THERE IS PLENTY OF 'UNTAPPED FRONTIER' IN DENTISTRY-MANAGEMENT OF DENTAL 'E-WASTE'- A REVIEW.

American Journal of Sustainable Cities and Society Issue 15, Vol. 2, 2025 Available online on http://www.rspublication.com/ajscs/ajsas.html ISSN 2319 – 7277 DOI: 10.5281/zenodo.17461905 Original Article ©2025 RS Publicaon, rspublica[email protected] 679 THERE IS PLENTY OF ‘UNTAPPED FRONTIER’ IN DENTISTRY-MANAGEMENT OF DENTAL ‘E-WASTE’- A REVIEW. Dr.B. LakshmanaRao 1 , Dr.K. Sridevi 2 , Dr. Girisha 3 . 1.Prof & HOD, Dept of Prosthodontics, Lenora Institute of Dental Sciences, Rajahmundry, A.P., 2. Prof & HOD, Dept of Oral Medicine and Radiology, Lenora Institute of Dental Sciences, Rajahmundry, A.P., 3. Reader, Dept of Prosthodontics, Lenora Institute of Dental Sciences, Rajahmundry, A.P. ARTICLE INFO Abstract ©2025 RS Publicaon Paper ID: AJSCS68FF0397D2B94 Received: 2025-09-28 Published: 2025-10-28 DOI: https://dx.doi.or g/10.5281/zenodo. 17461905 Page No: 679-686 E-waste in dentistry is the term for old electronic devices and equipment that dentists throw away. This includes digital radiography units, CAD/CAM milling machines, curing lamps, intraoral cameras, and computer systems. As more and more dentists use digital tools, more e-waste is being made. This is bad for the environment and health because these gadgets contain dangerous chemicals including mercury, lead, cadmium, and brominated flame retardants. To keep contamination from happening and to encourage resource recovery, dental e-waste must be properly sorted, recycled, and thrown away at accredited facilities. Also, dental offices can make less e-waste and be more environmentally friendly by following the rules of reduce, reuse, and recycle. Regulatory frameworks like Extended Producer Responsibility (EPR) require producers to be in charge of the entire life cycle of their products, which makes it safer to handle e-waste. Overall, it is very important for dentists to use full e-waste management plans to protect the environment and improve long-term oral health. Keywords: E-waste, dentistry, digital dental devices, hazardous substances, recycling, Extended Producer Responsibility (EPR), sustainability, hazardous waste management. Corresponding Author: Dr. B. LakshmanaRao, Mail: [email protected] Introduction: Dental clinics today rely significantly on electronic and digital technology, which eventually breaks down or becomes obsolete. This is known as electronic trash (e-waste). American Journal of Sustainable Cies and Society Available online on h!p://www.rspublicaon.com/ajscs/ajsas.html ISSN 2319 – 7277 CODEN(USA): Ajscs0] Cite This Paper: LakshmanaRao Bathala, Dr.K. Sridevi and Dr. Girisha (2025). "THERE IS PLENTY OF ‘UNTAPPED FRONTIER’ IN DENTISTRYMANAGEMENT OF DENTAL ‘E-WASTE’- A REVIEW.". AMERICAN JOURNAL OF SUSTAINABLE CITY AND SOCIETY (AJSCS), vol. 15, no. 5, 2025, pp. 679-686. DOI: https://dx.doi.org/10.5281/zenodo.17461905 American Journal of Sustainable Cities and Society Issue 15, Vol. 2, 2025 Available online on http://www.rspublication.com/ajscs/ajsas.html ISSN 2319 – 7277 DOI: 10.5281/zenodo.17461905 Original Article ©2025 RS Publicaon, rspublica[email protected] 680 Sources of E-waste in Dental Practice: 1. Digital diagnostic tools Intraoral scanners, digital X-ray sensors, CBCT devices, old PCs, displays, and printers Old software and hardware interfaces 2. Tools for the dental lab Furnaces, CAD/CAM milling devices, 3D printers, and scanners 3. Tools for cleaning and keeping things clean Ultrasonic cleaners, autoclave controllers, and LED curing lights 4. Small electronics Electric handpieces, endomotors, apex locators, curing lamps, and ultrasonic scalers 5. Cables and batteries Rechargeable batteries for handpieces, wireless sensors, and remote controllers Cords, chargers, and adapters for power Why It's a Problem: A lot of these gadgets have dangerous parts and heavy metals including lead, mercury, and cadmium. If you put away biomedical waste in conventional trash bins, it can cause: Contamination of soil and groundwater; Incineration causes air pollution; Risks for workers who handle trash. How to Handle E-Waste in Dentistry Safely: 1. Keep e-waste apart from biomedical waste. 