Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla

10.3791/62489 ◽  
2021 ◽  
Author(s):  
Yihan Shen ◽  
Qinggang Dai ◽  
Baoxin Tao ◽  
Wei Huang ◽  
Feng Wang ◽  
...  
Keyword(s):  
Real Time ◽  
Navigation System ◽  
Time Dynamic ◽  
Implant Placement ◽  
Atrophic Maxilla ◽  
Dynamic Navigation ◽  
Zygomatic Implant

Application of Real-Time Surgical Navigation for Zygomatic Implant Insertion in Patients With Severely Atrophic Maxilla

2018 ◽  
Vol 76 (1) ◽  
pp. 80-87 ◽  
Author(s):  
Feng Wang ◽  
Michael M. Bornstein ◽  
Kuofeng Hung ◽  
Shengchi Fan ◽  
Xiaojun Chen ◽  
...  
Keyword(s):  
Real Time ◽  
Surgical Navigation ◽  
Atrophic Maxilla ◽  
Zygomatic Implant

scholarly journals Research on BeiDou Satellite Positioning Algorithm Based on GPRS Technology

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Li Yang ◽  
Yunhan Zhang ◽  
Haote Ruan
Keyword(s):  
Real Time ◽  
Navigation System ◽  
Satellite Navigation ◽  
Positioning Systems ◽  
Time Dynamic ◽  
Satellite Navigation System ◽  
Satellite Positioning ◽  
Error Elimination ◽  
Wireless Module ◽  
Positioning Algorithm

The BeiDou Satellite Navigation System of China can provide users with high precision, as well as all-weather and real-time positioning and navigation information. It can be widely used in many applications. However, new challenges appear with the expansion of the 5G communication system. To eradicate or weaken the influence of various errors in BeiDou positioning, a BeiDou satellite positioning algorithm based on GPRS technology is proposed. According to the principles of the BeiDou Satellite navigation system, the navigation and positioning data are obtained and useful information are extracted and sent to the communication network through the wireless module. The error is corrected by establishing a real-time kinematic (RTK) mathematical model, and the pseudorange is calculated by carrier phase to further eliminate the relativistic and multipath errors. Based on the results of error elimination, the BeiDou satellite positioning algorithm is improved and the positioning error is corrected. The experimental results show that the positioning accuracy and efficiency of the algorithm can meet the actual needs of real-time dynamic positioning systems.

Real-Time Image-Guided Navigation in the Management of Alveolar Cleft Repair

2021 ◽  
pp. 105566562110577
Author(s):  
Yuying Zhang ◽  
Jiawei Dai ◽  
Xiazhou Fu ◽  
Jiegang Yang ◽  
Yuchuan Fu ◽  
...  
Keyword(s):  
Real Time ◽  
Navigation System ◽  
Preoperative Planning ◽  
Surgical Simulation ◽  
Surgical Navigation ◽  
Computer Assisted ◽  
Alignment Procedure ◽  
Alveolar Cleft ◽  
Image Guided ◽  
Dynamic Navigation

Objectives: To present the use of dynamic navigation system in the repair of alveolar cleft. Patients and Participants: A total of three non-syndromic patients with unilateral alveolar cleft were involved in this study. Real-time computer-aided navigation were used to achieve restoration and reconstruction with standardized surgical technique. Methods: With the individual virtual 3-dimensional (3-D) modeling based on computed tomography (CT) data, preoperative planning and surgical simulation were carried out with the navigation system. During preoperative virtual planning, the defect volume or the quantity of graft is directly assessed at the surgical region. With the use of this system, the gingival periosteum flap incision can be tracked in real-time, and the bone graft can be navigated under the guidance of the 3-D views until it matches the preoperatively planned position. Results: Three patients with alveolar cleft were successfully performed under navigation guidance. Through the model alignment procedure, accurate matches between the actual intraoperative position and the CT images were achieved within the systematic error of 0.3 mm. The grafted bone was implanted according to the preoperative plan with the aid of instrument- and probe-based navigation. All the patients were healed well without serious complications. Conclusions: These findings suggest that image-guided surgical navigation, including preoperative planning, surgical simulation, postoperative assessment, and computer-assisted navigation was feasible and yielded good clinical outcomes. Clinical relevance: This dynamic navigation could be proved to be a valuable option for this complicated surgical procedure in the management of alveolar cleft repair.

