Osseointegration
Mostrando 13-24 de 100 artigos, teses e dissertações.
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13. Daily melatonin administration improves osseointegration in pinealectomized rats
Abstract The hypothesis of this study was that the peri-implant bone healing of the group of pinealectomized rats would differ from the control group. The samples were subjected to immunohistochemical, microtomographic (total porosity and connectivity density), and fluorochrome (mineralized surface) analyses. Objectives The goal of this study was to invest
J. Appl. Oral Sci.. Publicado em: 10/07/2018
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14. Oral implant osseointegration model in C57Bl/6 mice: microtomographic, histological, histomorphometric and molecular characterization
Abstract Despite the successful clinical application of titanium (Ti) as a biomaterial, the exact cellular and molecular mechanisms responsible for Ti osseointegration remains unclear, especially because of the limited methodological tools available in this field. Objective: In this study, we present a microscopic and molecular characterization of an oral i
J. Appl. Oral Sci.. Publicado em: 11/06/2018
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15. Titanium Coating with Hydroxyapatite and Chitosan Doped with Silver Nitrate
Biomaterials are effective alternatives for tissue substitution, including the bone tissue, since they do not pose risks of transmission of diseases or immune rejection. Nowadays, there is an interest in new materials capable of being associated with other substances which favor bone formation, especially natural biopolymers, in particular chitosan, which ma
Mat. Res.. Publicado em: 01/02/2018
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16. The effects of subcutaneous injection of nicotine on osseointegration of machined and anodized implants in rabbits
Abstract Purpose: To evaluate the influence of subcutaneous injection nicotine in osseointegration process on different implant surfaces. Methods: Twenty-two male rabbits were distributed into two groups according to the subcutaneous injections: (1) nicotine 3 mg/day/kg and (2) 0.9 % NaCI 3 mL/day/kg, three times a day; subgroups were then designated-mach
Acta Cir. Bras.. Publicado em: 2018-01
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17. Effects of continual intermittent administration of parathyroid hormone on implant stability in the presence of osteoporosis: an in vivo study using resonance frequency analysis in a rabbit model
Abstract Objective: This study aimed to evaluate the effects of continual intermittent administration of parathyroid hormone (PTH) on implant stability in the presence of osteoporosis, using rabbit models. Material and Methods: Fifteen female New Zealand white rabbits underwent ovariectomy and were administered glucocorticoids to induce osteoporosis, follo
J. Appl. Oral Sci.. Publicado em: 2017-10
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18. Fibroblast and pre-osteoblast cell adhesive behavior on titanium alloy coated with diamond film
It is well known that titanium alloys have mechanical strengths comparable to steels, as well as high corrosion resistance. Also, they have the advantage of promoting osseointegration, when used in medical and dental implants. This work aims to describe the adhesion properties of fibroblast and osteoblast cells on the surface of titanium aluminum vanadium al
Mat. Res.. Publicado em: 03/08/2017
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19. SHEEP AS AN EXPERIMENTAL MODEL FOR BIOMATERIAL IMPLANT EVALUATION
ABSTRACT Objective: Based on a literature review and on our own experience, this study proposes sheep as an experimental model to evaluate the bioactive capacity of bone substitute biomaterials, dental implant systems and orthopedics devices. The literature review covered relevant databases available on the Internet from 1990 until to date, and was suppleme
Acta ortop. bras.. Publicado em: 2016-10
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20. Osseointegration aspects of placed implant in bone reconstruction with newly developed block-type interconnected porous calcium hydroxyapatite
ABSTRACT Artificial bone has been employed to reconstruct bone defects. However, only few reports on implant placement after block bone grafting exist. Objectives The purpose of this study was to evaluate the osseointegration of dental implant in bone reconstructions with interconnected porous calcium hydroxyapatite (IP-CHA). Material and Methods The IP-
J. Appl. Oral Sci.. Publicado em: 2016-08
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21. Oxide Formation on NiTi Surface: Influence of the Heat Treatment Time to Achieve the Shape Memory
AbstractSeveral studies regarding superficial treatments of Nitinol (NiTi) shape-memory have been developed aiming to the improve corrosion resistance and to block the Ni release to adjacent tissues. The necessary heat treatment to achieve the shape memory effect normally occurs at temperatures between 500 and 600 °C. However, titanium oxide (TiO2) is forme
Mat. Res.. Publicado em: 2015-10
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22. Influence of Implant Surfaces on Osseointegration: A Histomorphometric and Implant Stability Study in Rabbits
Resumo: O objetivo deste estudo foi avaliar a estabilidade e osseointegração de implantes com superfícies com diferentes molhabilidades empregando análise de frequência de ressonância (RFA) e histomorfometria (contato implante ósseo, BIC, e fração de área óssea ocupada, BAFO), nos períodos de 2 e 4 semanas em tíbias de coelhos. Trinta e dois imp
Braz. Dent. J.. Publicado em: 2015-10
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23. Effect of chronic stress on implant osseointegration into rat's mandible
PURPOSE:To compare chronic physical stressed with normal tense animals regarding implant osseointegration in the rat mandible.METHODS:Thirty six Wistar rats were anesthesiaded and blunt instruments were used to expose and empty their alveolar inferior nerve. One implant (2.2 x 4mm) was installed into the mandibular canal. Following 72 hours, all rats were eq
Acta Cir. Bras.. Publicado em: 2015-09
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24. Surface Finishes for Ti-6Al-4V Alloy Produced by Direct Metal Laser Sintering
The implant’s surface is responsible for direct interaction with the human body. For cases where osseointegration must be favored and the risk of bacteria proliferation is lower, rough surfaces are more suitable, while for implants where the risks are higher, a reduced surface roughness is required. This study aimed to analyze and produce different surface
Mat. Res.. Publicado em: 2015-08