Lecture 1- Intro Flashcards
dental arch
teeth, gingiva, and associated bone
maxillary arch
the upper arch including the associated teeth
mandibular arch
the lower arch and associated teeth
which arch is the one that moves?
mandible
how many permanent teeth?
32
permanent dental formula
notation system that describes the number and order of permanent teeth
I 2/2 C 1/1 P 2/2 M 3/3
anterior teeth include:
incisors (8)
canines (4)
posterior teeth include:
premolars (8)
molars (12)
how many deciduous teeth?
20
10 per arch: 4 incisors, 2 canines, 4 molars
deciduous dental formula
the notation system which describes the number and order of primary teeth
I 2/2 C 1/1 M 2/2
crown
covered with enamel
*hardest substance in the mouth
root
covered with cementum
*one or more roots
enamel
the dense hydroxyapatite surface of the crown
dentin
the inner hard layer of the crown and root
pulp
the vascular innervated portion of the tooth
cementum
the outer layer of the root surface
dentoenamel junction (DEJ)
junction of enamel and dentin layers
cementoenamel junction (CEJ)
junction of enamel and cementum layers
cervical line
synonymous w/ CEJ
junction of the anatomical crown and root
clinical crown
the portion of the tooth that is visible in the mouth
*can differ due to health of gingiva
anatomical crown
the crown above the CEJ
facial (buccal/labial) surface
outermost surface towards cheek or lips
lingual (palatal) surface
innermost surface toward the tongue or palate
mesial surface
towards the median line
distal surface
away from the median line
incisal surface
the biting or incising edge of anterior teeth
occlusal surface
the biting or chewing surface of posterior surface
cusp
projection on a crown
fossa
depression or concavity b/w cusps or ridges
ridge
linear elevation on the surface of a tooth and is named according to its location
cingulum
lingual crown projection on anterior teeth
groove
line b/w the primary parts of a crown or root
pit
pinpoint depression at the junction or termination of a groove
lobe
primary center of development within a tooth
mamelon
round projections of enamel on newly erupted teeth
*incisal remnant of incisor development
furcation
where root divides
root apex
the opening in the root for entrance of the pulp
pulp chamber
chamber containing dental pulp
pulp horn
highest projection of pulp chamber within the crown
pulp canal
inner portion of the root containing the dental pulp
periodontium
the tissues that surround the teeth
periodontium includes:
gingiva
cementum
alveolar bone
periodontal ligament
gingiva
covers the bone and surrounds the cervical portions of teeth
gingiva can be divided into:
free gingiva
attached gingiva
interdental papilla
alveolar mucosa
dark red; loose attachment to the underlying bone
mucogingival junction
junction of the alveolar mucosa and gingiva
free gingiva
closer to the tooth crown, not attached to the bone
free gingival groove
separates attached gingiva from free gingiva
interdental papilla
the triangular shaped gingiva that occupied the gingival embrasure
gingival sulcus
space b/w tooth surface and narrow cervical collar of free gingiva
*not seen visually, but can be evaluated with a periodontal probe
periodontal ligament
surrounds tooth root and attaches tooth to alveolar bone
alveolar bone
forms and supports tooth sockets
*AKA alveolar process
