Three-dimensional accuracy of virtual planning in orthognathic surgery

Teixeira, Andressa Otranto de Britto; Almeida, Marco Antônio de; Almeida, Rhita Cristina Cunha; Maués, Caroline Pelagio Raick; Pimentel, Thaís; Ribeiro, Danilo Passeado Branco; Medeiros, Paulo José de; Quintão, Cátia Cardoso Abdo; Carvalho, Felipe

doi:10.1016/j.ajodo.2019.09.023

Cited by 20 publications

(7 citation statements)

References 41 publications

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“…It can be seen from Figure 2 that the biggest feature of the visual sensor is high integration and modular function and conforms to industrial characteristics [13]. It integrates light source, camera, image processor, standard control and communication interface, etc., and it can easily realize communication with PC, PLC, and other equipment [14]. Sensor technology is an important part of realizing testing and automatic control.…”

Section: Smart Visionmentioning

confidence: 99%

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3D Kinematic Analysis of Intelligent Vision Sensor Image in Football Training

Luo

2021

Journal of Sensors

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With its advantages of high precision, noncontact, and high intelligence, intelligent visual sensor detection technology meets the requirements for online detection of motion status and intelligent recognition of motion images during sports activities, and its applications are becoming more and more extensive. In order to deeply explore the feasibility of using intelligent vision sensor technology to analyze the three-dimensional action of football, this article uses algorithm analysis method, technology summary method, and physical assembly method, collects samples, analyzes the motion model, streamlines the algorithm, and then creates a model based on intelligent visual sensor technology that can analyze the three-dimensional movement in football training. After the experimental objects are selected, the model is established in the ADM environment. All athletes do a uniform motion, the standard input motion speed is 5 m/s, they all move in the opposite direction relative to their respective coordinate axes, and the motion time is 6 seconds. The results show that the movement curves of the athletes in the three coordinate axis directions are basically the same. When the exercise time is 6 seconds, the coordinate values of the athletes on the three coordinate axes are all 0.992 m. We set six intensities in the experiment: 5%, 15%, 25%, 35%, 45%, and 55%. It can be found that as the noise intensity increases from 5% to 45%, the estimation error gradually increases, but as a whole, it is still at a relatively small level. It shows that the algorithm in this paper still has practical significance. It is basically realized that under the guidance of intelligent vision sensor technology, a model can be designed to successfully and efficiently analyze the three-dimensional movement pattern in training.

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Section: Smart Visionmentioning

confidence: 99%

“…In the formula, x ′ represents the target. Substituting formula (14) into formula (12), the dual function of advanced algorithms is called…”

Section: Journal Of Sensorsmentioning

confidence: 99%

3D Kinematic Analysis of Intelligent Vision Sensor Image in Football Training

Luo

2021

Journal of Sensors

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“…Finally, through double checking of wafers and customized titanium plates, the maxilla and mandible were precisely positioned and fixed at the planned position, thereby stably maintaining the occlusion after surgery. 20,21 All 8 patients included in this study were prepared for (modified) MMA through 3D virtual surgery, CAD/CAM, and 3D printing technologies and then operated. None of the patients had complications such as open bite, and none of the patients who had surgery to maintain occlusion needed additional orthodontic treatment.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, through the use of CAD/CAM and 3D printing technologies, it was possible to design a plate in an area with excellent bone quality and to adjust the plate thickness arbitrarily, and to manufacture a wafer by minimizing the error that occurred during the drilling process. Finally, through double checking of wafers and customized titanium plates, the maxilla and mandible were precisely positioned and fixed at the planned position, thereby stably maintaining the occlusion after surgery 20,21…”

Section: Discussionmentioning

confidence: 99%

The Efficacy of 3D Virtual Surgery, CAD/CAM, and 3D Printing Technology for Maxillomandibular Advancement in Obstructive Sleep Apnea Patients

Jeong

et al. 2023

Journal of Craniofacial Surgery

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cellular subtype. Another classification involves cellular morphology. The 2 patterns of cell morphology are Antoni A and Antoni B. In Antoni A, spindle cells are arranged in "interlacing cords, whorls, or palisades," whereas Antoni B is characterized by "stellate cells, with a mucoid stroma." 1 Treatment of orbital schwannomas is mainly surgical. The surgical approach differs depending on the localization of the tumor 1,4 and may occasionally require an interdisciplinary approach between ophthalmology, otorhinolaryngology, and neurosurgery. Surgical excision is considered a definitive treatment, with recurrence rates being very low. 4,7 In our case, we opted for a superior orbitotomy through a lid-split incision. This approach provided us adequate visualization of the schwannoma, which was in the central, anterior orbit. It also allowed an excellent view of the bony defect of orbital roof in the event a reconstruction was needed. Though rare, potential risks unique to this approach are those involving the eyelid margin, including notching, trichiasis, and irregular contour.We believe the patient's acute presentation of symptomatic diplopia is explained by the intralesional hemorrhage seen on MRI, which may have increased the lesion's size abruptly. It is interesting to note the absence of lid retraction in the patient's postoperative period despite having underwent 2 levator palpebrae resections; we hypothesize that the muscle was mechanically stretched by the tumor throughout the years.We believe our case is unique, given the patient's clinical course as well as the surgical approach through vertical lid-split incision technique. The intraoperative view of the defect in the orbital roof was equally special. We hope this report serves as a reminder to retain diagnostic skepticism in the face of recurrent ptosis and to consider vertical lid-split approach for anterior lesions of the orbit.

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“…A new technique by computer simulation, named virtual surgical planning (VSP), which appeared on the market, has reduced the accumulation errors and the labor-intensive processes planning [23][24][25][26]. The VSP technique is a pure computer simulation method, which simulates virtual midface and mandible osteotomy and repositions the segment parts to new positions according to the cephalometry meta-analysis and symmetry structure.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Asymmetry Assessment between Virtual and Mixed Reality Planning for Orthognathic Surgery—A Retrospective Study

2021

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Orthognathic surgical planning compromises three clinical needs: occlusal balancing, symmetry, and harmony, which may result in multiple outcomes. Facial symmetry is the ultimate goal for patients and practitioners. Pure virtual planning and mixed reality planning were two innovative technologies in clinical practices compared to conventional model surgery used for decades. We proposed quantitative asymmetry assessment methods in both mandibular contour (in 2D) and a midface and mandible relationship in 3D. A computerized optimal symmetry plane, being the median plane, was applied in both planning methods. In the 3D asymmetry assessment between two planning methods, the deviation angle and deviation distance between midface and mandible were within 2° and 1.5 mm, respectively. There was no significant difference, except the symmetry index of the anterior deviation angle between the virtual and mixed reality planning in the 3D asymmetry assessment. In the mandible contour assessment, there was no significant difference between the virtual and mixed reality planning in asymmetry assessment in the frontal and frontal downward inclined views. Quantitative outcomes in 3D asymmetry indices showed that mixed reality planning was slightly more symmetric than virtual planning, with the opposite in 2D contouring.

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Three-dimensional accuracy of virtual planning in orthognathic surgery

Cited by 20 publications

References 41 publications

3D Kinematic Analysis of Intelligent Vision Sensor Image in Football Training

3D Kinematic Analysis of Intelligent Vision Sensor Image in Football Training

The Efficacy of 3D Virtual Surgery, CAD/CAM, and 3D Printing Technology for Maxillomandibular Advancement in Obstructive Sleep Apnea Patients

Quantitative Asymmetry Assessment between Virtual and Mixed Reality Planning for Orthognathic Surgery—A Retrospective Study

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