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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

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Answer 50 questions in 15 minutes.
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1. What are the 3 branches of the mandibular nerve branch?
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Outside surface Which is towards the cheek - on posterior teeth
4/5 cusps/ 3 roots
Buccal - lingual - and inferior alveolar

2. Xerostomia
Excess dryness of the mouth
Incremental line indicating trauma of birth
The mandibular first premolar
Folds of tissue that extend horizontally from the uvula to the base of the tongue

3. What teeth do the deciduous (baby) tooth not include?
Synovial fluid
Creates the wall of the dentinal tubule
Located on the inside of the body of the ramus
No bicuspids/ no 3rd molars

4. Duct
A rounded area beyond the last posterior maxillary tooth
Canal or passage for fluid
Formed by the fibroblast cells and secures the tooth in the socket
The development of different tissues

5. What are the eight landmarks of the face?
Looking at the border of the tongue
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
The portion of the tooth that meets the gingiva
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

6. Incisal third
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Papillae that give the tongue the strawberry effect
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Second teeth next to central incisors

7. Tubercle of the Lip
Vertical groove on the midline of the upper lip
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Supplies blood to the brain and the eyes
A small projection in the middle of the upper lip

8. Uvula
Duct located on the parotid papilla
Drains the floor of the mouth
Draws the hyoid bone superiorly and posteriorly and stabilizes it
A projection that extends off the back of the soft palate

9. Sublingual Caruncles
Digstric - Mylohyoid - stylohyoid - geniohyoid
A dense tissue covered with mucous membrane that can withstand chewing
2 small raised folds of tissue where the lingual frenum attaches
The first predentin that is formed and matures within the tube

10. Central Incisor
Opening for the ear
Supportive fibers that anchor the tooth to the bone
Middle two teeth in the mouth
The ridges that run horizontally across the hard palate behind the incisive papilla

11. Vestibule
A pocket formed by the soft tissue of cheeks and gingiva
Cells that form dentin
Located on the inside of the body of the ramus
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

12. Ala of the Nose
Calcium salts are deposited into formed tooth
The outer edge of the nostril
Convex area on the lingual surface near gingiva
Respiratory system - digestive system and glandular organs

13. Exfoliated
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Permeante teeth replace the primary teeth
Shed from the oral cavity
Short tubules that seem to crossover to the enamel

14. When does the maxillary first molar erupt?
6 years old
Resulting from an imperfect union where the lobes come together
Follows the length of the body of the mandible past the last tooth and up to the ramus
Short tubules that seem to crossover to the enamel

15. Stippled
Genioglossus - hyoglossus - styloglossus - palatoglossus
Full deep rich sound in nasal cavity
Healthy gingival tissue with an orange texture
Buccal - lingual - and inferior alveolar

16. Anatomical root
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Portion covered with cementum
Resists forces that try to pull the tooth outward
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

17. How is the TMJ supported and what controls their movement?
Ligaments and muscles of mastication
Causes a thickening of the cementum around the apex
Full deep rich sound in nasal cavity
Inner portion of the enamel rod

18. Alveolar Mucosa
Mucosa that covers the alveolar bone
The space between the unattached gingiva and the tooth
The development of different forms
Creates the wall of the dentinal tubule

19. How many roots/ cusps does the mandibular first molar have?
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Bifurcated/ 5 cusps
When cells rapidly increase in number
A line that represents the alveolus bone lining the socket

20. Histo Differentation
The development of different tissues
Lift the hyoid bone and assist in opening the mouth
Duct located on the parotid papilla
Three bulges on the incisal edge

21. What is the largest cranial nerve and the most important to dental auxillaries and why?
Clear fluid secreted by the salivary and mucous glands throughout the mouth
6 years old
When the tissue becomes inflamed
Trigeminal nerve--because it ennervates the maxilla and the mandible

22. Lingual Frenum
2 to 3 pints
A line of tissue that extends from the tongue to the floor of the mouth
The mandibular molars
Lift the hyoid bone and assist in opening the mouth

23. Interdental Gingiva
Bicuspids
Small yellowish glands on the labial mucosa
An extension of an unattached gingiva and the tooth
Largest division of the trigeminal nerve

24. Labial Mucosa
The inner surface of the lips
Cells From which connective tissue evolve
Smaller branch that ennervates the soft palate uvula and tonsils
Small head - low nasal bridge - thin upper lip - small mandible

