RESUMO
One of the main problems in oral implantology today is peri-implantitis, which affects almost 20% of dental implants placed in patients. One of the most commonly used techniques to eliminate bacterial biofilm is the implantoplasty, that consists of the mechanical modification of the implant surface topography followed by treatments with chemical reagents for decontamination. In this study, the main aim is to evaluate the use of two different chemical treatments based on hypochlorous acid (HClO) and hydrogen peroxide (H2O2). For this purpose, 75 titanium grade 3 discs were treated with implantoplasty according to established protocols. Twenty-five discs were used as controls, 25 were treated with concentrated HClO and 25 were treated with concentrated HClO followed by treatment with 6% H2O2. The roughness of the discs was determined using the interferometric process. Cytotoxicity with SaOs-2 osteoblastic cells was quantified at 24 and 72 h, whereas bacteria proliferation using S. gordonii and S. oralis bacteria was quantified at 5 s and 1 min of treatment. The results showed an increase in the roughness values, the control discs had an Ra of 0.33 µm and those treated with HClO and H2O2 reached 0.68 µm. Cytotoxicity was present at 72 h, together with a significant proliferation of bacteria. These biological and microbiological results can be attributed to the roughness produced by the chemical agents that triggered bacterial adsorption while inhibiting osteoblast adhesion. The results indicate that even if this treatment can decontaminate the titanium surface after implantation, the produced topography will generate an environment that will not favor long-term performance.
RESUMO
BACKGROUND: The measurement of peri-implant marginal bone loss is currently carried out using digital methods of radiographic analysis assisted by various types of software. The purpose of this study was to compare the characteristics of three different softwares: specific radiology software for the development and visualization of radiological images in DICOM format (3Dicom Viewer®), advanced level software for professional editing of bitmap images (or raster graphics) (Adobe Photoshop®), and mid-level software for processing bitmap-type images, programmed in Java and in the public domain (ImageJ®). MATERIAL AND METHODS: It was verified that the three softwares used are valid for the measurement of peri-implant marginal bone loss provided that the appropriate protocol is fulfilled. RESULTS: The results showed no significant differences between Adobe Photoshop® and ImageJ® with respect to 3Dicom Viewer® in the measurements of mesial and distal bone loss of the implants, without influence of the dental sector where they were located. CONCLUSIONS: The measurements made with ImageJ® looked more like those of the control software (3Dicom Viewer®) than those of Adobe Photoshop®, but with a greater degree of dispersion. Thus, Adobe Photoshop® is a slightly inaccurate method but with less dispersion. Key words:Digital measurement, measurement software, peri-implant marginal bone loss, implants.
RESUMO
En el presente artículo se presentan diferentes opciones clínicas en cirugía regenerativa ósea mediante la aplicación de un nuevo biomaterial reabsorbible de origen equino (BIO-GEN® - Bioteck).La principal característica diferencial de este biomaterial es su método de desantigenización a baja temperatura que evita la obtención de un compuesto con partículas calcinadas. Esta característica favorece el proceso de rehidratación e imbibición sanguínea de sus gránulos aplicados en el lecho óseo receptor. Mediante la presentación de diversos casos clínicos de cirugía oral e implantología se describe la técnica de aplicación y ventajas de este biomaterial (AU)
In the present article there are included different clinical options in regenerative bone tissue surgery through the application of a new reabsorbable biomaterial of equine origin (BIO-GEN® - Bioteck).The main characteristic of this biomaterial is it method of desantigenization at low temperature which avoids obtaining a component with burned particles. This characteristic benefits the process of re hydratation and blood absorption of the granules applied in the bone layer recipient. Application method and advantages of this biomaterial are described by the presentation of several clinical cases of oral surgery and implantology (AU)
