Isakhiwo izinyo: ubuqili yokwakheka ezinxulumene ukusebenza

Umsebenzi wokuqala amazinyo (njengoko umntu okanye isilwanyana) nabani akukho mfihlakalo. Oku - egqugqisayo ukutya (kwizilwanyana kwakhona makafake ubambe ixhoba). Komzimba amazinyo kunye nemilo yabo yahlukile kancinane ngokuxhomekeke function. Kukho iindidi ezine: siphume, canines, premolars kunye imihlathi. Xa abantu, iintlobo ezimbini zokuqala kufuneka umsebenzi ukusika, nabokugqibela - eyo.

Indlela abasebenza

Inani amazinyo ebantwini - 32, lahlukile izilwanyana (kuxhomekeke species). Bona zibekwe umqolo eliphezulu kunye nemihlathi asezantsi. izinyo isakhiwo nayiphi na amathambo kwemihlathi ngokubanzi enye, zenziwe kwithishyu efanayo. Ngamnye kubo ibekwe emngxunyeni layo ithambo zawuyilayo aphantsi okanye kwemihlathi yangasentla, ebizwa alveoli. Anatomically nangayiphi izinyo la masebe zilandelayo: isithsaba, intamo, ingcambu (enye okanye ngaphezulu). Crown - nakumphezulu kakhulu ifikeleleke ukuba zihlolwe, nibonise ngaphezu intshungama. Womlomo wesibeleko lolona hlobo kwiCandelo encinane obhityileyo, ibekwe inwebu ubukhulu ethambileyo. Ngako oko, i ingcambu - inxalenye esiya ubunzulu equleni. ekupheleni kwayo ngencam izinyo kuthiwa, ngenxa yomzimba wakhe zeyele luvo kunye imithambo yegazi. isakhiwo izinyo (nokuba canine okanye izinyo) elibalaseleyo ifomu lwangaphandle nje kuphela, kodwa ke inani iingcambu (1 ukuya ku-3). Imilo mgawuli - tyaba kwaye ububanzi, baba elidlula. Canines luphawulwa ekuloleni bit, premolars kunye imihlathi - ukuhlafuna kumphezulu ephawulekayo kolwabelo olungalinganiyo.

Ukuchaza isakhiwo lwangaphakathi izinyo, kufuneka kuqatshelwe ukuba ezi zoleko zeethishu amalungiselelo kuyo. Umaleko sinzulu - le yintlama - bubonakaliswe neuro nemithambo bundle. Dentin eziyingqongileyo ke, maxa wambi ibizwa ngokuba ithambo wamazinyo. Yinto entle okuqinileyo, kodwa kubongoza xa baboniswa iintsholongwane. Kodwa echaza isakhiwo izinyo kule nwebu umphezulu, kuyimfuneko ukuba ayikho enye kwi isithsaba kunye neengcambu. enamelled lokuqala (ngokuphawulekayo okuqinileyo, eziquka 97 iityuwa% bezimbiwa). Umaleko engaphandle nengcambu ubunjwe zesamente, apho, ngaphandle ityuwa zekalika inani elikhulu imicu collagen. Lwakutsha nje iye yaba ithambo, ukudala periodontal (yaye ngaloo ndlela kuqhotyoshelwe izinyo ukuba umngxuma wayo).

iimpawu zothelekiso

Njengoko kukhankanyiwe ngasentla, nezinyo yabantu inemisebenzi ezimbini eziphambili: ukusuka siphume kunye canines - ukusika, xa premolars kunye imihlathi - ukugaywa. Xa ezanyisayo, ezimbini zokugqibela enze injongo efanayo. Kodwa siphume kunye canines yahlukile. Amarhamncwa zokuqala zisetyenziselwa "kunqunyulwa" iinyama ukutya, aso - ngokubulala ubambe nexhoba. ukusika amazinyo phambi Azityi eziphilayo kufuneka ukugawula izityalo, iyithathe ukutya. Canines badla ngokungabikho. Ukuba kusekho, wena thaca kuphela into eyindoda. ngokuqhelekileyo zisetyenziswa ukuba alwe elowo enye imazi kunye akhokele inyathelo (pack). isakhiwo ngemikroskopu amazinyo, njengoko kuchaziwe apha ngasentla, kuzo zonke iintlobo ezanyisayo izinto ayimise efanayo eziphilayo.

Ke kaloku, ukuba uyazi, uchaze ukuba iqulathe kwamazinyo! Le inforrmatsiya kwezinye iimeko kunokuba luncedo!