ImpiloStomatology

Khulisa amazinyo amasha? Abacwaningi bathi kungenzeka

Uma ungafuni ukuya wamazinyo, awuwedwa. Abantu abaningi unokukhathazeka mayelana ukuvakashela lezi zazi. Olunye ucwaningo olwenziwa e-Netherlands, lwaze lwaveza nokuthi 24% wabantu abadala musa nje ungathandi nokwesaba bamazinyo. Ngaphezu kwalokho, inani eliphakeme kangaka labantu ozama ukugwema ngokuvakashela mitholampilo uhambe khona kuphela uma kunesidingo esikhulu. Lokhu kuyasisiza sibone ukuthi kungani 92% abantu abadala izimbotshana namazinyo unomphela.

Kodwa kukhona izindaba ezinhle. Ucwaningo lwamuva nje abonisa ukuthi esikhathini esizayo esiseduze singase sibe ithuba ugcwalise izimbotshana namazinyo eziphilayo izicubu onempilo okuyokunika amazinyo ethu unomphela ithuba lesibili.

Indlela yokutshala kwamazinyo oshaka

Kungase kubonakale sengathi, uma kuqhathaniswa nezinye izinhlobo, abantu abanayo leyo nhlanhla kakhulu, ngoba kumele ulandele noma isethi eyodwa namazinyo konke ukuphila omdala. Abalandeli oshaka, isibonelo, bayawazi yokuthi lezi zilwane abe amasethi angenamkhawulo namazinyo konke ukuphila. Ezinye zazo abe sesibalo samazinyo ngaphansi kwesikhumba, olulindele in amaphiko ukuze esikhundleni liwile. Ngaphezu kwalokho, izinyo esikhundleni owenzeka njalo ngemva kwamasonto amathathu. Yingakho izazi zikholelwa ukuthi olwandle ngithuka ngamazinyo oshaka.

Isakhiwo eziyinkimbinkimbi

Kodwa uma ushaka, zesivikelo njengezilwane ezihuquzelayo kakhulu nezilwane eziphila ezweni Ungashintshanisa amazinyo abo kulo lonke ekuphileni, khona-ke, kungani abantu nezilwane ezincelisayo eziningi Uthole ezimbili kuphela amasethi amazinyo?

Iqiniso lokuthi kukhona ukuhlanganisa emkhatsini kushuba inani amasethi amazinyo, elisesifundeni zilwane. Njengoba ezincelisayo unekhono ukuhlafuna, base amasethi eziyinkimbinkimbi amazinyo tabobunjwa. Ngokwesibonelo, wasibonisa canines babe munye kuphela Ukwakha-up, kuyilapho premolars - emibili molars - ezine noma ezinhlanu. isakhiwo esinjalo eziyinkimbinkimbi amazinyo kuxhomeke kulokho akudlayo esincelisayo. Lesitshalo ukuthi adle bamboo, isibonelo, kufanele isakhiwo kuyinkimbinkimbi kunazo amazinyo. Ngakho, i-panda giant noma Lemur bamboo abe eziyinkimbinkimbi namazinyo emuva nge eziningi lamachubu abukhali, ezisiza ukuhlafuna ugaye nezicubu kanzima. Ngakho, amazinyo abo bheka okufanayo, ngisho noma azihlotshaniswa nezinye izilwane ezincelisayo.

Njengezinye izilwane ukubuyisela namazinyo

Kunezinye izibonelo ezithakazelisayo kwezilwane ne okuwabuyisela amazinyo abo. Ngesikhathi piranha amazinyo tho ndawonye, futhi babheka ifana nommese obukhali kakhulu. Ngakho-ke piranha ulahlekelwe ezingaphezu kweyodwa ngezinyo, futhi yonke quadrant, futhi kudingeke ukuba sincike omunye quadrant ezintathu ukuze usinde kuze ukwanda entsha.

Nakuba ezincelisayo ngokuvamile libhekene amasede amabili namazinyo - ubisi unomphela, ezinye zazo isakhuluma ikhono ukuthuthukisa namazinyo ngaphezulu. Manatee, isibonelo, bayakwazi ukuthuthukisa kwamazinyo ngemuva umlomo wakhe for a lifetime.

Nezinye izilwane wathola linye kuphela iqoqo amazinyo, kodwa sasilokhu sanda. Sikhuluma namagundane, ezifana amagundane noma amagundane. Imfihlo siwukuthi bangamalungu ekunqandeni amaseli impande izinyo, ezinomthelela ekwandeni dentin kanye koqweqwe lwawo. Lokhu kuyadingeka ngenxa ukudla okuqinile abakudlayo.

Evolution in Action

Cishe, akunakwenzeka ukuba abantu abake ukuthuthukisa ikhono babe engaphezu kwemibili amasethi amazinyo, ngoba ukuziphendukela kwemvelo idinga ukuthi lo mehluko ezithinta ukuthi leyo nzalo iyoba ukusinda. Noma kunjalo, sinikezwe namanje okhulayo kulesi sici - ochwepheshe bathi abantu okumbalwa manje namazinyo ngokuhlakanipha. Lokhu molars lwesithathu evelayo lapho usukhulile ekuseni, lapho emhlathini yethu yakheke ngokugcwele. Zonke ngoba siye eside balungiselela ukudla kwazo, futhi ethambile, ukuze isidingo molars lwesithathu siqedwa. Ngaphezu kwalokho, emhlathini yethu uthola ezincane, futhi ngenxa yalokho, ukuze molars Asisekho. Yingakho sibona abantu abaningi abangenalo molars lwesithathu. Kuphela u-20% sabantu akudingeki ukuhlakanipha amazinyo.

Imizamo yokuqala lososayensi

Mhlawumbe singelokothe kuyoba lesithathu amazinyo, kodwa angazi ukuthi iyeke ososayensi ukuzama ukuthola indlela esikhundleni namazinyo ekhishwe entsha, futhi uyaphila. Ilabhorethri eKing sika College London baye ezifakelwa ngempumelelo bio-kwamazinyo amagundane. Ososayensi baye basebenzisa izicubu womuntu gingival futhi ekunqandeni amaseli amagundane, okuholela ongathuthuka kuzo namazinyo entsha dentin kanye koqweqwe lwawo. Enye yezinkinga yokusetshenziswa yokwelapha abantu ukuthi ukutshala ama-stem cell kwenzeka ngaphandle kwesibeletho, kodwa kukhona basheshe ulahlekelwa amandla abo.

Noma kunjalo, isayensi kule ndaba ayikho indawo, kukhona izindlela ezintsha zokuthola izinsuku namazinyo ezikhulayo, okuyiwona uginindela izicubu isetshenziswa, isibonelo, ukuze kungenzeka ukuthi ngemva kwesikhashana namazinyo elisha lizotholakala, nabantu abavamile.

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