CrackMDSNotesAnatomy

Oral Anatomy, Histology & Embryology Revision Notes

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1. Nerve Supply of Head & Neck

💡 Trigeminal (V) = main sensory. V1 = Ophthalmic. V2 = Maxillary. V3 = Mandibular (only motor + sensory). Lingual nerve = taste anterior 2/3 (via chorda tympani from VII). IAN block = V3.

2. Tooth Morphology

💡 Cusp of Carabelli = maxillary molars. Largest cusp = mesiopalatal (upper molar). Longest tooth = maxillary canine. Smallest tooth = mandibular central incisor. Most common supernumerary = mesiodens.

3. Amelogenesis & Dentinogenesis

💡 Ameloblasts = ectodermal. Odontoblasts = neural crest (ectomesenchyme). Enamel = most mineralized tissue (96% inorganic). Tomes process = ameloblast. Hunter-Schreger bands = enamel prism direction change.

4. TMJ Anatomy

💡 Disc = fibrocartilage (avascular, aneural in center). Upper joint space = translation. Lower = rotation. Lateral pterygoid = opens mouth + protrudes. Only muscle that opens = lateral pterygoid (inferior head) + digastric.

5. Salivary Gland Anatomy & Histology

💡 Parotid = largest, serous only, Stensen's duct. Submandibular = mixed (serous predominant), Wharton's duct. Sublingual = mixed (mucous predominant), Bartholin's duct. Myoepithelial cells present in all.