Dental occlusion in a split Amazon indigenous population.

<p><b>A</b>) Normal occlusion as observed in a male individual from the Arara-Laranjal village. The lines indicate the upper canine tip occluding between the lower canine and lower 1^st premolar. <b>B</b>) Class III malocclusion associated with anterior and posterior crossbite in a male from the Arara-Iriri village. The lines indicate a misaligned upper canine tip occluding posterior to the lower canine and lower 1^st premolar.</p

Descriptive statistics for tooth wear in the upper and lower jaw.

<p>Median (−), minimum and maximum values for the Arara-Laranjal (left side, n = 58) and Arara-Iriri (right side, n = 23) populations. P values were obtained using a Mann-Whitney test.</p

Dentition features in the Arara-Iriri and Arara-Laranjal groups for deciduous, mixed and permanent dentition.

<p>PR = Prevalence Ratio.</p>∞<p>PR Not computed (zero)/p-value for NA = Not available (ns) = not significant;</p>*<p>P<.05;</p>**<p>P<.01;</p>***<p>P<.001.</p

Kappa coefficient for diagnostic method.

<p>Kappa coefficient for diagnostic method.</p

Sample size (n) and mean age (years) in the Arara-Laranjal and Arara-Iriri villages.

<p>Sample size (n) and mean age (years) in the Arara-Laranjal and Arara-Iriri villages.</p

MDS plot based on the pairwise R_ST genetic distance matrix (Stress = 0.134).

<p>MDS plot based on the pairwise R_ST genetic distance matrix (Stress = 0.134).</p

Single locus and haplotype genetic diversities calculated for the 5 different regions as well as in the total sample from Brazil.

<p>Single locus and haplotype genetic diversities calculated for the 5 different regions as well as in the total sample from Brazil.</p

Probability of finding at least one mutation between two Y-STR haplotypes one to four generations apart.

*<p>Single locus mutation rates are according to YHRD (<a href="http://www.yhrd.org" target="_blank">www.yhrd.org</a>) and Ballantyne et al. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0040007#pone.0040007-Ballantyne2" target="_blank">[35]</a>; haplotype mutation rates for the different sets have been calculated as the average mutation of the corresponding.</p

Map of Brazil indicating the geographical location of the 17 different sampling places located in 5 geopolitical regions.

<p>Map of Brazil indicating the geographical location of the 17 different sampling places located in 5 geopolitical regions.</p