<prompt> Which of the following, if left untreated is most likely to result in periapical lesion?Internal resorptionFocal reversible pulpitisAcute suppurative pulpitisChronic hyperplastic pulpitis  <response>: Acute pulpitis may result in formation of acute apical abscess which inturn may result in periapical granuloma or cyst and some times ending up in osteomyelitis. 