Manual Sidenotes Flashcards
(45 cards)
Describe the ventral surface of the tongue?
Smooth
Describe the dorsal surface of the tongue?
Rough and irregular
It comprises the hard and soft palate?
Secondary palate
Hard palate arises from the fusion of?
Inferior nasal septum and palatine process
Non union of the inferior nasal septum and palatine processes?
Uranoschisis
Non union of the rest of the palatine process?
Staphyloschisis
Embryonic origin of vestibular lamina?
Ectoderm
First sign of tooth development?
Dental lamina
First sign of enamel organ formation?
Tooth bud
Enamel organ is also known as?
Dental organ
Stage where enamel and dentin is deposited?
Apposition
Describe the striae of retzius in the incisal tips and cuspal areas?
Concentric
Decribe the striae of retzius in proximal areas?
Oblique
Significance of the bands of hunter schregger?
Prevents enamel cracking during chewing
Enamel lamellae serves as?
Avenues for dental caries
Enamel tufts causes?
Lateral spread of caries
Structure best seen in cross section?
Enamel tufts
Enamel spindles causes?
Hypersensitivity of DEJ
Organic part of the enamel?
Enamel matrix
Inorganic part of enamel left during decalcification?
Enamel cuticle
Dentinal tubule with 3 or more branches?
Greater branching of the dentinal tubules
Significance of terminal branches of dentinal tubules?
Causes hypersensitivity to the DEJ
Content of dead tracts?
None
What can cause dead tracts? (5)
- Attrition
- Abrasion
- Erosion
- Caries
- Odontoblastic crowding