The Effect of Cryotherapy on Treatment Outcomes for Pulpotomy

Inclusion Criteria: * Healthy patients aged at least 18 years old with deep or extremely deep carious lesions in mature permanent posterior teeth diagnose with asymptomatic or symptomatic irreversible pulpitis. Diagnoses are confirmed using Electric Pulp Test(EPT) and cold test. Pulpal and periapical diagnoses are based on terminology from the American Association of Endodontists (AAE, 2013). * Teeth are restorable with direct composite restoration. Exclusion Criteria: * Teeth with subgingival caries and/or clinical attachment loss more than 3 mm and probing depth more than 4 mm. * Negative responses to pulp sensibility tests, presence of sinus tracts, swelling, non-restorable crowns, immature roots, or no pulp exposure following complete caries removal in case of pre-operative diagnosis as asymptomatic irreversible pulpitis. * Patients with systemic diseases involving bleeding disorders such as hemophilia, Von Willebrand disease, platelet disorders. And patients under taking all kind of anticoagulant and anti-platelet. * Known allergies to non-steroidal anti-inflammatory drugs (NSAIDs). * Pregnant or lactating patients. * Teeth with pulpal obliteration. * Necrotic pulp is found after access opening. * Bleed cannot be stopped within 8 minutes after full pulpotomy