Detection of peri-implant bone defects with different radiographic techniques - a XXXX cadaver study.

@entity737 @entity1 @entity604 @entity92
OBJECTIVES: Two- and three-dimensional radiographic techniques are available to determine @entity737 -related @entity604 around dental implants. PURPOSE: To compare the performance of detecting different peri-implant bone defects in intraoral radiography (IR), panoramic radiography (PR), Cone Beam Computer Tomography (CBCT) and Computer Tomography (CT). MATERIAL AND METHODS: Six implants were inserted under ideal conditions into the lower jaw of an edentulous @entity1 cadaver. IR, PR, CBCT and CT were performed. Two-wall, three-wall and four-wall defects with 1  mm depth were artificially created around two of the implants (one anterior and one posterior), and radiographies were repeated. The identical set-up was used for 3-mm-deep bone defects. All images were presented to seven observers. Sensitivity (SN) and specificity (SP) were determined for each modality, @entity92 , and likelihood ratios were calculated. RESULTS: The highest sensitivity was found with IR and CBCT for 1  mm (0.67; 0.68) and 3-mm defects (0.81; 0.79). The highest specificity was found with IR for both defect depths (0.51). The best classification of defect type revealed PR for both 1-mm and 3-mm-deep defects. Both likelihood ratios (LR+ and LR-) were best for IR with 1-mm (1.37 and 0.65) and with 3-mm defects (1.65 and 0.37). CONCLUSIONS: IR should still be recommended as favourable method evaluating @entity604 around dental implants, while CT demonstrated the lowest performance in detecting peri-implant bone defects.
