Final answer:
The technique commonly used to x-ray mandibular molars is the Parallel technique, which involves directing the x-ray beam perpendicular to the film and tooth axis for clear image capture.
Step-by-step explanation:
The technique commonly used to x-ray mandibular molars is the Parallel technique.
In this technique, the x-ray beam is directed perpendicular to the film and the long axis of the tooth, allowing for a clear image of the entire tooth structure.
The use of the Parallel technique ensures accurate diagnosis and treatment planning for dental procedures involving mandibular molars.