All Free Oral Pathology and Medicine MCQs with Answers

• A. Hydroxy glacine
• B. Hydroxproline
• C. Proline
• D. Glycine

Explanation: Hydroxyproline stabilises the collagen triple helix through hydrogen bonding and is therefore a major contributor to collagen strength.

• A. Increased mobility of the teeth
• B. Radiographic widening of the pdl
• C. All of the above
• D. Morning pain in muscles

Explanation: Excessive occlusal loading in bruxism can widen the periodontal ligament, increase tooth mobility and produce morning muscle pain from…

• A. Increased pressure within the cyst
• B. Immune mediated bone destruction
• C. None of the above
• D. Proliferation of epithelium

Explanation: A periapical cyst begins with inflammatory stimulation and proliferation of the epithelial rests of Malassez around an infected, non-vital…

• A. Acute osteomyelitis
• B. Garre's osteomyelitis
• C. Condensing osteitis
• D. Local alveolar osteitis

Explanation: Garre's osteomyelitis is a low-grade chronic odontogenic infection in children that stimulates new bone formation beneath the periosteum…

• A. Dental cyst
• B. Dentigerous cyst
• C. Radicular cyst
• D. Karato cyst

Explanation: A radicular cyst develops from epithelial rests of Malassez stimulated by inflammation at the apex of a non-vital tooth.

• A. Maxillary second molar
• B. Maxillary third molar
• C. Mandibular first molar
• D. Maxillary first molar

Explanation: Chronic focal sclerosing osteomyelitis most often affects the mandibular first molar region, commonly in association with a chronically…

• A. Periapical osteitis, abscess, cellulitis,
• B. Abscess, cellulitis, osteitis, Periapical
• C. cellulitis, Abscess, Periapical, osteitis
• D. Periapical osteitis, cellulitis, abscess

Explanation: Acute odontogenic infection typically progresses from periapical osteitis to spreading cellulitis and then to a localized abscess.

• A. Bilateral - submandibular sublingual & submental spaces
• B. Bilateral - submandibular & sublingual spaces
• C. Unilateral - submandibular sublingual & submental spaces
• D. Unilateral - submandibular & sublingual spaces

Explanation: Ludwig's angina is a bilateral cellulitis involving the submandibular, sublingual, and submental spaces, usually spreading across the…

• A. Maxilla
• B. mandible
• C. palatine bone
• D. zygoma

Explanation: The mandible is more prone to osteomyelitis because it has a relatively poorer blood supply and dense cortical bone, which limits delivery…

• A. Cherubism
• B. Histiocytosis X
• C. Garre's osteomyelitis
• D. Tuberculous osteomyelitis

Explanation: Garre's osteomyelitis, also called proliferative periostitis, is a chronic low-grade infection of the jaw in children and young people.

• A. Hyaluronidase
• B. Coagulase
• C. Peroxidase
• D. Bradykinin

Explanation: Hyaluronidase breaks down hyaluronic acid in connective tissue, reducing tissue cohesion and allowing infection to spread diffusely…

• A. Radiographically
• B. Histologically
• C. Clinically
• D. None of the above

Explanation: A periapical cyst and granuloma may look similar clinically and radiographically, but histology distinguishes them: the cyst has an…

• A. Vacular strangulation
• B. Reduced host resistance
• C. Invasion of microorganisms
• D. An increase in microbial virulence

Explanation: Irreversible pulpitis generally develops when microorganisms penetrate deeper into the pulp and sustain inflammation that the pulp cannot…

• A. Continuous
• B. Sharp- shock like
• C. Lasting for short time
• D. Spontaneous

Explanation: Acute irreversible pulpitis typically causes spontaneous pain because the inflamed pulp is painful even without an external stimulus.

• A. Acute Pulpal degeneration
• B. Acute periodontal abscess
• C. Chronic pulpitis
• D. Cellulitis

Explanation: Throbbing nocturnal pain is characteristic of severe acute pulpal inflammation, often described in older questions as acute pulpal…

• A. Cementoma
• B. Chronic apical periodontitis
• C. Condensing Osteitis
• D. Acute apical periodontitis

Explanation: Condensing osteitis is a localized periapical bone reaction to low-grade pulpal inflammation, commonly beneath a deeply carious tooth, and…

• A. Gonococcus
• B. Enterococcus
• C. Streptococcus
• D. Staphylococcus

Explanation: Staphylococcus, especially Staphylococcus aureus, is the classic most frequent cause of acute osteomyelitis.

• A. Periapical granuloma
• B. Periodontal abscess
• C. Periapical abscess
• D. All of the above

Explanation: A periapical cyst generally develops from a pre-existing periapical granuloma arising at the apex of a non-vital tooth.

• A. Necrotizing
• B. proliferation of a chronically inflamed pulp
• C. Suppurative lesion
• D. Also called as phoenix abscess

Explanation: Chronic hyperplastic pulpitis, or pulp polyp, is an exuberant proliferation of chronically inflamed pulp tissue through a large carious…

• A. Acute partial pulpits
• B. Acute total pulpits
• C. Suppurative pulpitis
• D. Strangulation of pulp

Explanation: Pus filling the pulp chamber with only small remnants of tissue at the apex indicates suppurative pulpitis, in which infection and…