Microscopic root canal treatment is more than “taking a magnified look”｜證據鏈

Microscopic root canal treatment does more than magnify a tooth. Stable illumination and magnification must be combined with pre-operative imaging, interpretation of pulp-floor anatomy, ultrasonic tips and directed dentine removal before “guessing the orifice” can become an observable procedure that can be stopped and corrected. This platform is particularly useful when considering small structures that are easily missed, such as the second mesiobuccal canal of maxillary molars (MB2). However, “easier to see” and “proven to improve patient outcomes” are different questions. A 2015 Cochrane systematic review found no eligible randomised or quasi-randomised clinical trial comparing outcomes with and without magnification devices, so it could not determine their effect on treatment outcomes. Another systematic review and meta-analysis in an Indian population summarised MB2 detection proportions across different studies and methods. These between-study figures describe detection settings; they are not an equipment contest in the same patients and cannot prove that the microscope alone caused the differences.