25. Maxillary Artery
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Creates the wall of the dentinal tubule
Largest of the branches of the external carotid artery; supplies facial structure
Triangular space in the gingival direction when two adjacent teeth are in contact

26. Dental Arteries
Band of fibrous tissue which attaches bone to bone
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
4/5 cusps/ 3 roots

27. Sublingual Sulcus
Raised vertical folds of tissue on the lateral border of the tongue
A horseshoe shaped groove that follow the curve of the dental arch
4 cusps/ bifurcated
The cornerstone of the mouth

28. Posterior Teeth
When the dentin is exposed
The teeth located at the back of the mouth
Biting edge of the teeth
Shed from the oral cavity

29. Nasal-Labial Groove
A faint line going from the ala of the nose to the corner of the mouth
Enamel is thinner - pulp chamber is smaller -
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Layers of tooth tissue become calcified

30. Pterygoid plexus of the veins
Quarters of the teeth
Interdental ligament
Separates the developing oral cavities from the nasal cavities
A junction or center of veins that directly or indirectly drain a vast area

31. Oblique Fiber Group
Drains the facial structures beginning near the eye and descending toward the mandible
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Resists intrusive forces that try to push the tooth inwards
Small linear depression

32. Interdental Ligament Group
Shaping the tongue during speech - mastication and swallowing
Rounded depression on a tooth
Formed by the uniting of lobes during development of crown
Resist rotational forces and hold teeth in inter-proximal contact

33. Tome's process
The connective tissue of the marginal gingiva
No bicuspids/ no 3rd molars
Responsible for laying down the enamel matrix into place
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

34. Perikymata
Synovial fluid
A line that represents the alveolus bone lining the socket
Canal or passage for fluid
Small grooves noted on some teeth

35. What are the 12 landmarks of the oral cavity?

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36. Morphology
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Study of the structure and form of the teeth
Located behind the ramus of the mandible and branches into five arteries
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

37. Pterygoid Process
Study of prenatal growth and the developing process of an individual
Wings of the sphenoid bone
Second teeth next to central incisors
Small curved lines that run parellel to the CEJ

38. Linea Alba
A line of tissue that extends from the tongue to the floor of the mouth
Duct located on the parotid papilla
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Tooth emerges from gum tissue and becomes visible

39. How much saliva is produced daily?
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Assist in the movement and functioning of the tongue
1500 millimeters
Band of fibrous tissue which attaches muscle to bone

40. Muscle origine
Week 11
The fixed attachment of a muscle
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Substances between cells

41. What are the four main functions of deciduous teeth?
Inside of the maxillary teeth
Three cusps/ trifurcated
Mastication - aids in speech - influence facial structure - chewing surfaces
Drains the maxiallary artery and superficial temporal arteries

42. Anomalies
Biting edge of the teeth
The mandibular first premolar
Forms into dentin - cementum and pulp of the teeth
Extreme variations from the norm

43. Caruncle
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
No bicuspids/ no 3rd molars
Fleshy elevation under the tongue

44. Mental Artery
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Two
Portion covered with cementum
Drains the floor of the mouth

45. Gingival Groove
Pulverizing or chewing surface
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Incremental lines around the layers of the enamel matrix
The line of demarcation between the attached gingiva and the marginal gingiva

46. Articular Disc
32
Oval structures that are located on the dorsal surface of the tongue
Two vertical extensions of the mandible
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

47. Torus Mandibularis
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Excess bone formations under the tongue on the alvellar bone
Papillae that give the tongue the strawberry effect
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

48. Mental Nerve Branch
Greater - lesser - naso palatine nerves
Middle two teeth in the mouth
Two cortical bone plates that come together between each tooth
Largest division of the trigeminal nerve

49. Cleft Uvula
A faint line going from the ala of the nose to the corner of the mouth
The slightly raised line extending down the middle of the hard palate
A projection that extends off the back of the soft palate
Mildest form of cleft palate

50. Eruption
The largest of the salivary glands which lie just below and in front of the ear
Aid in attaching the gingiva to the alveolar bone
The study of the microscopic structure and functions of tissues
Tooth emerges from gum tissue and becomes visible

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Dental Assisting: Head And Neck Anatomy

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