Comparison of efficacy of Pre-Cooling and Topical Anesthetic Gel on the pain perception of pediatric patients during palatal injection

Comparison of efficacy of Pre-Cooling and Topical Anesthetic Gel on the pain perception of Children during palatal injection

This study is based on community-based and pragmatic, split-based, double-blind clinical trials. The number of samples in each group is 14 and in total 28 samples. Each half-jaw is randomly assigned to the case group (cold) and control (gel). The pain intensity of the injections is evaluated by Mann-U-Whitney test in two methods.

Injection and dental work of both sides are done at a meeting in Pediatric department of dental school, Islamic Azad University of Tehran. After drying the tissue with cotton on one side, 20% benzocaine gel and the other side of the ice were used for 1 minute each. Anesthesia is performed by the first practitioner (pediatric dentist) using 2% Lidocaine anesthetic and Epinephrine 1/100,000 manufactured by Iran Daroopakhsh with a 30 gauge needle and 16 mm of length. The second operator, which is blind to the group of the study, will examine the child's behavior during an injection with SEM scale (sound, eye and motor). At the end of each of the injections, the child is asked to rate the amount of pain felt on the Wange-Baker scale.

No history of systemic diseases, phobias from injections, allergies to anesthetic substance, abscess and child be cooperative (Frankel's grade 1 or 2 ) and the need for bilateral palatal injection for routine dentistry such as extraction, dental preparation for SSC and wearing rubberdam for pulpotomy and pulpectomy.

Intervention group: Use of ice that will be prepared by emptying the lidocaine cartridge and filling it with water and placing it in freezer. Control group: use of prime gel (20% benzoycane gel) manufactured by the prime dental company of America.

The rate of pain caused by injection

It should be noted that the samples are divided into two groups, in half of them, the first injection after the use of the topical anesthetic gel and the second injection after pre-cooling, and in the second group, vice versa. The anesthetic injection is performed by the first practitioner (pediatric dentist) who is only aware of the treatment group of the study. Then, second actors (pediatric dentistry and dentistry student) who are blind to the surface anesthesia selected during the study, will examine the child's behavior when injected with SEM scale (sound, eye and motor). And match the resulting data. At the end of each of the injections, the child is asked to rate the amount of pain felt on the Wonge-Baker scale.

Will be announced at the end of the study.