Which film would be definitive for determining true root anatomy in a case of suspected root tip dilaceration?

The use of CBCT (Cone Beam Computed Tomography) films is highly effective for determining true root anatomy, particularly in cases of suspected root tip dilaceration. CBCT imaging provides a three-dimensional view of the tooth and surrounding structures, enabling clinicians to visualize complex root systems and assess the orientation and angulation of the root tips in detail. This technology allows for the identification of variations in root anatomy that cannot be accurately captured with traditional two-dimensional radiographs.

Periapical films, whether mesio or disto angulated, provide a two-dimensional representation which can sometimes distort spatial relationships and may not adequately reveal the complexity of the root's anatomy. An occlusal film also offers limited views and does not provide the comprehensive information needed to determine the true anatomy of dilacerated roots. Therefore, for suspected root tip dilacerations, the clarity and precision of CBCT films make them the most definitive choice for accurate assessment.