Amazinyo asinceda ukuba silume ukutya, sibize amagama ngokuchanekileyo, kwaye sigcine ukumila kobuso bethu.Iindidi ezahlukeneyo zamazinyo emlonyeni zidlala indima eyahlukileyo kwaye ngoko ke ziza kwiimilo ezahlukeneyo kunye nobukhulu.Makhe sijonge ukuba ngawaphi amazinyo esinawo emilonyeni yethu kwaye zeziphi iingenelo ezinokuzisa.
Uhlobo lwezinyo
Ubume bamazinyo buvumela ukuba benze umsebenzi othile kwinkqubo yokuhlafuna ukutya.
8 incisors
Awona mazinyo angaphambili emlonyeni abizwa ngokuba ngama-incisors, amane phezulu kunye namane, xa ewonke asibhozo.Ubume be-incisors buncinci kwaye buncinci, bufana ne-chisel.Banokukuluma ukutya kube ngamaqhekeza amancinane xa uqala ukuhlafuna, bakuncede uwabize kakuhle amagama xa uthetha, nokugcina imilebe yakho nobume bobuso bakho.
Amazinyo abukhali ecaleni kwe-incisors abizwa ngokuba yi-canines, ezimbini phezulu kunye nezimbini ngaphantsi, zizonke ezine.Amazinyo e-Canine amade kwaye abhekiselele kwimilo kwaye adlala indima ephambili kwinkqubo yokuqhawula ukutya, njengenyama, ngoko ke i-carnivores idla ngokuba namazinyo aphuhliswe ngakumbi.Ayizizo iingonyama kunye namahlosi kuphela, kodwa kunye neevampires ezikwinoveli!
8 iipremolars
Amazinyo amakhulu, athambileyo ecaleni kwamazinyo e-canine abizwa ngokuba yi-premolars, enomgangatho othe tyaba kunye nemida ephakanyisiweyo, ebenza bafanelekele ukuhlafuna nokugaya ukutya, ukutya okulumayo ukuya kubukhulu obufanelekileyo bokugwinya.Abantu abadala abaqolileyo bahlala bene-premolars ezisibhozo, ezine kwicala ngalinye.Abantwana abancinci abanamazinyo e-premolar kwaye ngokuqhelekileyo abaqhubi njengamazinyo asisigxina de babe neminyaka eyi-10 ukuya kwe-12 ubudala.
I-Molars yeyona inkulu kuwo onke amazinyo.Zinomhlaba omkhulu othe tyaba onomphetho ophakamileyo ongasetyenziselwa ukuhlafuna nokusila ukutya.Abantu abadala bane-12 molars esisigxina, i-6 phezulu kunye ne-6 phantsi, kwaye i-8 kuphela kwi-papillae ebantwaneni.
Iimolars zokugqibela ezivelayo zibizwa ngokuba ngamazinyo obulumko, aziwa ngokuba ngamazinyo esithathu obulumko, adla ngokuphuma phakathi kweminyaka eyi-17 kunye ne-21 kwaye abekwe kweyona ndawo ingaphakathi emlonyeni.Nangona kunjalo, abanye abantu abanamazinyo obulumko omane, kwaye amanye amazinyo obulumko angcwatywa ethanjeni kwaye akaze agqabhuke.
Njengoko abantwana bekhula, amazinyo asisigxina aqala ukugqabhuka ngaphantsi kwamazinyo omntwana.Njengoko amazinyo asisigxina ekhula, ngokuthe ngcembe iingcambu zamazinyo omntwana zifunxwa ziintsini, nto leyo ebangela ukuba amazinyo omntwana ahlehle aze awe, nto leyo eyenza amazinyo asisigxina.Abantwana badla ngokuqala ukutshintsha amazinyo xa bekwiminyaka emithandathu ubudala kwaye baqhube de babe malunga ne-12 leminyaka ubudala.
Amazinyo asisigxina aquka i-incisors, i-canines, i-premolars, kunye ne-molars, ngelixa amazinyo omntwana angenayo i-premolars.Amazinyo athatha indawo yeemolars ezivuthulukayo abizwa ngokuba yi-premolars yokuqala neyesibini.Kwangaxeshanye, i-mandible iya kuqhubeka ikhula ngexesha lokufikisa, idala indawo eninzi ye-molars.I-molars yokuqala esisigxina idla ngokugqabhuka malunga neminyaka emithandathu, kwaye i-molars engapheliyo idla ngokubonakala malunga ne-12 leminyaka yobudala.
I-molar yesithathu esisigxina, okanye izinyo lobulumko, ngokuqhelekileyo aliqhubi kude kube neminyaka eyi-17 ukuya kwe-25, kodwa ngamanye amaxesha ayinakuze ibonakale, ibe yizinyo elichaphazelekayo, okanye ingaze iqhume kwaphela.
Isishwankathelo, kukho amazinyo angama-20 omntwana kunye namazinyo angama-32 asisigxina.
Ividiyo yeveki:https://youtube.com/shorts/Hk2_FGMLaqs?si=iydl3ATFWxavheIA
Ixesha lokuposa: Dec-01-2023