Repeatability and reproducibility of individual abutment impression, assessed with a blue light scanner
The Journal of Advanced Prosthodontics
;
: 214-218, 2016.
Artigo
em Inglês
| WPRIM
| ID: wpr-194491
ABSTRACT
PURPOSE:
We assessed the repeatability and reproducibility of abutment teeth dental impressions, digitized with a blue light scanner, by comparing the discrepancies in repeatability and reproducibility values for different types of abutment teeth. MATERIALS ANDMETHODS:
To evaluate repeatability, impressions of the canine, first premolar, and first molar, prepared for ceramic crowns, were repeatedly scanned to acquire 5 sets of 3-dimensional data via stereolithography (STL) files. Point clouds were compared and the error sizes were measured (n=10, per type). To evaluate reproducibility, the impressions were rotated by 10-20° on the table and scanned. These data were compared to the first STL data and the error sizes were measured (n=5, per type). One-way analysis of variance was used to assess the repeatability and reproducibility of the 3 types of teeth, and Tukey honest significant differences (HSD) multiple comparison test was used for post hoc comparisons (α=.05).RESULTS:
The differences with regard to repeatability were 4.5, 2.7, and 3.1 µm for the canine, premolar, and molar, indicating the poorest repeatability for the canine (P<.001). For reproducibility, the differences were 6.6, 5.8, and 11.0 µm indicating the poorest reproducibility for the molar (P=.007).CONCLUSION:
Our results indicated that impressions of individual abutment teeth, digitized with a blue light scanner, had good repeatability and reproducibility.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Dente
/
Dente Pré-Molar
/
Cerâmica
/
Coroas
/
Dente Molar
Idioma:
Inglês
Revista:
The Journal of Advanced Prosthodontics
Ano de publicação:
2016
Tipo de documento:
Artigo
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