title: Histomorphometric analysis of pure titanium implants with porous surface versus rough surface.
abstract: The purpose of this study was to analyze the bone repair around commercially pure titanium implants with rough and porous surface, fabricated using powder metallurgy technique, after their insertion in tibiae of rabbits. Seven male rabbits were used. Each animal received 3 porous-surface implants in the left tibia and 3 rough-surface implants in the right tibia. The rabbits were sacrificed 4 weeks after surgery and fragments of the tibiae containing the implants were submitted to histological and histomorphometric analyses to evaluate new bone formation at the implant-bone interface. Means (%) of bone neoformation obtained in the histomorphometric analysis were compared by Student's t-test for paired samples at 5% significance level.. The results of the histological analysis showed that osseointegration occurred for both types of implants with similar quality of bone tissue. The histomorphometric analysis revealed means of new bone formation at implant-bone interface of 79.69 +/- 1.00% and 65.05 +/- 1.23% for the porous- and rough-surface implants, respectively. Statistically significant difference was observed between the two types of implants with respect to the amount new bone formation (p<0.05). In conclusion, the porous-surface implants contributed to the osseointegration because they provide a larger contact area at implant-bone interface.
authors.affiliation: Department of Bioscience and Buccal Diagnosis, São José dos Campos Dental School, State University of São Paulo (UNESP), São José dos Campos, SP, Brazil.
authors.forename: Aline Scalone
authors.initials: AS
authors.lastname: Brentel
authors.forename: Luana Marotta Reis
authors.initials: LM
authors.lastname: de Vasconcellos
authors.forename: Marize Varella
authors.initials: MV
authors.lastname: Oliveira
authors.forename: Mário Lima de Alencastro
authors.initials: ML
authors.lastname: Graça
authors.forename: Luis Gustavo Oliveira
authors.initials: LG
authors.lastname: de Vasconcellos
authors.forename: Carlos Alberto Alves
authors.initials: CA
authors.lastname: Cairo
authors.forename: Yasmin Rodarte
authors.initials: YR
authors.lastname: Carvalho