Bone tissue formation around two titanium implant surfaces placed in bone defects filled with bone substitute material or blood clot: A pilot study.

Autor: Trento GDS; Department of Diagnosis and Surgery, School of Dentistry, Sao Paulo State University, Araraquara, Brazil., Spin-Neto R; Department of Dentistry and Oral Health, Section of Oral Radiology, Faculty of Health, Aarhus University, Aarhus, Denmark., Bassi APF; Department of Oral and Maxillofacial Surgery, School of Dentistry, São Paulo State University, Araçatuba, Brazil., Okamoto R; Department of Basic Sciences, School of Dentistry, Sao Paulo State University, Araçatuba, Brazil., Gabrielli MAC; Department of Diagnosis and Surgery, School of Dentistry, Sao Paulo State University, Araraquara, Brazil., Pereira-Filho VA; Department of Diagnosis and Surgery, School of Dentistry, Sao Paulo State University, Araraquara, Brazil.
Jazyk: angličtina
Zdroj: Clinical implant dentistry and related research [Clin Implant Dent Relat Res] 2019 Dec; Vol. 21 (6), pp. 1175-1180. Date of Electronic Publication: 2019 Nov 06.
DOI: 10.1111/cid.12855
Abstrakt: Objectives: The objective of this study was to evaluate the peri-implant bone tissue formation around titanium implants with different surface treatments, placed in bone defects filled or not with bone substitute material (BSM).
Materials and Methods: Ten animals were divided into two groups according to implant surface treatment. In each tibia, a bone defect was created followed by the placement of one implant. On the left tibia, the defect was filled with blood clot (BC), and on the right tibia, the defect was filled with biphasic hydroxyapatite/β-tricalcium-phosphate (HA/TCP) generating four subgroups: BC-N: blood clot and porous surface; BC-A: blood clot and porous-hydrophilic surface; HA/TCP-N: BSM and porous surface; HA/TCP-A: BSM and porous-hydrophilic surface. The animals were submitted to euthanasia 60 days after implant installation. After light-curing resin inclusion, the blocks containing the implant and the bone tissue were stained and evaluated by means of histomorphometry to assess the percentages of bone implant contact (% BIC). Data was normally distributed and the group differences were examined using the parametric tests of Two-Way ANOVA.
Results: The BC-A group presented the higher mean value of BIC (46.43%). The HA/TCP-A group presented the higher mean value of BIC. The porous-hydrophilic surfaces presented better results of BIC when compared to the porous surface in both conditions of defect filling. No statistically significant differences were found among all groups (95% confidence interval and P < .05).
Conclusion: According to histomorphometric analysis, after 60-days in a rabbit model, hydrophilic and hydrophobic surfaces have the same behavior in the presence or absence of HA/TCP.
(© 2019 Wiley Periodicals, Inc.)
Databáze: MEDLINE
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