Tutorial 1 Year 4 Session 2024/2025

What is the nerve fibre responsible for pulpal pain?

• A-alpha fibre
• A-beta fibre
• A-gamma fibre
• A-delta fibre

Sudden loss of canal visibility on a pre-operative periapical radiograph suggests

• internal root resorption

• root perforation

• superimposition with other structures

• external root resorption

Regarding cold test

• Requires to be applied on cotton pellet

• Positive response indicates healthy pulp

• Ethyl chloride is the best material for the test

• Requires isolation with rubber dam

Mechanism of EPT for pulp sensibility testing

• Movement of fluid in dentinal tubules
• Activation of C-fibres

• Transfer of electrical current
• Change in pulpal temperature

Symptoms of reversible pulpitis includes

• Responds negatively to pulp sensibility testing

• pain accentuated by postural changes

• pain lingers after removal of stimulus

• spontaneous pain that last for few seconds

Diagnosing pulpal status involves

• Periapical radiograph
• Percussion test
• Palpation test
• Pulp sensibility test

Suitable material for direct pulp capping

• resin composite

• glass ionomer cement

• Hydraulic silicate cement
• Ethylenediamine tetracetic acid

Management of irreversible pulpitis includes

• Partial caries removal
• Pulpectomy
• Direct pulp capping
• Indirect pulp capping

Regarding deep carious lesion

• involves inner quarter of the dentine

• presence of soft dentine between caries and pulp

• not detectable by radiograph

• no risk of pulpal exposure

Ideal material for vital pulp therapy

• Calcium hydroxide

• Bioceramic material

• Glass ionomer cement

• resin composite