Aim: To determine the incidence of flare-up and the effect of age, gender, visit type, treatment duration, preoperative pain and intraoperative pain on flare-up in Nigerian adults.
Materials and methods: A total of 175 participants, aged 18 to 60 years with a necrotic central incisor, with or without preoperative pain, participated. They received postoperative paracetamol tablets and were asked to report back if unbearable pain/swelling developed.
Results: A 10% flare-up rate was recorded, while none of the studied factors had a significant relationship with flare-up.
Conclusion: The relationships between flare-up and studied related factors were not proven.
Clinical significance: Age, gender, visit type, treatment duration, preoperative pain and intraoperative pain have no effect on flare-up incidence.