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J Prosthet Dent. 1999 Oct;82(4):428-35.

Clinical and radiographic evaluation of early loaded free-standing dental implants with various coatings in beagle dogs.

Author information

1
Harvard School of Dental Medicine, Boston, MA 02115, USA.

Abstract

STATEMENT OF PROBLEM:

Immediate loading of implants may be a predictable treatment alternative when cross-arch stabilization with a fixed provisional is observed.

PURPOSE:

This study investigated the effect of immediate masticatory loading on the stability of single-standing dental implants with 4 different surfaces.

MATERIAL AND METHODS:

A total of 40 solid screw implants (diameter 3.3 mm, length 8 mm) were placed in the mandibles of 4 beagle dogs. Test groups included 3 hydroxyapatite (HA) coatings of titanium plasma-sprayed (TPS) implants. Implants with TPS alone served as control. Gold crowns were inserted 2 days after implant placement and the dogs were immediately put on a hard food diet. Implants were followed for 6 months after loading. Clinical and radiographic assessments of implants were performed at time of crown insertion (baseline) and after 1, 3, and 6 months of loading. The Periotest instrument was used for mobility measurements and radiographs were obtained for evaluation of peri-implant radiolucency and measurement of crestal bone changes.

RESULTS:

Of 40 implants, 39 displayed no discernible mobility, corresponding to successful clinical function. Peri-implant radiolucencies were absent for all but the 1 mobile implant. The reduction in crestal bone levels adjacent to the implants between baseline and 6 months was statistically significant (P <.0001). No statistically significant differences in crestal bone level changes over time were found between the various coatings demonstrating the absence of a treatment effect initiated by the surface coatings.

CONCLUSION:

In this study in beagle dogs, immediate masticatory loading of single-standing dental implants did not jeopardize tissue integration, provided the implants had excellent primary stability.

PMID:
10512961
DOI:
10.1016/s0022-3913(99)70029-6
[Indexed for MEDLINE]

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