Background: Hypomineralized second primary molars (HSPM) is a developmental defect that affects the enamel of second primary molars. The term HSPM was coined by Elfrink et al. in 2008 to denote MIH-like demarcated opacities in second deciduous primary molars. The "Hall technique" (HT) utilizes preformed stainless-steel crowns (SSC) to manage HSPMs by placing the crown directly over affected teeth without anaesthesia, tooth preparation or caries removal, offering a conservative approach to address the structural weakness and sensitivity associated with HSPM, while preserving tooth structure and function with minimal intervention.Case Report: Healthy 5-year-old child referred to community dental services by GDP for management of HSPM’s and uncooperative behaviour. Clinical and radiographic examination revealed asymptomatic, pathosis-free, inactive cavitated lesions in URE, ULE, LLE, and sound LRE.The treatment started by managing risk factors; oral hygiene advice, dietary control, Fluoride varnish application, behavioural management and placement of fissure sealant on LRE, followed by successful SSCs installation on HSPM’s. Follow up appointment at 12 months showed normal parameters on HSPM’s, except LRE, which showed signs of early breakdown. LRE was subsequently restored with SSC and patient was discharged to GDP for continuous care.Discussion: Early dental visits for children allows early diagnosis of HSPM, which is essential to prevent future problems. Dental teams should be familiar with signs of HSPM and use high caries risk preventive strategies, as well as increased vigilance during eruption of the first permanent molars. Children with HSPM are reportedly five times more likely to develop Molar Incisor Hypomineralization.
