Browse > Article

Finite Element Analysis of Bone Stress Caused by Horizontal Misfit of Implant Supported Three-Unit Fixed Prosthodontics  

Lee, Seung-Hwan (Department of Dentistry Graduate School, Kyungpook National University)
Jo, Kwang-Hun (Department of Prosthodontics, College of Dentistry, Kyungpook National University)
Publication Information
Journal of Dental Rehabilitation and Applied Science / v.28, no.2, 2012 , pp. 147-161 More about this Journal
Abstract
This study is to assess the effect of horizontal misfit of an implant supported 3-unit fixed prosthodontics on the stress development at the marginal cortical bone surrounding implant neck. Two finite element models consisting of a three unit fixed prosthodontics and an implant/bone complex were constructed on a three dimensional basis. The three unit fixed prosthodontics were designed either shorter (d=17.8mm model) or longer (d=18.0mm model) by 0.1mm than the span of two implants placed at the mandibular second premolar and second molar areas 17.9mm apart. Fitting of the fixed prosthodontics onto the implant abutments was simulated by a total of 6 steps, that is to say, 0.1mm displacement per each step, using DEFORM 3D (ver 6.1, SFTC, Columbus, OH, USA) program. Stresses in the fixed prosthodontics and implants were evaluated using von-Mises stress, maximum compressive stress, and radial stress as necessary. The d=17.8mm model assembled successfully on to the implant abutments while d=18.0mm model did not. Regardless if the fixed prosthodontics fitted onto the abutments or not, excessively higher stresses developed during the course of assembly trial and thereafter. On the marginal cortical bone around implants during the assembly, the peak tensile and compressive stresses were as high as 186.9MPa and 114.1MPa, respectively, even after the final sitting of the fixed prosthodontics (for d=17.8mm model). For this case, the area of marginal bone subject to compressive stresses above 55MPa, equivalent of the $4,000{\mu}{\varepsilon}$, i.e. the reported threshold strain to inhibit physiological remodeling of human cortical bone, extended up to 2mm away from implant during the assembly. Horizontal misfit of 0.1mm can produce excessively high stresses on the marginal cortical bone not only during the fixed prosthodontics assembly but also thereafter.
Keywords
Finite Element Analysis; Horizontal Misfit; Implant Supported Fixed Prosthodontics;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Sugiura T, Horiuchi K, Sugimura1 M, Tsutsumi S. Evaluation of threshold stress for bone resorption around screws based on in vivo strain measurement of miniplate. J Musculoskel Neuron Interact 2000;1: 165-70.
2 Rubin CT, Lanyon LE. Regulation of bone mass by mechanical strain magnitude. Calcif Tissue Int 1985; 37:411-7.
3 Sones AD. Complications with osseointegrated implants. J Prosthet Dent 1989;62:581-5.
4 Spector MR, Donovan TE, Nicholls J. An evaluation of impression techniques for osseointegrated implants. J Prosthet Dent 1990;63:444-7.
5 Worthington P, Bolender CL, Taylor TD. The Swedish system of osseointegrated implants: Problems and complications encountered during a 4-year trial period. Int Oral Maxillofac Implants 1987;2:77-84.
6 Klineberg IJ, Murray GM. Design of superstructures for osseointegrated implants. Swed Dent J 1985;28(suppl):63-69.
7 Millington ND, Leung T. Inaccurate fit of implant superstructures. Part 1: Stresses generated on the superstructure relative to the size of fit discrepancy. Int J Prosthodont 1995;8:511-6.
8 Yanase RT, Binon PP, Jemt T, Gulbransen HJ, Parel S. How do you test a cast framework fit for a full-arch fixed implant supported prosthesis? (Current Issues Forum). Int J Oral Maxillofac Implants 1994;9:469-74.
9 Nam HJ. Effect of implant preload on the marginal bone stresses studied by three dimensional finite element analysis. Ph.D thesis. Kyungpook National University, 2011.
10 Kitagawa T, Tanimoto Y, Nemoto K, Aida M. Influence of cortical bone quality on stress distribution in bone around dental implant. Dent Mater J 2005;24:219-24.
11 Sevimay M, Turhan F, Kilicarslan MA, Eskitascioglu G. Three-dimensional finite element analysis of the effect of different bone quality on stress distribution in an implant-supported crown. J Prosthet Dent 2005; 93:227-34.
12 Chun SG. Influence of microthread design on marginal cortical bone strain developing during implant placement: A Finite element analysis. Ph D Thesis, 2010, KNU, Daegu, Korea.
13 Worthington P, Bolender CL, Taylor TD. The Swedish system of osseointegrated implants: problems and complications encountered during a 4-year trial period. Int J Oral Maxillofac Implants 1987;2:77-84.
14 Sones AD. Complications with osseointegrated implants. J Prosthet Dent 1989;62:581-5.
15 Patterson EA. Passive fit: Meaning, significance and assessment in relation to implant-supported prostheses. In: Naert EI. passive fit of implantsupported superstructures: Friction or reality? proceedings of an international symposium. Leuven:Leuven University Press; 1995, p. 17-28.
