Technical Briefs

One Versus Two Implant-Retained Dentures: Comparing Biomechanics Under Oblique Mastication Forces

[+] Author and Article Information
Jarosław Żmudzki

Associate Professor

Grzegorz Chladek

Associate Professor
Faculty of Mechanical Engineering,
Silesian University of Technology,
Konarskiego 18a,
Gliwice 44-100, Poland

Jacek Kasperski

Associate Professor
Department of Prosthetic Dentistry,
Medical University of Silesia,
pl. Akademicki 17,
Bytom 41-902, Poland

Leszek A. Dobrzański

Faculty of Mechanical Engineering,
Silesian University of Technology,
Konarskiego 18a,
Gliwice 44-100, Poland

1Corresponding author.

Contributed by the Bioengineering Division of ASME for publication in the JOURNAL OF BIOMECHANICAL ENGINEERING. Manuscript received October 27, 2012; final manuscript received February 11, 2012; accepted manuscript posted March 8, 2013; published online April 24, 2013. Assoc. Editor: Barclay Morrison.

J Biomech Eng 135(5), 054503 (Apr 24, 2013) (4 pages) Paper No: BIO-12-1520; doi: 10.1115/1.4023985 History: Revised February 11, 2012; Received October 27, 2012; Accepted March 08, 2013

The results from clinical tests of single implant-retained dentures (SIDs) are quite promising. However, the biomechanics of SIDs are still insufficiently determined. The aim of the study was to compare the implant loads and pressures beneath one and two implant-retained dentures (TIDs) under oblique mastication forces. The finite element method was used to conduct a model analysis in order to compare loading of the denture attachment onto the implant that accompanies oblique mastication forces in the cases of SIDs and TIDs. The possibility of a denture detaching and sliding on the mucous membrane surface was simulated. The SID solution faced a more remarkable tilt in the direction of the mastication forces, a higher pressures on the mucous membrane surface, and higher implant loadings. The hingelike restraints in the TID favored utilization of the support in the posterior area. The higher pressure values for the SID can be confusing and could lead to inaccurate conclusions about the acceptability of the SID. In the TID, the same areas of the mucous membrane were persistently loaded, independent of the occlusal force direction. In contrast, in the SID the full freedom of rotational movement enhances alternating use of the mucous membrane. This finding explains the more frequent sores in the mucous membrane beneath the TID than beneath the SID.

Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.


