IRCT20230615058492N4 IRCT 2026-05-05 Yazd University of Medical Sciences The effect of diaphragmatic breathing in reducing anxiety in patients undergoing treatment for crime. Studying the effect of diaphragmatic breathing (deep breathing) in reducing anxiety in patients undergoing scaling and root planing treatment 2026-05-29 anticipated 60 Recruiting https://irct.ir/trial/89631 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Education/Guidance, Randomization description: Randomization is performed using the block random allocation method. First, using the PASS 2021 software, we generate a random sequence using the block random allocation method of 15 blocks of 4. The software output is in the form of an Excel file containing a sequence of numbers from one to 60 and a unique code for the research units. Eligible individuals are assigned numbers from one to 60 and are assigned to an intervention group (A or B). The first eligible individual to refer is assigned number 1, the second individual is assigned number 2, and so on, up to 60 patients are assigned to the groups. In order to blind the random assignment of the clients, we seek the help of a third person who is unaware of the interventions and this table is given to him. When the eligible person refers to the study, the third person is asked by voice over the telephone based on the individual number of the intervention group and the individual's assignment to one of the groups is determined and carried out. N/A Patients with periodontitis. Intervention 1: Intervention group: In this group, patients are taught diaphragmatic breathing and during treatment, patients are asked to perform diaphragmatic breathing. Intervention 2: Control group: This group is not given training and does not perform any actions during treatment. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no further information