2. Put a label on it and keep it in a dry, safe place until it's picked up. 3. Recycle in a responsible way by using e-waste recyclers that are licensed. 4. Keep records of how you got rid of things according to the E-Waste Management Rules (India,2022). Instead, then throwing away usable equipment, upgrade it or give it away. [1,2] E-waste is one of the fastest growing solid waste streams in the world. In 2022, an estimated 62 million tonnes of e-waste were produced globally. Only 22.3% was documented as formally collected and recycled. [3] Lead is a common substance released into the environment when e-waste is recycled, stored or dumped using informal activities, including open burning. Studies highlight that both biomedical American Journal of Sustainable Cities and Society Issue 15, Vol. 2, 2025 Available online on http://www.rspublication.com/ajscs/ajsas.html ISSN 2319 – 7277 DOI: 10.5281/zenodo.17461905 Original Article ©2025 RS Publicaon, rspublica[email protected] 681 and electronic waste from dental clinics pose environmental and occupational hazards if not managed properly. Sustainable waste management practices—including proper segregation, recycling of electronic components, and partnering with certified waste handlers—are essential for minimizing ecological impact. [4] Classification of Ewaste generating in Dental practice E-waste produced in dental practices can be categorized according to its origin, composition, and possible risks to environmental and human health. In today's dental clinics, e-waste comes from diagnostic and therapeutic gadgets, communication systems, and office equipment. The following is a classification based on pertinent literature and healthcare waste regulations. Major Classifications of Dental E-Waste [5-8] Category Description Common Examples in Dentistry 1. Information Technology and Communication Equipment (ICT Equipment) Electronic devices used for patient record management, scheduling, or digital imaging storage Computers, monitors, printers, scanners, tablets, and digital storage drives. 2. Medical and Laboratory Electronic Equipment Diagnostic and therapeutic machines containing electronic or electrical components used in patient care Digital X-ray units, intraoral cameras, apex locators, ultrasonic scalers, curing lights, electronic pulp testers, autoclaves with control panels, and dental lasers. 3. Small Electronic Appliances Compact, frequently replaced electronic devices and accessories in dental practices Digital thermometers, electronic timers, portable suction units, and rechargeab le handpiece units. 4. Mixed Electronic Components and Consumables Minor electronic parts that contribute to e-waste during replacements, repairs, or upgrades Circuit boards, batteries, wiring, sensors, chargers, and display panels. 5. Hazardous Electronic Waste Electronic materials containing heavy metals or hazardous elements like mercury, cadmium, or lead Amalgam separators, X-ray film processors (silver-containing fixer/developer), mercurycontaining lamps, and lead aprons. 6. Office and Administrative EWaste Equipment indirectly related to clinical procedures but used for practice management Photocopiers, telephones, fax machines, routers, and power backup systems (UPS). Regulatory and Environmental Perspective According to healthcare waste management rules, e-waste from dental offices is classified as hazardous healthcare waste. To make sure that valuable metals are safely disposed of and American Journal of Sustainable Cities and Society Issue 15, Vol. 2, 2025 Available online on http://www.rspublication.com/ajscs/ajsas.html ISSN 2319 – 7277 DOI: 10.5281/zenodo.17461905 Original Article ©2025 RS Publicaon, rspublica[email protected] 682 recovered, e-waste must be separated at the source, tagged correctly, and given to authorized ewaste recyclers or handlers. [9] Key Characteristics It has persistent organic pollutants (POPs) and heavy metals as Hg, Pb, Cd, and Cr. If mixed with regular trash, it could be poisonous