Efficient intraoral photogrammetry using self-identifying projective invariant marker.

Yanghai Chen, Mingzhu Zhu, Bingwei He, Zhen Deng

Abstract read

In one paragraph

Article in International journal of computer assisted radiology and surgery, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

4 authors.

Yanghai ChenSchool of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, 350108, Fujian, China.

Mingzhu ZhuSchool of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, 350108, Fujian, China. mzz@fzu.edu.cn.ORCID http://orcid.org/0000-0002-3299-2441

Bingwei HeSchool of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, 350108, Fujian, China.

Zhen DengSchool of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, 350108, Fujian, China.

Funding

the National Natural Science Foundation of China 62003007the National Natural Science Foundation of China 62003089the Nature Science Foundation of Fujian Province 2022J05111

6 · The paper itself

Abstract

purposeThe re-measurement of full-arch implant digital impressions is an important step in denture restoration. This paper provides an efficient oral photogrammetry technology using projective invariant marker, applied in the re-measurement of full-arch implant digital impressions.

methodsWe have developed a self-recognizing marker with projection invariance, along with its detection code. The marker is installed on the scanning body and used for photogrammetric measurements. Triangulation is utilized to determine the 3D coordinates of the marker, followed by a series of post-processing steps to obtain more accurate 3D coordinates.

resultsThe experimental data indicate that the optimal working distance is between 200 and 250 mm, with a minimum measurement error of less than 0.05 mm and an average measurement error of 0.10 mm. The measurement time is less than 2 min.

conclusionsThe experimental results show that the photogrammetric system can obtain reliable positions of full-arch implants with efficient photogrammetry, without the need to enter the patient's oral cavity, and has potential clinical application value.

Indexed as

Dental ImplantsModels, DentalComputer-Aided DesignHumansImaging, Three-DimensionalPhotogrammetryDental ImplantsFiducial markerImplantPhotogrammetryProjective invariant

Identifiers

PMID38070075

DOI10.1007/s11548-023-03039-1

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.