16 Sekine H, Komiyama Y, Potta H, Yoshida K. Mobility characteristics and tactile sensitivity of osseointegrated fixture-supporting systems. In: van Steenberghe D, Albrektsson T, Branemark PI, Henry PJ, Holt R, Liden G. Tissue integration in oral and maxillofacial reconstruction. Amsterdam: Excerpta Medica; 1986, p. 326-32.
17 Tautin FS. Impression making for osseointegrated dentures. J Prosthet Dent 1985;54:250-1.
18 Vigolo P, Fonzi F, Majzoub Z, Cordioli G. An evaluation of impression techniques for multiple internal connection implant prostheses. J Prosthet Dent 2004;92:470-6.
19 Naconecy MM, Teixeira ER, Shinkai RS, Frasca LC, Cervieri A. Evaluation of the accuracy of 3 transfer techniques for implant-supported prostheses with multiple abutments. Int J Oral Maxillofac Implants 2004;19:192-8.
20 Choi JH, Kim CW, Lim YJ, Kim MJ, Lee SH. The effect of screw tightening sequence and tightening method on the detorque value in implant-supported superstructure. J Korean Acad Prosthodont 2007;45: 653-64.
21 Henry PJ. An alternative method for the production of accurate casts and occlusal records in osseointegrated implant rehabilitation. J Prosthet Dent 1987;58:694-7.
22 Wee AG. Comparison of impression materials for direct multi-implant impressions. J Prosthet Dent 2000;83:323-31.
23 Assif D, Marshak B, Schmidt A. Accuracy of implant impression techniques. Int J Oral Maxillofac Implants 1996;11:216-22.
24 Bartlett DW, Greenwood R, Howe L. The suitability of head-ofimplant and conventional abutment impression techniques for implant-retained three unit fixed prosthodonticss: an in vitro study. Eur J Prosthodont Restor Dent 2002;10:163-6.
25 Frost HM. Wolff's law and bone's structural adaptation to mechanical usage: an overview for clinicians. Angle Orthod 1994;64:175-88.
26 Adell R, Lekholm U, Rockler B, Branemark PI. A 15-year study of osseointegrated implants in the treatment of the edentulous jaw. Int J Oral Surg 1981;10:387-416.
27 Hämmerle CH, Brägger U, Bürgin W, Lang NP. The effect of subcrestal placement of the polished surface of ITI implants on marginal soft and hard tissues. Clin Oral Implants Res 1996;7:111-9.
28 Hermann JS, Cochran DL, Nummikoski PV, Buser D. Crestal bone changes around titanium implants. A radiographic evaluation of unloaded nonsubmerged and submerged implants in the canine mandible. J Periodontol 1997;68:1117-30.
29 Cochran DL, Hermann JS, Schenk RK, Higginbottom FL, Buser D. Biologic width around titanium implants. A histometric analysis of the implantogingival junction around unloaded and loaded nonsubmerged implants in the canine mandible. J Periodontol 1997;68:186-98.
30 Hansson S. Surface roughness parameters as predictors of anchorage strength in bone:a critical analysis. J Biomech 2000;33:1297-303.
31 Alomrani AN, Hermann JS, Jones AA, Buser D, Schoolfield J, Cochran DL. The effect of a machined collar on coronal hard tissue around titanium implants: a radiographic study in the canine mandible. Int J Oral Maxillofac Implants 2005; 20: 677-86.
32 Tada S, Stegaroiu R, Kitamura E, Miyakawa O, Kusakari H. Influence of implant design and bone quality on stress/strain distribution in bone around implants: a 3-dimensional finite element analysis. Int J Oral Maxillofac Implants 2003;18:357-68.
33 Lindhe, Berglundh T, Ericsson I, Liljenberg B, Marinello C. Experimental breakdown of peri-implant and periodontal tissues. A study in the beagle dog. Clin Oral Implants Res 1992;3:9-16.
34 Lang NP, Bragger U, Walther D, Beamer B, Kornman KS. Ligature-induced peri-implant infection in cynomolgus monkeys. I. Clinical and radiographic findings. Clin Oral Implants Res 1993;4:2-11.
35 Clelland NL, Gilat A. The effect of abutment angulation on stress transfer for an implant. J Prosthodont 1992;1:24-8.
36 Misch CE, Suzuki JB, Misch-Dietsh FM, Bidez MW. A positive correlation between occlusal trauma and peri-implant bone loss: literature support. Implant Dent 2005;14:108-16.
37 Isidor F. Influence of force on peri-implant bone. Clin Oral Implants Res 2006;17:8-18.
38 Petrie CS, Williams JL. Comparative evaluation of implant designs: influence of diameter, length, and taper on strains in the alveolar crest. A threedimensional finite-element analysis. Clin Oral Implants Res 2005;16:486-94.
39 Chun HJ, Shin HS, Han CH, Lee SH. Influence of implant abutment type on stress distribution in bone under various loading conditions using finite element analysis. Int J Oral Maxillofac Implants 2006;21: 195-202.
40 Holmes DC, Loftus JT. Influence of bone quality on stress distribution for endosseous implants. J Oral Implantol 1997;23: 104-11.