Abstract:Germany SIRONA dental surface tomography X-ray machine is one of the important dental equipment and widely used
in clinical, because of its easy operation, wide range of inspection and low radiation dose. In this paper, a case of common starting
sensor error of Germany SIRONA dental surface tomography X-ray machine that was unable to locate and cannot pass self-inspection
was analyzed and examied, so as to provide reference experience for dental surface tomography X-ray machine. We judged that the
problem was spring wear off based on static test, execution test and lateral test, and the equipment ran normally after adjusting the
spring. This maintenance example is of great significance for routine maintenance and repair of dental curved tomography machine.