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Registration accuracy in the integration of laser-scanned dental images into maxillofacial cone-beam computed tomography images.
Am J Orthod Dentofacial Orthop. 2011 Oct; 140(4):585-91.AJ

Abstract

INTRODUCTION

A precision 3-dimensional (3D) head model can be fabricated by integrating a digital dental model into a maxillofacial 3D image. The integration requires accurate registration of 2 image modalities. The aims of this study were to determine the registration errors for implementation of laser-scanned dental images into cone-beam computed tomography (CBCT) scan data and to examine the influence of the registration area on the accuracy of registration.

METHODS

The CBCT scans were obtained from 30 adults, and the maxillofacial 3D images were reconstructed. Maxillary and mandibular dental casts were taken from the same subjects and scanned with a 3D laser scanner. The laser-scanned maxillary and mandibular dentition images were incorporated into the CBCT images of each arch in 3 ways according to the registration area: only the buccal surfaces, only the lingual surfaces, and both the buccal and lingual surfaces. Surface-based registration was performed by using an iterative closest point algorithm, and its errors were evaluated by measuring the 3D Euclidean distances between the surface points on the 2 images.

RESULTS

The registration errors ranged from 0.27 to 0.33 mm. The mandibular arch did not show significant differences in registration errors according to the selected area for the registration. The maxillary arch, however, showed significant differences according to the registration area. When the lingual surfaces only were used for registration, the errors were greater than for the other 2 methods. The errors were least when both the buccal and lingual surfaces were used for registration.

CONCLUSIONS

The results of this study indicate that accuracy in the integration of laser-scanned dental images into the maxillofacial CBCT images increases when a broad area is used for registration.

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Authors+Show Affiliations

Noh H
School of Dentistry, Chonnam National University, Gwangju, Korea.
Nabha W
No affiliation info available
Cho JH
No affiliation info available
Hwang HS
No affiliation info available

MeSH

AdultAlgorithmsComputer SimulationCone-Beam Computed TomographyDental ArchDental ModelsFacial BonesFemaleGingivaHumansImage EnhancementImage Processing, Computer-AssistedJawLasersMaleMandibleMaxillaSoftwareToothYoung Adult

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21967948

Citation

Noh, Hoon, et al. "Registration Accuracy in the Integration of Laser-scanned Dental Images Into Maxillofacial Cone-beam Computed Tomography Images." American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, vol. 140, no. 4, 2011, pp. 585-91.
Noh H, Nabha W, Cho JH, et al. Registration accuracy in the integration of laser-scanned dental images into maxillofacial cone-beam computed tomography images. Am J Orthod Dentofacial Orthop. 2011;140(4):585-91.
Noh, H., Nabha, W., Cho, J. H., & Hwang, H. S. (2011). Registration accuracy in the integration of laser-scanned dental images into maxillofacial cone-beam computed tomography images. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 140(4), 585-91. https://doi.org/10.1016/j.ajodo.2011.04.018
Noh H, et al. Registration Accuracy in the Integration of Laser-scanned Dental Images Into Maxillofacial Cone-beam Computed Tomography Images. Am J Orthod Dentofacial Orthop. 2011;140(4):585-91. PubMed PMID: 21967948.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Registration accuracy in the integration of laser-scanned dental images into maxillofacial cone-beam computed tomography images. AU - Noh,Hoon, AU - Nabha,Wael, AU - Cho,Jin-Hyoung, AU - Hwang,Hyeon-Shik, PY - 2010/07/01/received PY - 2011/04/01/revised PY - 2011/04/01/accepted PY - 2011/10/5/entrez PY - 2011/10/5/pubmed PY - 2011/12/13/medline SP - 585 EP - 91 JF - American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics JO - Am J Orthod Dentofacial Orthop VL - 140 IS - 4 N2 - INTRODUCTION: A precision 3-dimensional (3D) head model can be fabricated by integrating a digital dental model into a maxillofacial 3D image. The integration requires accurate registration of 2 image modalities. The aims of this study were to determine the registration errors for implementation of laser-scanned dental images into cone-beam computed tomography (CBCT) scan data and to examine the influence of the registration area on the accuracy of registration. METHODS: The CBCT scans were obtained from 30 adults, and the maxillofacial 3D images were reconstructed. Maxillary and mandibular dental casts were taken from the same subjects and scanned with a 3D laser scanner. The laser-scanned maxillary and mandibular dentition images were incorporated into the CBCT images of each arch in 3 ways according to the registration area: only the buccal surfaces, only the lingual surfaces, and both the buccal and lingual surfaces. Surface-based registration was performed by using an iterative closest point algorithm, and its errors were evaluated by measuring the 3D Euclidean distances between the surface points on the 2 images. RESULTS: The registration errors ranged from 0.27 to 0.33 mm. The mandibular arch did not show significant differences in registration errors according to the selected area for the registration. The maxillary arch, however, showed significant differences according to the registration area. When the lingual surfaces only were used for registration, the errors were greater than for the other 2 methods. The errors were least when both the buccal and lingual surfaces were used for registration. CONCLUSIONS: The results of this study indicate that accuracy in the integration of laser-scanned dental images into the maxillofacial CBCT images increases when a broad area is used for registration. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/21967948/Registration_accuracy_in_the_integration_of_laser_scanned_dental_images_into_maxillofacial_cone_beam_computed_tomography_images_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(11)00614-7 DB - PRIME DP - Unbound Medicine ER -