3D surface imaging in dentistry – what we are looking at

Ireland, Anthony J; McNamara, Clare; Clover, M. J.; House, Kate; Wenger, N. C.; Barbour, Michele E; Alemzadeh, Kazem; Zhang, L.; Sandy, Jonathan R

doi:10.1038/sj.bdj.2008.845

Cited by 45 publications

(16 citation statements)

References 23 publications

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“…Three-dimensional imaging has the potential for accurate facial measurement and permits the clinician to take measurements in the absence of the patient once the image has been captured and virtually stored. It may also provide an invaluable interactive tool for discussion with patients when communicating existing problems and exhibiting more accurate outcomes [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Validation of a new three-dimensional imaging system using comparative craniofacial anthropometry

Naini

Akram

Kepinska

et al. 2017

Maxillofac Plast Reconstr Surg

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BackgroundThe aim of this study is to validate a new three-dimensional craniofacial stereophotogrammetry imaging system (3dMDface) through comparison with manual facial surface anthropometry. The null hypothesis was that there is no difference between craniofacial measurements using anthropometry vs. the 3dMDface system.MethodsFacial images using the new 3dMDface system were taken from six randomly selected subjects, sitting in natural head position, on six separate occasions each 1 week apart, repeated twice at each sitting. Exclusion criteria were excess facial hair, facial piercings and undergoing current dentofacial treatment. 3dMDvultus software allowed facial landmarks to be marked and measurements recorded. The same measurements were taken using manual anthropometry, using soluble eyeliner to pinpoint landmarks, and sliding and spreading callipers and measuring tape to measure distances. The setting for the investigation was a dental teaching hospital and regional (secondary and tertiary care) cleft centre. The main outcome measure was comparison of the craniofacial measurements using the two aforementioned techniques.ResultsThe results showed good agreement between craniofacial measurements using the 3dMDface system compared with manual anthropometry. For all measurements, except chin height and labial fissure width, there was a greater variability with the manual method compared to 3D assessment. Overall, there was a significantly greater variability in manual compared with 3D assessments (p < 0.02).ConclusionsThe 3dMDface system is validated for craniofacial measurements.

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Section: Introductionmentioning

confidence: 99%

Validation of a new three-dimensional imaging system using comparative craniofacial anthropometry

Naini

Akram

Kepinska

et al. 2017

Maxillofac Plast Reconstr Surg

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“…In practice, two main categories of 3D scanners were defined: contact and noncontact. Contact scanners cannot be used on flexible surfaces, such as impression materials, which would be either deformed or worn due to probe contact pressure . As noncontact scanning methods were involved, intraoral digitization of the root canal appears to be impractical because of the narrow and deep canal form and the small space of the oral cavity.…”

Section: Discussionmentioning

confidence: 99%

A Novel Computer‐Aided Method to Fabricate a Custom One‐Piece Glass Fiber Dowel‐and‐Core Based on Digitized Impression and Crown Preparation Data

Zhi-yu

Deng

et al. 2013

Journal of Prosthodontics

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“…To obtain high-speed 3-D images in dentistry, 3-D intraoral scanners have been studied using various optical methods. 10 The 3-D intraoral scanners have been pursued to take digital impressions. [11][12][13][14][15][16] The purpose of the impression-taking in dentistry is to transfer 3-D information from the patient's mouth to a model as accurately and comfortably as possible.…”

Section: Introductionmentioning

confidence: 99%

Wide field of view optical coherence tomography for structural and functional diagnoses in dentistry

et al. 2018

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We report herein the fabrication and performance response of a three-dimensional (3-D) intraoral scan probe based on optical coherence tomography (OCT) that enables 3-D structural and functional diagnoses of the human teeth. The OCT system was configured using a swept-source OCT (SS-OCT) with a center wavelength of 1310 nm. The scan probe was built using an MEMS mirror and an optical collimator. The implemented SS-OCT equipped with the MEMS-based scan probe yielded an axial resolution of 10 μm and a scan range of 8 × 8 mm2. Two-dimensional (2-D) cross-sectional images of the teeth were acquired by the scan probe based on the OCT. The 3-D volume image was acquired by combining a series of 2-D images, which includes internal and structural information of the human teeth. To utilize the OCT system as an intraoral scanner, partially overlapped 3-D volume images were sequentially acquired and stitched. The 3-D stitching was implemented based on an iterative closest point algorithm. The feasibility of the intraoral scan probe is demonstrated based on its ability to image and characterize the structure and function of the human teeth.

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3D surface imaging in dentistry – what we are looking at

Cited by 45 publications

References 23 publications

Validation of a new three-dimensional imaging system using comparative craniofacial anthropometry

Validation of a new three-dimensional imaging system using comparative craniofacial anthropometry

A Novel Computer‐Aided Method to Fabricate a Custom One‐Piece Glass Fiber Dowel‐and‐Core Based on Digitized Impression and Crown Preparation Data

Wide field of view optical coherence tomography for structural and functional diagnoses in dentistry

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