Use of optical scanning and 3D printing to fabricate customized appliances for patients with craniofacial disorders

Thurzo, Andrej; Urbanová, Wanda; Neuschlová, Iveta; Paouris, Dimitrios; Čverha, Martin

doi:10.1053/j.sodo.2022.10.005

Cited by 21 publications

(10 citation statements)

References 17 publications

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“…However, it should be noted that other studies have reported good accuracy with the Bellus3D system and they also stated that this system may provide 3D models of the face with clinically acceptable precision and reliable tools for planning surgical procedures [ 23 , 24 ]. Results of other studies also confirm that the TrueDepth sensor used with Bellus 3D Dental Pro application provides sufficiently accurate data to design and print viable extraoral parts of orthodontic appliances in patients with craniofacial disorders [ 25 ]. Clinical studies indicate that a discrepancy in MSD of up to 2 mm for 3D facial photography is clinically acceptable [ 26 – 28 ].…”

Section: Discussionmentioning

confidence: 57%

Comparison of three-dimensional imaging of the nose using three different 3D-photography systems: an observational study

Ritschl,

Classen,

Kilbertus

et al. 2024

Head Face Med

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Background New 3D technologies for superficial soft tissue changes, especially in plastic and reconstructive surgical procedures, can improve the planning and documentation of facial surgeries. The purpose of this study was to compare and determine the applicability and feasibility of three different 3D-photography systems in clinical practice imaging the nose. Methods A total of 16 healthy non-operated noses were included in this prospective study. A plaster model of each nose was produced, digitized, and converted to a .stl mesh (= ground truth model). Three-dimensional images of each nose were then taken using Artec Space Spider (gold standard), Planmeca ProFace®, and the Bellus3D Dental Pro application. All resulting .stl files were aligned to the ground truth model using MeshLab software, and the root mean square error (RMSE), mean surface distance (MSD), and Hausdorff distance (HD) were calculated. Results The Artec Space Spider 3D-photography system showed significantly better results compared to the two other systems in regard to RMSE, MSD, and HD (each p < 0.001). There was no significant difference between Planmeca ProFace® and Bellus3D Dental Pro in terms of RMSE, MSD, and HD. Overall, all three camera systems showed a clinically acceptable deviation to the reference model (range: -1.23–1.57 mm). Conclusions The three evaluated 3D-photography systems were suitable for nose imaging in the clinical routine. While Artec Space Spider showed the highest accuracy, the Bellus3D Dental Pro app may be the most feasible option for everyday clinical use due to its portability, ease of use, and low cost. This study presents three different systems, allowing readers to extrapolate to other systems when planning to introduce 3D photography in the clinical routine.

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Section: Discussionmentioning

confidence: 57%

Comparison of three-dimensional imaging of the nose using three different 3D-photography systems: an observational study

Ritschl,

Classen,

Kilbertus

et al. 2024

Head Face Med

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“…This kind of appliance is prepared to help feed the patient, as well as to mold the clefted maxilla and prepare it for surgery. Three-dimensional printing technology has made this process easier and more accurate [ 20 , 21 ].…”

Section: Discussionmentioning

confidence: 99%

Comparison of Two Chosen 3D Printing Resins Designed for Orthodontic Use: An In Vitro Study

2023

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(1) Background: In recent years, 3D printing has become a highly popular tool for manufacturing in various fields such as aviation, automobiles, plastics, and even medicine, including dentistry. Three-dimensional printing allows dentists to create high-precision models of teeth and jaw structure, and enables them to develop customized tools for patients’ treatment. The range of resins used in dentistry is quite large, and this branch is developing rapidly; hence, studies comparing different resins are required. The present study aimed to compare the mechanical properties of two chosen resins used in dentistry. (2) Materials and methods: Ten specimens each of two types of 3D-printable resins (BioMed Amber and IBT, developed by Formlabs) were prepared. The samples were printed on a Formlabs Form 2 3D printer according to ISO standards. Samples for the compression test were rectangular in shape (10 ± 0.2 mm × 10 ± 0.2 mm × 4 ± 0.2 mm), while the samples used for the tensile test were dumbbell shaped (75 mm long, with 10 mm end width and 2 mm thickness). Tensile and compression tests of both materials were performed in accordance with the appropriate ISO standards. (3) Results: The BioMed Amber resin was more resistant to compression and tensile forces, thus implying that the resin could withstand higher stress during stretching, pulling, or pushing. The IBT resin was less resistant to such loads, and failure of this material occurred at lower forces than those for Biomed Amber. An ANOVA test confirmed that the observed differences were statistically significant (p < 0.001). (4) Conclusions: Based on the properties of both materials, the IBT resin could be better used as a tray for placing orthodontic brackets through an indirect bonding technique, while the BioMed Amber resin would be more useful as a surgical guide for placing dental implants and mini-implants. Further potential fields of application of the resins should be investigated.

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“…Samosir and Riyadi claim that the data obtained from the smartphone camera is of the comparable quality as that of digital single-lens reflex cameras (DSLR cameras) and can be used as their alternative in photogrammetry [24]. Moreover, it was implemented in medicine as a non-invasive approach for obtaining 3D digital scans of intraoral and extraoral structures to design and fabricate individualized appliances for children with craniofacial disorders or various dental specializations [25].…”

Section: Introductionmentioning

confidence: 99%

Unexpected corneal reflection phenomenon alters smartphone 3D image-based models of the eye

Kurilová,

Bemberáková,

Kocián

et al. 2023

Journal of Electrical Engineering

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Reconstruction of a 3D eye model by photogrammetry from a smartphone video could be prospectively used in self-diagnosis, screening and telemedicine monitoring of diseases of the front part of the eye and its surroundings. The main use could be found in the treatment of diseases of the curvature and surface of the cornea and in follow-up after some refractive procedures. In our work, we create 3D image-based models of the eye after scanning the face with a smartphone. An unexpected phenomenon appeared during the reconstruction of the transparent cornea – a crater-like depression was formed at the place where nearby objects reflected on the cornea, which corresponds to the first Purkinje image, the so-called glint. We thus encountered complications that may arise when modelling transparent living structures from a video taken in a normal environment, which will need to be solved if we want to create such 3D models of the eye using this method for medical purposes. Another 3D reconstruction approach or additional algorithms must be considered as a future work.

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Use of optical scanning and 3D printing to fabricate customized appliances for patients with craniofacial disorders

Cited by 21 publications

References 17 publications

Comparison of three-dimensional imaging of the nose using three different 3D-photography systems: an observational study

Comparison of three-dimensional imaging of the nose using three different 3D-photography systems: an observational study

Comparison of Two Chosen 3D Printing Resins Designed for Orthodontic Use: An In Vitro Study

Unexpected corneal reflection phenomenon alters smartphone 3D image-based models of the eye

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