What does a periapical film reveal?

A periapical film is specifically designed to capture images of an individual tooth along with the surrounding bone and structures, including the apex, or the tip, of the tooth root. This type of radiograph is essential in assessing the health of the tooth and its supporting bone. It allows for the visualization of periapical lesions, abscesses, and other pathological changes at the root level, which are crucial for diagnosing dental issues.

The focus on the entire tooth, including the apex, is vital in endodontics—particularly when determining the need for root canal treatment or examining the condition of previously treated teeth. By capturing both the crown and root in one image, dental professionals can evaluate the overall condition of the tooth and surrounding area, making periapical films indispensable in clinical practice.

This specific capability is what distinguishes a periapical film from other types of dental radiographs, such as panoramic films—which show the entire jaw—or bitewing films—designed primarily for detecting interproximal caries and assessing the bone level between upper and lower teeth.