Accuracy and precision of 3D-printed implant surgical guides with different implant systems: An in vitro study

2020 ◽  
Vol 123 (6) ◽  
pp. 821-828 ◽  
Author(s):  
Matthew Yeung ◽  
Aous Abdulmajeed ◽  
Caroline K. Carrico ◽  
George R. Deeb ◽  
Sompop Bencharit
2019 ◽  
Vol 30 (S19) ◽  
pp. 519-519 ◽  
Author(s):  
Valentin Hromadnik ◽  
Stefano Pieralli ◽  
Benedikt Spies ◽  
Florian Beuer ◽  
Christian Wesemann

2021 ◽  
Vol 10 (3) ◽  
pp. 391
Author(s):  
Rani D’haese ◽  
Tom Vrombaut ◽  
Geert Hommez ◽  
Hugo De Bruyn ◽  
Stefan Vandeweghe

Purpose: The aim of this in vitro study is to evaluate the accuracy of implant position using mucosal supported surgical guides, produced by a desktop 3D printer. Methods: Ninety implants (Bone Level Roxolid, 4.1 mm × 10 mm, Straumann, Villerat, Switzerland) were placed in fifteen mandibular casts (Bonemodels, Castellón de la Plana, Spain). A mucosa-supported guide was designed and printed for each of the fifteen casts. After placement of the implants, the location was assessed by scanning the cast and scan bodies with an intra-oral scanner (Primescan®, Dentsply Sirona, York, PA, USA). Two comparisons were performed: one with the mucosa as a reference, and one where only the implants were aligned. Angular, coronal and apical deviations were measured. Results: The mean implant angular deviation for tissue and implant alignment were 3.25° (SD 1.69°) and 2.39° (SD 1.42°) respectively, the coronal deviation 0.82 mm (SD 0.43 mm) and 0.45 mm (SD 0.31 mm) and the apical deviation 0.99 mm (SD 0.45 mm) and 0.71 mm (SD 0.43 mm). All three variables were significantly different between the tissue and implant alignment (p < 0.001). Conclusion: Based on the results of this study, we conclude that guided implant surgery using desktop 3D printed mucosa-supported guides has a clinically acceptable level of accuracy. The resilience of the mucosa has a negative effect on the guide stability and increases the deviation in implant position.


1985 ◽  
Vol 30 (4) ◽  
pp. 11046J ◽  
Author(s):  
Yale H. Caplan ◽  
David T. Yohman ◽  
John A. Schaefer

2020 ◽  
Vol 71 (1) ◽  
pp. 405-410
Author(s):  
Kamel Earar ◽  
Alexandru Andrei Iliescu ◽  
Gabriela Popa ◽  
Andrei Iliescu ◽  
Ioana Rudnic ◽  
...  

CAD/CAM procedures are increasingly used to the manufacturing of 3D-designed PMMA interim dental crowns. The aim of this in vitro study was to compare the internal fit of interim PMMA crowns fabricated by subtractive versus additive CAD/CAM procedures. Starting from a Co-Cr CAD/CAM master abutment model, 20 standardized dental models of dental stone were done by double impression technique. Subsequently two groups of interim PMMA interim crowns, each of them having 10 specimens, were CAM obtained either by milling or 3D printing, using Exocad software package, milling machine Rolland DWX-50, and the 3D printer MoonRay S 100 respectively. An electronic digital caliper Powerfix Profi+ was used for measurements of the chrome cobalt abutment and crowns inner diameter in 4 directions (mesial-distal gingival, buccal-lingual gingival, mesial-distal occlusal, and buccal-lingual occlusal). The null hypothesis that the internal dimensional accuracy of interim PMMA crowns fabricated by DLP additive method would not be different compared to those obtained by milling procedure was rejected since the printed PMMA interim crowns were more accurate. This study concluded that the milled PMMA interim crowns show larger internal dimensional variations than the 3D printed ones. However, the fit variation among interim crowns fabricated by both procedures was statistically non significant, so that both CAM technologies may be equally used in manufacturing process.


2018 ◽  
Vol 199 ◽  
pp. 593-602 ◽  
Author(s):  
Claudio Intini ◽  
Lisa Elviri ◽  
Jaydee Cabral ◽  
Sonya Mros ◽  
Carlo Bergonzi ◽  
...  

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