| 摘要 |
<p>A 3D screen-like structure (3) is provided, which is made of x-ray impermeable materials and is provided with basic measuring units (2). When attached directly or indirectly to the gum astride the interdental fissure of two teeth at the cheek side or the tongue side in the oral cavity of a patient and parallel x-ray imaging is used, the interdental distance between two teeth can be measured on the x-ray images directly within the oral cavity of the patient, thus allowing the positioning of a microimplant to be determined immediately.</p> |
