Kutheni Ufuna I-Premolars Yakho Kodwa Awukho Ukuhlakanipha Kwakho
Kanye njengokuba igama labo libonisa, i-premolars ifumaneka ngaphambi kokuba imirhumo emlonyeni womntu. La mazinyo ayaziwa nangokuthi yi-bicuspids. I-premolars ithathwa njengamazinyo ezisesigxina, njengoko zisebenza ukukhokela ukutya kwi- cuspids kufuphi nomlomo obuyela emva kwi-molars kufuphi nomva emlonyeni wokufuna.
Iisiseko ze-Human Premolar
Izidalwa zabantu zinezizathu ezisibhozo zokuqala.
Kukho ezimbini i-premolars kwisinye sezibane ezinezinyathelo zomlomo zamazinyo. Nangona ubudala bexesha ngexesha lokufika luyahluka, i-premolar yokuqala ifika ngokufanelekileyo malunga neeminyaka eli-9 ubudala. I-premolar yesibini ilandelwa kamva emva kweminyaka engama-10 ubudala.
I-Anatomy ye-Premolar
I-anatomy ye-premolar ifana neyokuqala yeesibini kunye neyesibini, nangona zikhulu kakhulu xa zithelekiswa. I-Premolars ibe neengcambu ezimbini ezigxininiswe ngokuqinisekileyo kwithambo lokuzinza.
Ukufanisana kwabo kuMolars
I-Premolars ifana kakhulu neemeko ngokubhekiselele kwi-anatomy kunye nesakhiwo. Nangona kunjalo, ngokungafani ne-premolars, abantu abadala baxhomekeke ukuba babe ne-12 molars , ngelixa banesibhozo esinesibhozo kuphela. Iimilo zifumaneka ngaphaya kwamanye amazinyo angaphambili onke amazinyo, njengoko zimi emva emlonyeni emva kwesihlathi. I-Molars ihamba phambili ngaphaya kwe-premolars, njengokuba okokuqala kuvela emlonyeni osondele kwiminyaka emithandathu ubudala.
Kukho ixesha elifanelekileyo phakathi kweembonakalo zokuqala kunye neyesibini, njengokuba i-molar yesibili ingabonakali kude kube ne-12 okanye 13.
Izinyo lobulumko
I-molar yesithathu ngokuqinisekileyo iyaziwa kakhulu kwimimiselo. Uninzi lwabantu lubhekisela kwi-molar yesithathu njengezinyo zokuhlakanipha. Amazinyo ezilumko zivakala phakathi kweminyaka eyi-17 ne-25 ubudala.
Zivame ukususwa emlonyeni , njengoko kuninzi isithuba esaneleyo sokubamkela, kwaye ngoko ke kunokubangela iintlobo ezahlukeneyo zeengxaki zamazinyo kunye namanye amazinyo. Njengoko amazinyo ehlakaniphayo aphumayo ahlala eshukumisa amanye amazinyo ngaphandle, aguqula ukulungelelanisa kwamazinyo.
Njani i-Premolars kunye neMolars esebenza kunye
I-Molars iyona inkulu kunamazinyo onke emlonyeni. Ubungakanani babo buyimfuneko njengoko zisetyenziselwa ukugaya ukutya zibe ngamaqhezu amancinci ukuze kube lula ukugwinya, kwaye kungagcini. I-molars yenzelwe kwaye ihloselwe ukugcina amandla amakhulu aveliswa kukutshiza, ukuxubha kunye nokugaya okwenzeka kwindawo ye-molars. I-premolars itholakala ngqo phambi kweemeko kwaye isetyenziselwa ukudlulisa ukutya ngokubuyiselwa.