DEH 103: Dental Anatomy
Chapter 5: Morphology of Permanent Molars
Chapter 5: Morphology of Permanent Molars
Kartei Details
| Zusammenfassung | Ce fichier d'apprentissage couvre l'anatomie dentaire au niveau universitaire, en se concentrant sur les molaires maxillaires et mandibulaires, leurs éruptions, structures et fonctions. Il explore les caractéristiques des premières, deuxièmes et troisièmes molaires, y compris les fosses, les sillons et les hauteurs des cuspides. Ce fichier d'apprentissage est utile pour les étudiants en médecine dentaire qui souhaitent comprendre la morphologie et le développement des molaires, ainsi que leur rôle dans la mastication et la maintenance de la dimension verticale du visage. |
|---|---|
| Karten | 29 |
| Lernende | 1 |
| Sprache | Français |
| Kategorie | Medizin |
| Stufe | Universität |
| Erstellt / Aktualisiert | 30.12.2013 / 12.07.2014 |
| Weblink |
https://card2brain.ch/box/deh_103_dental_anatomy5
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| Einbinden |
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Molars are called _____ teeth becasue they do not replace a primary tooth.
Non-succedaneous teeth
What are the functions of molars?
- Mastication (grinding)
- Maintenance of vertical dimension of the face
- Support the cheeks (esthetics)
FYI: they are the largest and strongest teeth
How many lobes does a molar develop from?
3-5 lobes each cusp is a seperate lobe
The maxillary 1st molar is the _____ tooth in the arch.
Largest
There are _____ well developed cusps and a supplementery cusp known as _____ which is present _____% of the time.
- 4 well developed cusps
- Cusp of Carabelli (supplemental)
- Present 70% of the time
What is the height of the cusps from largest to smallest on a maxillary 1st molar?
ML --> MB --> DB --> DL
Maxillary 1st and 2nd molars have _____ roots which are ___.
- 3 roots
- MB, DB, and L
The furcation of a maxillary 1st molar is approximately _____ mm from the CEJ.
4 mm
What is the order of the root lengths of a maxillary 1st molar?
L --> MB --> DB
True/False:
The MB root of a maxillary 1st molar will not hide the DB root when viewed form the mesial.
False: it will hide the DB root b/c it is bigger
The furcation of maxillary 1st molars on the distal is approximately ____ mm frm the CEJ
5 mm
How many grooves does a maxillary 1st premolar have?
3-4 cusps
- Central
- Buccal
- Distal oblique
- Lingual
- Transverse (this is not always present b/c crosses over the obliqu ridge to join fossa in the cusp of Carabellei)
What are the 4 fossae on a maxillary 1st molar?
- Central (largest)
- Distal oblique
- Mesial triangular
- Distal triangular (minute)
This is projections of enamel that can be found on ridges.
Tubercles
When does the primary and permanent; maxillary and mandibular 1st molars erupt?
- Mandibular primary: 12 months
- Maxillary primary: 14 months
- Mandibular permanent: 6-7 years
- Maxillary permanent: 6-7 years
What is the time of eruption for primary and permanent; maxillary and mandibular 2nd molars?
- Mandibular primary: 20 months
- Maxillary primary: 24 months
- Mandibular permanent: 11-13 years
- Maxillary permanent: 12-13 years
What is the cusp height from largest to smallest of the maxillary 2nd molar?
ML --> MB --> DB --> DL
What are the 2 major gooves on the maxillary 2nd molar?
- Buccal
- Central
There is no oblique, lingual, or transverse groove b/c there is no DL cusp
What are the 3 major fossa on the maxillary 2nd molar?
- Mesial
- Distal
- Central
The mandibular (1st / 2nd / 3rd) molar is the largest in its arch.
Mandibular 1st
A mandibular 1st molar has _____ major cusps and ____ roots.
- 4 major cusps
- 2 roots (Mesial and Distal)
What is the cusp height from largest to smallest of a mandibular 1st molar?
ML --> DL --> MB --> DB --> D
- The furcation on the buccal view of a mandibular 1st molar is approximately _____ mm from the CEJ.
- The furcation on the lingual view of a mandibular 1st molar is approximately ____ mm from the CEJ.
- 3 mm
- 4 mm
What are the 3 major fossae of a mandibular 1st molar?
- Central
- Mesial triangular
- Distal triangular
What is the cusp height of a mandibular 2nd molar from largest to smallest?
ML --> DL --> MB --> DB
True/False:
The 3rd molars do not vary much from the 1st and 2nds.
False: They vary more than any other tooth in size and shape.
A piece of tissue that covers a partially erupted 3rd molar.
Operculum
When the operculum is traumatized or infected.
Pericornitits
What is the time of eruption of maxillary and mandibular 3rd molars?
- Mandibular: 17-21 years
- Maxillary: 17-21 years
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