Comparative in vitro study of the accuracy of impression techniques for dental implants: Direct technique with an elastomeric impression material versus intraoral scanner
Med. oral patol. oral cir. bucal (Internet)
; 24(1): e89-e95, ene. 2019. ilus, graf, tab
Artículo
en Inglés
| IBECS
| ID: ibc-180411
Biblioteca responsable:
ES1.1
Ubicación: BNCS
ABSTRACT
Background:
The aim of this study was to compare a conventional technique (elastomeric impression material - EIM) and a digital technique (scanner digital model - SDM) on a six-analog master model (MM) to determine which was the most exact. Material andMethods:
Twenty impressions were taken of a master model (EIM) and twenty scanned impressions (SDM) (True Definition). A coordinate measuring machine (CMM) was used to measure the distances between adjacent analogues (1-2, 2-3, 3-4, 4-5, 5-6), intermittently positioned analogues (1-4, 3-6) and the most distal (1-6). Reference values were established from the master model, which were compared with the two impression techniques. The significance level was established as 5% (p<0.05).Results:
The precision of each technique was compared with MM. For adjacent analogues (1-2), no significant differences were found between EIM-MM (p=0,146). For intermittently positioned analogues (1-4), SDM did not show significant differences with MM (p=0.255). For the distance between distal analogues (1-6), significant differences were found between both tecniques and MM (p=0.001).Conclusions:
In a clinical situation with < three implants, EIM is more exact than SDM, but in cases of four implants SDM is more exact. For rehabilitations (> four implants), neither technique can be considered accurate although error falls within the tolerance limits established in the literature (30-150μm)RESUMEN
No disponible
Texto completo:
Disponible
Colección:
Bases de datos nacionales
/
España
Base de datos:
IBECS
Asunto principal:
Técnica de Impresión Dental
/
Diseño de Prótesis Dental
/
Implantación Dental Endoósea
Límite:
Humanos
Idioma:
Inglés
Revista:
Med. oral patol. oral cir. bucal (Internet)
Año:
2019
Tipo del documento:
Artículo
Institución/País de afiliación:
University of Valencia/Spain