Orofacial Flashcards
Muccobuccal fold
Point where lips/cheeks turns to go toward gingival tissue
Alveolar mucosa
Mucosa lying against alveolar bone
Loosely attached and moveable
Mucogingival junction
Point where gingiva becomes tightly attached to the bone
Lateral borders
The teeth and mucosa confines the lateral borders of the oral cavity proper
Palatoglossal arch
The anterior pillar
Palatopharyngeal arch
Posterior pillar
Retromolar pad
Small elevation of tissue posterior to mand molars
Fauces
Spaces between left and right tonsils
Sublingual caruncles
Small elevations in each side of the base of the lingual frenum
2 divisions of oral cavity
Vestibule
Oral cavity proper
Oral cavity proper includes
Floor of the mouth
Soft/hard palate
3 categories of oral mucosa
Masticatory mucosa
Lining mucosa
Specialized mucosa
Specialized mucosa is found
Dorsum of the tongue
Masticatory mucosa is found?
Undergoes what?
Gingiva and hard palate
Undergoes trauma (keratinized)
4 areas of lining mucosa
Labial/buccal mucosa
Alveolar mucosa
Soft palate
Central surface of the tongue/floor of the mouth
Characteristics of lining mucosa
Loose
Flexible
Non keratinized
Fovea palatine
2 small depressions on either side of the midline
Beginning stages of the tongue development in utero happens
4.5weeks
Tongue is covered with what type of epithelium
Stratified squamous epithelium
4 types of papilla
Filiform
Fungiform
Foliate
Circumvallete
Circumvallete papilla
V shaped row circular raised elevations
Glands of Von ebner
Fungiform papillae
Tiny red raised spots
Sense of taste
Filiform papillae
No tastebuds- tactile sensation
Foliate papillae
side of tongue
Where oral cancer begins
Lingual tonsils
Located at base of tongue behind circumvallete papillae
Purpose of lymphoid tissue in lingual tonsils
Provides defence mechanism for infection
3 glands
Parotid
Sublingual
Submandibular
Parotid gland associated duct
Stensons duct
T/F parotid gland is the largest gland but only accounts for 25% of salivary volume
True
Submandibular gland accounts for what % of salivary volume
60-65%
Sublingual duct accounts for what % of salivary volume
10%
Clinical crown describes
The part of the crown visible above the gingiva
Anatomical crown
Portion of crown that is covered by enamel
4 tooth tissues
Pulp
Cementum
Enamel
Dentin
Secondary dentin forms after
Eruption
Reparative dentin or tertiary dentin is laid down in response to
Trauma or caries
Cementum’s main function
Provide a medium for attachment of the tooth to the alveolar bone
2 types of cementum
Cellular
Acellular
Acellular cementum contains
Sharpeys fibers
Odontoblasts are
Dentin forming cells
Incisors are intended to
Cut
Canines are intended to
Hold and grasp
Premolars are intended to
Hold and grind
Molars are intended to
Grind/chew
Tooth grows and develops from growth centres called
Lobes
Tubercles are
Small elevations of enamel on crown