Quantifying service pressure in the public oral health system in India and its implications for curative care and public health dentistry

Background: India’s public oral health services demonstrate a persistent mismatch between nominal work force availability and actual service delivery. Despite sanctioned posts and biometric attendance systems, care provision is dominated by drug prescriptions and dental extractions, while restorative, endodontic, and prosthetic services remain marginal. Existing manpower and infrastructure based indicators fail to explain this pattern because they do not account for functional working time, skill mix, laboratory support, and accountability. Objectives: To develop and operationalize a Service Pressure Index (SPI) that quantifies the imbalance between required and available service capacity in India’s public oral health system, and to explain how elevated service pressure structurally drives extraction dominant care and limits definitive treatment. Methods: SPI was defined as the ratio of time required to deliver standard dental care to the time effectively available under routine public sector conditions. Required time was estimated using conservative procedure specific chair-side norms, while available time was adjusted for early staff exit after biometric attendance, administrative duties, equipment downtime, and supply interruptions. The base SPI was further modified using weighted system level adjustment factors representing manpower distribution, skill mix inadequacy, supply reliability, laboratory support, patient load variability, and accountability. A final accountability coefficient was applied to reflect governance quality. Results: For a typical public dental facility managing approximately 30 outpatients per day, the time required for clinically appropriate care was estimated at 825 minutes, while effective clinicaltime available was approximately 210 minutes, yielding a base SPI of 3.93. After applying system adjustment weights and accountability correction, the final SPI approached 7.0,indicating severe service overload. At this level of service pressure, rapid low time interventions (prescriptions and extractions) dominate, while restorations, root canal treatments, and prosthetic rehabilitation become structurally non-viable. Conclusion: The Service Pressure Index provides a transparent, reproducible explanation for long observed patterns in India’s public oral health services. High SPI values make definitive curative care impractical, rendering prevention the only sustainable strategy. Strengthening Public Health Dentistry is essential to reduce service pressure and restore functional equity in public oral healthcare delivery.