# Association between video game addiction, stress, and bruxism in adolescents: a cross-sectional study

## TL;DR

This study finds that video game addiction in teens is linked to both awake and sleep bruxism, but the exact cause is unclear.

## Contribution

The study is the first to link video game addiction with bruxism in adolescents using a large cross-sectional sample.

## Key findings

- 50.3% of adolescents showed signs of video game addiction, with males more affected than females.
- Addicted participants had higher stress levels and were more likely to experience awake and sleep bruxism.
- Stress levels were not directly linked to bruxism, suggesting other factors may be involved.

## Abstract

This study aims to examine the association between video game addiction stress levels, and both awake and sleep bruxism in adolescents. Given the increasing prevalence of digital addiction among young populations, understanding its potential impact on oral health is essential.

A cross-sectional study was conducted with 300 adolescents aged 10–19 years. Participants completed an online survey assessing video game addiction using the short form of the Digital Game Addiction Scale − 21 (DGAS-21), stress levels using the Perceived Stress Scale (PSS), and bruxism through self-reported questionnaires based on the American Academy of Sleep Medicine (AASM) criteria. Statistical analyses included chi-square tests, independent t-tests, and point-biserial correlation analysis. A significance level of p ≤ 0.05 was considered statistically significant.

The prevalence of video game addiction in the sample was 50.3% (n = 151), with males significantly more affected than females (p < 0.05). Participants with video game addiction exhibited higher stress levels compared to non-addicted individuals (p < 0.001). A statistically significant association was found between video game addiction and both awake bruxism (r = 0.31, p < 0.001) and sleep bruxism (r = 0.28, p < 0.001). However, stress levels were not significantly correlated with bruxism (p > 0.05), suggesting that factors beyond stress may contribute to this relationship.

These findings indicate that video game addiction is associated with an increased likelihood of both awake and sleep bruxism in adolescents. However, the nature of this relationship remains unclear. Further longitudinal and experimental studies incorporating objective bruxism assessments are necessary to clarify potential causal mechanisms. Preventive measures focusing on digital well-being and stress management strategies should be considered in adolescent healthcare interventions.

The online version contains supplementary material available at 10.1186/s12903-025-06568-0.