ABSTRACT
Atualmente a Implantodontia é uma especialidade que promove uma excelente previsibilidade nas reabilitações estético-funcionais simples e complexas, graças ao desenvolvimento científico e tecnológico que ocorreu desde a descoberta da osseointegração. Um planejamento complexo, utilizando tomografias e programas computadorizados permitem, atualmente, ao Cirurgião Dentista, determinar a posição e a profundidade exata em que os implantes serão instalados previamente à cirurgia com o auxílio de um guia cirúrgico. Estas ferramentas permitem a confecção prévia de uma prótese provisória que será instalada imediatamente após a precisa fixação dos implantes durante o procedimento cirúrgico. O objetivo deste trabalho é descrever uma técnica modificada de instalação de implantes osseointegrados com a utilização de carga imediata e cirurgia sem retalho - minimamente invasiva, no mesmo dia do procedimento cirúrgico.
Currently the Implant Science is a speciality that promotes an excelent predictable aesthetic and functional result a simple and complex rehabiblitation, thanks to scientific and technological development that has occured since the discovery of the osseointegration. The use of computed tomography and computer programs can now help the dentist to determine the exact position and depth in which the implants will be installed prior to surgery using surgical guide. These tools allow the construction of a temporay prosthesis that will be installed immediately after the precise setting of the implants. The am of this paper is to describe a modified technique for installation of osseointegrated implants with the use of immediate load and through a minimally invasive surgery (a flapless surgery).
Subject(s)
Surgery, Computer-Assisted , Dental Implants , OsseointegrationABSTRACT
The purpose of this study is to analyze the bone remodeling process after the placement of threaded implants with rough (RBM) and hydroxyapatite coated surfaces (HA) in rabbit tibias using polyfluorochrome sequential labeling. Histomorphometry was performed in order to quantify the amount of each label deposited during the healing period. This work demonstrates the possibility of periodic identification of apatite deposition during bone remodeling around titanium and ceramic implants. It has been concluded that the polyfluorochrome sequential labeling is an important tool for identification of bone remodeling after the insertion of titanium and ceramic implants inside rabbit tibias.
Subject(s)
Bone Remodeling/physiology , Dental Implants , Tibia/anatomy & histology , Animals , Anthraquinones , Dental Materials , Durapatite , Fluoresceins , Models, Animal , Rabbits , TetracyclineABSTRACT
Nowadays, there are many kinds of implants with different covering layers. The aim of these wide spectra is to discover the material that has the best possible biocompatibility. The presence of so many kinds of covering layers indicates that this aim has not been reached until now. The implant anchorage in the bone is very important for the stability of the element that has to support much pressure when under use. As it is known, the implant/bone interface does not present the ideal result expected by all professionals. In the laboratory there are possibilities of researching many kinds of implants--under different techniques of insertion. This will lead to the best methods and materials available. Titanium is the basic material used by many authors and needs no further discussion. So far it is the material with the best biocompatibility. The aim of this work is to observe and study the bone healing in the interface between a titanium implant and bone under light microscopic technique. Commercial pure titanium implants with a smooth surface were inserted in rabbit's tibias where they remained for eight weeks. The amount of bone inside the implant threads was quantified by the use of a stereologic method. The histological results indicated that an intense remodeling process of the cortical bone was found close to the implant surface and in the stereometry a higher amount of the new bone formation was also observed in the cortical tibia at the implant/bone interface.
