Week 2 Micro and Macro Flashcards
How wide is the PDL space?
.1 to .25 mm
What is the shape of the PDL space?
Hourglass widest at Apex and cervix
Narrowest in middle
Shape of papilla in anterior and posterior teeth?
Ant- pyramidal
Post- col
Where is the mucogingival junction?
Border of the alveolar mucosa and attached gingiva
Where is the MGJ widest and narrowest?
Facial- wide ant and narrow post
Mand Ling- narrow ant incisors and wide in molars
4 PDL functions?
- Physical and mechanical
- Formation of bone and cementum
- Nutritional- blood and lymph
- Sensory
Cementum purpose?
Covers root surface and gives sharpeys fibers a place to attach
Where is the cementum thickest and thinnest?
Thick at apex, thin at CEJ
Thickens as one ages
4 maxillary arteries?
Anterior superior alveolar aka ASA,
Posterior Superior Alveolar aka PSA,
Infraorbital, and the Greater Palantine Artery
Mandibular artery?
Inferior Alveolar Artery
How do the arteries branch off the alveolar arteries to the teeth?
First to the Dental then that breaks into 3
The intraseptal, PDL, and the Supraperiosteal
What teeth do the jugulodigastric lymph nodes serve?
3rd molars
What part of the mouth do the deep cervical lymph nodes serve?
The palatal gingiva
What teeth do the submental lymph nodes serve?
The lower incisors
Other that the palatal gingiva, wisdom teeth and lower incisors what lymph nodes function for the rest of the mouth?
Submandibular
What nerve innervates the mouth autonomically?
Superior cervical ganglion
What nerve is responsible for our senses of pain, pressure, hot and cold in our mouth?
The trigeminal V
How does the trigeminal branch?
Superior alveolar, lingual and inferior
Plus mental/buccal
Other nerves that innervate the mouth?
Palate- sphenopalatine branches to
the greater palantine and nasopalantine
3 types of gingival epithelium and where is it found in a general sense?
All is found in the free and attached gingiva
Oral epithelium
Sulcular epithelium
Junctional epithelium
Cells types in general gingival epithelium and where do they usually begin life?
Start in the basal cell layer (stratum basal)- all gingiva tissue has this layer
Keratinocytes, Langerhans cells, Merkel cells, melanocytes
4 layers of epithelium?
Top to bottom- Stratum Corneum Stratum granulosum Stratum Spinosum Stratum Basale
What do Keratinocytes do?
Produce tonofilaments, soft tissue renewal.
They change shape as they move up the layers becoming flatter till they reach the top for the particular epithelium type they are aka ortho-keratinized, para or NON….