Kanazawa E, Sekikawa M, Ozaki T
J Dent Res. 1984 Nov;63(11):1298-301. doi: 10.1177/00220345840630110901.
The occlusal surfaces of the first upper molars of a Dutch population were measured three-dimensionally by moiré contourography. Cusps and ridges were higher than those of a Japanese population, but distances between cuspal tips were smaller. Differences in occlusal form may influence jaw movements in the two populations.