Influence of X-ray beam angulation on the radiographic detection of implant-abutment interface misfits: A quantitative in vitro analysis
JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1111/jopr.70178
- Dergi Adı: JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, EMBASE, MEDLINE, Natural Science Collection (ProQuest), Biological Science Database (ProQuest), Biomedical Reference Collection: Corporate Edition (EBSCO), Health Research Premium Collection (ProQuest)
- Ankara Üniversitesi Adresli: Evet
Özet
Purpose: This study evaluated the effect of periapical X-ray angulation on the diagnostic accuracy of detecting vertical misfits at the implant-abutment interface using Medentika Microcone dental implants (4.0 mm diameter, 11 mm length; internal conical connection). Materials and Methods: Standardized abutment-implant assemblies were tested using four polyvinyl chloride (PVC) spacer thicknesses (50, 100, 150, and 200 & micro;m) and 0 thickness as a control group. For each thickness group, 13 digital radiographs were taken at angles ranging from 0 degrees to +/- 30 degrees in 5 degrees increments. Vertical discrepancies were measured using calibrated CS Imaging Software. Each image was measured seven times for consistency by the same experienced radiology resident. Data were analyzed using the Shapiro-Wilk test for normality, followed by Kruskal-Wallis and Wilcoxon signed-rank tests. Results: Measurements across all PVC thickness groups demonstrated statistically significant differences (p < 0.05). In the 0-& micro;m group, minimal variability was observed across angulations except at +20 degrees to +25 degrees and -20 degrees to -25 degrees. The 50-& micro;m and 100-& micro;m groups showed significant reductions in vertical misfit between +15 degrees to +20 degrees and -15 degrees to -20 degrees. The 150-& micro;m and 200-& micro;m groups exhibited increased detectability, with significant differences in both positive and negative directions as the projection angle increased, specifically between +20 degrees and +25 degrees for the 150-& micro;m group and between +25 degrees to +30 degrees for the 200-& micro;m group. Conclusion: Within the limitations of this in vitro study, diagnostic performance varied with projection angulation and misfit magnitude. For the tested configurations, certain angulations (approximately 15 degrees-25 degrees) showed higher diagnostic performance metrics; however, these findings should not be interpreted as a clinical recommendation and require validation under clinical conditions.