Accuracy of intraoral scans: An in vivo study of different scanning devices.
J Prosthet Dent
; 128(6): 1303-1309, 2022 Dec.
Article
em En
| MEDLINE
| ID: mdl-33902891
ABSTRACT
STATEMENT OF PROBLEM:
The accuracy of intraoral scanners is a prerequisite for the fabrication of dental restorations in computer-aided design and computer-aided manufacturing (CAD-CAM) dentistry. While the precision of intraoral scanners has been investigated in vitro, clinical data on the accuracy of intraoral scanning (IOS) are limited.PURPOSE:
The purpose of this clinical study was to determine the accuracy of intraoral scanning with different devices compared with extraoral scanning. MATERIAL ANDMETHODS:
An experimental appliance was fabricated for 11 participants and then scanned intraorally and extraorally with 3 different intraoral scanners and a reference scanner. Intraoral and extraoral scans were subdivided into complete-arch and short-span scans and compared with the reference scan to assess trueness. Repeated scans in each group were assessed for precision.RESULTS:
Precision and trueness were higher for extraoral scans compared with intraoral scans, except for complete-arch scans with 1 intraoral scanner. The median precision of short-span scans was higher (extraoral 22 to 29 µm, intraoral 23 to 43 µm) compared with complete-arch scans (extraoral 81 to 165 µm, intraoral 80 to 198 µm). The median trueness of short-span scans (extraoral 28 to 40 µm, intraoral 38 to 47 µm) was higher than that of complete-arch scans (extraoral 118 to 581 µm, intraoral 147 to 433 µm) for intraoral and extraoral scanning.CONCLUSIONS:
Intraoral conditions negatively influenced the accuracy of the scanning devices, which was also reduced for the complete-arch scans.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Técnica de Moldagem Odontológica
/
Modelos Dentários
Limite:
Humans
Idioma:
En
Revista:
J Prosthet Dent
Ano de publicação:
2022
Tipo de documento:
Article