Digital Dental Models and 3D Patient Photographs Registration for Orthodontic Documentation and Diagnostic Purposes

Tomaka, A.; Tarnawski, Michał; Luchowski, Leszek; Lisniewska-Machorowska, B

doi:10.1007/978-3-540-75175-5_81

Cited by 8 publications

(6 citation statements)

References 7 publications

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“…and is the accuracy sufficient to replace professional 3D scanners? What accuracy can be attained with the technique of embedding [ 20 ]? How does the embedding of intraoral models inside extraoral photogrammetric 3D reconstructions compare to the same embedding procedure performed with 3D scans?…”

Section: Methodsmentioning

confidence: 99%

“…Each of the imaging modes can be used in diagnostics on its own account, but bringing them together has a synergistic effect of creating a more-complete representation, display, and perception of the relevant structures [ 19 ]. In particular, by using a facial bow, some visible-light 3D images can be combined to embed the dental models within the 3D facial surface in the same position as actual teeth are situated within the face [ 20 , 21 ]. Such integration is relevant to medical records.…”

Section: Introductionmentioning

confidence: 99%

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Integration and Application of Multimodal Measurement Techniques: Relevance of Photogrammetry to Orthodontics

Pojda

Tomaka

Luchowski

et al. 2021

Sensors

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Multimodal imaging, including 3D modalities, is increasingly being applied in orthodontics, both as a diagnostic tool and especially for the design of intraoral appliances, where geometric accuracy is very important. Laser scanners and other precision 3D-imaging devices are expensive and cumbersome, which limits their use in medical practice. Photogrammetry, using ordinary 2D photographs or video recordings to create 3D imagery, offers a cheaper and more convenient alternative, replacing the specialised equipment with handy consumer cameras. The present study addresses the question of to what extent, and under what conditions, this technique can be an adequate replacement for the 3D scanner. The accuracy of simple surface reconstruction and of model embedding achieved with photogrammetry was verified against that obtained with a triangulating laser scanner. To roughly evaluate the impact of image imperfections on photogrammetric reconstruction, the photographs for photogrammetry were taken under various lighting conditions and were used either raw or with a blur-simulating defocus. Video footage was also tested as another 2D-imaging modality feeding data into photogrammetry. The results show the significant potential of photogrammetric techniques.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Integration and Application of Multimodal Measurement Techniques: Relevance of Photogrammetry to Orthodontics

Pojda

Tomaka

Luchowski

et al. 2021

Sensors

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“…The scans provided very good 3D renderings of the shape of either dental arch, but their coordinate systems were independent of each other, and of that of the image of the face. We used a facial arch with additional markers in order to bring all three models into register [6]. The final result is a 3D representation of the external shape of the face with the shapes of the casts correctly positioned inside.…”

Section: Purpose Of Cephalometric Computations In Craniofacial Surgerymentioning

confidence: 99%

Purpose of cephalometric computations in craniofacial surgery

Tomaka¹,

Luchowski²

2010

Bulletin of the Polish Academy of Sciences: Technical Sciences

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“…6. Preparing the model for prototyping: a) model orientation, b) simulation of the prototyping -the model and support material, c) the selected layers prepared for printing, d) the prototype with support material, e) the cleaned prototype of Computer Vision Team in our Institute [9]. These works were carried out in the cooperation of Department of Orthodontics Silesian Academy of Medicine and started from simple systems for the analysis of planar cepphalograms.…”

Section: Applications Of Computer Vision In Orthodonticsmentioning

confidence: 99%

“…Being non invasive it can be repeated freely to continuously monitor changes. The example of application for this method of orthodontic diagnosis is illustrated in [9]. The ultimate goal of all these studies is a fusion of all these imaging techniques to create patient specific, deformable geometric model of the head (Fig.…”

Section: Surface Scanningmentioning

confidence: 99%

Applications of Computer Vision in Medicine and Protection of Monuments

Skabek¹,

Tomaka²

2010

Theoretical and Applied Informatics

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In the article we describe methods for detection and analysis of surface and volumetric representations of 3D objects. We focused on applications in medical diagnostics and protection of monuments. Our research concerns the problems of automation of mesh data processing. The processing stages include: combining models from partial surfaces in different scans (particularly from different scanning devices); a hierarchical representation of surface data using progressive meshes.We also describe computer methods for orthodontic diagnosis and therapy planning. The methods are based on several techniques of imaging like: pairs of cephalograms (front and side view), computed tomography, laser scanning of dental models, 3D scanning of soft tissue (facial area). The ultimate goal of our studies is a fusion of all the information gained from these imaging techniques to create a patientspecific and deformable geometric model of the head.

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Digital Dental Models and 3D Patient Photographs Registration for Orthodontic Documentation and Diagnostic Purposes

Cited by 8 publications

References 7 publications

Integration and Application of Multimodal Measurement Techniques: Relevance of Photogrammetry to Orthodontics

Integration and Application of Multimodal Measurement Techniques: Relevance of Photogrammetry to Orthodontics

Purpose of cephalometric computations in craniofacial surgery

Applications of Computer Vision in Medicine and Protection of Monuments

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