Kukhule amazinyo ezintsha? Abaphandi bathi kunokwenzeka

Ukuba awufuni ukuba uye kugqirha wamazinyo, ayinguwe wedwa. Abantu abaninzi baye iinkxalabo malunga ngokundwendwela ezi iingcali. Olunye uphononongo olwenziwe eNetherlands, Sofunyanwa ukuba-24% abantu abadala musa nje endingayithandiyo kunye nokoyika bamazinyo. Ukongeza, kukho inani elikhulu labantu bazama ukuphepha ukutyelela la iiklinikhi uye khona kuphela xa kuyimfuneko. Oku kunceda isizathu sokuba 92% yabantu abadala babe ukuqanda kwamazinyo.

Kodwa kukho iindaba ezilungileyo. Amaphononongo akutsha nje abonisa ukuba kwixa elizayo sibe nethuba ukugcwalisa ukuqanda amazinyo impilo inyama eya kunika kwamazinyo bethu abasisigxina ithuba lesibini.

Indlela ukukhula amazinyo ookrebe

Kusenokubonakala ngathi, xa kuthelekiswa nezinye iintlobo, abantu ukuba unethamsanqa kakhulu, ngenxa yokuba kufuneka uma- enye iseti amazinyo yonke yobomi abadala. Fans yenani lookrebe, umzekelo, baqhelene ukuba ezi zilwanyana kufuneka iiseti mda amazinyo ubomi. Abanye babo babe eziliqela amazinyo phantsi kwesikhumba, elinde nje kwamaphiko ukuba endaweni yokuba iingangamsha zibhuqiwe. Ukongeza, izinyo replacement ukwenzeka qho emva kweeveki ezintathu. Yiyo loo nto iingcali zikholelwa ukuba olwandle izele amazinyo ookrebe.

Isakhiwo complex

Kodwa ukuba shark, ezifana nezirhubuluzi ezininzi eziphila buyisela amazinyo ubomi, ngoko kutheni abantu abaninzi ezanyisayo zizifumene iisethi ezimbini kuphela amazinyo?

Into yokuba kukho unxulumano phakathi nobuntsompothi kunye nenani iiseti kwamazinyo, ophakathi iintlobo. Ekubeni ezanyisayo bayakwazi ukuhlafuna, baba iiseti ezintsonkothileyo amazinyo iimilo ezahlukeneyo. Umzekelo, wachaza canines kuphela sokwakha-up omnye, lo gama premolars - ezimbini imihlathi - ezine okanye ezintlanu. Loo isakhiwo entsonkothileyo amazinyo kuxhomekeke into ayidlayo ezanyisayo. Iintlobo ezitya ngoqalo, umzekelo, babe isakhiwo olunzima kakhulu kwamazinyo. Ngoko ke, lo panda giant okanye lemur bamboo kufuneka amazinyo ezintsonkothileyo umva a lot of tubercles ezibukhali, ezinceda ukuhlafuna nibusile inyama nzima. Ngenxa yoko, amazinyo abo khangela efanayo, nokuba xa zidityaniswa nezinye izilwanyana.

Njengabanye izilwanyana ukubuyisela amazinyo

Kukho nezinye imizekelo umdla kwezilwanyana kunye ukukwazi ukubuyisela amazinyo abo. Xa piranhas amazinyo edidekile, kunye, kwaye bakhangeleka ngathi ngemela elibukhali kakhulu. Ngoko ke piranhas ulahlekelwa izinyo ngaphezu kwesinye, kwaye yonke ikota, kwaye ke kufuneka ukuba bathembele kwezinye zezine ezintathu ukuya kuzosa kokunyuka entsha.

Nangona ezanyisayo zona ngokubanzi luphawulwa iiseti ezimbini amazinyo - ubisi kunye nokusisigxina, ezinye zazo ziye igcinwe ukukwazi ukuphuhlisa amazinyo ngaphezulu. Manatees, umzekelo, bayakwazi ukuphuhlisa amazinyo ngasemva emlonyeni wakhe ebomini.

Ezinye izilwanyana Ufumene umyalezo omnye kuphela uluhlu amazinyo, kodwa ezikhula rhoqo. Sithetha namabuzi, ezifana neempuku okanye iimpuku. Le mfihlelo kukuba siyenza iiseli kwi iingcambu izinyo, leyo igalelo ekukhuleni dentin kunye lwawo. Oku kuyimfuneko kuba ukutya okuqinileyo kwabo badla.

Evolution in Action

Akunakwenzeka ukuba abantu wakha ubuchule ukuba iiseti ngaphezulu amabini amazinyo, ngenxa yokuba izinto zazivelela kufuna ukuba ezi yantlukwano ezichaphazela ingaba inzala iya kusinda. Noko ke, thina siphuhlisa kule nkalo - iingcali zithi abantu abambalwa ngoku amazinyo ubulumko. Oku imihlathi yesithathu ukuba abonakale ebudaleni ekuqaleni, xa umhlathi lethu abunjwe ngokupheleleyo. Sonke ngenxa yokuba siye kudala balungiselela ukutya kwabo, kwaye kananjalo ethambileyo, ukuze imfuneko imihlathi yesithathu iyapheliswa. Ukongeza, umhlathi yethu isiba ezincinane, yaye ngoko, ngokuba imihlathi akukho gumbi. Yiyo loo nto ke sibona abantu abaninzi ngakumbi abangenazo imihlathi yesithathu. Kuphela malunga ne-20% yabantu azinazo amazinyo ubulumko.

Imizamo yokuqala ka izazinzulu

Mhlawumbi soze kuba iseti wesithathu amazinyo, kodwa oko akukhange bayeka izazinzulu ukuzama ukufumana indlela eya endaweni amazinyo kufunxwa kunye ezintsha, kwaye usaphila. I zelebhu kaKing College London ziye ingenisa ngempumelelo bio-kwamazinyo iimpuku. Izazinzulu baye basebenzisa inyama gingival oluntu siyenza iiseli ukusuka iimpuku, kubangele ukuba ikhule amazinyo ezintsha dentin kunye lwawo. Enye yeengxaki lokusetyenziswa unyango ebantwini kukuba ngokulinywa iiseli stem kwenzeka in vitro, kodwa bakhawuleza baphelelwe ngamandla abo.

Kunjalo, isayensi kulo mba ayikho indawo, kukho kwakhona iindlela ezintsha amazinyo ezikhulayo, yintlama izicwili isetyenziswa apho, umzekelo, ukuba kunokwenzeka ukuba emva kwethuba amazinyo ezintsha ziya kufumaneka, kunye nabantu abaqhelekileyo.