1. Hniav Tubules yog Me me thiab zaum hauv qab koj cov enamel… Lawv nyob hauv lub dentin, uas yog txheej hauv qab koj cov hniav enamel. Hniav tubules yog me me tubules uas khiav los ntawm sab hauv ntawm cov hniav (lub pulp chamber) tawm los ntawm cov tawv dentin thiab xaus rau hauv qab cov enamel.
Cov hniav txheej twg muaj tubules?
Dentin. Ib feem ntawm cov hniav uas yog hauv qab enamel thiab cementum. Nws muaj microscopic tubules (cov hlab me me lossis cov kwj dej).
tubules hauv cov hniav yog dab tsi?
Dentin tubules yog me me, hollow microscopic channels uas taug kev los ntawm sab hauv ntawm tus hniav(qhov twg lub pulp yog) tawm los ntawm lub dentin, xaus rau hauv qab cov enamel. Dentin yog txheej nruab nrab ntawm cov hniav, tsim cov hniav ntau.
enamel yog dab tsi?
Enamel yog cov khoom hnyav tshaj plaws hauv tib neeg lub cev thiab muaj cov feem pua ntawm cov zaub mov ntau tshaj plaws (ntawm 96%), nrog dej thiab cov khoom siv organic ua ke. Cov pob zeb tseem ceeb yog hydroxyapatite, uas yog crystalline calcium phosphate.
Yuav ua li cas hauv qab cov hniav ntawm koj cov hniav?
Cov hniav hauv qab yog txheej dentin ntawm tus hniavDentin yog cov khoom ntxeem tau. Thaum ruaj, nws tsis muaj zog npaum li cov hniav enamel. Cov pores me me hauv lub dentin yog hu ua dentinal tubules, thiab lawv pab cov hniav sau npe ntawm qhov siab thiab kub.
