Abstract

CAMACHO-ALONSO, F; PEREZ-SAYANS, M; PENARROCHA-OLTRA, D  and  MONTERO-MARTIN, J. Histological and immunohistochemical comparison of the peri-implant mucosa located around of conventional aesthetic straight abutments and the new slim abutments: clinical trial multicenter randomized split-mouth. Av Odontoestomatol [online]. 2023, vol.39, n.3, pp.32-40.  Epub Nov 06, 2023. ISSN 2340-3152.

To guarantee the success of dental implants, it is necessary to achieve the formation of an adequate peri-implant mucosa that allows rapid peri-implant biological sealing, which is crucial for the success of the implant, minimizing the invasive capacity of microorganisms through the gingival sulcus. Therefore, the adhesion of the epithelium and connective tissue to the surface of the prosthetic abutments is very important for the viability of a dental implant. In this sense, in recent years the morphology of prosthetic abutments has been modified, both in terms of the size of the abutment body (diameter) and in the neck of these, even incorporating grooves to improve the health of the peri-implant tissue. However, the design of narrow pillars whose diameter at the connection level is less than that of the implant platform, commonly known as platform switching (PS), seems to be the one that would provide the best mucosal seal to the implant, by reducing the vertical component. of the biological width, and create a greater horizontal distance. At present, the lack of knowledge about how the modification of the geometric design of a prosthetic abutment, with a change in the diameter of the PS-type neck, can influence the formation of an adequate peri-implant mucosa; motivated us to develop this research project. In this clinical trial, we intend to compare the composition, distribution and structure of the peri-implant tissues around the intermediate prosthetic posts with straight (control) and concave axial geometry of the PS type (test) from the manufacturer Galimplant® (Galimplant S.L., Sarria, Spain). The objective is to study which abutment design obtains a better biological seal from the clinical and histomorphometric point of view.

Keywords : Peri-implant tissues; mucosal sealing; transepithelial abutment; straight axial geometry; concave axial geometry.

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