Anatomical Parts Of A Tooth & Oral Cavity Features Flashcards
The teeth, gingiva, and associated bone
Dental arch
The upper arch including the associated teeth
Maxillary arch
The lower arch and associated teeth
Mandibular arch
In the human skull, what is the only bone that moves?
Mandible
How many permanent teeth do we have?
32
The maxillary arch and the Mandibular arch get divided into what?
four quadrants
What does this image show?
Incisors
What does this image show?
Canines
What does this image show?
Premolars
What does this image show?
Molars
What does the notation system describe?
The number and order of permanent teeth
What is the permanent dental formula?
(I) 2/2 (C) 1/1 (P) 2/2 (M) 3/3
Where is each arch divided in half?
The midline
What is each half arch considered?
A quadrant
What are the four quadrants?
Maxillary right quadrant, Maxillary left quadrant, Mandibular right quadrant, Mandibular left quadrant
Each arch can be divided into ____ teeth and ____ teeth.
Anterior teeth and posterior teeth
What comprises our anterior teeth?
8 incisors, and 4 canines
What comprises our posterior teeth?
8 premolars, and 12 molars
What is another name for deciduous teeth?
Primary teeeth
How many deciduous teeth do we get?
20 deciduous teeth
How many deciduous teeth do we get per arch?
10 per arch
What deciduous teeth make up each arch?
4 incisors
2 canines
4 molars
The notation system which describes the number and order of primary teeth is called:
Deciduous dental formula
What is the Deciduous dental formula?
(I) 2/2 (C) 1/1 (M) 2/2
What part of the tooth is covered with enamel?
The crown
What part of the tooth is covered with cementum?
Root(s)
What covers the crown? What covers the roots?
Enamel; cementum
What is the dense hydroxyapatite surface of the crown?
Enamel
What is the inner hard layer of the crown and root?
Dentin
What is the vascular innervated portion of the tooth?
Pulp
What is the outer layer of the root surface?
Cementum
What is the junction of enamel and dentin layers?
DentoEnamel Junction (DEJ)
What is the junction of enamel and cementum layers?
CementoEnamel Junction (CEJ)
What is the junction of the anatomical crown and root?
Cervical Line
What is the portion of the tooth that is visible in the mouth?
The clinical crown
What is the crown above the CEJ called?
Anatomical crown
What are these arrows pointing too?
Red- Enamel
Green- Dentin
Blue- Pulp
Yellow- Cementum
What is the purple arrow pointing to? What is the blue arrow pointing to?
Purple- DEJ
Blue- CEJ
What is the outer most surface toward the cheek or lips?
Facial (buccal/labial)
What is the inner most surface toward the tongue or palate?
Lingual (palatal)
What is the surface of the tooth toward the median line?
Mesial
What is the portion of the tooth away from the median line?
Distal
What is the biting edge of anterior teeth?
Incisal
What is the biting or chewing surface of posterior teeth?
Occlusal
Describe these surfaces labeled
Blue- Mesial
Green- Distal
Red- Lingual
Yellow- Facial
What is another name for the facial surface?
The buccal or labial surface
What is another name for the lingual surface?
The palatal surface
What is this image showing?
Incisal surface
What is this image showing?
Occlusal surface
What are the projections on a crown called? (the mountains)
Cusps
What are the depressions or concavity between cusps or ridges called? (Valley)
Fossa
What are these arrows showing?
Green: Cusp
Blue: Fossa
What is the linear elevation on the surface of a tooth called?
Ridge
What is a ridge named according to?
It’s location
What is the lingual crown projection on anterior teeth?
Cingulum
What is the red line pointing to?
Cingulum
What are the lines between the primary parts of a crown or root?
Groove
What is the pinpoint depression at the junction or termination of a groove?
Pit
What is the primary center of development within a tooth?
Lobe
What are the round projections of enamel on newly erupted teeth?
Mamelon
What is the point at which the root divides?
Furcation
What is the opening in the root for entrance of the pulp?
Root apex
What are these arrows pointing too?
Blue: furcation
Yellow: root apex
What is the vascular innervated portion of the tooth?
Pulp
What is the name of the chamber containing dental pulp?
Pulp Chamber
What is the highest projection of pulp chamber within the crown?
Pulp horn
What is the inner portion of the root containing the dental pulp?
Pulp canal
What are the arrows pointing to?
Green: pulp horn
Blue: pulp chamber
Red: pulp canal
What is the the name of the tissues that surround the teeth?
Periodontium
What does the periodontium include?
- Gingiva
- Cementum
- Alveolar bone
- Periodontal ligament
What covers the bone and surrounds the cervical portion of the teeth?
Gingiva
What is another name for gingiva?
Gums
What components is the gingiva divided up into?
Free gingiva, Attached gingiva and Interdental papilla
Pale pink- includes free gingiva, attached gingiva and interdental papilla
Gingiva
Dark red; loose attachment to the underlying bone
Alveolar mucosa
What is the junction of alveolar mucosa and gingiva?
Mucogingival Junction
This labeled area is known as:
Alveolar mucosa
What are the names?
- Alveolar mucosa
- Attached gingiva
- Free gingiva
What is the gingiva that is closer to the tooth crown, not attached to bone?
Free Gingiva
What separates the attached gingiva from the free gingiva?
Free gingival groove
Label this photo
Blue: Free gingiva
Green: Free gingival groove
Red: Gingival margin
Yellow: Attached gingiva
Purple: MGJ
Pink: Alveolar mucosa
What is the triangular shaped gingiva that occupies the gingival embrasure?
Interdental papilla (or gingival papilla)
What is this image pointing to?
Gingival papilla or interdental papilla
Can the gingival sulcus be seen visually? How do we evaluate it?
No; with a periodontal probe
What is the blue arrow pointing to?
Gingival Sulcus
What surrounds the tooth root and attaches tooth to alveolar bone (periodontal fibers)
Periodontal Ligament (PDL)
What forms and supports tooth sockets?
Alveolar bone
What is another name for alveolar bone?
Alveolar process
What are these arrows pointing to?
Pink: periodontal ligament (PDL)
Blue: alveolar bone