Lesion sterilization and tissue repair therapy (LSRT) in primary teeth: indications, technique, and clinical outcomes

Abstract

Introduction: Pediatric dentists frequently encounter primary teeth with pulpal necrosis and severe tissue damage, for which traditional treatments have been extraction and the use of space maintainers. However, the best space maintainer is preserving the tooth in the oral cavity. Based on this premise, lesion sterilization and tissue repair therapy (LSRT) was developed as a minimally invasive alternative that allows root canal disinfection without instrumentation. Objective: To train pediatric dentistry students in the indication and clinical application of LSRT, promoting evidence-based endodontic management in selected cases. Project presentation: Student training combines theoretical sessions, both face-to-face and online, on pulp treatments. In addition, students perform preclinical simulations on ivory teeth using mechanized techniques. Subsequently, they apply LSRT in patients who meet specific clinical criteria, with both clinical and radiographic follow-up. Conclusions: LSRT has proven to be effective in preserving primary teeth with a compromised prognosis by preventing clinical signs of infection. Its application is especially useful in cases where osteitis or advanced root resorption contraindicates conventional or mechanized pulpectomy.