Mutum hakora

Human hakora - m ilimi, wanda ake located in Alveoli na jaws. Su ne na game sassa na inji, wanda aiki ne taban da ake da shi. mutum hakora da wani babban iya aiki domin bambantawa. Su ne da yawa karami idan aka kwatanta da HALITTAR na birai.

Akwai hudu kungiyoyin na hakora: molars, premolars, incisors, canines. A Dentistry kamar samuwar raba da gefen kuma gaban. Mutumin ya zuwa shekaru bakwai aiki da wucin gadi hakora, wanda suke sa'an nan canza zuwa dindindin. Wadannan alkaluma ne batun bambancin, wanda ake sa da peculiarities na abinci mai gina jiki da kuma muhalli. Domin shekaru 32 a can karshe hakora na da irin wannan. Don haka, sani yadda da yawa hakora wani mutum zai iya kawai a wannan shekara. Wannan adadin shi ne daidai 32. A karshe hakora sukan rage, wani lokacin ba su shiga. Akwai musamman dabara domin sanin adadin kashi samuwar bayanai. Shi ne ake kira da hakori. A manya, shi ne kamar haka: uku molars, biyu premolars, daya canine, biyu incisors a kan kowane rabin na biyu jaws.

Anatomy of mutum hakora

Akwai sassa uku na wannan samuwar: kambi, wuyansa tushen. Tu kowane hakori ne a rami, wanda aka raba a tushen canal da rami na kambi. Ta hanyar rami koli located jijiyoyi, kayayyakin da tabbatar da al'ada aiki na sashin jiki. Aka sãme su a ~ angaren litattafan almara, wanda aka wakilta sako-sako da connective nama. Wall cewa kai tsaye nasa ne da daukan taban surface wani hakori aka kira vault.

A Dentistry m rarrabe hudu surface tsarin data: vestibular, lingual, masticatory (y premolars da molars - clamping jirgin sama) lamba. The dokokin kafa ta kai tsaye jarrabawa. Kambi da kuma tushen kasu kashi sassa uku: cikin occlusal, tsakiya, mahaifa uku.

mutum hakora da hadaddun abun da ke ciki. Suna kafa dentine, wanda aka wakilta kostepodobnoy zane kunshi odontoblasts. A abun da ke ciki na karshen hada da ma'adinai salts (alli fluoride, magnesium phosphate, alli phosphate) da kuma Organic zaruruwa (collagen).

hakori kambi rufe musamman m abu - da enamel, wanda aka gina daga prisms da cewa suna da wani kauri daga 3-5 microns. Ya kunshi ma'adinai salts kama da waɗanda suke a cikin dentin.

Cikin wuyansa, kuma tushen rufe da sumunti - wani abu da yayi kama kashi. Ya kunshi 30% na Organic abubuwa (collagen), zauna sauran nauyi na ma'adinai salts (alli carbonate, alli phosphate).

All ilimi na baka a hade a karkashin ajalin: dentition. Yana yana da wani hadadden matsayi da ya hada da periodontium, tsokoki, da gidajen abinci, salivary gland, hakora. Wannan tsarin samar da ayyuka na daukan taban da ake da hannu a cikin samuwar magana.

Hakora antagonists kira osculating samuwar babba kashin dadashinsu. Kashi gabobin located a kan hagu da kuma gefen dama ana kira a matsayin antimeres.

A sarari dangantaka da jaws da dentition ga dukkan ƙungiyoyi da aka kira sanarwa akan abinda. Musamman irin na lokaci ne occlusion, wanda aka ƙaddara ta rufe wadannan tsarin a lokacin taban da ake. Yana da wani kayyade factor a cikin samuwar wani occlusion.

Wannan kalma tana nufin da rabo daga cikin manya, ƙananan dentition a lokacin ƙulli daga cikin jaws. Wadannan iri malocclusion: alveolar baka located a kan wannan matakin, daya daga cikinsu aka located a gaban sauran. Physiological dauke da wani halin da ake ciki a cikin abin da babba jere na hakora ne da ɗan canja gaba tare da girmamawa ga kasa. Duk da haka, a karkashin daban-daban pathological yanayi a baka rami, rauni, occlusion iya bambanta. Human hakora a cikin wannan hali, zai iya canza su siffar da kuma abun da ke ciki.