Haptic simulation framework for determining virtual dental occlusion

Wu, Wen; Chen, Hui; Cen, Yuhai; Hong, Yang; Khambay, Balvinder; Heng, Pheng‐Ann

doi:10.1007/s11548-016-1475-3

Cited by 16 publications

(10 citation statements)

References 25 publications

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“…The virtual occlusion tool does not give physical feedback and the surgeon is not able to 'feel' the models. A virtual occlu-sion tool using a haptic feedback mechanism would allow the surgeon to 'feel' the dental models and might enable the surgeon to appropriately build an occlusion 25 . Another approach is a fully automated tool to build the occlusion as presented by Deng et al 31 .…”

Section: Discussionmentioning

confidence: 99%

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Virtual occlusion in orthognathic surgery

Baan

Meggelen

Verhulst

et al. 2021

International Journal of Oral and Maxillofacial Surgery

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The aim of this retrospective study was to determine whether a virtually created occlusion is as accurate as a conventionally created occlusion. Seventeen orthognathic patients were included in the study, which was conducted in a university clinic. Plaster cast models were obtained and digitized. Two experienced observers created the conventional (gold standard) and virtual occlusion to assess inter-observer variability. One observer created the conventional and virtual occlusion a second time to assess the intra-observer variability. The criterion for accepting the virtual occlusion was that the difference between the gold standard and the virtual occlusion was not larger than the intra-observer variability for the gold standard. A non-parametric Kruskal-Wallis H test was performed to detect statistically significant differences between the intra-and inter-observer groups for both the conventional and virtual occlusion. No statistically significant differences were found between the different groups. The difference between the conventional and virtual occlusion group was 0.20 mm larger than the intra-observer variability of the gold standard. The virtual occlusion tool presented here can be utilized in daily clinical practice and makes the use of physical dental models redundant.

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Section: Discussionmentioning

confidence: 99%

“…All patient data were anonymized prior to analysis. The sample size calculation for 95% power and a 5% significance level was performed using G*Power (Dusseldorf, Germany) 24 with the parameters reported by Wu et al 25 . Based on these parameters, the required sample size was a population of 17 patients.…”

Section: Patientsmentioning

confidence: 99%

Virtual occlusion in orthognathic surgery

Baan

Meggelen

Verhulst

et al. 2021

International Journal of Oral and Maxillofacial Surgery

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“…There are reports on digital dental occlusion. [2, 3] However, they either require moving the models together manually or are computationally inefficient, and thus have not been used clinically. In the past, we have developed a method of digitally articulating the upper and lower dental models into maximum intercuspation (MI).…”

Section: Introductionmentioning

confidence: 99%

An Automatic Approach to Reestablish Final Dental Occlusion for 1-Piece Maxillary Orthognathic Surgery

Deng

Yuan

Wong

et al. 2019

Lecture Notes in Computer Science

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Accurately establishing a desired final dental occlusion of the upper and lower teeth is a critical step in orthognathic surgical planning. Traditionally, the final occlusion is established by hand-articulating the stone dental models. However, this process is inappropriate to digitally plan the orthognathic surgery using computer-aided surgical simulation. To date, there is no effective method of digitally establishing final occlusion. We propose a 3-stage approach to digitally and automatically establish a desired final dental occlusion for 1-piece maxillary orthognathic surgery, including: 1) to automatically extract points of interest and four key teeth landmarks from the occlusal surfaces; 2) to align the upper and lower teeth to a clinically desired Midline-Canine-Molar relationship by minimization of sum of distances between them; and 3) to finely align the upper and lower teeth to a maximum contact with the constraints of collision and clinical criteria. The proposed method was evaluated qualitatively and quantitatively and proved to be effective and accurate.

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“…It is used to improve the realism in simulators and is already available in training for specific surgical procedures [ 15 ]. Haptics have the potential to simplify preoperative planning by giving the surgeon virtual tools that are similar to the procedures in the operating theatre, namely the sensation of the fit of two bone fragments or the dental occlusion [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of in-house, haptic assisted surgical planning for virtual reduction of complex mandibular fractures

et al. 2021

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Purpose The management of complex mandible fractures, i.e. severely comminuted or fractures of edentulous/atrophic mandibles, can be challenging. This is due to the three-dimensional loss of bone, which limits the possibility for accurate anatomic reduction. Virtual surgery planning (VSP) can provide improved accuracy and shorter operating times, but is often not employed for trauma cases because of time constraints and complex user interfaces limited to two-dimensional interaction with three-dimensional data. Methods In this study, we evaluate the accuracy, precision, and time efficiency of the haptic assisted surgery planning system (HASP), an in-house VSP system that supports stereo graphics, six degrees-of-freedom input, and haptics to improve the surgical planning. Three operators performed planning in HASP on computed tomography (CT) and cone beam computed tomography (CBCT) images of a plastic skull model and on twelve retrospective cases with complex mandible fractures. Results The results show an accuracy and reproducibility of less than 2 mm when using HASP for virtual fracture reduction, with an average planning time of 15 min including time for segmentation in the software BoneSplit. Conclusion This study presents an in-house haptic assisted planning tool for cranio-maxillofacial surgery with high usability that can be used for preoperative planning and evaluation of complex mandible fractures.

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Haptic simulation framework for determining virtual dental occlusion

Cited by 16 publications

References 25 publications

Virtual occlusion in orthognathic surgery

Virtual occlusion in orthognathic surgery

An Automatic Approach to Reestablish Final Dental Occlusion for 1-Piece Maxillary Orthognathic Surgery

Evaluation of in-house, haptic assisted surgical planning for virtual reduction of complex mandibular fractures

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