@Bikhtiyar Saeed: Thank you for the kind words. I’m not sure I understand the difference. I place the rubber dam at the beginning, you place it after access. How’s my way more time consuming?! It should be equal time except that you place it later. If I have a very calcified, rotated root I may also wait and place it after access if I’m able to get adequate isolation. So, time is not the difference here as long as you are using the rubber dam throughout instrumentation and obturation you should be fine. Cheers!