Digital expression and interactive adjustment method of personalized orthodontic archwire for robotic bending

The abnormal tooth arrangement is one of the most common clinical features of malocclusion which is mainly caused by the tooth root compression malformation. The second sequential loop is mostly used for the adjusting of the abnormal tooth arrangement. Now, the shape devise of orthodontic archwire depends completely on the doctor’s experience and patients’ feedback, this practice is time-consuming, and the treatment effect is unstable. The orthodontic-force of the different parameters of the second sequence loop, including different cross-sectional parameters, material parameters, and characteristic parameters, was compared and simulated for the abnormal condition of root compression deformity. In this paper, the analysis and experimental study on the unidirectional orthodontic-force were carried out. The different parameters of the second sequential loop are analyzed, and the equivalent beam deflection theory is used to analyze the relationship between orthodontic-force and archwire parameters. Based on the structural analysis of the second sequential loop, the device for measuring orthodontic force has been designed. The orthodontic force with different structural characteristics of archwire was compared and was measured. Finally, the correction factor was developed in the unidirectional orthodontic-force forecasting model to eliminate the influence of inherent error. The average relative error rate of the theoretical results of the unidirectional orthodontic-force forecasting model is between 12.6% and 8.75%, which verifies the accuracy of the prediction model.

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“…Loop Unidirectional Orthodontic-Force. Sequential loop is one of the basic loading units of orthodontic-force [33][34][35].…”

Section: Design Of the Measuring Methods Of The Second Sequentialmentioning

confidence: 99%

Modeling and Experimentation of the Unidirectional Orthodontic Force of Second Sequential Loop Orthodontic Archwire

Jiang

Chen

Wang

et al. 2020

Applied Bionics and Biomechanics

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“…T-loop is widely used to close gap between teeth due to the structural characteristics that can generate horizontal, vertical and torsional force [ 9 , 10 , 11 , 12 , 13 ]. During the process of closing gap, the teeth are subjected to both the orthodontic force generated by the T-loop and the biological resistance of the periodontal tissues [ 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Establishment, FEM analysis and experimental validation of tooth movement prediction model of orthodontic archwire T-loop

et al. 2022

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Background The T-loop has been used clinically to close gap between teeth. And it is a typical orthodontic archwire bending method. However, the design of the T-loop parameters for different patients is based on the clinical experience of the dentists. The variation in dentists' clinical experience is the main reason for inadequate orthodontic treatment, even high incidence of postoperative complications. Methods Firstly, the tooth movement prediction model is established based on the analysis of the T-loop structure and the waxy model dynamic resistance. As well as the reverse reconstruction of the complete maxillary 3D model based on the patient CBCT images, the oral biomechanical FEM analysis is completed. A maxillary waxy dental model is manufactured to realize the water-bath measurement experiment in vitro mimicking the oral bio-environment. Thus, the calculated, simulation and experimental data are obtained, as well as obtaining a cloud of total deformation from the simulation analysis. Results The growth trend of the 11 sets of simulation data is the same as that of the experimental data. And all of them show that the tooth displacement is positively correlated with the cross-sectional size of the archwire, and the clearance distance. As well as the higher Young's modulus of the archwire material, the greater the tooth displacement. And the effect of archwire parameters on tooth displacement derived from simulation and experimental data is consistent with the prediction model. The experimental and calculated data are also compared and analyzed, and the two kinds of data are basically consistent in terms of growth trends and fluctuations, with deviation rates ranging from 2.17 to 10.00%. Conclusions This study shows that the accuracy and reliability of the tooth movement prediction model can be verified through the comparative analysis and deviation calculation of the obtained calculated, simulation and experimental data, which can assist dentists to safely and efficiently perform orthodontic treatment on patients. And the FEM analysis can achieve predictability of orthodontic treatment results.

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“…In an interview done between Dr. Sachdeva and robert P, he explained that the reason behind Suresmile technology's invention is to speed up an extremely careful delivery model (Scholz and Sachdeva, 2010). Through the Suresmile system, orthodontic archwire-assisted forming equipment and orthodontic archwire bending machines have been used to bend orthodontic archwires (Jiang et al, 2019). The robot is activated and worked according to the input inserted by the dentist.…”

Section: Introductionmentioning

confidence: 99%

Suresmile Technology: Precision to your Smile - A Review

Shahroom¹

2020

Biosci. Biotech. Res. Comm

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Dentistry has contributed to the huge advancement of technology and innovation for the past few decades. Suresmile technology is one of the latest advanced technologies in orthodontic treatment which has been introduced since 1998 and commercially released in 2005. The latest advancements in Dentistry other than Suresmile technology (OraMetrix) are Insignia (Ormco), orthoCAD (Cadent) and iBraces (3M Unitek) It uses advanced technology such as three-dimensional (3D) imaging of the dentition, robotics, and computer-aided manufacturing and digital model technology. It has been used widely by orthodontists and it may be expanded all over the world in the future. The advantages of this technology which provides benefits to the patients especially in terms of length of treatment make the patient willing to pay greater cost just for shorter treatment time. They might feel comfortable throughout the treatment as the number of visits to the dentist can also be reduced by using Suresmile. It is important to understand the accuracy and reliability of these imaging devices. Thus, proper knowledge about this technology is at utmost essential to ensure the great and successful outcome of the orthodontic treatment. Hence, a review was done to analyze the effectiveness, efficiency, reliability, advantages and disadvantages of the sure smile technology.

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Digital expression and interactive adjustment method of personalized orthodontic archwire for robotic bending

Cited by 7 publications

References 15 publications

Modeling and Experimentation of the Unidirectional Orthodontic Force of Second Sequential Loop Orthodontic Archwire

Modeling and Experimentation of the Unidirectional Orthodontic Force of Second Sequential Loop Orthodontic Archwire

Establishment, FEM analysis and experimental validation of tooth movement prediction model of orthodontic archwire T-loop

Suresmile Technology: Precision to your Smile - A Review

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