Int J Prosthodont. 2020 Sep/Oct;33(5):487-492. doi: 10.11607/ijp.6470.
The aim of the present study was to assess the perceptibility and acceptability threshold values for color differentiation at the restoration and mucosa levels.
One restored single-tooth implant and the contralateral reference tooth were spectrophotometrically assessed in 20 patients. Perceptibility and acceptability were evaluated by dentists, dental technicians, and laypeople.
Dental technicians had the highest sensitivity in the perception of tooth color differences (ΔE = 2.7), followed by dentists (ΔE = 3.3) and laypeople (ΔE = 4.4). Acceptability threshold values were generally higher than perceptibility threshold in all groups. Dental technicians exhibited the highest sensitivity in the perception of mucosa color differences (50% perceptibility at ΔE = 2.65), followed by dentists (ΔE > 3.7) and laypeople (ΔE > 6).
Color differences were tolerated with varying degrees among the three groups. Laypeople accepted higher color differences at the mucosa level.
本研究旨在评估修复体和黏膜水平颜色区分的可感知性和可接受性阈值。
20 名患者对单颗修复种植牙和对侧同名天然牙进行分光光度评估。可感知性和可接受性由牙医、牙科技师和非专业人士评估。
牙科技师在感知牙齿颜色差异方面的敏感度最高（ΔE=2.7），其次是牙医（ΔE=3.3）和非专业人士（ΔE=4.4）。在所有组中，可接受性阈值值通常高于可感知性阈值。牙科技师在感知黏膜颜色差异方面的敏感度最高（50%可感知性时ΔE=2.65），其次是牙医（ΔE>3.7）和非专业人士（ΔE>6）。
三组人群对颜色差异的容忍度不同。非专业人士在黏膜水平上能接受更高的颜色差异。
