What key feature differentiates maxillary films from mandibular films when mounting dental radiographs?

The key feature that differentiates maxillary films from mandibular films is that maxillary molars have three roots. This characteristic is significant because it aids in the identification and proper mounting of dental radiographs. The roots of maxillary molars spread out more laterally, which is important for correlating the radiographs to the actual anatomy.

When interpreting radiographs, understanding the anatomy of the teeth helps the dental professional determine the position and orientation of the images. Recognizing that maxillary molars have three roots influences how the radiographs are viewed and mounted, as it aligns with the anatomical features of the patient’s dentition. This knowledge is essential for accurate diagnosis and treatment planning in dental practice.