• Pulp Polyp (Chronic Hyperplastic Pulpitis):

  • Source of epithelium: Implantation of desquamated cells from saliva or by implantation from oral mucosa due to continuous rubbing.

  • Most common teeth: Deciduous molars and permanent first molars.

• Periapical Granuloma: Always associated with a non-vital tooth.

• Garre's Osteomyelitis: Another name for Chronic Osteomyelitis with Proliferative Periostitis.

• Chemotherapy Acute Changes: The two common acute changes are hemorrhage and mucositis.

• Radiosensitivity of Glands: Serous type of glands exhibit more radiosensitivity compared to mucous and mixed glands.

• Bacteria adhere to acquired pellicle
• Coaggregation enables biofilm complexity
• Sucrose → lactic acid → pH drops → Hydroxyapatite dissolves

Key Enzymes Recap:

• Invertase → splits sucrose
• GTF → forms sticky glucans for adhesion
• FTF → synthesizes fructans for biofilm scaffolding

1. Zone 1 – Normal Dentin:
   Healthy tissue; no treatment needed

2. Zone 2 – Subtransparent Dentin:
   Acid-demineralized, no bacteria, remineralizable; preserve

3. Zone 3 – Transparent Dentin:
   Softened, no bacterial invasion; remineralizable; preserve

4. Zone 4 – Turbid Dentin:
   Bacterial invasion; not remineralizable; must be removed

5. Zone 5 – Infected Dentin:
   Fully decomposed; heavily infected; must be removed

Trotter’s Syndrome

• Key Features: Pharyngeal pain due to nasopharyngeal carcinoma
• Associated Structures: CN V, CN IX, CN X

 Post-Herpetic Neuralgia

• Key Features: Persistent pain after Herpes Zoster, often affecting the ophthalmic division
• Associated Structures: CN V1

 Ramsay Hunt Syndrome (Herpes Zoster Oticus)

• Key Features: Facial paralysis, ear pain, vesicles, hoarseness, vertigo
• Associated Structures: Geniculate ganglion, CN VII

 Reader’s Syndrome (Para-Trigeminal Syndrome)

• Key Features: Trigeminal pain with ocular sympathetic paralysis
• Associated Structures: CN V + sympathetic fibers

 Sphenopalatine Neuralgia (Sluder’s / Horton’s / Lower Half Headache)

• Key Features: Unilateral pain in eye, maxilla, ear, mastoid, zygoma; no trigger zone; may occur at same time daily
• Associated Structures: Vidian nerve, cavernous sinus

Horner’s Syndrome

• Key Features: Triad of miosis, ptosis, anhidrosis; facial vasodilation
• Associated Structures: Sympathetic chain lesion

 Frey’s Syndrome (Auriculotemporal Syndrome)

• Key Features: Gustatory sweating during eating; flushing in temporal region
• Associated Structures: Auriculotemporal nerve (CN V3)

 Glossopharyngeal Neuralgia

• Key Features: Sharp pain in ear, pharynx, tonsil, posterior tongue; trigger zone in tonsillar fossa
• Associated Structures: CN IX

Occipital Neuralgia

• Key Features: Unilateral pain in neck and occipital region; tender spot below superior nuchal line
• Associated Structures: Cervical plexus sensory branches

 Eagle’s Syndrome (Stylohyoid Syndrome)

• Key Features: Deep dull pain in oropharynx, posterior auricular region, dysphagia, limited neck motion
• Associated Structures: Elongated styloid process or calcified stylohyoid ligament

Macroglossia

• Feature: Crenated (scalloped) lateral tongue borders

Lymphangioma of Tongue

• Appearance: Tapioca pudding/Frog's egg

Geographic Tongue

• Associated With: Fissured tongue
• Histopathology: Similar to psoriasis
• Key Feature: Munro's abscesses

Median Rhomboid Glossitis

• Unique Sign: "Kissing lesion" on soft palate due to tongue contact

Hairy Tongue

• Misnomer: Elongated filiform papillae—not actual hair