Application of Three-Dimensional Digital Technology in Orthodontics: The State of the Art

Francisco, Inês; Ribeiro, M.; Marques, Filipa Carvalhal; Travassos, Raquel; Nunes, Catarina S.; Pereira, Flávia Priscila; Caramelo, Francisco; Paula, Anabela; Vale, Francisco

doi:10.3390/biomimetics7010023

Cited by 37 publications

(30 citation statements)

References 41 publications

(75 reference statements)

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“…The implementation of new digital technologies in the orthodontic field gave a significant contribution to many aspects of both clinical practice and research, from diagnosis to treatment planning and outcome assessment [ 1 ]. One of the main imports of this technological advance was the digitalization of guided procedures for the insertion of palatal TADs.…”

Section: Introductionmentioning

confidence: 99%

Accuracy of the digital workflow for guided insertion of orthodontic palatal TADs: a step-by-step 3D analysis

et al. 2022

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Background The introduction in the orthodontic field of the digital workflow for guided insertion of palatal TADs and the development of the 1-visit protocol led to the reduction of chair time and the possibility of complete customization of designs and materials. Conversely, the reduction of operative steps implicates a lower tolerance of deviations between the planned and the actual position of the miniscrews, particularly when the orthodontic device is fixed on 4 palatal TADs or has a rigid structure. This study aims to analyze the influence of each step of the digital workflow on the deviation of the miniscrews’ axis of insertion in a bicortical sample. The null hypothesis is that there are no significant differences in the deviations among the operative steps. Methods 33 subjects were selected for insertion of bicortical palatal miniscrews with a 1-visit protocol. Digital files were collected at the three stages of the workflow (i.e., digital planning, laboratory prototype, post-insertion impression). A 3D software analysis was performed on a total of 64 miniscrews. After automatic shape recognition of the guiding holes of the digital plan and the scanbodies of the laboratory prototype and post-insertion impression as geometric cylinders, their three-dimensional longitudinal axis was traced and the deviation among them was calculated. Friedman test with Bonferroni correction was performed to assess the significance of the deviations among the three steps, with significance set at p < 0.05. Results The laboratory step has a significantly lower degree of deviations (2.12° ± 1.62) than both the clinical step (6.23° ± 3.75) and the total deviations (5.70° ± 3.42). No significant differences were found between miniscrews inserted on the left or the right side. Conclusions This study suggests that laboratory procedures such as surgical guide production or rapid prototyping don’t play a significant role in the degree of deviations between the planned and the positioned palatal TADs. Conversely, the clinical steps have a bigger influence and need to be carefully evaluated. Despite this difference, there is a cumulative effect of deviations that can lead to the failure of the 1-visit protocol.

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Section: Introductionmentioning

confidence: 99%

Accuracy of the digital workflow for guided insertion of orthodontic palatal TADs: a step-by-step 3D analysis

et al. 2022

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“…Three articles focused on the 3D printing fabrication of appliances that included bands. One introduced 3D printing of orthodontic brackets, and three looked at direct-printed clear aligners [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ].…”

Section: Resultsmentioning

confidence: 99%

“…One way to learn designing is to watch tutorial videos on YouTube, which unavoidably requires a lot of time. Learning to design in such software gives more flexibility in designing where there are no limits in the 3D designing of an appliance [ 7 , 8 ].…”

Section: Cad Softwarementioning

confidence: 99%

Three-Dimensional-Printed Customized Orthodontic and Pedodontic Appliances: A Critical Review of a New Era for Treatment

et al. 2022

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Three-dimensional (3D) designing and manufacturing technology is a direct derivative of digital technology. Three-dimensional volume and surface acquisition, CAD software, and 3D manufacturing are major changes included in daily practice in many orthodontic and pedodontic offices. Customized appliances can be designed using dental CAD software or general-purpose CAD software in the office or a laboratory. Materials that can be used are resins, alloys, or zirconia. Methods: The search strategy of this critical review included keywords in combination with MeSH terms in Medline, Scopus, and Cochrane Library up to June 2022 in the English language without any limit to the publication period. Results: According to our search, 12 articles were selected for our study. All the articles were in vitro prospective studies. Conclusions: The results suggested that almost all the known appliances can be designed and printed in a tailor-made fashion in contrast to the traditional one-size-fits-all approach. Customized appliances should be manufactured according to the patient’s needs, and this is justified by the certainty that this approach will be beneficial for the patient’s treatment. There is a need for more research on all direct 3D-printed appliances.

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“…However, the precision requirements of dental practice are higher than that of the era of using plaster models under the background of digital technology, and new diagnostic and treatment methods and tools will be accompanied by the improvement of treatment goals. More precise and personalized treatment should become the new pursuit (29,30). Taking orthodontic treatment as an example, when using clear appliances for personalized treatment, IPR is a very common treatment method.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the impact of reference tooth morphology and alignment on model measurement accuracy

Mao¹,

Jia²,

Zhang³

et al. 2022

Ann Transl Med

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Background: The development of personalized and high-precision dental treatment is inseparable from the accurate measurement and analysis of the model. Compared with traditional plaster models, digital models allow dentists to obtain richer and more detailed inspection results. However, the measurement of digital models in clinical practice usually ignores the influence of the overall three-dimensional (3D) structure of teeth and tooth arrangement on the measurement results. The purpose of this study was to evaluate the effect of calibrated tooth axis and tooth arrangement on tooth width and arch length.Methods: A total of 110 digital models from 80 participants were used to measure teeth width and dental arch length using the following methods: Method A, simple positioning of the proximal and distal of teeth; Method B: calibration of the clinical crown axis; and Method C: calibration of the overall 3D axis of the teeth. The Measurand model included pre-and post-orthodontic models of the same patients to assess the impact of tooth alignment on outcomes.Results: In the aligned dentition, whether the tooth axis was calibrated had no effect on the measurement results. On unaligned dentitions, calibrating the pinion allowed for more accurate measurements, with Method C the closest to the true size. Furthermore, the arrangement of teeth affected the measurement, but there was no continuous linear correlation with arch length discrepancy (ALD).Conclusions: Clinicians should choose appropriate measurement methods according to actual needs when performing model measurement, and should pay attention to the influence of tooth axis, tooth shape, and arrangement on the measurement results.

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Application of Three-Dimensional Digital Technology in Orthodontics: The State of the Art

Cited by 37 publications

References 41 publications

Accuracy of the digital workflow for guided insertion of orthodontic palatal TADs: a step-by-step 3D analysis

Accuracy of the digital workflow for guided insertion of orthodontic palatal TADs: a step-by-step 3D analysis

Three-Dimensional-Printed Customized Orthodontic and Pedodontic Appliances: A Critical Review of a New Era for Treatment

Evaluation of the impact of reference tooth morphology and alignment on model measurement accuracy

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