Dental Nitrous Oxide Use Has Measurable Climate Impact, Study Finds - Summary - DentalSpire

Dental Nitrous Oxide Use Has Measurable Climate Impact, Study Finds

A UK quality improvement project reports wide variation in emissions and wastage from nitrous oxide sedation, highlighting opportunities to reduce environmental harm while maintaining patient care.

  • By

  • Olivia Anderson

  • February 5, 2026

  • 3 min

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Objective:

To quantify the carbon footprint of dental nitrous oxide use and identify opportunities to reduce greenhouse gas emissions while preserving patient care.

Key Findings:
  • Mean carbon footprint per sedation appointment was 28.62 kg CO2 equivalent.
  • Carbon footprint varied from 10.74 to 40.67 kg CO2 equivalent across sites.
  • Average weekly footprint per service was 518.25 kg CO2 equivalent.
  • 84% of sites used cylinder supply for nitrous oxide, while 16% used centrally piped systems.
  • Average wastage was 4% for cylinder supplies and 30% for piped supplies.
  • Flow rate had the greatest influence on overall emissions, with a mean flow rate of 5.84 L/min.
Interpretation:

Nitrous oxide used in dentistry has a significant environmental impact, primarily due to its greenhouse gas emissions, but remains clinically effective with a high success rate.

Limitations:
  • Study focused on UK dental services, limiting generalizability.
  • Variation in flow rates and administration practices may affect results.
Conclusion:

Dental clinicians should monitor nitrous oxide use and wastage, standardize training, and reassess practices to reduce carbon footprint while maintaining patient benefits.

Original Source(s)

Dental Nitrous Oxide Use Has Measurable Climate Impact, Study Finds

  • by Olivia Anderson

  • February 5, 2026

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