There are several types of dental X-rays, including bitewing, periapical, panoramic, and cone-beam computed tomography (CBCT). Bitewing X-rays capture the upper and lower back teeth in a single image, helping detect cavities and assess the fit of dental restorations. Periapical X-rays focus on individual teeth, showcasing the entire tooth from crown to root and the surrounding bone. Panoramic X-rays provide a broad view of the entire mouth, jaws, and surrounding structures, offering insights into overall oral health.