Kanaka niho

Kanaka niho - paa ka hoʻonaʻauao, a i aia i loko o ka alveoli o na ā. Ka mea, pau o māhele o ka mīkini, kona kuleana pili i ua kamaiʻilio ana ia. kanaka niho i ke kiʻekiʻe nona iho no ka differentiation. Ka mea, ua oi aku ka li hoʻohālikelike i ka genus o monkeys.

Aia mau eha pūʻulu o nā niho: molars, premolars, incisors, canines. I dentistry e like ho okumu i puunaueia ma kaʻaoʻao a me ka alo. Ke kanaka i ehiku makahiki ke hoʻohana i ka pokole niho, i mea laila hoʻololi i mau. Mau oeeo? I paha i ka likeʻole, a i ke kumu ma ke 'o ke kino a me ke kaiapuni. No ka 32 makahiki ma laila i nā niho hope o kēiaʻano. Pela, e ike pehea na niho he kanaka hiki wale nō ia i loko o kēia mau makahiki. Keia huina, ua like ia 32. pinepine ka niho hope e hoemi, i kekahi manawa, ka mea e ole pele. Aia He He hana haʻilula e hooholo i ka nui o ka iwi ho okumu aeaiiuo. Ua Ua kapaʻia ka niho. Ma nā mākua, ka mea, ua like penei: ekolu molars, elua premolars, hoʻokahi canine, elua incisors ma kela a me keia hapalua o nā ā.

Anatomia o kanaka niho

Aia he ekolu mau māhele o kēia ho okumu: i ka pāpale aliʻi, ka'ā'ī kumu. I loko o kēlā me kēia niho o ka lua, a ua maheleia i loko o ke kumu Canal, a me ka lua o ka pāpale aliʻi. Ma puka apex ke aupuni 'nā aʻalolo, na moku e hōʻoia i ka maʻamau functioning o ka hui,. Ka mea i loaʻa i loko o kaʻiʻo pepa, i ua poe e wehe ai i connective'aʻaʻa. Wall mea pololei e pili ana i ka naunau 'ili o ka niho ua kapaia vault.

Ma dentistry mau e hoomaopopo eha ili honua me ka ho okumuʻikepili: vestibular, lingual, masticatory (y me premolars a me molars - ka hopuʻana pelane) ihe. Na rula i hoʻokumuʻia pololei ninaninau. I ka pāpale aliʻi a me ka aa e puunaueia i ekolu māhele: ka occlusal, waena, cervical kolu.

kanaka niho i ka luna 'haku mele' ana. Ka mea, i hana dentine, i ua poe kostepodobnoy lole oia hoi o odontoblasts. I ka haku mele 'ana o ka hope nā mea pōhaku paʻakai (kalipuna fluoride, makanekiuma posapahate, kalipuna posapahate) a me ke aloha olona, (collagen).

niho lei huna pakahi aku la ia paa waiwai - ka enamel, a ua kūkulu o ka prisms i i ka mānoanoa o ka 3-5 microns. Ua ninoieo o ka mea pōhaku paʻakai i 'ano like me ka poʻe i loko o ka dentin.

Ka'ā'ī, a aa uhiia me ka lepo pipili - ka waiwai i kohu iwi. Ua ninoieo o 30% o ke aloha 'ona (collagen), kūlana' i ke kaumaha i koe o ka mea pōhaku paʻakai (paʻapuna, kalipuna posapahate).

All hoʻonaʻauao moʻolelo hui ma lalo o ka makahiki: dentition. Ua loaʻa i ka luna 'luna kiʻekiʻe a me nā ka periodontium, nāʻiʻo, ami, salivary glands, niho. Kēia'ōnaehana hoʻolako i nā mana o Kamehameha a mama, a ua komo i loko o ke kahua o ka olelo.

Niho hakaka kapa osculating ho okumu mauka mandible. Iwi nā loko ke aupuni 'ma kaʻaoʻao hema a me ka pono i haawiia i like antimeres.

Ka māhele pilina o nā ā a me ka dentition no nā hana ua kapaia articulation. Mau ano o ka makahiki ka occlusion, a me ka nānā 'ma ka panina mau me ka ho okumu i kamaiʻilio ana. He He hoomaopopo ana ololi i loko o ke kahua o ka occlusion.

Kēia manawa pili ia i ka lākiō o ka luna, haʻahaʻa dentition i panina o nā ā. ʻO kēia mau 'ano o ka malocclusion: alveolar e pio mai aia ma luna o ka mea like iliwai, kekahi o ia ua aia ma ke alo o ka mea' ē aʻe. Physiological noʻonoʻo i kekahi kahua ma i ka lalani luna o ka niho ua i kekahi mau mea 'oni iki imua me ka pili ana i ka lalo. Eia naʻe, ma lalo o kela pathological rula i loko o ka moʻolelo lua, trauma, occlusion e ĸokoĸa ana nä pane. Kanaka niho ma keia hihia, ke hoʻololi i ko lakou helehelena a me ka haku mele 'ana.