Magic Tricks Calm Young Dental Patients During Nerve Blocks and Pulpotomies

A deck of cards and a well-timed sleight of hand may do more for a frightened child in the dental chair than many pharmacological tools, according to a new randomized clinical trial published in BMC Pediatrics. Researchers in Iran tested whether performing a magic trick could reduce pain and anxiety in children aged five to seven years undergoing two of the most intimidating procedures in pediatric dentistry: the inferior alveolar nerve block, an injection that numbs the lower jaw, and pulpotomy, a procedure that removes inflamed tissue from the pulp chamber of a decayed primary molar. The results showed that children who watched a magic trick recorded significantly lower heart rates, lower self-reported pain scores, and calmer observable behavior than children managed with a standard behavioral technique alone.

The trial, led by Narjes Amrollahi and Reyhaneh Faghihian of the Dental Research Center at Isfahan University of Medical Sciences, together with Sanaz Rajaei of Arak University of Medical Sciences and statistician Mohammad Javad Tarrahi, enrolled thirty children who needed pulpotomy on both mandibular primary molars, the lower baby teeth on either side of the mouth. Because each child served as his or her own control in a split-mouth crossover design, the comparison between the two behavioral conditions was unusually clean. Each child experienced both interventions across two treatment sessions, with the order randomized so that fifteen children received the standard technique first and the magic-enhanced version second, while the other fifteen experienced the reverse sequence.

The standard approach was the tell-show-do technique, a cornerstone of pediatric behavioral dentistry that has been used for decades. The dentist tells the child what will happen in age-appropriate language, shows the instruments and demonstrates their use, and only then performs the procedure. It is effective but relies on verbal reassurance and gradual desensitization. In the magic trick condition, the researchers added a live conjuring performance to this routine, capturing the child’s attention with an impossible event at the moments of highest stress, namely during the nerve block injection and the pulpotomy itself.

Measuring anxiety in young children is notoriously difficult, so the team used three complementary instruments. Heart rate was recorded with a pulse oximeter before and after both the nerve block and the pulpotomy, providing a physiological proxy for the autonomic arousal that accompanies fear. The Sound, Eye, Motor scale, known as the SEM scale, allowed a trained observer to grade the child’s behavior during treatment on a continuum from comfortable cooperation to crying and physical resistance. After each procedure, the children rated their own pain on the Wong-Baker Faces Pain Rating Scale, a validated tool in which patients point to a series of cartoon faces ranging from a smiling expression to one crying hard.

The statistical analysis, using chi-square tests, analysis of variance, and independent t-tests at a significance threshold of 0.05, found consistent advantages for the magic trick condition. Mean heart rate, Wong-Baker pain scores, and SEM behavior scores were all significantly lower when children were managed with the magic trick than with the tell-show-do technique alone, both during the nerve block and during the pulpotomy. In practical terms, children whose attention was captured by a conjuring trick kept calmer while the needle went in, reported less pain afterward, and cooperated better throughout the procedure than the same children did in the control session.

One nuance in the data deserves attention. In a crossover design, researchers must check whether the experience of the first session carries over into the second, a phenomenon called the carryover effect. In this trial, the carryover effect was significant only for the Wong-Baker pain scores, meaning that the order in which a child experienced the two conditions influenced self-reported pain, perhaps because children who had already enjoyed a magic trick in the first session expected or remembered it in the second. Heart rate and SEM behavior scores, by contrast, were free of this contamination, strengthening confidence in those findings.

The physiological logic behind the intervention is straightforward. Pain perception and anxiety amplify one another in a feedback loop: fear raises muscle tension and autonomic arousal, which heightens the salience of noxious stimuli, which in turn increases fear. Attention is a limited cognitive resource, and a compelling, surprising stimulus such as a magic trick competes directly with the processing of threatening cues like the dental syringe. By occupying the child’s attentional bandwidth at the critical moment, the magician effectively reduces the cognitive space available for pain and fear processing, an effect documented in adult studies of distraction but rarely tested with live conjuring in a randomized pediatric dental trial.

The choice of population matters as well. Children between five and seven years old are at a developmental stage where dental anxiety often crystallizes into lifelong dental phobia, and where cooperation during invasive procedures is least reliable. The inferior alveolar nerve block is widely regarded as the most painful injection in pediatric dentistry because the needle must reach deeper tissue near the mandibular nerve, and pulpotomy adds the sound and vibration of rotary instruments. An intervention that lowers both physiological arousal and behavioral distress in this setting, without drugs, sedation, or extra chair time for pharmacological monitoring, has obvious appeal for clinicians and parents alike.

The study was registered in the Iranian Registry of Clinical Trials, approved by the ethics committee of Isfahan University of Medical Sciences, and conducted according to the Declaration of Helsinki, with written parental consent for all participants. The authors report no competing interests and received no specific funding for the project. As with any trial of thirty children, the findings should be replicated in larger and more diverse samples before magic becomes standard chairside practice, and the significant carryover effect on pain scores suggests that future crossover designs should account carefully for sequencing. Still, the trial adds rigorous evidence to a growing literature on non-pharmacological anxiety management in pediatric dentistry.

For a specialty long dominated by the choice between restraint, reassurance, and sedation, the image of a dentist pausing to perform a card trick before picking up the syringe is a striking one. It suggests that the most powerful anxiolytic in the operatory may sometimes be not a drug but a moment of genuine wonder, timed precisely to the instant a child needs it most.

Subject of Research: Effect of a magic trick on pain and anxiety in children undergoing dental nerve block and pulpotomy

Article Title: Effect of magic trick on pain and anxiety of 5-7-year-old children during inferior alveolar nerve block and pulpotomy of mandibular primary molars: a cross over randomized clinical trial

Article References: Amrollahi, N., Faghihian, R., Rajaei, S., & Tarrahi, M. J. (2026). Effect of magic trick on pain and anxiety of 5-7-year-old children during inferior alveolar nerve block and pulpotomy of mandibular primary molars: a cross over randomized clinical trial. BMC Pediatrics. https://doi.org/10.1186/s12887-026-07893-1

Image Credits: AI Generated

DOI: 10.1186/s12887-026-07893-1

Keywords: pediatric dentistry, dental anxiety, pain management, magic trick, inferior alveolar nerve block, pulpotomy, randomized clinical trial, tell-show-do technique, heart rate, Wong-Baker Faces Pain Rating Scale, SEM scale, non-pharmacological intervention