Dental Assisting: Head And Neck Anatomy

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• Answer 50 questions in 15 minutes.
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• Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. lst and second premolars
Upper arch of the teeth
Teeth after cuspids
Rounded depression on a tooth
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids


2. Maxillary Tuberosity
Mandibular central incisors
Calcified masses of dentin
A rounded area beyond the last posterior maxillary tooth
Found near the cementoenamel junction


3. Lingual Vein
Origin of the tooth
Lining covers inside of the oral cavity
Drains the floor of the mouth
Elevates the posterior portion of the tongue and narrows the fauces


4. Periodontium
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Maxillary first molar


5. Hyoid Bone
The corners of the mouth where the top and bottom lip meet
A horseshoe shaped bone lying at the base of the tongue--all the muscles of the tongue and the floor of the mouth attach to this bone
Oval depression of temporal bone in condyloid process
Three cusps/ trifurcated


6. What is another name for premolars?
Bi-cuspids
A bony projection that separates each socket
Set of arches found farther in the back of the throat
A period of both primary teeth and permeant teeth are in the dentition


7. Vestibule
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
A pocket formed by the soft tissue of cheeks and gingiva
Mandibular central incisors
Dividing point of a multi-rooted tooth


8. Stomedeum
Pulverizing or chewing surface
The tip of the chin
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Primitive mouth


9. Dental Sac
An enclosed area that matures into dentin - cementum and pulp
Oval depression of temporal bone in condyloid process
The deepest point of the vestibule
A rounded area beyond the last posterior maxillary tooth


10. Primary Dentin
The bone that separates the root on a tooth
Forms the bulk of the tooth
Incremental line indicating trauma of birth
Wings of the sphenoid bone


11. Maxillary vein
Assists in elevating the chin
The largest of three openings located in the posterior region of the hard palate
Drains the Pterygoid plexus of the veins
6 months/3years


12. Furcation
4th week
Dividing point of a multi-rooted tooth
Disk that acts like a cushion between the temporal bone and the condyloid process
The gingiva in the floor of the gingival sulcus that attaches to the enamel


13. Alveolar Mucosa
A line of demarcation between the attached gingiva and alveolar mucosa
Appears to be loosely attached - covering the alveolar bone.
Surface towards the midline
2 to 3 pints


14. Lines of Retzius
Primary and permanent
Incremental lines around the layers of the enamel matrix
Assists in elevating the chin
The moveable attachment of the muscle


15. Tubercle of the Lip
Resist rotational forces and hold teeth in inter-proximal contact
A faint line going from the ala of the nose to the corner of the mouth
A small projection in the middle of the upper lip
Oval depression of temporal bone in condyloid process


16. How can you tell if someone has cancer by looking at the tongue?
Maxillary first molar
Looking at the border of the tongue
Follows the inside of the ramus and the body of the mandible
Outside surface Which is towards the cheek - on posterior teeth


17. Mucogingival Junction
What divides the tongue in half and runs from the base to the tip of the tongue
A line of demarcation between the attached gingiva and alveolar mucosa
Inside surface Which is towards the tongue - on anterior teeth
Second teeth next to central incisors


18. Labial
Outside surface Which is towards the lips
Opening in the mouth below the orbit on the maxillary bone
Layers of tooth tissue become calcified
Short tubules that seem to crossover to the enamel


19. What are the two ways the TMJs move?
A rounded area beyond the last posterior maxillary tooth
Hinge motion and gliding movement
Corners of the mouth
Small dark brushes


20. Cusps
A projection that extends off the back of the soft palate
Calcium salts are deposited into formed tooth
Platysma - trapezius - sternocleidomastoid
Pointed or rounded mounds on the crown of the tooth


21. How many cusps/ roots do the maxillary first molars have?
A junction or center of veins that directly or indirectly drain a vast area
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Act to maintain the gingival integrity of the marginal gingiva
4/5 cusps/ 3 roots


22. What is the maxillary cuspid known as?
Drains the floor of the mouth
The cornerstone of the mouth
Place where the groove comes together or fissures cross
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator


23. Function of Palatopharyngeal
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
A rounded area beyond the last posterior maxillary tooth
Constricts the nasopharyngeal passage and elevates the larynx
Three cusps/ trifurcated


24. Mandibular Artery
An extension of an unattached gingiva and the tooth
Forms the bulk of the tooth
Located behind the ramus of the mandible and branches into five arteries
Middle two teeth in the mouth


