Fig. 7From: An application of the density standard and scaled–pixel–counting protocol to assess the radiodensity of equine incisor teeth affected by resorption and hypercementosis: preliminary advancement in dental radiographyThe comparison of the numbers of pixels (NP) between Equine Odontoclastic Tooth Resorption and Hypercementosis (EOTRH) grades (EOTRH 0–3). Data displayed separately for consecutive steps of density standard—S1 (A), S2 (B), S3 (C), S4 (D), S5 (E), S6 (F), S7 (G), S8 (H), S9 (I) and S10 (J). Lower case letters (a–c) indicate differences between groups for p < 0.05. The significant increase with the EOTRH grades is marked with colored lines – orange line when the increase was noted between EOTRH 0 and 3, red line when the increase was observed between EOTRH 1 and 3, blue line when the increase was observed between EOTRH 0 and 1, and green line when the increase occurred between EOTRH 2 and 3Back to article page