Cordioli, G., Majzoub, Z., and Castagna, S., 1997, “Mandibular Overdentures Anchored to Single Implants: A Five-Year Prospective Study,” J. Prosthet. Dent., 78, pp. 159–165. [CrossRef] [PubMed]
Krennmair, G., and Ulm, C., 2001, “The Symphyseal Single-Tooth Implant for Anchorage of a Mandibular Complete Denture in Geriatric Patients: A Clinical Report,” Int. J. Oral Maxillofac. Implants, 16(1), pp. 98–104. [PubMed]
Liddelow, G. J., and Henry, P. J., 2007, “A Prospective Study of Immediately Loaded Single Implant-Retained Mandibular Overdentures: Preliminary One-Year Results,” J. Prosthet. Dent., 97(6), pp. 126–137. [CrossRef]
Harder, S., Wolfart, S., Egert, C., and Kern, M., 2011, “Three-Year Clinical Outcome of Single Implant-Retained Mandibular Overdentures—Results of Preliminary Prospective Study,” J. Dent., 39, pp. 656–661. [CrossRef] [PubMed]
Maeda, Y., Horisaka, M., and Yagi, K., 2008, “Biomechanical Rationale for a Single Implant-Retained Mandibular Overdenture: An In Vitro Study,” Clin. Oral Implants Res., 19, pp. 271–275. [CrossRef] [PubMed]
Józefowicz, W., 1970, “Results of Studies on Elasticity Moduli of the Soft Tissues of the Denture-Bearing Area,” [Protet. Stomatol., 20(3), pp. 171–176 (in Polish). [PubMed]
Cheng, Y. Y., Li, J. Y., Fok, S. L., Cheung, W. L., and Chow, T. W., 2010, “3D FEA of High-Performance Polyethylene Fiber Reinforced Maxillary Dentures,” Dent. Mater., 26(9), pp. e211–e219. [CrossRef] [PubMed]
Chun, H. J., Park, D. N., Han, C. H., Heo, S. J., Heo, M. S., and Koak, J. Y., 2005, “Stress Distributions in Maxillary Bone Surrounding Overdenture Implants With Different Overdenture Attachments,” J. Oral Rehabil., 32(3), pp. 193–205. [CrossRef] [PubMed]
Daas, M., Dubois, G., Bonnet, A. S., Lipinski, P., and Rignon-Bret, C., 2008, “A Complete Finite Element Model of a Mandibular Implant-Retained Overdenture With Two Implants: Comparison Between Rigid and Resilient Attachment Configurations,” Med. Eng. Phys., 30(2), pp. 218–225. [CrossRef] [PubMed]
Ranc, H., Elkhyat, A., Servais, C., Mac-Mary, S., Launay, B., and Humbert, Ph., 2006, “Friction Coefficient and Wettability of Oral Mucosal Tissue: Changes Induced by a Salivary Layer,” Colloids Surf., A, 276, pp. 155–161. [CrossRef]
Sajewicz, E., 2009, “Effect of Saliva Viscosity on Tribological Behaviour of Tooth Enamel,” Tribol. Int., 42(2), pp. 327–332. [CrossRef]
Kikuchi, M., Ghani, F., and Watanabe, M., 1999, “Method for Enhancing Retention in Complete Denture Bases,” J. Prosthet. Dent., 81, pp. 399–403. [CrossRef] [PubMed]
Kenney, R., and Richards, M. W., 1998, “Photoelastic Stress Patterns Produced by Implant-Retained Overdentures,” J. Prosthet. Dent., 80, pp. 559–564. [CrossRef] [PubMed]
Zmudzki, J., Chadek, G., and Kasperski, J., 2012, “The Influence of a Complete Lower Denture Destabilization on the Pressure of the Mucous Membrane Foundation,” Acta Bioeng. Biomech., 14(3), pp. 67–73. [PubMed]
Alsabeeha, N. H. M., Payne, A. G. T., De Silva, R. K., and Thomson, W. M., 2011, “Mandibular Single-Implant Overdentures: Preliminary Results of a Randomised-Control Trial on Early Loading With Different Implant Diameters and Attachment Systems,” Clin. Oral Implants Res., 22, pp. 330–337. [CrossRef] [PubMed]
Zmudzki, J., and Chadek, W., 2008, “Elastic Silicone Matrices as a Tool For Load Relief in Overdenture Implants,” Acta Bioeng. Biomech., 10(4), pp. 7–14. [PubMed]
Cain, J. R., and Mitchell, D. L., 1998, “Soft Liner-Retained, Implant-Supported Overdenture: A Technical Note,” Int. J. Oral Maxillofac. Implants, 13(6), pp. 857–860. [PubMed]
Kiat-Amnuay, S., Khan, Z., and Gettleman, L., 1999, “Overdenture Retention of Four Resilient Liners Over an Implant Bar,” J. Prosthet. Dent., 81(5), pp. 568–573. [CrossRef] [PubMed]
Kiat-Amnuay, S., Mekayarajjananonth, T., Cron, C. C., Khan, Z., and Gettleman, L., 1999, “Simplified Methods for Fabricating Tissue-Supported Implant-Retained Overdentures With Retention From a Resilient Liner,” J. Prosthet. Dent., 82, pp. 242–245. [CrossRef] [PubMed]
Chladek, G., 2008, “Durability Evaluation of a Friction Couple Intended for Implantological Stabilization of Complete Dentures,” Acta Bioeng. Biomech., 10(3), pp. 7–12.
Ohguri, T., Kawano, F., Ichikawa, T., and Matsumoto, N., 1999, “Influence of Occlusal Scheme on the Pressure Distribution Under a Complete Denture,” Int. J. Prosthodont., 12(4), pp. 353–358. [PubMed]
Roedema, W. H., 1976, “Relationship Between the Width of The Occlusal Table and Pressures Under Dentures During Function,” J. Prosthet. Dent., 36, pp. 24–34. [CrossRef] [PubMed]


Grahic Jump Location
Fig. 2

Loads of attachments and pressures beneath dentures for SID and TID: (a) for the vertical 100 N occlusal force, (b) for the simulated oblique mastication force of 100 N vertical and 100 N horizontal, and (c) for a soft mucous membrane

Grahic Jump Location
Fig. 1

Finite element analysis conditions: model of a denture on an atrophied denture foundation, occlusal forces, and directional constraints RX, RY, and RZ for the calculation of implant loads for SID or TID



Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In