A biomechanical evaluation of the stability of small and large diameter dental implants: preliminary study

Kakemoto, Hirofumi; Kumar, Akshay; Schulz, Eloy; Lozada, Jaime; Saha, Subrata

doi:10.1109/sbec.1996.493152

Cited by 1 publication

(1 citation statement)

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“…In [13] the authors experimentally compared the immediate pull-out force of a large diameter implant (4.5 mm) with a standard size implant (3.25 mm). The maximum pull-out force was 16% greater for the larger implants, but was not statistically significant; similar to our results.…”

Section: Resultsmentioning

confidence: 99%

Modeling Pull-Out Test of Dental Implants

Dollár

Meade

2003

Biomed. Eng. Appl. Basis Commun.

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1.INTRODUCTIONDental implants are becoming an increasingly popular alternative treatment for replacing missing teeth. Instead of using a bridge that spans between teeth, a permanent replacement tooth is attached to an implant in the mandible or maxilla.In this study, dental implants of the ingrowth type are considered. These implants rely on bony ingrowth for fixation. Typically they are coated with hydroxyapatite that helps the formation of interfacial bone adjacent to the implant [1]. To install the implant, a hole slightly smaller than the outside diameter of the implant is drilled in the mandible or maxilla. The implant is then press-fit into place and covered with soft tissue until healing is completed. This creates a Over time, the gumline will recede somewhat, exposing some of the implant. This resorption is apparently due to a stress shielding effect caused by the implant. However, this does not constitute a failure of the implant. The implant is considered to have failed if the initial bond did not form properly and a prosthetic tooth could not be installed, or if it becomes loose after the installation of the tooth. In both cases the implant would have to be revised, causing the patient to undergo the entire procedure again.A significant problem with implants is that they can loosen and cause severe pain, necessitating surgical revision [2-3], Although the exact mechanism of loosening is unknown, the debonding (fracture) of the bone-implant interface may be the controlling factor in this process. The strength of this interface depends on factors such as cancellous bone structure

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Section: Resultsmentioning

confidence: 99%