ARTICLE DOWNLOAD

How reliable and accurate is the shade determination of premolars by spectrophotometry?

10.00$
ARTICLE DOWNLOAD

How reliable and accurate is the shade determination of premolars by spectrophotometry?

10.00$

Anna-Luisa Klotz, Yasamin Habibi, Alexander Jochen Hassel, Peter Rammelsberg & Andreas Zenthöfer 

Abstract

Objectives

To evaluate the reliability and accuracy of spectrophotometric shade determination of premolars and to compare the results with those for incisors.

Material and methods

Fifty-seven participants with natural maxillary incisors and premolars were recruited to investigate the research question. The colour of test teeth (incisors, n = 210; premolars, n = 192) was measured by use of the Vita Easyshade Advance (ES-A) and Vita Easyshade V (ES-V). Accuracy was evaluated by rating the shade tab matches recommended by the devices (scale, 1 = excellent match to 3 = mismatch). Inter-device reliability between the ES-A and ES-V for measurement of incisors and premolars was evaluated using intra-class correlation coefficients (ICC). The ratings for the accuracy of the devices were analysed using descriptive and bivariate statistics. A linear regression model was used to evaluate possible independent influencing confounders on the shade match.

Results

Inter-device agreement of the ES-A and ES-V for measurement of incisors and premolars was excellent for all colour components (ICC > 0.9). The accuracy of both devices was acceptable to excellent for incisors and premolars, although the ES-V was more accurate than the ES-A (p < 0.001). No significant difference in accuracy was detected between premolars and incisors (p = 0.182). The linear regression model confirmed the bivariate testing.

Conclusions

The reliability and accuracy of spectrophotometric shade determination seem comparable for incisors and premolars. The recently introduced ES-V seems more accurate than its predecessor model. Further studies are needed to validate the results of this study.

Only units of this product remain
Year 2020
Language English
Format PDF
DOI 10.1007/s00784-019-03162-x