A technique for fabricating an additively manufactured Kois deprogrammer is described from the initial patient data collection with an intraoral scanner to the 3D printing methods to fabricate the device. The incorporation of digital technologies for manufacturing a Kois deprogrammer provides new clinical and manufacturing tools, providing more efficient and less time-consuming design and manufacturing techniques than conventional techniques while maintaining conventional prosthodontic concepts.
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| http://dx.doi.org/10.1016/j.prosdent.2022.04.034 | DOI Listing |
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Discrepancies of centric occlusion located by using a conventional method and four intraoral scanners combined with a computer-aided design program: A pilot investigation.
J Prosthet Dent
July 2024
Founder and Director, Kois Center, Seattle, Wash.; Affiliate Professor, Graduate Prosthodontics, Department of Restorative Dentistry, University of Washington, Seattle, Wash.; and Private practice, Seattle.
Statement Of Problem: Intraoral scanners (IOSs) can be used to record the maxillomandibular relationship at centric relation (CR). The articulated digital scans can be imported into a dental computer-aided design (CAD) program and used to locate centric occlusion (CO); however, the accuracy of the CO recorded by using IOSs and a dental CAD program remains unknown.
Purpose: The purpose of this clinical study was to compare the position of the CO located by using a conventional method and 4 IOSs combined with a dental CAD program.
Locating centric occlusion by using intraoral scanners and open access or dental computer-aided design programs: A dental technique.
J Prosthet Dent
June 2024
Founder and Director, Kois Center, Seattle, Wash.; Affiliate Professor, Graduate Prosthodontics, Department of Restorative Dentistry, University of Washington, Seattle, Wash.; and Private practice, Seattle, Wash.
When using conventional methods, centric occlusion (CO) can be determined on conventional gypsum casts that are mounted in an analog articulator at centric relation (CR). In the digital environment, intraoral scanners (IOSs) can be used to record maxillary and mandibular scans articulated in CR. However, a digital protocol to locate the CO on articulated intraoral digital scans at CR by using computer-aided design (CAD) programs is needed.
View Article and Find Full Text PDFImplementing an optical jaw tracking system to locate centric occlusion: A dental technique.
J Prosthet Dent
January 2024
Founder and Director, Kois Center, Seattle, Wash; Affiliate Professor, Graduate Prosthodontics, Department of Restorative Dentistry, University of Washington, Seattle, Wash; and Private practice, Seattle, Wash.
Optical jaw tracking systems are designed to record the static maxillomandibular relationship and the mandibular motion of a patient, including excursive movements and mastication pattern. This digital data acquisition technology can be integrated into diagnostic and treatment planning procedures, as well as into designing dental prostheses. A step-by-step protocol to record a patient's digital data, including the repeatable reference position of the jaw or centric relation, by using an intraoral scanner, Kois deprogrammer, and optical jaw tracking system is described.
View Article and Find Full Text PDFMaxillary occlusal device designed with an anterior platform for guiding the occlusal adjustments during the delivery appointment: A dental protocol.
J Esthet Restor Dent
July 2023
Kois Center, Seattle, Washington, USA.
Objective: To describe a technique for fabricating an additively manufactured maxillary occlusal device using a complete digital workflow.
Clinical Considerations: The maxillary occlusal device design may include an anterior platform to guide the positioning of the mandible in a reproducible position for facilitating the delivery procedure.
Conclusions: The described technique provides a more efficient and less time-consuming method for designing and manufacturing a printed occlusal device, when compared with conventional fabrication techniques.
Accuracy of the maxillomandibular relationship at centric relation position recorded by using 3 different intraoral scanners with or without an optical jaw tracking system: An in vivo pilot study.
J Dent
May 2023
Professor, Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain.
Article Synopsis
- The study aimed to evaluate the accuracy of maxillomandibular relationships at centric relation using three different intraoral scanners, both with and without optical jaw tracking systems.
- Seven groups were examined, including a control group using traditional methods, and three groups for each scanner type (Trios4, Itero, i700) with corresponding tracking systems.
- Results showed significant differences in accuracy, with the Modjaw-i700, Modjaw-iTero, Modjaw-Trios4, and i700 groups achieving the highest levels of trueness and precision, indicating superior performance.
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