![Muaj pes tsawg tus kwj dej muaj nyob hauv qhov thib ob ua ntej yug menyuam? Muaj pes tsawg tus kwj dej muaj nyob hauv qhov thib ob ua ntej yug menyuam?](https://i.answers-medical.com/preview/medical-health/13959735-how-many-canals-are-there-in-upper-second-premolar-j.webp)
Video: Muaj pes tsawg tus kwj dej muaj nyob hauv qhov thib ob ua ntej yug menyuam?
![Video: Muaj pes tsawg tus kwj dej muaj nyob hauv qhov thib ob ua ntej yug menyuam? Video: Muaj pes tsawg tus kwj dej muaj nyob hauv qhov thib ob ua ntej yug menyuam?](https://i.ytimg.com/vi/AKlpR1Prliw/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
ob tug kwj dej
Yog li ntawd, yuav ua li cas muaj pes tsawg kwj dej nyob rau sab sauv premolar?
ob tug kwj dej
Kuj Paub, uas premolar muaj 2 lub hauv paus? Canines thiab feem ntau premolars , tsuas yog rau maxillary ua ntej premolars , feem ntau muaj ib hauv paus . Maxillary ua ntej premolars thiab feem ntau ntawm cov hniav puas ntsoog muaj ob lub hauv paus . Maxillary molars feem ntau muaj peb keeb kwm . Cov hniav yog txhawb nqa hauv pob txha los ntawm ib qho khoom siv txuas, hu ua periodontium, uas cuam tshuam nrog cov hauv paus.
Ib yam li ntawd, tej zaum koj yuav nug, muaj pes tsawg kwj dej puas muaj premolar?
Tib neeg cov hniav tej zaum yuav muaj ib mus rau plaub hauv paus kwj dej, nyob ntawm seb lub cev ntawm tus hniav. Molars, tej zaum yuav muaj 2 mus rau 4 kwj dej, premolars yuav muaj 1 mus rau 2 kwj , cuspids tej zaum yuav muaj 1 txog 2 kwj , thiab thaum kawg, incisors feem ntau muaj 1 kwj dej.
Muaj pes tsawg tus kwj dej muaj ib tus hniav?
Koj lub hauv ntej incisor thiab canine cov hniav (tom cov hniav ) feem ntau muaj ib lub hauv paus muaj 1 paus kwj dej . Premolars thiab rov qab molars cov hniav (zom cov hniav ) muaj 2 lossis 3 lub hauv paus, txhua muaj 1 lossis 2 hauv paus cov kwj dej . Cov hauv paus hniav ntau dua a zuv muaj , qhov kev kho mob yuav siv sijhawm ntev dua.
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