“…18 Risk factors have been associated to pain, namely: the presence and amount of apical periodontitis, 12,19 preoperative sinus, 20 pulp necrosis, 10,19 spontaneous preoperative pain, 2,10,13,19 percussive preoperative pain, 21 number of treatment visits, 10,13 re-treatment, 22 tooth type, 12,13,19 interappointment pain, 12,13 post-preparation swelling, 12 gender, 12,19,23 and age. 2,24 The knowledge of those factors helps to control postoperative pain. However, the frequency and possible factors exclusively associated with postobturation pain in adolescent patients have been poorly investigated.…”