Summary:
Purpose: to correlate between radiographic size of the lesion , apical resection and retrograde filling to long-term success to periapical surgery
Materials/Methods:
• N : 235 patients and 333teeth were included in this study ( 176 in the maxilla and 157 in the mandible )
•Inclusion criteria :
1- teeth with apicectomies and ultrasound preparation followed by amalgam retrograde filling
•Follow up duration at least 1 year after surgery and up to 10 years
•Before the surgery , they measured the size of the periapical lesion (by using 3X magnifying glass )
Most highlighted Results:
-The mean maximum diameter of the periapical lesion was 7.4 mm and the minimum diameter was 5 mm
-The mean resection area was 6.48 mm2; the mean height of resection was 2.7 mm and the mean base was 2.4 mm
-The mean area of the retrograde fillings was 3.05 mm2.The mean height was 2.25 mm and the mean width was 1.1 mm
-The prognosis of periapical surgery improved with smaller periapical lesions and lesser apical resection ( less than 5 ml) while the dimension of retrograde filling is not related to treatment success or failure
-The maxillary incisors and canine teeth had the best prognosis; the mandibular incisors and canine teeth had the worst
Clinical significance:
• Dimension of apical resection should be conservative in order to have better prognosis