Human peri-implant bone response to turned and oxidized titanium implants inserted and retrieved after 2 months.
OBJECTIVE
The aim of this study was to evaluate the influence of oxidized surface on bone-to-implant contact percentage (BIC%) as well as the bone density within the threads area (BD%) in human bone after 2 months of unloaded healing.


METHODS
Seven subjects (mean age 45.57 +/- 10.45 years) received 2 micro-implants each during conventional implant surgery in the posterior maxilla. The implants that presented turned and oxidized surfaces served as control and test, respectively. After the healing period, the implants and the surrounding tissue were removed and prepared for ground sectioning and analysis.


RESULTS
Two turned implants were found to be clinically unstable at the time of retrieval. Histometric evaluation showed that the mean of BIC% was 17.40 +/- 14.16% and 32.19 +/- 15.68% to turned and oxidized surfaces, respectively. The BD% was 22.13 +/- 19.06% for turned surface and 50.40 +/- 18.35% for oxidized surface.


CONCLUSIONS
The histologic data from this preliminary study suggest that the oxidized micro-implants surface presented better mean values of BIC% and BD% than turned micro-implants after a short healing time.
Shibli
Jamil Awad
JA
Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, São Paulo, Brazil. jshibli@ung.br
Grassi
Sauro
S
de Figueiredo
Luciene Cristina
LC
Feres
Magda
M
Iezzi
Giovanna
G
Piattelli
Adriano
A
D000328:Adult; D003758:Dental Implantation, Endosseous / Q000295:instrumentation* / Q000379:methods; D015921:Dental Implants; D005260:Female; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation*; D008297:Male; D008875:Middle Aged; D010084:Oxidation-Reduction; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry
D015921:Dental Implants; D014025:Titanium