Anodontia ne cikakken rashin hakori ci gaba, da kuma hypodontia ne rashin wasu hakori ci gaba. Anodontia ne rare, mafi sau da yawa faruwa a cikin wani yanayin da ake kira hypohydrotic ectodermal dysplasia, yayin da hypodontia ne daya daga cikin mafi na kowa ci gaban abnormalities, shafi 3.5<unk>8.0% na yawan (ba ciki har da na uku molars). Rashin na uku molars ne sosai na kowa, faruwa a 20<unk>23% na yawan, bi a prevalence da na biyu premolar da kuma lateral incisor. Hypodontia ne sau da yawa hade da rashin wani hakori lamina, wanda shi ne m zuwa muhalli sojojin, kamar kamuwa da cuta da kuma chemotherapy magunguna, kuma an hade da mutane da yawa syndromes, kamar Down da Crouzon. Hyperdontia ne ake zargi da ci gaba da m hakora. Yana da mafi m faruwa a cikin wani yanayin da ake kira hypohidrotic ectodermal dysplasia, yayin da hypodontia ne daya daga cikin mafi na kowa ci gaban abnormalities, shafi 3.5<unk>8.0% na yawan jama'a
rashin lamina na hakori