Hanganga niho: whaktauiratia kikokiko hono ki te mahi

Ko te mahi tuatahi o te niho (rite te tangata kararehe ranei) mo te tangata e kore te ngaro. Reira - huri o te kai (i roto i te kararehe hopu ano, ka mau taonga). Ko paku rerekē Anatomy o niho, me ratou āhua i runga i te mahi rānei. E wha momo: incisors, canines, premolars me molars. I roto i te tangata, i te momo tuatahi e rua i te mahi tapahi, me te whakamutunga - kuru.

Kia pehea te mahi ratou

Ko te tokomaha o niho i roto i te tangata - 32, ko reira rerekē i roto i te kararehe (i runga i ngā momo). E tū ana i roto i te rarangi o te runga me kauae o raro. hanganga niho ki tetahi o nga wheua kauae i whānui te taua, e tito ratou o rite kiko. Kei ia o ratou i roto i ona ake rua wheua i hanga raro ranei runga kauae, ka karanga alveoli. Anatomically i roto i tetahi niho ko nga tari e whai ake nei: karauna, kaki, pakiaka (kotahi, neke atu rānei). Karauna - te wahi o runga o te wātea tino mo te tirohanga, e kokiri ana i runga i te kapia. Ko te waha ko te Division kikokore iti, kei roto i te matotoru kiko ngohengohe. Nä, ko te pakiaka - te wahi e haere ki te hohonu o te poka. ka karanga Ko tōna te mutunga o te matamata o te niho te, i roto i hinga ia tinana ki roto ki nga raru me oko toto. hanganga niho (ahakoa rei titiwha ranei) he pai e kore anake te ahua o waho, engari ano hoki te maha o pakiaka (1 ki te 3). Hanga cutter - flat, me te whanui, to ratou he mata whakairo. āhuatanga canines whakakoi moka, premolars me molars - ngaungau mata mārika i pāhiwihiwi.

Hei whakaahua i te hanganga ā-o te niho, kia tuhia te reira e te paparanga kikokiko whakaritea roto. Ko te paparanga hohonu - te penupenu - kanohi e te paihere neuro-iaia. Dentin karapoti reira, i ētahi wā ka kīia ki rite wheua niho. Ko te tino totoka, engari ka taea e fakamolū reira ka whai wāhi ki microorganisms. Ko whakamārama i te hanganga o te niho i roto i te apa mata, he mea e tika ana ki te mea e kore ko reira te taua i te karauna me te pakiaka. enamelled Tuatahi (strikingly totoka, i ngā 97 tai% kohuke). Ko te kahu i waho o te pakiaka titoa te o sima, i nei, haunga he nga tai kotakota he maha nui o muka collagen. Tata whatu ki te wheua, te hanga periodontal (a ko te kupu āpiti i te niho ki tona rua).

āhuatanga whakataurite

Ka rite ki whakahuatia i runga ake, kua he niho tangata e rua ngā mahi matua: i te incisors me canines - whakairo, i roto i premolars me molars - huri. I roto i ngā kararehe, i te rua muri te mahi i te whakaaro rite. Ko hoki incisors me canines he rerekē. Kei te whakamahia te konihi tuatahi ki "tapahia" nga mongamonga kai, purakau - mō te patu me te pupuri i te patunga. Me niho tapahi Front o herbivores mea ora ki te tapahia otaota, pa tonu hoki kai. he mea motu maha canines. Ki te kei ratou tonu i reira, e te aroaro koutou anake i roto i nga tane. Kei te nuinga ratou whakamahia ki te whawhai tahi i te tahi mo te wahine me te mata i roto i te taahiraa (he mōkihi). hanganga mōkitokito o te niho, te whakaahuatanga i runga, i roto i ngā momo katoa o kararehe rauropi pakeke rite ora.

Na e matau ana koutou e pā ana ki, he aha ngā reira o niho! Tenei inforrmatsiya i roto i ētahi wā kia ai taua mea whai hua!