Effect of Cryotherapy and LLLT on Postoperative Pain After Root Canal Treatment

Inclusion Criteria: * The informed consent form is signed by the parent, * The patient is between the ages of 6-9, * The patient is cooperative (Frankl scale category 3 and 4), * Having a history of spontaneous pain in primary molar teeth, * Percussion sensitivity value before treatment is 5 or above 5 on the VAS pain scale, * Presence of a primary molar tooth with acute or chronic infection in its pulp, * When the crown pulp of primary molar teeth is removed, the bleeding in the root pulp does not stop or does not exist within 5 minutes, * Primary molars that can be isolated with rubber-dam, Exclusion Criteria: * Patients with any systemic disease (including conditions requiring antibiotic prophylaxis) or psychiatric problems, * Patients who used any analgesic, anti-inflammatory or antibiotic in the last 1 week in the last 24 hours before root canal treatment, * Patients who are allergic to the materials used in the treatment, * Primary molar teeth with excessive crown destruction that cannot be restored, * Primary molar teeth with bone loss between roots exceeding 1/3, * Having previously applied root canal treatment or amputation treatment in the relevant tooth, * Presence of internal/external and physiological root resorption in the relevant tooth, * Teeth with root fracture, ankylosis or mobility (Miller mobility classification 3 and 4), * Teeth with excessive crown destruction that cannot be restored or a rubber-dam can be placed,