A 30-year-old man presented with an acute left eye proptosis, pain, and decreased vision. He had been having a dental infection since 3 days. Orbital CT scan showed abscess in the left orbit. On dental X-ray a periapical radiolucency of the mandibular left-second molar was observed, and no obvious sinus involvement was noted. Intravenous antibiotic therapy did not lead to any significant improvement. Therefore, the patient underwent combined dental and orbital surgery to drain the abscess. Following the surgery, the patient’s clinical signs and symptoms resolved completely.