Browse > Article
http://dx.doi.org/10.14368/jdras.2013.29.3.224

The Effects of Screw Retained Prosthesis Misfit & Cantilever on Stress Distribution in Bone Around the Implant  

Lee, Jae-In (Department of Prosthodontics, College of Dentistry, Wonkwang University)
Kim, Tae-Young (Department of Prosthodontics, College of Dentistry, Wonkwang University)
Cho, Hye-Won (Department of Prosthodontics, College of Dentistry, Wonkwang University)
Publication Information
Journal of Dental Rehabilitation and Applied Science / v.29, no.3, 2013 , pp. 224-235 More about this Journal
Abstract
A passively fitting prosthesis is an essential prerequisite to attain long-lasting success and maintenance of osseointegration. However, true "passive fit" can not be achieved with the present implant-supported prosthesis fabrication protocol. Many clinical situations are suitably treated with cantilevered implant-supported fixed restorations. The purpose of this study was to compare the stress distribution pattern and magnitude in supporting tissues around ITI implants with cantilevered, implant-supported, screw-retained fixed prosthesis according to the fitness of superstructures. Photoelastic model was made with PL-2 resin (Measurements, Raleigh, USA) and three ITI implants (${\phi}4.1{\times}10mm$) were placed in the mandibular posterior edentulous area distal to the canine. Anterior and posterior extended 4-unit cantilevered FPDs were made with different misfit in the superstructures. 4 types of prosthesis were made by placing a $100{\mu}m$ gap between the abutment and the crown on the second premolar and/or the first molar. Photoelastic stress analysis were carried out to measure the fringe order around the implant supporting structure under simulated loading conditions (30 lb).
Keywords
Cantilever; Photoelastic analysis; Screw retained fixted prosthesis;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Brunski JB. Biomaterials and biomechanics in dental implant design. Int J Oral and Maxillofac Implants 1988;3:85-97.
2 Lekholm U, van Steenberghe D, Herrmann I, et al. Osseointegrated implants in the treatment of partially edentulous jaws. A prospective 5-year multicenter study. Int J Oral Maxillofac Implants 1994;9:627-635.
3 Buser D, Mericske-Stern R, Bernard JP, et al. Long term evaluation of non submerged ITI implants. Part 1: 8-year life table analysis of a prospective multicenter study with 2359 implants. Clin Oral Implant Res 1997;8:161-172.   DOI   ScienceOn
4 Tolman DE, Laney WR. Tissue-integrated prosthteses complication. Int J Oral Maxillofac Implants 1992;7:477-484.
5 Sones AD. Complication with osseointegrated implants. J Prosthet Dent 1989;62:581-585.   DOI   ScienceOn
6 Kallus T, Bessing C. Loose gold screws frequently occur in full-arch fixed prostheses supported by osseointegrated implants after 5 years. Int J Oral Maxillofac Implants 1994;9:169-178.
7 Assif D, Marshak B, Schmidt A. Accuracy of implant impression techniques. Int J Oral Maxillofac Implants 19996;11:216-222.
8 Michalakis KX, Hirayama H, Garefis PD. Cement-retained versus screw-retained implant restorations: a critical review. Int J Oral Maxillofac Implants. 2003;18:719-28.
9 Heckmann SM, Kari M, Wichmann MG, et al. Cement fixation and screw retention: parameters of passive fit. An in vitro study of three-unit implantsupported fixed partial dentures. Clin Oral Implants Res 2004;15:466-473.   DOI   ScienceOn
10 Mcglumphy EA, Campagni WW, Peterson LJ. A comparison of the stress transfer characteristics of a dental implant with a rigid or a resilient internal element. J Prosthet Dent 1989;62:586-593.   DOI   ScienceOn
11 Stegaroiu R. Sato T, Kusakari H, Miyakawa P. Influence of restoration type on stress distribution in bone around implants: a three-dimensional finite element analysis. Int J Oral Maxillofac Implants 1998;13:82-90.
12 Landry KE, Johnson PF, Parks VJ, et al. A photoelastic study to determine the location of the nonrigid connector in a five-unit intermediate abutment prosthesis. J Prosthet Dent 1987;57:454-457.   DOI   ScienceOn
13 Wee AG, Aquilino SA, Schneider RL. Strategies to achieve fit in implant prosthodontics: A Review of the literature. Int J Prosthodontics 1999;12:167-178.
14 Jemt T. Failures and complications in 391 consecutively inserted fixed prostheses supported by Branemark implants in edentulous jaws: a study of treatment from the time of prosthesis placement to the first annual check up. Int J Oral Maxillofac Implants 1991;6:270-276.
15 Jemt T, Book K. Proshthesis misfit and marginal bone loss in osseointegrated implant patients. Int J Oral Maxillofac Implants 1996;11:620-625.
16 Kunavisarut C. Lang LA. Stoner BR, et al. Finite element analysis on dental implant supported prostheses without passive fit. J Proshodont 2002;11:30-40.
17 Guichet DL, Caputo AA, Choi HJ, et al. Passivity of fit and marginal opening in screw- or cement-retained implant fixed partial denture designs. Int J Oral Maxillofac Implants 2000;15:239-246.