MCQs on Pulp and Periapical Pathology

# Most cases of pulpitis are caused by:
A. Injudicious cavity preparation
B. Excessive heat incident to dry polishing of restorations
C. Bacterial invasion from a carious lesion
D. Bacterial invasion from the blood stream

# Odontalgia that is occasionally typical in hypertensive patients is a result of:
A. Headache radiating to the teeth
B. Nervous tension and worry
C. Hyperemia of pulp resulting from increased blood pressure
D. Abnormal situation of the sympathetic nerve system



# Which of the following statement is false about focal reversible pulpitis?
A. Application of ice results in pain which does not subside with removal of the thermal stimuli
B. Responds to electric pulp testing at a lower level of current than contralateral teeth
C. Sensitivity to percussion absent
D. Dilation of pulpal vessels occur

# Reversible pulpitis changes to irreversible pulpitis primarily because of:
A. Vascular strangulation
B. Reduced host resistance
C. Invasion of microorganisms
D. An increase in microbial virulence

# Pain in irreversible pulpitis is:
A. Spontaneous
B. Sharp shock like
C. Lasting for short time
D. Continuous

# The earliest response of pulpitis is:
A. Cyst formation
B. Calcification
C. Hyalinization
D. Formation of dental granuloma

# A tooth with a 3 month history of pain, which was worse when hot liquid was in mouth. After extraction, the tooth was split open. The pulp chamber was completely filled with pus. A few remnants of pulp tissue were found in apical end. The condition is:
A. Acute partial pulpitis
B. Acute total pulpitis
C. Suppurative pulpitis
D. Strangulation of pulp

# Chronic hyperplastic pulpitis (pulp polyp) is essentially:
A. Necrotizing lesion
B. Suppurative lesion
C. Proliferation of inflamed pulp tissue
D. Very sensitive, painful lesion

# The presence of pulp stones on the radiograph of a tooth indicates the presence of :
A. Acute pulpitis
B. Acute pulpalgia
C. Chronic periodontitis
D. None of the above

# Which of the following, if left untreated, is most likely to result in a periapical lesion?
A. Internal resorption
B. Focal reversible pulpitis
C. Acute suppurative pulpitis
D. Chronic hyperplastic pulpitis

# Abscess formation is particularly characteristic of infections with which of the following microorganisms?
A. Viruses
B. Rickettsiae
C. Streptococci
D. Staphylococci

# Which of the following does not commonly survive in a periapical lesion?
A. Pseudomonas
B. Streptococcus
C. Porphyromonas
D. Actinomyces

# Organism involved in cellulitis is:
A. Streptococcus mutans
B. Streptococcus pyogens
C. Pneumococci
D. Klebsiella

# Most common cause of cellulitis of face is:
A. Trauma
B. Abscess
C. Pericoronitis
D. Bacterial infection

# Phlegmon is a:
A. Sexually transmitted disease
B. Type of cellulitis
C. Type of osteomyelitis
D. Veneral disease

# The main causative agent of Ludwig's angina is:
A. Anaerobic streptococci
B. Aerobic streptococci
C. Staphylococci
D. Legionella infection

# Parulis is an inflammatory enlargement seen in:
A. End of sinus tract
B. Extraction socket
C. Due to irritation from calculus or overhanging restoration
D. None of these

# Periapical granuloma is:
A. Anaerobic infection
B. Aerobic infection
C. Mixed infection
D. Sterile

# Best way to differentiate a periapical cyst and a periapical granuloma is:
A. Clinically related signs ans symptoms
B. Histologically
C. Radiologically
D. Involvement of particular teeth

# The term 'pulse granuloma' suggests reaction towards the fragments of foreign material like:
A. Cotton fibers
B. Black silk
C. Silver amalgam
D. Legumes

# Which of the following is not characterized by granulomatous chronic inflammation?
A. Sarcoidosis
B. Tuberculosis
C. Histoplasmosis
D. Periapical granuloma

# On histological examination of a periapical area of a tooth and its canal in the region of radiolucency following would be seen:
A. Normal alveolar process
B. Osteoclastic resorption
C. Necrotic pulp
D. Chronic gingivitis

# An acute apical abscess is usually a result of:
A. Periodontal pocket
B. Occlusal interference
C. Necrotic pulp
D. Chronic gingivitis