Accuracy analysis of free-handed implant placement compared to a dynamic navigation system

2019 ◽  
Vol 16 (2) ◽  
pp. 24-39
Author(s):  
Robert William Emery ◽  
Rossano Vinícius Dala Rosa Silva ◽  
Breno Monteiro Tavares ◽  
Ali Sheikh ◽  
Andre Alberto Camara Puppin
Keyword(s):  
Navigation System ◽  
Accuracy Analysis ◽  
Implant Placement ◽  
Dynamic Navigation

Objetivo: o objetivo do presente estudo foi determinar a precisão da posição de entrada, apical e angular da instalação de implantes utilizando um sistema guiado através de navegação dinâmica, e compará-lo à técnica sem utilização de guias, realizando cirurgias em ambientes clinicamente simulados. O estudo contemplou as medidas de precisão geral da instalação de implantes, realizada por estudantes de Odontologia utilizando planejamento virtual em modelos dentados. Métodos: dois estudantes de Odontologia sem experiência prévia em Implantodontia instalaram 44 implantes em modelos de mandíbula e maxila. O planejamento de todos os implantes foi realizado virtualmente. As imagens de tomografia computadorizada de feixe cônico (TCFC) foram importadas para um software e sobrepostas para realizar o planejamento virtual. Os primeiros 22 implantes foram instalados utilizando a técnica sem assistência. Os 22 implantes restantes foram instalados utilizando-se um sistema de navegação dinâmica. Novas tomadas tomográficas foram realizadas após a instalação dos implantes. Os dados das TCFCs de planejamento pré-operatório e pós-cirúrgicas foram enviados para análise comparativa. As técnicas guiada e livre foram comparadas entre si e também com a literatura sobre implantes instalados em modelos usando sistemas de guias estáticos e dinâmicos. Resultados: os implantes instalados utilizando o sistema de navegação dinâmica foram significativamente mais precisos, quando comparado à técnica livre. Conclusão: a cirurgia guiada por navegação dinâmica é precisa, promissora e de fácil aprendizado para cirurgiões-dentistas em início de carreira.

Accuracy of Dynamic Navigation for Dental Implant Placement–Model-Based Evaluation

2016 ◽  
Vol 42 (5) ◽  
pp. 399-405 ◽  
Author(s):  
Robert W Emery ◽  
Scott A Merritt ◽  
Kathryn Lank ◽  
Jason D Gibbs
Keyword(s):  
Navigation System ◽  
Primary Outcome ◽  
Meta Analysis ◽  
Three Dimensional ◽  
Positional Accuracy ◽  
Clinical Simulation ◽  
Model Based ◽  
Implant Placement ◽  
Optical Triangulation ◽  
Dynamic Navigation

The purpose of this model-based study was to determine the accuracy of placing dental implants using a new dynamic navigation system. This investigation focuses on measurements of overall accuracy for implant placement relative to the virtual plan in both dentate and edentulous models, and provides a comparison with a meta-analysis of values reported in the literature for comparable static guidance, dynamic guidance, and freehand placement studies. This study involves 1 surgeon experienced with dynamic navigation placing implants in models under clinical simulation using a dynamic navigation system (X-Guide, X-Nav Technologies, LLC, Lansdale, Pa) based on optical triangulation tracking. Virtual implants were placed into planned sites using the navigation system computer. Post–implant placement cone-beam scans were taken. These scans were mesh overlaid with the virtual plan and used to determine deviations from the virtual plan. The primary outcome variables were platform and angular deviations comparing the actual placement to the virtual plan. The angular accuracy of implants delivered using the tested device was 0.89° ± 0.35° for dentate case types and 1.26° ± 0.66° for edentulous case types, measured relative to the preoperative implant plan. Three-dimensional positional accuracy was 0.38 ± 0.21 mm for dentate and 0.56 ± 0.17 mm for edentulous, measured from the implant apex.

scholarly journals A Dynamic Navigation Algorithm Considering Network Disruptions

2014 ◽  
Vol XL-4 ◽  
pp. 111-115 ◽  
Author(s):  
J. Jiang ◽  
L. Wu
Keyword(s):  
Real Time ◽  
Traffic Congestion ◽  
Emergency Evacuation ◽  
Time Dynamic ◽  
Network Information ◽  
Navigation Algorithm ◽  
Dynamic Navigation ◽  
Network Disruptions ◽  
Bad Weather ◽  
Link Travel Time

In traffic network, link disruptions or recoveries caused by sudden accidents, bad weather and traffic congestion, lead to significant increase or decrease in travel times on some network links. Similar situation also occurs in real-time emergency evacuation plan in indoor areas. As the dynamic nature of real-time network information generates better navigation solutions than the static one, a real-time dynamic navigation algorithm for emergency evacuation with stochastic disruptions or recoveries in the network is presented in this paper. Compared with traditional existing algorithms, this new algorithm adjusts pre-existing path to a new optimal one according to the changing link travel time. With real-time network information, it can provide the optional path quickly to adapt to the rapid changing network properties. Theoretical analysis and experimental results demonstrate that this proposed algorithm performs a high time efficiency to get exact solution and indirect information can be calculated in spare time.

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