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International Poster Journal of Dentistry and Oral Medicine
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Int Poster J Dent Oral Med 16 (2014), CAMLOG     5. Aug. 2014
Int Poster J Dent Oral Med 16 (2014), CAMLOG  (05.08.2014)

Supplement, Poster 790, Language: English


Acrylic Customized X-Ray Positioning Stent for Prospective Bone Level Analysis in Long-Term Clinical Implant Studies
Messias, Ana / Rocha, Salomão / Tondela, João / Reis, Rita / Nicolau, Pedro / Guerra, Fernando
Background: One of the greatest challenges in implant clinical trials is the correct appraisal of bone levels throughout the trial span. This poster describes a technique to produce individualized X-ray positioning devices for obtaining optimally projected intraoral radiographs of dental implants with long term stability.
Materials and Methods: An X-ray positioning device was built for Gendex® Visualix® eHD sensor, using the Dentsply rinn XCP-DS® system individualized by the incorporation of the bite piece within an acrylic stent to perform successive standardized radiographs to patients. X-ray tube stabilization was achieved with polivinylsiloxane. Series of 3 radiographs were taken to each patient in different moments. Specific linear measurements as the implant diameter (mesio-distal width) and the height between consecutive threads (thread pitch) were made using the software Image J 1.46r to all radiographs to determine the reproducibility and accuracy of the procedure. Image corregistration was also performed on every pair of radiographs.
Results: The intra-class correlation coefficient for the mesio-distal width was 0.964 [(0.920 - 0.986) 95% CI] (p < 0.01) and 0.990 [(0.976 - 0.996) 95% CI] (p < 0.01) for the thread pitch.
Conclusion: The customized sensor holder produced images proper for radiographic examination of dental implants in different moments, allowing the reduction of radiation dose given to the patient.

Keywords: implant, radiovisiography, reproductibility, accuracy, corregistration

Conference/Exhibition:
5th International CAMLOG Congress
26.-28. June 2014
Valencia, Spain