and not break down. Needs to follow the recycling rules set by health and environmental agencies. There are six main types of dental e-waste: IT systems, diagnostic electronics, small appliances, consumables, hazardous components, and administrative equipment. All of these need to be managed in a way that is safe for the environment to reduce risks. [3,5] Does Ewaste will generate from the CAD/CAM milling machines? CAD/CAM milling equipment used in dental practice might create e-waste. These machines are advanced electrical and computer-controlled tools that make dental prosthetics including crowns, bridges, and dentures out of materials like zirconia, wax, PMMA, and resin. CAD/CAM milling machines make e-waste like: Electronic circuit boards and control panels inside the milling unit, there include motors, sensors, and spindle parts, as well as USB and data interface devices. Milling burs (tools) that wear out and need to be replaced, left over materials and leftover powders from ceramics or composites that have been ground up, Outdated or broken parts and pieces when you upgrade or get rid of old machines. The leftover zirconia or other milled material powders are also a consequence of the milling process, therefore they need to be properly disposed of or recycled. So, CAD/CAM milling machines add to e-waste by having electronic parts and consumables, and it is very important for dental practices to get rid of or recycle them in a healthy way for the environment. This fits with the bigger picture of electronic trash that dental offices make, where computers and automated gadgets are becoming more typical sources of e-waste. [10-11] All E-waste can be recycled? Because electronic gadgets and materials are so different and complicated, not all e-waste can be properly recycled. Recycling precious metals like gold, silver, and copper from e-waste has come a long way, but plastics, glass, and other dangerous chemicals are still hard to recycle completely. To get valuable metals out of the recycling process, it usually includes pretreatment (taking apart and reducing size), physical separation (density, magnetic, and electrostatic), and metallurgical or chemical refinement. But because of economic and technical limits, non-metallic materials and complicated assemblies generally wind up in landfills or incinerators. Flame retardants, American Journal of Sustainable Cities and Society Issue 15, Vol. 2, 2025 Available online on http://www.rspublication.com/ajscs/ajsas.html ISSN 2319 – 7277 DOI: 10.5281/zenodo.17461905 Original Article ©2025 RS Publicaon, rspublica[email protected] 683 lead, mercury, and cadmium are dangerous materials that need extra care to keep the environment safe. This could make recycling less effective. High-pressure compaction, thermal treatment, and biohydrometallurgy are some of the new treatment technologies that are being developed to increase recovery rates and cut down on waste. Sustainable e-waste management also stresses reuse, refurbishment, and expanded producer responsibility as ways to cut down on trash. while a significant amount of e-waste is recyclable, comprehensive recycling of all materials remains unattainable due to technical, economic, and environmental obstacles; continuous research and development endeavours to enhance this situation. [12-14] Which type of Dental E-waste can be recycled? In dental practice, metals, plastics, and glass are the main materials that can be recycled well. Some types of dental e-waste that can be recycled are: Computers, displays, printers, digital X-ray sensors, and intraoral cameras are examples of electronic devices and parts that include rich metals like gold, silver, copper, and rare earth elements that can be recovered by recycling. Medical Electronic Equipment: You may take apart digital curing lamps, ultrasonic scalers, apex locators, and milling machine electronics to get metals, circuit boards, and plastic parts back. Batteries: Rechargeable batteries used in handpieces or portable dental instruments contain chemicals including lithium, nickel, and cadmium that need particular