All Free Oral Pathology and Medicine MCQs with Answers

• A. Due to excessive periosteal bone formation
• B. An extremely painful condition
• C. A common sequel following sequestrectomy
• D. Due to low grade chronic infection

Explanation: Focal sclerosing osteomyelitis is a localized bone response to a low-grade, persistent pulpal infection, usually near the apex of a…

• A. Cortical bone
• B. Periosteum
• C. periosteum and inner cortex
• D. Medullary bone

Explanation: Osteomyelitis begins in the medullary or cancellous bone, where infection spreads through marrow spaces before involving the cortex and…

• A. Solitary or multiple small radiolucent areas
• B. Blurring of trabecular outlines
• C. Increased granular radioopacity
• D. Formation of sequestrum appearing as radiopaque patches

Explanation: The earliest radiographic change is loss of definition or blurring of the normal trabecular pattern as inflammation spreads through the…

• A. Apical cyst
• B. Apical scar
• C. Condensing osteitis
• D. Chronic apical periodontitis

Explanation: Condensing osteitis is usually associated with pulpal inflammation or necrosis, but the pulp may remain vital, particularly when the…

• A. Periodontal pocket
• B. Occlusal interference
• C. Chronic gingivitis
• D. Necrotic pulp

Explanation: An acute apical abscess forms when bacteria and their products exit through the apex from a necrotic pulp, producing localized suppuration…

• A. Strept. pyogenes
• B. Strept. mutans
• C. Pneumococci
• D. klebsiella

Explanation: Odontogenic cellulitis is most commonly associated with beta-haemolytic Streptococcus pyogenes, which spreads rapidly through connective…

• A. Viruses
• B. Staphylococci
• C. Streptococci
• D. Rickettsiae

Explanation: Staphylococci are strongly pyogenic organisms and characteristically produce localized abscesses through tissue destruction and pus…

• A. Endosteal bone formation
• B. Resorption of medullary bone
• C. Periosteal bone formation
• D. Resorption of cortical bone

Explanation: Garre osteomyelitis is a chronic low-grade infection in young patients that stimulates the periosteum to lay down layers of new bone…

• A. Hyalinization
• B. Calcification
• C. Cyst formation
• D. Formation of dental granuloma

Explanation: Hyalinization is described as an early degenerative change in the pulp in response to irritation, before more advanced outcomes such as…

• A. Se*ually transmitted disease
• B. Type of cellulites
• C. Type of osteomyelitis
• D. Venereal disease

Explanation: A phlegmon is a diffuse, spreading suppurative inflammation of soft tissue, essentially a form of cellulitis without a well-defined…

• A. Decreased host resistance
• B. Increase in the virulence of organisms causes infection
• C. Increased host response
• D. Occurs in immunocompromised patients

Explanation: In the inflammatory setting, osteosclerosis reflects a strong host response that stimulates reactive bone deposition around the affected…

• A. None of the above
• B. Extraction Socket
• C. Due to irritation from calculus / over hanging restoration
• D. End of sinus tract

Explanation: A parulis, or gum boil, is the localized inflammatory swelling at the opening of a draining sinus tract from a dental abscess.

• A. Apical condensing osteitis
• B. Apical cyst
• C. Chronic apical periodontitis
• D. Stage one apical osteofibroses

Explanation: Apical condensing osteitis is a localized radiopaque response of bone to low-grade pulpal inflammation, often seen near the apex of a…