Influence Of Different Endocrown Preparations On The Accuracy Of Multiple Intraoral Scanners-An In-Vitro Study | ||||
| Al-Azhar Journal of Dental Science | ||||
| Article 3, Volume 27, Issue 1, January 2024, Page 17-25 PDF (788.19 K) | ||||
| Document Type: Review Article | ||||
| DOI: 10.21608/ajdsm.2022.130896.1329 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Ahmed Samir  1; Ahmad Yousri El-Kouedi 2; Hssein Ramadan Mohammed 3
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| 1Crown and bridge department , faculty of oral and dental medicine for Boys, Al-Azhar University, Cairo, Egypt | ||||
| 2Crown and Bridge, Faculty of Dental Medicine, Boys, Cairo | ||||
| 3Department of Crown and Bridge, Faculty of Dental Medicine, Al-Azhar University in Cairo-Egypt. | ||||
| Abstract | ||||
| Objectives: This study was made to determine the accuracy of 3 intraoral scanners (IOS) on different Endocrown preparations. Methods: Four Endocrown preparations with two internal angulations (6° & 10°) and two depths (3mm & 5 mm) were made on an acrylic typodont. Reference scans were taken with a reference scanner (InEos X5) and saved in a STL format then each IOS (Trios, Omnicam, and My crown) scanned each preparation 8 times. The STL files obtained were compared to the reference scans for measuring (trueness) and within each test group (precision). A reverse engineering software was employed to measure the accuracy of the IOS. Results: Trueness: the best scanner was the Trios scanner (25.13±3.89µ) followed by My crown (37.24±6.8µ) then Omnicam (39.31±6.08µ). There was a statistically significant difference in total trueness of the Trios scanner compared to both My Crown and Omnicam. The 10° (30.87±6.74µ) was significantly higher in trueness than 6° (36.9±8.98µ). The 5mm depth (31.3±6.56µ) was significantly higher in trueness than 3mm (36.48±9.37µ). Precision: the best scanner was the Trios scanner (18.16±4.53µ) followed by Omnicam (26.21±5.24µ) then My crown (30.14±9.92µ). No significant difference in precision between 6° (24.08±8.12µ) and 10° (25.21±9.09µ). Five mm depth (20.24±5.19µ) was significantly higher in precision than 3mm (28.11±9.2µ) Conclusion: Trios scanner shows better trueness and precision than Omnicam and My crown scanners. Endocrown scans with internal angulations 10° show more accurate results than those with 6° scans, and 5mm axial wall showed more accuracy than 3mm axial wall scans. | ||||
| Keywords | ||||
| Intraoral Scanner; trueness; precision; CAD/CAM; Endocrown | ||||
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