Selective Versus Non-selective Caries Excavation in MIH Affected Teeth.

Inclusion Criteria: * The patient age \<13 years old * Non -contributory medical history * Molar affected with MIH as per EAPD diagnostic criteria (White, creamy, or yellow to brownish opacities greater than one millimeter with/without postoperative enamel breakdown). * Deep caries extending\>= 2/3 of dentine but not exposing the pulp on the bitewing radiograph. * The tooth should give positive response to cold sensibility testing. * Clinical diagnosis of normal/ reversible pulpitis * The tooth is restorable, probing pocket depth and mobility are within normal limits. * No signs of pulpal necrosis including sinus tract or swelling * No radiographic evidence of periapical changes indicative of apical periodontitis. Exclusion Criteria: * Medically compromised patient. * Non-restorable tooth. * Clinical diagnosis of irreversible pulpitis. * Signs of pulpal necrosis including sinus tract or swelling. * Teeth indicated for extraction for orthodontic reasons. * Uncooperative children who could not be treated under local anesthesia.