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Orofacial Anatomy Exam Questions with Correct Answers 2024 graded a+
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Orofacial Anatomy Exam Questions withCorrect Answers 2024 graded a+
Mucobuccal fold - Answer - Base of the vestibule where the buccal mucosa meets the alveolar mucosa
alveolar mucosa - Answer - Mucosa between the mucobuccal fold and gingiva.
buccal mucosa - Answer - Mucous membrane lining the cheek.
labial mucosa - Answer - the inner surface of the lips
mucogingival junction - Answer - Distinct line of color change in the tissue where the alveolar membrane meets with attached gingivae
attached gingiva - Answer - gingiva that tightly adheres to the bone around the roots of the teeth
interdental papilla - Answer - sharp, pointed projection of gingival in between the teeth
Lingual frenum of tongue - Answer - -thin sheet of tissue
-attaches midline of ventral surface of tongue to floor of mouth
sublingual fold - Answer - ridge of tissue on each side of the floor of the mouth
sublingual caruncle - Answer - small papilla at anterior end of each sublingual fold
Classes of Teeth - Answer - incisors, canines, premolars, molars
arches of teeth - Answer - maxillary and mandibular
primary dentition - Answer - consists of 20 teeth (A-T) that are normally lost during childhood and are replaced by the permanent teeth
what teeth are missing in primary dentition - Answer - premolars
permanent dentition - Answer - consists of 32 teeth that are designed to last a lifetime what are the 3 dentition periods - Answer - primary, mixed, permanent
FDI - Answer - uses dashes
ridges on teeth - Answer - linear elevations on all teeth
cusps - Answer - canine and posterior teeth one major elevation
how many cusps on a maxillary molar - Answer - 2 buccal, 2 lingual, (5th normally on 1st molar)
how many cusps on maxillary premolar and a mand 1st premolar - Answer - 2
how many cusps on a mand 2nd premolar - Answer - 3 - 2 buccal, 1 lingual
Contact area - Answer - Where the proximal sides of two teeth come together and touch
Height of contour - Answer - The greatest distance around a tooth
Embrasures are - Answer - The proximal spaces around a tooth, v-shaped valleys, part of the self-cleaning process
Line angle - Answer - Junction of two walls in a cavity preparation
point angle - Answer - Angle formed by the junction of three surfaces
How many line angles do anterior teeth have? - Answer - 4
How many line angles are there in the posterior teeth? - Answer - 8
How many point angles does each tooth have? - Answer - 4
What do incisors do? - Answer - tear food
What do molars do? - Answer - grind food
What do premolars do? - Answer - pierce and crush
Shapes of teeth - Answer - triangle, pentagon, trapezoid, and rhomboid
gingival sulcus - Answer - space between the free gingiva and the tooth surface
where does attached gingiva begin - Answer - base of gingival sulcus
free gingiva groove - Answer - anatomical feature on outside of the gingiva Col Region - Answer - interdental gingiva has a nonvisible concave shape between facial and lingual surfaces
free gingival groove - Answer - shallow linear depression that separates the free and attached gingiva
Acellular cementum - Answer - 1st layers of cementum deposited at the DCJ and also called primary cementum. At least one layer covers the entire outer surface of each root
with more layers covering the crucial 1/3 near the CEJ.
Cellular cementum - Answer - Called 2ndary cementum
because it is deposited later than the primary
type. Consists of the last layers of cementum
deposited over the acellular cementum
mainly in the apical 1/3 of each root.
Hypercementosis - Answer - excessive production of cellular cementum occurring at the
apex of the root
periodontal ligament - Answer - thinnest part around the middle 1/3 of the root (.15-.38 mm) radiolucent on radiographs
Tooth Function - Answer - Teeth aid in digestion
Bite and tear food
Aid in speech
root is covered by - Answer - cementum
crown is covered by - Answer - enamel
enamel - Answer - hard, outermost layer of a tooth
Hardest substance in the body
Thick in the top and thin in the bottom
resistant to wear and tear
cementum of tooth - Answer - hard connective tissue
fastens tooth securely in the socket
pulp - Answer - soft tissue within a tooth, containing nerves and blood vessels
Eruption of tooth - Answer - is the moving of that tooth through its surrounding tissues
Deciduous or primary tooth - Answer - Calcification starts around 4th month of fetal
bifurcation - Answer - division of root into 2 segments
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