Evaluation of the effect of low power laser in reducing the pain of mandibular block injection in restorative patients

Evaluation of the effect of low power laser in reducing the pain of mandibular block injection

A clinical trial with a control group, with a parallel, double-blind, randomized group, on 59 patients, the RANDBETWEEN command of Excel software was used for randomization.

For each patient, two injections of the alveolar block in the posterior area of ​​both sides of the mandible will be performed twice in two weeks at the dental school. In the first session, for all patients, mandibular molar restoration is performed on the right side. For this purpose, using a table of random numbers, people are divided into two groups: laser and placebo. In the second session, restoration is performed on the left tooth and the methods are changed in such a way that patients who received a laser in the first session receive a placebo on the left side and patients who received a placebo receive a placebo this time on the left side. Left receive the laser. The patient and the outcome assessor will be blind during the intervention.

Inclusion criteria: general health, insensitivity to lidocaine injection, no painkillers, anesthesia, sedation and antidepressant for two weeks, no pregnancy Exclusion criteria include: non-cooperation, sensitivity to injectable drug, more than one injection per person, withdrawal of participants

The intervention involves the use of a low-power laser before the injection, in the intervention group the laser is irradiated and then the injection is performed.

Measurement of pain during injection of mandibular alveolar nerve block

Randomization is done only in the first session in a simple and individual way. A table of random numbers is used for randomization. In Excel software environment, four-digit codes are generated using the RANDBETWEEN command. Each patient is assigned a 4-digit code that if the end digit to the right of the code is 1, 2, 5, 7, 9, at the first visit, they will be given laser radiation, and if the end digit of the code is 0, 3, 4, 6, 8 In the second visit, laser radiation is performed for them. All codes are recorded on paper and stored in specific envelopes. The envelopes are arranged randomly and the responsible secretary, who is aware of the objectives of the study, will give them one of these envelopes before entering the doctor's room when reviewing the inclusion criteria and recording patient information.The secretary is not aware of the study hypothesis and is not aware of the details of the codes for assigning to groups. The doctor will decide on the treatment process for the patient based on the specified code.

This study is designed in two forms. Patients are not exposed to the laser radiation. For this purpose, when the laser is not irradiated, the device is still on, which makes the patient unaware of whether the device is on or not by making a sound. Also, the outcome assessor is not in the process of allocating patients. Therefore, they are also unaware of how to allocate.