# An apical lesion that develops as an acute exacerbation of a chronic or suppurative apical periodontitis is called:
A. Condensing osteitis
B. Chronic apical abscess
C. Apical cyst
D. Phoenix abscess

# Periapical cyst is usually preceded by :
A. Periapical granuloma
B. Periodontal abscess
C. Periapical abscess
D. All of the above

# True periapical cyst :
A. Cyst with epithelial lining not continuous with root apex
B. Cyst with epithelial lining continuous with root apex
C. Cyst without epithelial lining continuous with root apex
D. Cyst without epithelial lining not continuous with root apex

# Which of the following results in pathogenesis of periapical cyst?
A. Increased pressure within the granuloma
B. Immune mediated bone destruction
C. Proliferation of epithelium within the granuloma
D. Increased destruction by bacterial enzymes in the periapical abscess

# Which of the following is the most important in the pathogenesis of an apical periodontal cyst (apical cyst or radicular cyst)?
A. Necrosis of surrounding bone
B. Suppuration in cyt lumen
C. Proliferation of foamy macrophages
D. Increased osmotic pressure in the cyst lumen

# Parietal abscess is also known as:
A. Gingival abscess
B. Periodontal abscess
C. Periapical abscess
D. Periodontal cyst

# Odontogenic epithelium responsible for the formation of dental cyst is:
A. Cell rests of Serres
B. Enamel orrgan
C. Reduced enamel epithelium
D. Cell rests of Malassez

# Constant feature associated with radicular cyst is:
A. Impacted tooth
B. Missing tooth
C. Non vital tooth
D. Anomalous tooth

# Apical cysts having a direct connection with apical foramen have been termed as:
A. Residual
B. Bay
C. Paradental
D. Collateral

# Rushton bodies are seen in:
A. Calcifying odontogenic cyst
B. Gingival cyst of adults
C. Gingival cyst of newborn
D. Lateral periodontal cyst

# Osteomyelitis begins as inflammation of:
A. Cortical bone
B. Periosteum
C. Medullary bone
D. Periosteum and inner cortex

# The earliest radiographic sign of osteomyelitis is:
A. Solitary or multiple small radiolucent areas
B. Increased granular radioopacity
C. Blurring of trabecular outlines
D. Formation of sequestrum appearing as radioopaque patches

# Chronic osteomyelitis with proliferative periosteitis of the mandible (Garre's chronic suppurative sclerosing osteitis) is characterized clinically mainly by marked:
A. Endosteal bone formation
B. Periosteal bone formation
C. Resorption of cortical bone
D. Resorption of medullary bone

# Expansion of the jaw bones is seen in:
A. Garre's osteomyelitis
B. Chronic diffuse sclerosing osteomyelitis
C. Chronic local sclerosing osteomyelitis
D. Chronic suppurative osteomyelitis

# Focal sclerosing osteomyelitis is:
A. Due to excessive periosteal bone formation
B. An extremely painful condition
C. Due to low grade chronic infection
D. A common sequel following sequestrectomy

# Which of the following periapical conditions is often associated with a vital pulp?
A. Apical cyst
B. Apical scar
C. Condensing osteitis
D. Chronic apical periodontitis

# An symptomatic tooth has deep caries on occlusal surface. Radiograph shows radioopaque mass at apex of the tooth and the entire root outline is visible; this mass is most likely to be:
A. Cementoma
B. Condensing osteitis
C. Chronic apical periodontitis
D. Acute apical periodontitis

# Which of the following differentiates between condensing osteitis and benign cementoblastoma:
A. Condensing osteitis is associated with vital teeth where as cementoblastoma is associated with non vital teeth
B. In condensing osteitis radioopacity is attached to tooth whereas in cementoblastoma it is not
C. Cementoblastoma is common in maxillary first molar whereas condensing osteitis is associated with mandibular molars
D. In condensing osteitis, entire root line is visible whereas in cementoblastoma it is obliterated

# Dry socket is a form of:
A. Osteomyelitis
B. Osteitis
C. Osteoma
D. Periostitis

# Odontoclastoma refers to:
A. Malignant tumor of dental origin
B. Benign tumor of dental origin
C. External resorption
D. Internal resorption