| http://www.w3.org/ns/prov#value | - The retention of upper canines covers a small portion of the population ranging, according to the authors, from 0.9 to 2.5%1,2,3,6,8,12,16 occurring two to three times more in females than in males (although the reason is unknown, there is an assumption that this occurs due to a lower transverse dimension of the upper arch in females) and usually occurs unilaterally (75 to 95% of cases) and palata
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