Measurement of gap between abutment and fixture in dental conical connection implants. A focused ion beam SEM observation
Med. oral patol. oral cir. bucal (Internet)
; 25(4): e449-e454, jul. 2020. ilus, tab
Artículo
en Inglés
| IBECS
| ID: ibc-196495
Biblioteca responsable:
ES1.1
Ubicación: BNCS
ABSTRACT
BACKGROUND:
The aim of the authors was to examine the abutment-fixture interface in Morse-type conical implants in order to verify gaps at this level using a new microscopical approach. MATERIAL ANDMETHODS:
In this in vitro study, 20 abutment-fixture complexes were prepared by sectioning (longitudinal and cross-sectional to the long axis) with a microtome and then with a focused ion beam (FIB). This is a micrometric machine tool that uses gallium ions to abrade circumscribed areas to dig deeper into the cuts obtained with the microtome in order to eliminate cut-induced artifacts. This is because the FIB abrasion is practically free from artifacts, which are normally generated by the action of the microtome blades or other techniques. Samples were then observed by scanning electron microscopy (SEM).RESULTS:
The observation of the abraded parts with the FIB permitted measurement of the real gap between the implant-abutment components. A variable amount of gap was retrieved (from 0 to 3 μm) by the observations, confirming the non-hermetic nature of the connection. It has to be pointed out that in approximately 65% of cases, the gap accounted for less than 1 μm.CONCLUSIONS:
The reported data confirmed that the analyzed connection system allowed for minimal gap. However, from the evidence of the present analysis, it cannot be assumed that the 2 parts of a Morse-type conical implant are fused in 1 piece, which would create a perfectly matched hermetic connectionRESUMEN
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Texto completo:
Disponible
Colección:
Bases de datos nacionales
/
España
Base de datos:
IBECS
Asunto principal:
Implantación Dental Endoósea
/
Diseño de Implante Dental-Pilar
Idioma:
Inglés
Revista:
Med. oral patol. oral cir. bucal (Internet)
Año:
2020
Tipo del documento:
Artículo
Institución/País de afiliación:
Catholic University/Italy
/
University of Rome 3/Italy
/
University of Valencia/Spain