In Vivo and in Vitro Evaluations of Repeatability and Accuracy of VITA Easyshade® Advance 4.0 Dental Shade-Matching Device.
OBJECTIVE
The objective of this study was to evaluate the intra-device repeatability and accuracy of dental shade-matching device (VITA Easyshade® Advance 4.0) using both in vitro and in vivo models.


METHODS
For the repeatability assessment, the in vivo model utilized shade-matching device to measure the central region of the labial surface of right maxillary central incisors of 10 people twice. The following tooth colors were measured: B1, A1, A2, A3, C1 and C3. The in vitro model included the same six Vitapan Classical tabs. Two measurements were made of the central region of each shade tab. For the accuracy assessment, each shade tab from 3 Vitapan Classical shade guides was measured once. CIE L*a*b* values were determined. Intraclass correlation coefficients (ICCs) were used to analyze the in vitro and in vivo intra-device repeatability of the shade-matching device. The difference between in vitro and in vivo models was analyzed. Accuracy of the device tested was calculated.


RESULTS
The mean color differences for in vivo and in vitro models were 3.51 and 1.25 E units, respectively. The device repeatability ICCs for in vivo measurements ranged from 0.858 to 0.971 and for in vitro from 0.992 to 0.994. Accuracy of the device tested was 93.75%.


CONCLUSIONS
Within the limitations of the experiment, VITA Easyshade®Advance 4.0 dental shade-matching device enabled reliable and accurate measurement. It can be a valuable tool for the determination of tooth colours.
Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Croatia.
Dubravka
D
Knezović
Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Croatia.
Davor
D
Zlatarić
Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Croatia.
Iva Ž
IŽ
Illeš
Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Croatia.
Maja
M
Alajbeg
Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Croatia.
Žagar
Color, Luminescent Measurements; Optical Devices; Tooth
J Prosthet Dent. 2001 Nov;86(5):458-64
11725272
J Prosthet Dent. 2002 Jun;87(6):657-66
12131889
J Dent Res. 2002 Aug;81(8):578-82
12147751
Compend Contin Educ Dent. 2003 Mar;24(3):175-8, 180, 182 passim; quiz 188
12680347
Int J Periodontics Restorative Dent. 2003 Oct;23(5):467-79
14620121
J Dent. 2004;32 Suppl 1:3-12
14738829
Int J Periodontics Restorative Dent. 2004 Jun;24(3):222-31
15227770
J Prosthodont. 2007 Mar-Apr;16(2):93-100
17362418
J Prosthet Dent. 2007 Apr;97(4):200-8
17499089
J Prosthet Dent. 2007 Nov;98(5):353-8
18021823
Br Dent J. 2007 Dec 22;203(12):675-80
18084212
Oper Dent. 2008 Mar-Apr;33(2):121-6
18435184
J Prosthet Dent. 2009 Jan;101(1):40-5
19105990
J Prosthet Dent. 2009 Feb;101(2):92-100
19167533
J Prosthet Dent. 2009 Mar;101(3):193-9
19231572
J Dent. 2009;37 Suppl 1:e34-9
19500895
Quintessence Int. 2009 Oct;40(9):e69-79
19862392
Gen Dent. 2009 Jul-Aug;57(4):323-7
19903610
J Dent. 2010;38 Suppl 2:e2-16
20621154
J Dent. 2011 Dec;39 Suppl 3:e45-51
22100774
Eur J Esthet Dent. 2011 Winter;6(4):428-35
22238725
J Dent. 2012 Jul;40 Suppl 1:e82-7
22306532
Oper Dent. 2012 May-Jun;37(3):219-27
22313274
Clin Oral Investig. 2014;18(5):1473-9
24100636
Acta Stomatol Croat. 2014 Mar;48(1):33-41
27688349
Dent Mater. 1987 Oct;3(5):246-51
3479360
J Prosthet Dent. 1973 Apr;29(4):416-24
4511779
J Prosthet Dent. 1998 Dec;80(6):642-8
9830067