Amenyo, kimwe nibindi bice byose byumubiri wumuntu, bigomba guhinduka. Mu bihe byinshi, mu myaka yashize, amenyo ari umwijima. Ibi bibaho kubwimpamvu nyinshi. Ubwa mbere, bitewe no kunanuka kumurongo wo hejuru winyo - enamel. Kuva gupfumba cyane, enamel ihinduka "film" mu mucyo, unyuzemo umuhondo, imvi cyangwa umutuku dentish bigaragara.
Icya kabiri, ibintu byo hanze bigira ingaruka ku mpinduka mu ibara ry'amenyo. Ibi birimo kwitwaje icyayi, ikawa, kunywa itabi kandi ntibihagije amenyo yitonze. Kubera iyi, urumuri rwumuhondo rudashimishije rugaragara hejuru y amenyo. Ibara ry'amenyo rizafasha gukosora isuku yumwuga, byera cyangwa gukoresha proseers.
Ku rubyiruko rushobora kandi guhamya uburebure buto bw'amenyo yatwaye mu buzima bwabo bwose. Ibi biganisha ku guhinduka mu kuruma ndetse nisura ya ova. Kubwamahirwe, abaganga b'amenyo bize uko bahanganye nibi wongera amenyo cyangwa kwishyiriraho abarozi.
Kubura amenyo amwe nabyo birasambuka. Bibaho nubwo amenyo yinyuma yatakaye. Kubera umwanya mu kato, amenyo asigaye ahindura umwanya wabo (icyuho cya Intersubolic cyiyongera, kugabanuka kw'amenyo). Kubwibyo, ugomba kwitabaza prostate mugihe gikwiye.