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Design optimization of the outlet holes for bone crystal growing with bioactive materials in dental implants: Part II. number and shapes

  • Lee, Kangsoo (Department of Advanced Materials Engineering, Kyonggi University) ;
  • Kim, Geug Tae (Department of Nano-bio Chemical Engineering, Hannam University) ;
  • Lee, Yong Keun (Graduate School of NID Fusion Technology, Seoul National University of Science and Technology)
  • Received : 2013.01.21
  • Accepted : 2013.03.22
  • Published : 2013.04.30

Abstract

For further improvement of osseo-integration of bone crystal with a dental implant, a design optimization study is carried out for various holes inside its body to deliver bioactive materials and the effect of bioactive material injection on the bone crystal growing. When bioactive material is absorbed, the bone crystal can grow into holes, which would increase the strength of implant bonding as well as a surface integration. The stress concentrations near the uppermost outlet holes were reduced with increasing the number of outlet holes. A design improvement in the uppermost outlet was shown to be effective in reducing the stress concentration. For design parameters under consideration in this study, total area of outlet of 6.38 $mm^2$ and maximum stress of 1.114 MPa, which corresponds to type 6-C. It is due to the minimization of maximum stress and total area of outlet. The design of the outlet facing down was more effective in reducing the maximum stress value compared with a horizontal symmetry.

Keywords

References

  1. P.I. Braonemark, U. Breine, R. Adell, B.O. Hansson, J. Lindstrom and A. Ohlsson, "Intra-osseous anchorage of dental prostheses. I. Experimental studies", Scand. J. Plast. Reconstr. Surg. Hand Surg. 3 (1969) 81. https://doi.org/10.3109/02844316909036699
  2. E.J. Richter, "Basic biomechanics of dental implants in prosthetic dentistry", J. Prosthet. Dent. 61 (1989) 602. https://doi.org/10.1016/0022-3913(89)90285-0
  3. P.I. Braonemark, "Osseointegration and its experimental background", J. Prosthet. Dent. 50 (1983) 399. https://doi.org/10.1016/S0022-3913(83)80101-2
  4. I.P. Van Rossen, L.H. Braak, C. de Putter and K. de Groot, "Stress-absorbing elements in dental implants", J. Prosthet. Dent. 64 (1990) 198. https://doi.org/10.1016/0022-3913(90)90179-G
  5. S. Bertazzo and C.A. Bertran, "Morphological and dimensional characteristics of bone mineral crystals", Bioceramics 18 (2006) 7.
  6. M. Quirynen, N. Van Assche, D. Botticelli and T. Berglundh, "How does the timing of implant placement to extraction affect outcome?" Int. J. Oral Maxillofac. Implants 22 Suppl. (2007) 203.
  7. R. Crespi, P. Cappare, E. Gherlone and G.E. Romanos, "Immediate versus delayed loading of dental implants placed in fresh extraction sockets in the maxillary esthetic zone: a clinical comparative study", Int. J. Oral Maxillofac. Implants 23 (2008) 753.
  8. R. Palmer, "Ti-unite dental implant surface may be superior to machined surface in replacement of failed implants", J. Evid. Base. Dent. Pract. 7 (2007) 8. https://doi.org/10.1016/j.jebdp.2006.12.001
  9. J.K. Lee, Y.H. Ko and N.H. Lee, "Biocompatibility of porous hydroxyapatite ceramics prepared from bovine bones", J. Kor. Cryst. Growth Cryst. Tech. 22 (2012) 139. https://doi.org/10.6111/JKCGCT.2012.22.3.139
  10. S.J. Lim, H.Y. Shin, J.H. Kim and J.I. Lim, "Finite element analysis for czochralski growth process of sapphire single crystal", J. Kor. Cryst. Growth Cryst. Tech. 21 (2011) 193. https://doi.org/10.6111/JKCGCT.2011.21.5.193