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Background <p>We hypothesized that wearing a mouthguard may affect salivary flow and composition. Therefore, we investigated the impact of mouthguard use on saliva secretion rate and some salivary constituents under different jaw activities.</p> Methods <p>This was a randomized crossover experimental study including 13 volunteers. Saliva samples of the volunteers were collected and analysed in four different experimental conditions: without mouthguard with relaxed jaw (RJ), without mouthguard after repetitive jaw contractions (JC), with mouthguard with relaxed jaw (MG-RJ) and with mouthguard after repetitive jaw contractions (MG-JC).</p> Results <p>Saliva secretion rate was significantly higher in the condition MG-JC compared to all other conditions (<i>P</i> &lt; 0.01). Total protein concentration and Mucin 5B (MUC5B) levels in saliva did not differ significantly between the four experimental conditions. Immunoglobulin A (IgA) concentrations were significantly lower in the condition MG-JC compared to all other conditions (<i>P</i> &lt; 0.01).</p> Conclusion <p>Mouthguards increase saliva flow rate, compared to not wearing a mouthguard, and jaw contractions enhance this effect compared to a relaxed jaw. Wearing a mouthguard during active jaw activity reduced the concentration of salivary IgA.</p>

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Influence of sport mouth-formed type mouthguards on saliva secretion and composition during jaw activity: a pilot study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月10日

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  • K. E. van Vliet,
  • F. Lobbezoo,
  • A. P. van Splunter,
  • J. de Lange,
  • H. S. Brand

摘要

Background

We hypothesized that wearing a mouthguard may affect salivary flow and composition. Therefore, we investigated the impact of mouthguard use on saliva secretion rate and some salivary constituents under different jaw activities.

Methods

This was a randomized crossover experimental study including 13 volunteers. Saliva samples of the volunteers were collected and analysed in four different experimental conditions: without mouthguard with relaxed jaw (RJ), without mouthguard after repetitive jaw contractions (JC), with mouthguard with relaxed jaw (MG-RJ) and with mouthguard after repetitive jaw contractions (MG-JC).

Results

Saliva secretion rate was significantly higher in the condition MG-JC compared to all other conditions (P < 0.01). Total protein concentration and Mucin 5B (MUC5B) levels in saliva did not differ significantly between the four experimental conditions. Immunoglobulin A (IgA) concentrations were significantly lower in the condition MG-JC compared to all other conditions (P < 0.01).

Conclusion

Mouthguards increase saliva flow rate, compared to not wearing a mouthguard, and jaw contractions enhance this effect compared to a relaxed jaw. Wearing a mouthguard during active jaw activity reduced the concentration of salivary IgA.