The relation between peri-implantitis and metal release from implant material and prosthetic components. A TXRF answer.

M.S. GRENÓN; M. KREMER; FABIANA OLIVA; D. FUCKS; M. C. IBAÑEZ; M. GARCÍA; J.C. IBAÑEZ; H. J. SÁNCHEZ

Girona

Conferencia; 18th International Conference on Total Reflection X-ray Fluorescence Analysis and Related Methods (TXRF 2019); 2019

During the last decade, oral rehabilitation had a big step-forward with the appearance of dental implants. Dental implants are a successful and clinically predictable procedure for a single dental restoration and for major rehabilitations. Today, they are an important part of the daily practice of modern dentistry.  Nevertheless, complications may arise in the procedure, which are related to occlusion and peri-implant diseases defined as mucositis and peri-implantitis, whose etiopathogenesis are not yet well understood.Titanium-based dental implants are in contact with an hostile electrolytic medium such as bacterial colonization, inflammation and peri-implant crevicular fluid. Usually they cohabit with a medium-term pathological phenomenon called mucositis and peri-implantitis[1]. In this environment, dental implants undergo a gradual electrochemical degradation process called corrosion [2]. During this process, the implant material and prosthetic components release chemical elements to the local environment. It is not well understood yet if this process could triggers cytotoxic responses and superficial inflammatory events leading to peri-implantitis or, conversely, the inflammatory condition due to peri-implantitis leads to corrosion and then, the to metal release into medium.Chemical elements can be detected in the peri-implantar crevicular fluid at level of traces with high sensitivity and very low limits of detection by means of the X-Ray Fluorescence spectrochemical technique in total reflection conditions, induced by synchrotron radiation [3-5]. The aim of this work was to find a relationship between peri-implantitis and metal release, by determining the concentration of transition elements in peri-implantar fluids of patients with implant-supported prostheses. Different materials of known composition were taken into account: zirconia, noble metals and nickel chromium. Very strict inclusion and exclusion criteria were used in order to obtain specific results that can help to establish whether the patient´s gingival state influences the relationship between concentration and type of released elements with the composition of the prosthesis.