ODONTOGENIC CYST Flashcards
Most common cyst of the jaw
Most common odontogenic cyst
Periapical Cyst ( Radicular, Apical Periodontal)
Clinical features of Periapical cyst (Radicular, Apical Periodontal)
📌Mx. Anterior - Mx. Posterior- Mand. Posterior- Mand. Anterior
📌Nonvital tooth
Radiograph of Periapical Cyst (Radicular/ Apical Periodontal)
Rount to ovoid radiolucency
‼️‼️‼️BE‼️‼️‼️
Microscopic / Histopath of Periapical Cyst
- Nonkeratinized stratified squamous epithelium
- Source of epithelial lining: Rest of Malassez
- Rushton bodies / Hyaline Bodies
Tx. Periapical cyst/ Apical Periodontal/Radicular
Extraction
RCT
Apicoectomy
Cyst developed after tooth extraction & incomplete removal of a periapical cyst
Residual Cyst
QUESTIONS:
What is the remnant of HERS
Rest of Malassez
Remnant of dental lamina
Rest of serres
Between roots of mandibular premolar & canine
Vital teeth
Lateral periodontal cyst
Round & teardrop shaped radiolucency
Lateral Periodontal Cyst
Microscopic/ Histopath of Lateral Periodontal Cyst
Nonkeratinized stratified squamous epithelium
Source of epithelial lining: Rest of Serres
Tx. of Lateral Periodontal Cyst
Enucleation
2nd most common odontogenic cyst
Most common developmental cyst
Dentigerous Cyst (Follicular Cysf)
Clinical features of Dentigerous Cyst / Follicular Cyst
📌3rd molars & canine
📌attached to the CEJ
📌most common idndication is delayed eruption
📌may transform into Ameloblastoma
Radiographic of Dentigerous Cyst
RDL around the crown of the tooth
Microscopic / Histopath Dentigerous Cyst
📌Nonkeratinized Stratified Squamous Epithelium
📌Source of Epithelial lining: REE
📌Rushton bodies/ Hyaline Bodies
Tx. of Dentigerous Cyst
Enucleation
Soft tissue variant of Dentigerous cyst/ Follicular cyst
Eruption Cyst
Aggressive
High recurrence rate
Mandible (Molar-ramus area)
Odontogenic Keratocyst (Keratocystic Odontogenic Tumor)
DDX of Dentigerous cyst/ Follicular Cyst
AOT
Classificatim of Odontogenic Keratocyst (Keraotocystic Odontogenic Tumor)
Solitary
Multiple
1 only one
most common Classification of Odontogenic Keratocyst ( Keratocystic Odontogenic Tumor)
Solitary
Common children associated w/ syndrome
Multiple Odontogenic Keratocyst
Radiograph of Odontogenic Keratocyst
RDL
Microscopic / Histopath of Odontogenic Keratocyst / Keratocystic Odontogenic Tumor
📌Keratinized Stratified squamous epithelium (parakeratinized)
📌 Source of Epithelial lining: Rest of Serres
📌Palisading basal layer with no epitthelial ridges
📌Aspirate : cheese like substance
📌Multiple OKC 📌Basal Cell Carinoma 📌Palmar or Plantar Keratotic Pitting 📌Bifid ribs 📌Calcified falx cerebri
‼️‼️‼️BEQ‼️‼️
Nevoid Basal Cell Carcinoma Syndrome / Basal Cell Nevus / Gorlin Goltz /Bifid Rib
Tx. Nevoid Basal Cell Carcinoma
Enucleation w/ currettage
Marsupialization
Peripheral Ostectomy
Maxilla
RDL / amixed lucent opaque
Salt & Pepper pattern
**Microscopic/ Histopath : Ghost cell keratinizatin
Calcifying Odontogenic Cyst ( Calcifying Cystic Odontogenic Tumor)
Tx. COC
Enucleation
Marsupialization
