Opioid-prescribing Practices in a Graduate Endodontic Clinic before and after Implementation of the Federal Schedule II Prescribing Mandate

Introduction: Opioid prescriptions have the potential for misuse. In October 2014, the federal schedule II prescribing mandate reclassified hydrocodone combination products from schedule III to schedule II drugs that required a written prescription. The aim of this study was to evaluate the opioid-prescribing practices in a graduate endodontic clinic (GEC) before and after the mandate. Methods: Electronic health records from all patients treated in the GEC from 2010 to 2018 were reviewed retrospectively for opioid prescribing, the date of prescription, and the Current Dental Terminology code. Where opioid prescribing was documented in the electronic health record, additional data were extracted about pulpal and periapical diagnosis, pain level, opioid type, and prescription details. Prescribing rates were calculated and analyzed by using chi-square, analysis of variance, logistic regression, and multivariable analysis. Significance was set at P < .05. Results: Overall, 4851 patients underwent 7841 procedures; 92.2% of patients were never prescribed opioids. The remaining 380 patients underwent 420 procedures, and 509 prescriptions were provided. Prescribing rates were 7.5% (228/3021) before versus 4.0% (192/4820) after the mandate (P < .001). Hydrocodone combinations were the most prescribed opioid (77%, 392/509). Tramadol prescribing increased after the mandate (P = .023). Multivariable analysis showed significantly higher prescribing for apicoectomy procedures (P < .001). Preoperative pulpal and periapical diagnosis and pain level were not significantly associated with opioid prescribing. Conclusions: An overall reduction in opioid-prescribing rates occurred coincidentally with the 2014 federal mandate. The lack of correlation between prescribing and pain level highlighted the need for evidence-based rather than habitual prescribing protocols in the GEC.