25. What are the intrinsical muscles of the tongue responsible for?
Shaping the tongue during speech - mastication and swallowing
Opening in the mouth below the orbit on the maxillary bone
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Platysma - trapezius - sternocleidomastoid


26. Lingual Frenum
Acts as anchors between the alveolar bone and the tooth
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
A line of tissue that extends from the tongue to the floor of the mouth
Radiates from the developmental groove


27. Alveologingival Fiber Groups
Extends from the medial corner of the eye to the nasal cavity
Aid in attaching the gingiva to the alveolar bone
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Substances between cells


28. Enamel Tufts
Small dark brushes
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
A faint line going from the ala of the nose to the corner of the mouth
Palatoglossus - palatopharyngeal


29. Foliate Papillae
Excess bone in the middle of the palate
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Raised vertical folds of tissue on the lateral border of the tongue
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine


30. Peg lateral
Three bulges on the incisal edge
Peg shaped crown with a smooth surface
Supportive fibers that anchor the tooth to the bone
Two cortical bone plates that come together between each tooth


31. Contour Lines of Owen
Mandibular central incisors
The space between the unattached gingiva and the tooth
Demonstrates a disturbance in the body metabolism
Allow flexibility during mastication - speech


32. Gums
Tissue covering the alveolar processes
Where the proximal sides of two teeth come together and touch
Two cortical bone plates that come together between each tooth
Disk that acts like a cushion between the temporal bone and the condyloid process


33. Meniscus
Incremental line indicating trauma of birth
Disk that acts like a cushion between the temporal bone and the condyloid process
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Composed of mucosa and surrounds the necks of the teeth


34. What is origin and What is insertion?
Where the ectoderm layer matures into the enamel
Origin - fixed point - insertion - movable point
Digstric - Mylohyoid - stylohyoid - geniohyoid
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue


35. Mesial
Inside of the maxillary teeth
Surface towards the midline
Wings of the sphenoid bone
Forms the bulk of the tooth


36. What are the eight landmarks of the face?
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Follows the inside of the ramus and the body of the mandible
Outside surface Which is towards the lips
Full deep rich sound in nasal cavity


37. What kind of root does the maxillary first molar have?
Drains the maxiallary artery and superficial temporal arteries
A condition where the lower frenum attachment is very short/DDS/frenectomy
Triferacated
Second teeth next to central incisors


38. Pterygoid Process
Act to maintain the gingival integrity of the marginal gingiva
The deepest point of the vestibule
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Wings of the sphenoid bone


39. Cingulum
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Growth from the oral epithelium that gives rise to the tooth buds
Convex area on the lingual surface near gingiva


40. Facial Artery
Cells that form dentin
Contains six branches that supply blood to the pharynx muscles - soft palate tonsils - the posterior of the tongue - sub mandibular gland - muscles of the face - nasal septom - nose and the eyelids
Molars
Fifth cusp located on the mesial surface lingual surface of maxillary first molars


41. Morpho Differentiation
Draws down the mandible and corners of the mouth
Forming organ takes shape and resembles the shape of a bell
Week 12
The inner surface of the lips


42. How many cusps/ roots do the 2/3rd maxillary molars have?
10 days
Three cusps/ trifurcated
Stained growth rings in dentin
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip


43. Quadrants
To lubricate the oral cavity and to moisten food
Assist in depressing the mandible and elevating the tongue
Disk that acts like a cushion between the temporal bone and the condyloid process
Quarters of the teeth


44. What are the 3 branches of the mandibular nerve branch?
Assist in the movement and functioning of the tongue
Function to resist rotational forces and tilting
Circle and tighten the gingival margin around the neck of the tooth
Buccal - lingual - and inferior alveolar


45. If Palate not fused
Small curved lines that run parellel to the CEJ
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Teeth will not erupt in proper position
The deepest point of the vestibule


46. Articular Disc
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
The cornerstone of the mouth
Secrete saliva to assist in process of digestion
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors


47. Mandible Arch
Cells that form cementum
Lower arch of the teeth
Excess dryness of the mouth
To bulge of curve outward


48. Torus
Digstric - Mylohyoid - stylohyoid - geniohyoid
Excess bone in the middle of the palate
Occlusal surface of the posterior tooth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles


49. What are the four main functions of deciduous teeth?
Mastication - aids in speech - influence facial structure - chewing surfaces
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Radiates from the developmental groove
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar


50. Mental Nerve Branch
Forms into dentin - cementum and pulp of the teeth
Resists forces that try to pull the tooth outward
Triferacated
Largest division of the trigeminal nerve