An Investigation Into Contaminated Waste Composition in a University Dental Clinic: Opportunities for Sustainability in Dentistry.

OBJECTIVES

Many international dental organizations have been advocating for sustainable practices in dentistry, whereby significant reductions in environmental impacts are needed. The aim of this study was to analyze dental clinical waste in a university clinic setting to explore opportunities for sustainable practices.

MATERIAL AND METHODS

Fifty dental units (chairs) that are routinely used in delivery of dental treatment and involved supervising clinicians, dental students, and patients were randomly selected, and the clinical waste generated was collected, segregated, and weighed. Statistical analysis was performed to analyze differences in waste production based on treatment performed.

RESULTS

The mean waste production generated by each chair was 81.4 g of aprons, 56.2 g of gloves, 17.2 g of masks, 24.0 g of sterile wrappings, 48.8 g of other plastics, 100.8 g of cellulose-based items, and 25.8 g of miscellaneous items. Higher waste was generated from the chairs performing endodontic procedures when compared with examinations. A potential annual greenhouse gas saving of approximately 10 kg COe per year (when one patient is treated daily) can be achieved if sterile wrapping plastics were to be recycled.

CONCLUSIONS

Simple yet achievable opportunities for efficient clinical waste management at university clinics exist, which in turn will increase environmental sustainability in the post-COVID-19 era. Increased awareness and incentives for sustainable measures could potentially enhance the possibility of wider adoption of ecofriendly approaches.