DEH 103: Dental Anatomy
Chapter 1: Introduction to Dental Anatomy
Chapter 1: Introduction to Dental Anatomy
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Flashcards
This is the 3 protuberances on anterior teeth that are newly erupted.
Mamelons
This is the boarder of the enamel that form mesial or distal margins of the occulsal/lingual surfaces of teeth.
Marginal ridge
This descends from the cusp tip to the middle of the occlusal.
Triangular ridge
This is the lingual obe of anterior teeth, bulge at cervical third.
Cingulum
This is a ridge that is only on the maxillary molars that runs from disobuccal to mesiolingual triangular ridge.
Oblique ridge
This ridge is formed when 2 triangular ridges join between the buccal and lingual cusps.
Transverse ridge
This is a depression that runs from mesial to distal on the occlusal table.
Central groove
This is the grooves that branch off the central groove towards the line angles. Supplemental groves are shallow.
Triangular developmental grooves
These are vary narrow clefts and depressions at the depth of the grooes, usually caries will begin here.
Pits and fissures
This is shallow derpessions or concavitieis on the lingual of anterior teeth, that may end in a pit.
Fossa
These seperate the tooth lobes, named according to location. (central groove, lingual froove, buccal groove).
Developmental groove
This is the base of the root before dividing. It only occurs in multi-rooted teeth.
Root trunk
This is where the root trunk divides. It creates the _____ which is the space between the roots. (Multirooted teeth only)
- Furcation
- Furcation Region
This is a division of the root trunk into 2 branches. Seen in mandibular molars and maxillary 1st premolars.
Bifurcation
This is a division in the root trunk into 3 branches. Seen in maxillary molars.
Trifurcation
This is the tip or end of the root.
Apex
This is the division of the anatomical crown from the root.
Cervical Line (CEJ)
Where is the CEJ curveture greater?
- Mesial
- Distal
- Anterior
- Posterior
(Choose the two answeres that are correct)
- Which direction does the CEJ curve in the interproximal surfaces?
- Which direction does the CEJ curve on the facial and lingual surfaces?
- Interproximal: occlusally/incisally
- Facial/Lingual: apically
What is the purpose of the height of contour?
It deflects food and stimulates the gingiva.
What happens if the HOC is insufficient or excessive?
- Insufficient contour: there is inadequte protection and too much stimulation
- Excessive contour: there will be inadequate stimulation
Where is the HOC located on the anterior as compared to the posterior?
Anterior HOC is located more occlusally and will move more cervical as you move posterior
Dr. _____ was the first to describe ideal occlusion in the early 1900's.
Dr. Edward H. Angle
True/False:
The maxillary posterior teeth are slightly more buccal and distal to the corrosponding mandibular tooth.
True
The _____ is where the maxillary curve is convex and the mandibular cure is concave. It is also known as? Another name for the same description is?
- Anterioposterior Curve
- Curve of Spee
- Mediolateral Curve (of Wilson)
