Huber 1 Flashcards
Characterization of Exostoses
- Boney protuberances arising from the cortical plate.
- Etiology: genetic, environmental
- Asymptomatic – bony hard
- Irritation (e.g. trauma, mucosal disease) may lead to initial awareness by patient
Categories of Exostoses
Further categorized by location:
- Buccal exostoses
- Palatal exostoses
- Torus palatinus
- Torus mandibularis
Features of Buccal/Palatal Exostoses
- Incidence: widely variable; 0.1% - 69%
- Usually bilateral
- Gender: male > female
- Treatment generally not indicated: Prosthodontic considerations, Chronic trauma
Features of Torus Palatinus (incidence, gender, race, age)
- Exostosis on midline of hard palate
- Incidence: common; 20-35% of population
- Gender: female > male (2:1)
- Ethnic variation: Asian, Inuit
- Age: peak prevalence in young adults
Features of Torus Palatinus
radiograph, histology, treatment
- Dynamic lesions; responsive to functional stress
- Radiograph: radiopaque mass
- Histology: dense viable lamellar cortical bone
- Treatment: none required unless it interferes with a prosthesis
First awareness of Torus Palatinus by patient by _______.
Trauma or mucosal disease
Features of Torus Mandibularis
incicence, etiology, gender, race
- Exotosis on lingual mandibular cortex
- Incidence: common; 7-10% of population
- Etiology: genetic, environmental
- Bilateral: 90%
- Gender: male > female
- Ethnic variation: Asians, Inuits
Features of Torus Mandibularis
age, radiograph, histology, treatment, prognosis
- Age: peak prevalence in young adults
- Dynamic lesions; responsive to functional stress
- Radiograph: radiopaque mass
- Histology: dense lamellar cortical bone
- Treatment: none required unless it interferes with a prosthesis
- Prognosis: good, benign condition
Characteristics of Stafne Defect
description, radiograph, incidence, gener age
- Focal lingual mandibular bone concavity
- Pseudocystic radiolucent lesion
- Incidence: uncommon (0.3% of population)
- Gender: male > female
- Age: adults
Features of Stafne Defect
symptoms, location
- Asymptomatic
- Stable (static bone cyst)
- Unilateral
- Mandibular angle
- Below mandibular canal
- Variant: anterior salivary gland depression
Radiographic findings and diagnosis of Stafne Defect
• Radiographic findings: o Unilocular radiolucency o Well circumscribed o Corticated borders • Diagnosis: established by radiologic presentation.
Histology and Treatment of Stafne Defect
• Histology:
o Rarely indicated
Salivary gland parenchyma; usually submandibular gland
Soft tissue elements
• Treatment: none required
• Prognosis: good
Characteristics of Nasolabial Cyst
where, derived, when, who
- Arises in the upper lip lateral to the midline
- Derived from epithelium of the nasolacrimal duct
- 4th-5th decades
- Females > males
- 10% occur bilaterally
Histology and Treatment of Nasolabial Cyst
• Histopathologic features
o Lined by pseudostratified columnar epithelium with goblet cells and cilia
o Cuboidal epithelium and squamous metaplasia may be seen
• Treatment
o Surgical excision
o Recurrence is rare
Characterizations of Nasopalatine Duct Cyst (Incisive Canal Cyst)
(when, who, symptoms)
- Most common non-odontogenic cyst; occurs in 1% of the population
- Arises from cystic degeneration of remnants of the nasopalatine duct
- 4th-6th decades
- Males > females
- Common presenting symptoms: swelling of the anterior palate, drainage, pain
- Some cases are asymptomatic and discovered on routine radiographs