An apparatus for detecting bone defects includes a detecting device and a dental abutment wirelessly connected to each other. The dental abutment includes a vibration component, at least one vibration excitation transducer, and at least one response sensor. The vibration component is used for being inserted in a dental implant. The vibration excitation transducer is disposed at one side of the vibration component for exciting the vibration component to vibrate, and the vibration excitation transducer is spatially separated from the vibration component. The response sensor is disposed at a side of the to vibration component opposite to the vibration excitation transducer for detecting the vibration of the vibration component.