recycling to keep the environment clean. Lighting Devices: You can recycle LED lights, fluorescent bulbs, and curing light bulbs from a dental practice to get back dangerous materials like indium and gallium. Cables, wiring, and small electronic accessories: Power cords, chargers, USB connectors, and other electronic accessories have recyclable materials like copper and plastic. Some parts, such amalgam that contains mercury or some mixed-material assemblies, may need particular care and can't be entirely recycled using regular e-waste methods. Using authorized e-waste recycling centers and properly separating the materials will get the most out of the materials and have the least effect on the environment. Most dental e-waste, like electrical equipment, batteries, lighting, and wiring, can be recycled to get back valuable metals and other materials. However, dangerous parts need to be thrown away carefully. [15-17] American Journal of Sustainable Cities and Society Issue 15, Vol. 2, 2025 Available online on http://www.rspublication.com/ajscs/ajsas.html ISSN 2319 – 7277 DOI: 10.5281/zenodo.17461905 Original Article ©2025 RS Publicaon, rspublica[email protected] 684 How to dispose dental e-waste? When getting rid of dental e-waste, it's important to follow environmental and legal rules to keep people safe from the harmful chemicals in electronic dental tools. There are a few important procedures to follow while getting rid of things the right way: 1. Separation and Collection: Computers, digital X-ray sensors, curing lamps, amalgam separators, and batteries that are dental e-waste must be segregated from other trash and stored in special containers. 2. Work with qualified e-waste recyclers: Work with e-waste recycling centers that have been certified to handle dangerous electronic materials. These places safely take apart, process, and recycle metals, plastics, and other harmful materials. 3. Special Handling of Hazardous Components: Mercury-containing dental amalgam waste must be put in containers made just for mercury and shipped to a certified mercury recovery facility. You should also use silver recovery equipment to get silver out of X-ray fixer solutions and recycle it. 4. Data Security: All patient and practice data must be securely deleted or destroyed from electronic devices before they are thrown away to safeguard privacy. 5. Avoiding Improper Disposal: Don't pour chemical disinfectants, sterilants, or solvents down the drain or into a septic system. Hazardous waste transporters should take care of these compounds in the right way. 6. Documentation: Keep track of e-waste disposal by noting the amount, kind, date, and recycling center information to make sure you follow the rules and are responsible. 7. Reduce and Reuse: To make things last longer and cut down on waste, prioritize fixing or selling working equipment. To get rid of dental e-waste safely, it needs to be separated, recycled by a certified company, managed as hazardous trash, have its data deleted securely, and follow rigorous environmental rules to reduce hazards and get back precious resources. [18-21] Conclusion Because clinical and laboratory processes are becoming more digital, e-waste in dentistry is becoming a bigger problem. The widespread use of digital radiography systems, CAD/CAM units, intraoral scanners, and other electronic dental instruments has greatly increased the amount of e-waste produced in dental healthcare settings. Toxic substances including mercury, lead, cadmium, and silver in this garbage could be bad for the environment and human health if they American Journal of Sustainable Cities and Society Issue 15, Vol. 2, 2025 Available online on http://www.rspublication.com/ajscs/ajsas.html ISSN 2319 – 7277 DOI: 10.5281/zenodo.17461905 Original Article ©2025 RS Publicaon, rspublica[email protected] 685 are not thrown away properly. So, to lessen the effects of e-waste, it is important to handle it properly by separating it, recycling it, and working with licensed disposal companies. It is both morally and legally wrong for dentists to not recycle the electronic