Terrifi c! One of my favorite things in dentistry is watching the lesion shrink over time and being able to show the patient. ■ Very nice work. Points Day Man Member Since: 03/06/09 Post: 2 of 97 1/25/2016 Dr2Fretired Member Since: 08/02/07 Post: 4 of 97 out the importance of history when evaluating endodontically treated teeth. I wonder how many dentists, when looking at some of your postoperative fi lms that show apical scaring or healing lesions, would want to jump in and re-treat based on a single radiograph when presenting for the fi rst time to a new dentist. ■ 1/25/2016 Thanks for the responses. almunk Member Since: 12/17/05 Posts: 7, 8 and 10 of 97 And contrary to popular technique, none of these large lesion cases was treated with interim calcium hydroxide dressing. They were either done in one appointment if time allowed, or two with empty canals between appointments. And half the time, I just put plain cotton in the chamber because I don't like the smell of cresatin or formocresol. I do irrigate with bleach. Here are a couple more unusual cases that didn't fully heal. Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 1: 10 mm diameter lesion. Present for 40 years, according to the patient, who had been hit by his brother's elbow. Tough to heal these. This is my fi nish. Fig. 2: Three-year follow-up. Lesion down to 4 mm diameter. Asymptomatic; I think I'll leave it alone. FREE FACTS, circle 8 on card dentaltown.com \\ SEPTEMBER 2021 35http://flowdental.com http://www.dentaltown.com