A．检查腮腺导管前部结石、多生牙定位、外伤骨折错位、颌骨肿瘤膨胀情况以及异物定位等。B．检查颌下腺导管前部结石……

单项选择题Which of the following imaging techniques does not use X rays

单项选择题Which of the following is considered to be an extraoral technique

单项选择题Which one of the following may appear on a periapical radiograph of the upper third molar area

单项选择题Interproximal (bitewing) radiographs are most sensitive in detecting caries on which tooth surface

单项选择题In which of the following techniques may a patient be asked to hold the film packet during exposure