Comparison of Implant Body Designs and Threaded Designs of Dental Implants: A 3-dimensional Finite Element Analysis

Heng-Li Huang; Chin-Han Chang; Jui-Ting Hsu; Faligatter, Alison M.; Ching-Chang Ko
July 2007
International Journal of Oral & Maxillofacial Implants;Jul/Aug2007, Vol. 22 Issue 4, p551
Academic Journal
Purpose: Stress analysis was performed for various implant designs using 3-dimensional finite element analysis approaches. Materials and Methods: Six implant designs were included: 3 parallel-sided implants (no thread, triangular thread, and squared thread), 2 stepped configurations (non- thread and triangular thread), and a tapered body of implant with squared thread. All threads had spiral characteristics. The mandibular model was constructed from computed tomographic (CT) images of a human mandible, and the material properties were anisotropic (different in different directions). A 100-N oblique force was applied at a 45-degree angle to the long axis of the implants at the buccal cusp as the loading condition. Results: Compared with cylindric implants, threaded implants (either triangular or squared) demonstrated increased peak stress at the crestal bone. The bone stress of stepped implants was decreased in the cortical region but was increased in the trabecular region. However, both threaded and stepped designs showed decreased interfacial stresses of bone near the valleys of the threaded and stepped areas. The tapered design decreased stresses by up to 32% in the cortical region and 17% in the trabecular region. Conclusions: Although threaded implants could not decrease the peak stress at the crestal bone, both threaded and stepped designs show an ability to dissipate the interfacial stresses of bone. The use of tapered implants could reduce peak stress in both cortical and trabecular bone.


Related Articles

  • Modeling of Stress Distribution in Dental Implant in Frontal Part of Mandible. Németh, Dušan; Kučera, Ján; Lofaj, František; Ivančo, Vladimír // Key Engineering Materials;2014, Vol. 606, p137 

    The aim of this work is the modeling of the stress distribution in cortical and trabecular bone of model frontal part of mandible by FEM analysis using linear static methods applying monocortical and bicortical fixation of dental implant. Depending on the position of the screw thread with regard...

  • Stress Analysis of Porous Rooted Dental Implants. WEINSTEIN, ALLAN M.; KLAWITTER, JEROME J.; ANAND, SUBHASH C.; SCHUESSLER, RICHARD // Journal of Dental Research;Sep1976, Vol. 55 Issue 5, p772 

    A two-dimensional plane stress finite element analysis of porous rooted dental implants was performed. The results of this analysis were compared to results obtained from mechanical tests performed on actual implanted specimens. The appropriate selection of interface material properties was...

  • Influence of Implant Abutment Type on Stress Distribution in Bone Under Various Loading Conditions Using Finite Element Analysis. Heoung-Jae Chun; Ha-Shik Shin; Chong-Hyun Han; Soo-Hong Lee // International Journal of Oral & Maxillofacial Implants;Mar/Apr2006, Vol. 21 Issue 2, p195 

    Purpose: The purpose of this study was to investigate the effect of 3 different abutment types on the stress distribution in bone with inclined loads using finite element analysis. Materials and Methods: The 1-body, internal-hex, and external-hex implant systems were modeled to study the effect...

  • Three-Dimensional Finite Element Analysis of Titanium and Yttrium-Stabilized Zirconium Dioxide Abutments and Implants. Çağlar, Alper; Turhan Bal, Bilge; Karakoca, Seçil; Aydın, Cemal; Yılmaz, Handan; Sarısoy, Şenol // International Journal of Oral & Maxillofacial Implants;2011, Vol. 26 Issue 5, p961 

    Purpose: The purpose of this study was to compare the von Mises (vM), compressive, and tensile stresses occurring on implants, abutments, and surrounding bone using three-dimensional finite element analysis (FEA) in three simulations in the anterior maxilla: a single titanium implant with a...

  • Biomechanical Effect of a Zirconia Dental Implant-Crown System: A Three-Dimensional Finite Element Analysis. Chih-Ling Chang; Chen-Sheng Chen; Tze Cheung Yeung; Ming-Lun Hsu // International Journal of Oral & Maxillofacial Implants;2012, Vol. 27 Issue 4, pe49 

    Purpose: The objective of this study was to analyze and compare the stresses in two different bone-implant interface conditions in anisotropic three-dimensional finite element models (FEMs) of an osseointegratedimplant of either commercially pure titanium or yttrium-partially stabilized zirconia...

  • Non-linear 3D Evaluation of Different Oral Implant-Abutment Connections. Streckbein, P.; Streckbein, R.G.; Wilbrand, J.F.; Malik, C.Y.; Schaaf, H.; Howaldt, H.P.; Flach, M. // Journal of Dental Research;Dec2012, Vol. 91 Issue 12, p1184 

    Micro-gaps and osseous overload in the implant-abutment connection are the most common causes of peri-implant bone resorption and implant failure. These undesirable events can be visualized on standardized three-dimensional finite element models and by radiographic methods. The present study...

  • Inaccurate Fit of Implant Superstructures. Part 1: Stresses Generated on the Superstructure Relative to the Size of Fit Discrepancy. Millington, Neil D.; Leung, Theresa // International Journal of Prosthodontics;Nov/Dec1995, Vol. 8 Issue 6, p511 

    This laboratory study used a photoelastic-coating technique to investigate the relationship between the magnitude and location of discrepancies of fit and the amount and distribution of surface stresses on an implant superstructure. For the test superstructure involving four abutments and a...

  • FEM ANALYSIS OF TWO DENTAL SCREW IMPLANTS POSITIONS FOR IMPROVING OSTEOINTEGRATION. NICA, eronica] M[ihaela; VLASCEANU, aniel; GHEORGHIU, oria // Annals of DAAAM & Proceedings;2012, Vol. 23 Issue 1, p0989 

    The article presents the numeric analysis, using the finite element method (MEF) of the implant - maxillary assembly with the purpose of establishing the correct implantation position depending on the bone configuration in the implantation zone of the patient and on the implant (screw) type,...

  • Computer-Aided Design and Transverse Strength of Screw-Retained Attachments. LaBarre, Eugene E.; Belser, Urs C.; Meyer, Jean-Marc; Watanabe, Larry // International Journal of Prosthodontics;Jul/Aug1994, Vol. 7 Issue 4, p323 

    Two commercially available, screw-retained attachments and an experimental attachment were modeled and analyzed by computerized finite element method. Mechanical test specimens were then developed. Cast rectangular bars were fabricated with the attachments or were joined by soldering at midspan...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics