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Revisiting the functionally generated path technique: is this an aid to predictable digital occlusal design? Part 2. The technique Tom Bereznicki Rohit Patel Megan Clark Dental Update 2024 49:6, 707-709.
Authors
TomBereznicki
BDS(Edin), MFDTEd, MFDSEng, MCGDent
Visiting Clinical Specialist Teacher, Department of Primary Dental Care, King's College London; Private Practice, Dawood & Tanner, Wimpole Street, London
The precision of the occlusal scheme is paramount to the production of a successful fixed restoration(s) and its long-term success. The provision of the correct occlusal scheme is one of the requirements when working conformatively, whether in analogue or digital format. Part 1 highlighted occlusal schemes that provide difficulties using established techniques in arriving at a predictable restoration requiring minimal occlusal adjustments chairside. Part 2 introduces the theory of the functionally generated path (FGP) technique. Two cases involving implant-retained restorations are used to highlight the benefit of adopting this technique into the digital workflow in the provision of occlusally precise restorations.
CPD/Clinical Relevance: This article describes the value of the functionally generated path technique, when working digitally, for recording the occlusion for implant-retained restorations.
Article
The authors show how marrying an old established technique with digital dentistry can provide an accurate occlusal scheme in cases where digital design alone may prove difficult, if not impossible. Many examples of these difficult occlusions and cases were outlined in Part 1 of this series.1 Although many of the steps here are shown in analogue form for clarity of presentation, most can also be delivered digitally: namely, scanning to give the definitive digital working model, design and fabrication of the milled titanium or zirconia abutment, printing the acrylic coping and scanning the final design of the analogue functionally generated stent to mill the final restoration. Once mastered, the technique is very quick clinically, and its predictability more than makes up for the additional visit required to carry out the recordings, as the fit appointment becomes routine, and the frustration of occlusal adjustments is reduced.
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