Color differences: Polymerized composite and corresponding Vitapan Classical shade tab

Dental color matching instruments and systems. Review of clinical and research aspects

“…81 A study, conducted using Easyshade, reported that evaluated resin composites exhibited poor match compared to target Vitapan Classical tabs of the same shade designations. 82 Similar conclusions were derived when various composites of corresponding shades were compared with a shade guide using a non-dental colorimeter, 83 and with each other using a bench-top spectrophotometer. 84 …”

European dental students’ opinions about visual and digital tooth colour determination systems

“…The lack of precision of visual color determination methods, utilising visual shade guides, has been repeatedly addressed in the literature. [1][2][3][4][5][6][7][8][9] At the same time the precision of the electronic methods for color determination has gained more attention.…”

In Vivo and in Vitro Evaluations of Repeatability and Accuracy of VITA Easyshade® Advance 4.0 Dental Shade-Matching Device

“…Razlike dobivene u mjerenjima in vitro zato mogu biti uzrokovane neodgovarajućim mjerenjem. Browning i suradnici imali su također sličan problem te su objasnili da umjetni zubi u Vitinu ključu boja imaju debljinu od 3,5 do 4,0 mm u srednjoj trećini, što je dovoljno da ih se mjeri na isti način kao i prirodne zube (28).…”

“…The differences in this model may be caused by inadequate mode. Nevertheless, Browning et al reported the same issue, explaining that Vita tabs have a thickness of approximately 3.5-4.0 mm in the middle-third, enough to measure them the same way the natural teeth are measured (28).…”