Lecture 1 - Intro to dental morph Flashcards
what is included in the dental arch
teeth gingiva and associated bone
what is the maxillary arch
the upper arch including the associated teeth
what is the mandibular arch
the lower arch including the associated teeth
which arch of the jaw moves
only the mandible
how many permanent teeth are there
32
what is the permanent dental formula
I 2/2 C 1/1 P 2/2 M 3/3
what does the permanent dental formula describe
the number and order or permanent teeth
what are the anterior teeth and how many of each
incisors (8) and canines (4)
what are the posterior teeth and how many of each
premolars (8) and molars (12)
how may deciduous teeth are there
20
- 8 incisors
- 4 canines
- 8 molars
what is the decidous dental formula and what does it describe
describes the number and order of primary teeth
I 2/2 C1/1 M 2/2
what covers the crown of the tooth
enamel
what covers the root of the tooth
cementum
what is enamel
the dense hydroxyapatite surface of the crown
what is dentin
the inner hard layer of the crown and root
what is pulp
the vascular innervated portion of the tooth
what is cementum
the outer layer of the root surface
what is the DEJ
dentoenamel junction
-junction of enamel and dentin layers
what is the CEJ
cementoenamel junction
- junction of enamel and cementum layers
what is the cervical line
junction of the anatomical crown and root
what is the clinical crown
the portion of the tooth that is visible in the mouth
what is the anatomical crown
the crown above the CEJ
what is a cusp
projection on a crown
what is a fossa
depression or concavity between cusps or ridges
what is a ridge
linear elevation on the surface of a tooth, named according to location
what is a cingulum
lingual crown projection on anterior teeth
what is a groove
line between the primary parts of a crown or root
what is a pit
pinpoint depression at the junction or termination of a groove
what is a lobe
primary center of development within a tooth
what are mamelons
round projections of enamel on newly erupted teeth that develop from lobes
what is the root apex
the opening in the root for entrance of the pulp
what is the pulp chamber
chamber containing dental pulp
what is the pulp horn
highest projection of pulp chamber within the crown
what is the pulp canal
inner portion of the root containing the dental pulp
what does the periodontium include
-gingiva
- cementum
- alveolar bone
- periodontal ligament
what are the parts of the gingivia
-free gingiva
- attached gingiva
- interdental pulp
what is alveolar mucosa
dark red, loose attachment to the underlying bone
what is the mucogingival junction
junction of the alveolar mucosa and gingiva
where is the free gingiva located
closer to the tooth crown, not attached to the bone
where is the free gingival groove
separates attached gingiva from free gingiva
what is the interdental papilla
the triangular shaped gingiva that occupies the gingival embrasure
what is the gingival sulcus
space between tooth surface and narrow cervical collar of free gingiva
what is the periodontal ligament
surrounds tooth root and attaches tooth to alveolar bone (periodontal fibers)
what does the alveolar bone do
(alveolar proccess), forms and supports tooth sockets
