There is no bone deformation seen in this study in all the three loading conditions. Conclusion: Since there is no bone deformation for the normal range of force in all the three planes the absoanchor titanium micro-implant placed in maxilla and mandible provide stable anchorage for orthodontic force.
Keywords: Cortical Bone, Cancellous Bone, Absoanchor Microimplant, FESA.
P. Premanand. AN EVALUATION OF THE STRESS DISTRIBUTION IN CORTICAL AND CANCELLOUS BONE AROUND A MICROIMPLANT UNDER VARIOUS LOADING CONDITIONS -AN FESA STUDY International Journal of Current Research and Review. vol 06 issue 05, March, 32-42
1. Alberto R. Mazzocchi and Silvia Bernini. Osseointegrated implants for maximum orthodontic anchroage. JCO 1998 July. 412- 415.
2. Hee-Moon Kyung, Hyo-Sang Park, SeongMin Bae, IL-Bong Kim and Jae-Hyun Sung. Development of orthodontic Micro implants for intra oral anchorage. JCO 2003, vol. 37, No.6: 321-328.
3. Wail N. Al-Rifaie and Ashok K. Govil. Finite element method – for structural Engineers (A Basic Approach).
4. Lavernia C J, Cook S D, Weinstein A M, Klawitter J J 1981 An analysis of stresses in a dental implant system. Journal of Biomechanics 14: 555-560.
5. Huiskes R, Chao E Y 1983 A survey of finite element analysis in orthopedic biomechanics: the first decade. Journal of Biomechanics 16: 385- 409.
6. Dincer Bozkaya, Siman Muftu and Ali Muftu. Evaluation of load transfer characteristics of five different implants in compact bone at different load levels by finite element analysis. J. Prosthet. Dent 2004; 92:523-530.
7. Hee - Moon Kyung, Hyo-Sang Park, and JaeHyun Sung. A simple method of molar uprighting with micro- implant anchorage. JCO – 2002 vol. 36, No. 10, 592-596.
8. Mete. I Fanuscu, Hung V. Vu and Bernard Poncelet. Implant Biomechanics in grafted sinus: A Finite element analysis. J. Oral. Implantology 2004, vol-30, No: 2; 59-68.
9. Cruz et al. Three- Dimensional finite element stress analysis of a cuneiform geometry implant. Int. J. Oral maxillofacial implants 2003; 18: 675-684.
10. Shinichiro Tada, Roxana Stegaroiu, Eriko Kitamura, Osamu Myakawa and Haruka Kusakari. Influence of implant design and bone quality on stress/strain distribution in bone around implants: A Finite element Analysis. Int. J. Oral. Maxillofacial. Implants 2003; 18: 357-368.
11. Monica Vasquez et al. Initial stress differences between sliding and sectional mechanics with the Endosseous implant as anchorage: A 3- Dimensional Finite element analysis. Angle orthod 2001; 71: 247-256.
12. Nilgun- Akin –Nergiz, Ibrahim Nergiz, Axel Schulz, Nejat Arpak and Wilhelm Niedermeier. Reaction of peri-impalnt tissues to continuous loading of osseointegrated implants. AJO 1998; 114: 292-298.
13. Lucie Himmlova, Tatjana Dostalova, Alois Kacovsky and Svatava Konvickova. Influence of implant length and diameter on stress distribution: A finite element analysis. J.Prosthet. Dent. 2004; 91:20-25.
14. Higuchi KW and Slak JM. The use of titanium fixture for Intra oral anchorage to facilitate orthodontic tooth movement. Int. J. Oral Maxillofacial Implants 1991; 69: 401-407.
15. Ismail S.F.H. and A.S. Johal et al. The role of implants in orthodontics. Journal of Orthodontics, 2002, vol. 29, 239-245.
16. Miyawaki et al. Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage. AJO 2003, 124: 373-378.
17. Masumoto T, Hayashi I, Kawamurn A, Tanuku K and Kasai K. Relationship among facial type, buccolingual molar inclination and cortical bone thickness of the mandible. E JO 2001; 23: 15-23.
18. Martin RB et al Skeletal tissue mechanics. Springer 1998; 127-178.
19. Laurent Pierrisnard, Guy Hure, Michel Barquins and Daniel Chappard. Two Dental implants Designed for immediate loading: A Finite Element Analysis. Int J. Oral Maxillofacial. Implants. 2002; 17: 353-362.
20. William R. Proffit et al. Contemporary orthodontics. Third Edition.