waste from their offices in a way that is good for the environment. Using amalgam separators, digital radiography to cut down on chemical waste, and following the rules set by the Extended Producer Responsibility (EPR) and Central Pollution Control Board (CPCB) are all examples of best management practices that help protect the environment. For changing people's minds and making sure they follow eco-friendly disposal methods, dental professionals and students need to be educated and aware. References: 1.Murali Mohan Thota, Lakshmana Rao Bathala, Kotaiah Theruru, Sharaz Shaik, Bharat Jupidi, Srinivas Rayapati. “There’s plenty of room at the bottom”: The biomedical waste management in dentistry. Journal of Dr. NTR University of Health Sciences 2014;3(3) 149-155. 2. Tackling informality in e-waste management: the potential of cooperative enterprises. Geneva: InternationalLabourOrganization;2014. Available from:https://www.ilo.org/sector/Resources/publications/WCMS_315228/lang-- en/index.htm. Last accessed on 17th Oct 2025. 3.Balde CP, Kuehr R, Yamamoto T, McDonald R, D’Angelo E, Althaf S et al. The Global Ewaste Monitor 2024. Bonn, Geneva: International Telecommunication Union, United Nations Institute for Training and Resources; 2024.Available from:https://ewastemonitor.info/ .Last accessed on 5th Oct 2025. 4.Subramanian AK, Thayalan D, Edwards AI, Almalki A, Adith Venugopal A. Biomedical waste management in dental practice and its significant environmental impact: A perspective. Environmental Technology & Innovation 2021; 24: 101807. 5. 5.Electronic Waste Management in Medical Facilities. Available from: https://bwaste.com/resources/the-knowledge-center/articles-insights-and-updates/electronicwaste-management-medical. Last accessed on 18th Oct 2025. 6. 8Types of eWaste and How to Recycle Them. Available from: https://ewasa.org/8-types-ofewaste-and-how-to-recycle-them/. Last accessed on 18th Oct 2025. 7.What Are The Four Types Of Medical Waste. Available from: https://www.pureway.com/blog/four-types-of-dental-waste. Last accessed on 15th Oct 2025. 8.Dawn Connelly. Dental Waste Categories. Available from: https://allpointsmedicalwaste.com/dental-waste-categories/. Last accessed on 23rd Oct 2025. American Journal of Sustainable Cities and Society Issue 15, Vol. 2, 2025 Available online on http://www.rspublication.com/ajscs/ajsas.html ISSN 2319 – 7277 DOI: 10.5281/zenodo.17461905 Original Article ©2025 RS Publicaon, rspublica[email protected] 686 9.Guidelines for Management of Healthcare Waste as per Biomedical Waste Management Rules, 2016. Available from: https://cpcb.nic.in/uploads/projects/bio-medicalwaste/guidelines_healthcare_june_2018.pdf. Last accessed on 8th Sep 2025. 10. Ahmed Yaseen Alqutaibi,Hatem Hazzaa Hamadallah , Aseel Mohammed Aloufi , Ayman Thamer Alharbi , Rawan Mohammed Alaydaa , Mohammed Ahmed Alghauli. Dental zirconia residuals recycling: processes, applications, and future perspectives: a scoping review. BMC Oral Health. 2025 May 14;25:725. doi: 10.1186/s12903-025-06093-0. 11.Noha Khaled Eid. A Review on the Power of CAD/CAM Technology and the Material Science in Modern Manufacturing. ERURJ 2025, 4, 1, 2223-2250. 12.Niu and Li. E-waste treatment methods including high-pressure compaction and cement solidification. Handbook of Electronic Waste Management. 2022. 13.Hsu et al. Physical and chemical separation techniques for WEEE recycling. Handbook of Electronic Waste Management. 2022. 14.International Journal of Intelligent Systems and Applications in Engineering. Effective ewaste solutions: recycling, reuse, and sustainable product improvement. 2025 Apr 18. 15.Ewasa.org. 8 Types of eWaste and How to Recycle Them. 2025 Feb 24. 16.WHO. Electronic waste (e-waste). 2024 Sep 30. 17.RTS.com. The Complete E-Waste Recycling Process. 2025 Jan 14. 18.Central Pollution Control Board. Guidelines for Management of Healthcare Waste. 2018. 19.Indian Dental Association. Biomedical Waste Management Protocol. 20.MedPro Disposal. Managing Electronic Waste in Healthcare. 2023. 21.OpenDental Blog. Safely Recycling Your Dental Practice's Electronics. 2020.