Kukula mano latsopano? Ochita kafukufuku amanena kuti n'zotheka

Ngati simukufuna kupita wa mano, simuli nokha. Anthu ambiri nkhawa kuyendera akatswiriwa. Kafukufuku wina linachita ku Netherlands, ngakhale kuti 24% ya akulu sitimangotseka zikuwanyansa ndi kuopa mano. Komanso, ambiri a anthu akuyesera kupewa kuyendera zipatala awa ndi kupita kumeneko pokhapokha ngati kuli koyenera kutero. Izi zikutithandiza kumvetsa chifukwa 92% ya akulu ndi cavities mano okhazikika.

Koma pali nkhani yabwino. kafukufuku wa posachedwapa akusonyeza kuti posachedwapa tikhale ndi mwayi kudzaza cavities mano moyo wathanzi minofu kuti adzakupatsani mano okhazikika mwayi wachiwiri.

Kodi kukula mano Nsombayi

Zingaoneke kuti, poyerekeza ndi zinyama zina, anthu sangathe mwayi kwambiri, chifukwa tili zikhazikike chimodzi mano lonse akadzakula. Fans wa nsombazo Mwachitsanzo, amadziwa chakuti nyama ndi waika malire mano moyo. Ena ambiri mano pansi pa khungu, akungoyembekezera mu mapiko m'malo wagwa. Komanso, dzino m'malo inadzachitika milungu itatu iliyonse. N'chifukwa chake akatswiri amakhulupirira kuti nyanja chosaneneka mano kwa nsombazo.

Kapangidwe zovuta

Koma ngati nsombazi, ngati zokwawa kwambiri ndipo achule akhoza m'malo mano moyo, ndiye n'chifukwa chiyani anthu ndi nyama ambiri analandira miyeso iwiri yokha mano?

Popeza kuti pali malumikizanidwe pakati pa zovuta ndipo chiwerengero kukukhala mano, umene uli mtundu. Popeza nyama angathe kutafuna, iwo anali waika zovuta mano wamitundu yosiyanasiyana. Mwachitsanzo, ananena canines ndi mmodzi kumanga mmwamba, pamene premolars - awiri ndi molars - anayi kapena asanu. Chotero dongosolo zovuta mano zimadalira zimene adya nyama. Species kuti kudya nsungwi, mwachitsanzo, ndi kapangidwe zovuta kwambiri mano. Choncho, Panda kapena lemur nsungwi ndi mano zovuta kumbuyo ndi zambiri timabamputimabampu lakuthwa, zomwe zimathandiza kuti kutafuna ndi kupera minofu zovuta. Choncho, mano amaoneka mofanana, ngakhale kumphatikiza ndi nyama zina.

Monga nyama zina kubwezeretsa mano

Palinso zitsanzo zosangalatsa za nyama ndi mphamvu zobwezeretsa mano. Pa piranhas mano ndi zinaphatikizidwa pamodzi, ndipo iwo amaoneka ngati mpeni wakuthwa kwambiri. Choncho piranhas kutaya dzino kuposa wina, ndi nusu lonse, ndipo kudalira ena quadrants atatu kupulumuka mpaka nyamuka latsopano.

Ngakhale nyama zambiri yodziwika ndi miyeso iwiri ya mano - mkaka ndi okhazikika, ena mwa iwo anapitiriza luso kukhala mano kwambiri. Nyama zotchedwa Mwachitsanzo, amatha kukhala mano kumbuyo m'kamwa mwake moyo wonse.

nyama zina analandira kabudula mmodzi yekha mano, koma nthawi zonse kukula. Tikuyankhula zokhudza makoswe, monga mbewa kapena makoswe. Chinsinsi n'chakuti ndi mapulaniwo maselo muzu dzino, amene ukule wa dentin ndi enamel. Izi ndi zofunika chifukwa chakudya chotafuna iwo kudya.

Evolution in Action

N'zokayikitsa kuti anthu nthawi luso ndi akanema oposa awiri mano, chifukwa kusanduka amafuna kuti kusiyana bwanji ngati ana adzapulumuka. Komabe, panopo osauka chikutanthauza - akatswiri amanena kuti anthu ochepa tsopano ndi mano nzeru. Izi molars lachitatu amene amapezeka akakula, pamene nsagwada wathu athanzi. Onse chifukwa ife kale kukonzekera chakudya chawo, ndi zofewa, kotero kuti kufunika molars lachitatu inathetsedwa. Komanso, nsagwada athu afika ang'onoang'ono, choncho, chifukwa molars ndi malo. Ndicho chifukwa chake tikuona anthu ambiri amene alibe molars lachitatu. Only 20% ya anthu alibe nzeru mano.

Zoyesayesa woyamba asayansi

Mwina sitinayambe adzakhala gulu lachitatu mano, koma sanasiye asayansi kuyesa kupeza njira m'malo mano yotengedwa ndi atsopano, komanso moyo. Laboratory pa Mfumu College London akwanitsa anapatsa zamera-mano mbewa. Asayansi ntchito anthu gingival minofu ndi mapulaniwo maselo kuchokera mbewa, chifukwa mu akhoza kukula mano latsopano dentin ndi enamel. Limodzi mwa mavuto a ntchito mankhwala anthu ndi kulima maselo tsinde amapezeka mu m'galasi, koma pali iwo mwamsanga anataya mphamvu zawo.

Komabe, sayansi pankhani imeneyi si mu malo, palinso njira yatsopano mano kukula, umene zamkati minofu ntchito Mwachitsanzo, kotero kuti n'zotheka kuti patapita kanthawi mano latsopano lidzakhala lilipo, ndi anthu wamba.