Podcast
Questions and Answers
What is the primary origin of a dentigerous cyst?
What is the primary origin of a dentigerous cyst?
- Odontogenic epithelium
- Impacted third molars only
- Chronic inflammation
- Dental follicle degeneration (correct)
Which percentage of pleomorphic adenomas are benign tumors of the parotid gland?
Which percentage of pleomorphic adenomas are benign tumors of the parotid gland?
- 60% (correct)
- 10%
- 75%
- 30%
What percentage of pleomorphic adenomas can exhibit malignant transformation after more than 15 years?
What percentage of pleomorphic adenomas can exhibit malignant transformation after more than 15 years?
- 50%
- 25%
- 30%
- 10% (correct)
What is the classification of odontomas?
What is the classification of odontomas?
Which of the following conditions is NOT a risk factor for odontogenic tumors?
Which of the following conditions is NOT a risk factor for odontogenic tumors?
What is the primary causative factor for caries in the oral cavity?
What is the primary causative factor for caries in the oral cavity?
What characterizes gingivitis in the oral cavity?
What characterizes gingivitis in the oral cavity?
What is a distinguishing feature of pyogenic granulomas compared to other lesions?
What is a distinguishing feature of pyogenic granulomas compared to other lesions?
What is the recommended treatment for peripheral ossifying fibromas?
What is the recommended treatment for peripheral ossifying fibromas?
Which deficiency is associated with the 'beefy-red' appearance of the tongue in glossitis?
Which deficiency is associated with the 'beefy-red' appearance of the tongue in glossitis?
Which type of lesions are commonly involved in inflammation of tooth-supporting structures?
Which type of lesions are commonly involved in inflammation of tooth-supporting structures?
What is the primary characteristic of an irritation fibroma?
What is the primary characteristic of an irritation fibroma?
What are the symptoms commonly associated with aphthous ulcers?
What are the symptoms commonly associated with aphthous ulcers?
Which mechanism primarily contributes to the normal resistance of oral mucosa to infections?
Which mechanism primarily contributes to the normal resistance of oral mucosa to infections?
What is a common manifestation of primary herpes simplex virus infections?
What is a common manifestation of primary herpes simplex virus infections?
Which histological feature is NOT typically associated with herpes simplex virus infections?
Which histological feature is NOT typically associated with herpes simplex virus infections?
What is the primary reason that vesicles from herpes simplex virus heal spontaneously within a few weeks?
What is the primary reason that vesicles from herpes simplex virus heal spontaneously within a few weeks?
Which condition is NOT commonly associated with the development of oral candidiasis?
Which condition is NOT commonly associated with the development of oral candidiasis?
Leukoplakia is characterized by which of the following features?
Leukoplakia is characterized by which of the following features?
Which of the following statements about erythroplakia is correct?
Which of the following statements about erythroplakia is correct?
Which factors are most commonly associated with the development of squamous cell carcinoma in the oropharynx?
Which factors are most commonly associated with the development of squamous cell carcinoma in the oropharynx?
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Study Notes
Oral Cavity Pathology
- Caries is the most common cause of tooth loss before age 35.
- Gingivitis is inflammation of the gum tissue, often caused by poor oral hygiene and plaque buildup.
- Periodontitis is an inflammatory condition affecting tooth-supporting structures like ligaments, bone, and cementum.
Fibrous Proliferative Lesions
- Irritation fibromas are common benign bumps on the bite line, composed of fibrous tissue.
- Pyogenic granulomas are rapidly growing, vascular lesions.
- Peripheral ossifying fibromas can originate from pyogenic granulomas and often require surgical excision.
- Peripheral giant cell granulomas are composed of multinucleated giant cells and fibroangiomatous stroma.
Apthous Ulcers
- Apthous ulcers are common painful lesions, shallow and hyperemic, often caused by inflammation.
Glossitis
- Glossitis is inflammation of the tongue and can be associated with deficiencies in certain vitamins, like B12.
Infections
- **Herpes Simplex Virus Infections ** can cause cold sores and gingivostomatitis (oral vesicles and ulcers).
- Tzanck test is used to identify multinucleated giant cells in vesicular fluid, which are characteristic of Herpes Simplex Virus infections.
- Oral Candidiasis (Thrush) is caused by Candida fungus and often manifests as gray-white membranes on the oral mucosa.
Tumors and Precancerous Lesions
- Leukoplakia is a white plaque on the oral mucosa, that cannot be easily scraped off.
- Erythroplakia is a red, velvety lesion, with a higher risk of malignant transformation than leukoplakia.
- Squamous Cell Carcinoma is the most common oral cavity cancer and is strongly associated with tobacco, alcohol, and HPV.
- Human Papillomavirus (HPV) is a risk factor for oropharyngeal cancers, particularly in HPV-positive tumors.
Odontogenic Cysts & Tumors
- Dentigerous cysts are commonly associated with impacted third molars, and arise near the crown of the tooth.
- Ameloblastoma is a true neoplasm of the odontogenic epithelium, typically cystic and locally invasive.
- Odontoma is the most common odontogenic tumor, likely a hamartoma with extensive enamel and dentin deposition.
Salivary Glands
- Pleomorphic Adenoma is the most common tumor of the parotid gland, characterized by mixed epithelial and mesenchymal differentiation.
Oral Manifestations of Systemic Disease
- Oral manifestations can be a sign of systemic disease, such as infections, vitamin deficiencies, or autoimmune disorders.
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