An Indirect Digital Technique to Transfer 3D Printed Casts to a Mechanical Articulator With Individual Sagittal Condylar Inclination Settings Using CBCT and Intraoral Scans. 2022

Shengtao Yang, and Bo Dong, and Qianqian Zhang, and Junying Li, and Quan Yuan, and Li Yue
Department of Dental Technology, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China.

With the widespread application of digital impression techniques in prosthetic dentistry, accurate intraoral scan mounting, and virtual articulator parameters setting as per patients' anatomic structures are essential for treatment planning and restoration fabrication, especially for complex rehabilitation cases; meanwhile, marginal fit checking, occlusal adjustment, and porcelain layering of restorations are also crucial procedures in all cases in which the analog procedure to mount maxillary arches on a mechanical articulator is still required. This technique article presents an indirect digital approach that can first achieve virtual intraoral scan mounting and sagittal condylar inclination value setting of an Artex virtual articulator based on bony structures provided by a single cone beam computed tomography scan. It then facilitates the transfer of virtually mounted intraoral scans from the virtual articulator to the matched Artex mechanical articulator by relating a digitally scanned mounting plate of the Artex mechanical articulator to the virtual articulator, printing the intraoral scan and mounting plate scan assembly, and then mounting the printed casts on the mechanical articulator based on the printed mounting plate. This technique eliminates the conventional facebow transfer and protrusive bite registration procedures and offers a straightforward approach for the seamless integration of virtual environments and analog workflows into clinical practice. It aids in the design of restorations that are harmonious with the mandibular movements and reduces chairside adjustment time.

UI MeSH Term Description Entries
D007574 Jaw Relation Record A registration of any positional relationship of the mandible in reference to the maxillae. These records may be any of the many vertical, horizontal, or orientation relations. (Jablonski, Illustrated Dictionary of Dentistry) Axiography,Bite Registration,Sirognathography,Record, Jaw Relation,Records, Jaw Relation,Bite Registrations,Jaw Relation Records,Registration, Bite,Registrations, Bite
D003725 Dental Articulators Mechanical devices that simulate the temporomandibular joints and jaws to which maxillary and mandibular casts are attached. The entire assembly attempts to reproduce the movements of the mandible and the various tooth-to-tooth relationships that accompany those movements. Articulators,Articulator, Dental,Articulators, Dental,Dental Articulator,Articulator
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D054894 Spiral Cone-Beam Computed Tomography Modality of computed tomography in which the patient is irradiated in a spiral path around the body with a cone or pyramid-shaped beam. CAT Scan, Spiral Cone-Beam,CT Scan, Spiral Cone-Beam,Spiral Volumetric CT,Tomography, Spiral Volumetric Computed,Helical Cone-Beam CT,Spiral Cone-Beam CAT Scan,Spiral Cone-Beam CT,Spiral Cone-Beam CT Scan,Spiral Cone-Beam Computer-Assisted Tomography,Spiral Cone-Beam Computerized Tomography,Spiral Volume CT,CAT Scan, Spiral Cone Beam,CT Scan, Spiral Cone Beam,CT, Helical Cone-Beam,CT, Spiral Cone-Beam,CT, Spiral Volume,CT, Spiral Volumetric,CTs, Spiral Volume,Cone-Beam CT, Helical,Cone-Beam CT, Spiral,Cone-Beam CTs, Helical,Helical Cone Beam CT,Spiral Cone Beam CAT Scan,Spiral Cone Beam CT,Spiral Cone Beam CT Scan,Spiral Cone Beam Computed Tomography,Spiral Cone Beam Computer Assisted Tomography,Spiral Cone Beam Computerized Tomography,Volume CT, Spiral,Volumetric CT, Spiral
D066330 Printing, Three-Dimensional Process for making, building or constructing a physical object from a three-dimensional digital model by laying down many successive thin layers of building material. 3-D Printing,3-Dimensional Printing,3D Printing,Three-Dimensional Printing,3 D Printing,3 Dimensional Printing,3-D Printings,3-Dimensional Printings,3D Printings,Printing, 3-D,Printing, 3-Dimensional,Printing, 3D,Printing, Three Dimensional,Printings, 3-D,Printings, 3-Dimensional,Printings, 3D,Printings, Three-Dimensional,Three Dimensional Printing,Three-Dimensional Printings

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