Why Magnification in Endodontics Is Indispensable

An average molar has three to four root canals, sometimes more. Their diameters vary from 0.3 to 1.5 millimetres, and some lateral canals are even finer. With loupes at 2.5x magnification, many of these structures remain invisible. Only from 10x magnification are details revealed that determine the success or failure of the treatment.

Finding canal entrances is the first critical step. On the pulpal floor, they are often hidden under dentin overhangs or secondary dentin. With the dental microscope, you can identify the characteristic colour differences and surface structures that indicate a canal entrance. The fourth canal in the maxillary molar, the MB2, suddenly becomes detectable.

In revisions, the value of good optics is particularly evident. Why did the initial treatment fail? Is there an overlooked canal? A ledge formation? A fractured instrument? The microscope answers these questions and shows the path to the solution. The dual iris diaphragm increases the depth of field, allowing structures located at different levels to be sharply focused simultaneously.