Highly crystalline MP-1 hydroxylapatite coating Part II: In vivo performance on endosseous root implants in dogs

The in viva integration strength and degree of bone apposition were compared for oral endosseous implants with different plasma‐sprayed hydroxylapatite (HA) coatings. Pullout strength measurements and histological analysis were used to compare two different commercially available coatings from the s...

Full description

Saved in:
Bibliographic Details
Published in:Clinical oral implants research 1999-08, Vol.10 (4), p.257-266
Main Authors: Burgess, Ann V., Story, Brooks J., Wagner, William R., Trisi, Paolo, Pikos, Michael A., Guttenberg, Steven A.
Format: Article
Language:English
Subjects:
Animals
Coated Materials, Biocompatible
crystallinity
Crystallization
dental implant
Dental Implantation, Endosseous
Dental Implants
Dentistry
Dogs
Durapatite - chemistry
endosseous
hydroxapaitite
Materials Testing
Osseointegration
plasma-sprayed
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The in viva integration strength and degree of bone apposition were compared for oral endosseous implants with different plasma‐sprayed hydroxylapatite (HA) coatings. Pullout strength measurements and histological analysis were used to compare two different commercially available coatings from the same manufacturer. One coating does not receive a post‐plasma‐spray treatment and contains about 75% crystalline HA. The other coating is treated with the MP‐l process, a pressurized hydrothermal post‐plasma‐spray process, which increases the coating composition to approximately 95% crystalline HA without changing the coating's adhesive or cohesive strength. Comparisons were made in dogs after healing times of 3 and 15 weeks in the mandible. No significant differences were found in either case between the two coatings. Two different methods were used to determine the degree of bone apposition at 15 weeks. Both methods confirmed that the MP‐1 process does not affect the osseointegration rate of plasma‐sprayed HA coatings. Qualitative histology data suggest that the treated coating is more stable than the control coating, especially in cases of direct soft tissue attachment to the implant. The present data suggest that extensive dissolution of calcium phosphate components into surrounding tissue is not a necessary precursor for direct 1 apposition of bone to HA‐coated implants.
ISSN:0905-7161
1600-0501
DOI:10.1034/j.1600-0501.1999.100402.x