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Inmaculada Martín-Quintero1,2, Alberto Cervera-Sabater3, Víctor Tapias-Perero4

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Dental procedures, especially orthodontic treatments, significantly increase airborne particles in treatment rooms. Higher relative humidity correlates with increased particle generation, posing a risk to respiratory health.

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Area of Science:

  • Dental aerosol science
  • Environmental monitoring in healthcare settings

Background:

  • Dental procedures, particularly orthodontic treatments, can generate significant airborne particles.
  • Environmental factors like temperature and relative humidity within dental cabinets may influence particle dispersion.

Purpose of the Study:

  • To evaluate particle dispersion during orthodontic treatments.
  • To investigate the impact of temperature and relative humidity on particle concentration in dental settings.

Main Methods:

  • A pilot study utilized a particle counter to record particle levels, temperature, and relative humidity during 98 orthodontic appointments.
  • Control records were established before clinical activity.
  • Statistical analysis included differential descriptive procedures and regression modeling to assess the relationship between humidity and particle concentration.

Main Results:

  • Particle counts, relative humidity, and ambient temperature were significantly higher during appointments compared to control conditions (p < .001).
  • An exponential relationship was identified between relative humidity and particle number.
  • Particle concentration, especially for particles of 0.3 microns, increased during treatment.

Conclusions:

  • Dental patient entry and orthodontic procedures substantially increase airborne particle load.
  • Elevated relative humidity is linked to increased particle formation.
  • Further research is recommended due to study limitations including sample size and procedural variations.