Use of an ultrahigh-speed laser scanner for constructing three-dimensional shapes of dentition and occlusion

Sohmura, Taiji; Kojima, Tetsuya; Wakabayashi, Keiji; Takahashi, Junzô

doi:10.1067/mpr.2000.109786

Cited by 46 publications

(34 citation statements)

References 8 publications

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“…11,12 The scanner used in this study was an optical system that used projected light and digital camera technology to capture approximately 140,000 points in 3D on the surface of the object, termed a 'point cloud'. The scanner can only collect data on surfaces within the line of sight.…”

Section: Introductionmentioning

confidence: 99%

A technique for fabricating patterns for removable partial denture frameworks using digitized casts and electronic surveying

Williams¹,

Bibb²,

Rafik³

2004

The Journal of Prosthetic Dentistry

112

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Although computer-aided design and manufacture techniques have shown some promising applications in the fabrication of crowns, inlays, and maxillofacial and oral surgery, the field of removable prosthodontics has not embraced these technologies so far. This study developed and investigated computer-aided techniques that may eventually enable prosthodontic procedures such as surveying and the production of sacrificial patterns to be performed digitally.A 3-dimensional computer model of a conventional cast from a patient was obtained using an optical surface capture device (a scanner). The shape of a number of components of a removable partial denture framework was modelled on the 3-dimensional scan electronically using computer aided design software. A physical plastic shape of the components was produced using a Rapid Prototyping machine and used as a sacrificial pattern. Techniques to allow digital cast surveying before the production of sacrificial patterns were also developed. The results show that digital dental surveying and machine-produced sacrificial patterns can be accomplished. The study forms a basis for further developments leading to a fully integrated approach to the computer-aided design and fabrication of removable partial denture frameworks.

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Section: Introductionmentioning

confidence: 99%

A technique for fabricating patterns for removable partial denture frameworks using digitized casts and electronic surveying

Williams¹,

Bibb²,

Rafik³

2004

The Journal of Prosthetic Dentistry

112

View full text Add to dashboard Cite

show abstract

“…Sohmura et al measured the dimensions of simulated dental molds with a 3D scanner and reported 0.02 mm differences between the actual molds and the virtual 3D models. 36 Meunier and Yin showed that there were no significant differences between the anthropometric results of photographic and traditional methods. 37 The t test showed no significant differences between the measurements of the dimensions of 10 participants with the traditional and laser scanner anthropometric methods.…”

Section: Discussionmentioning

confidence: 99%

Technical Report on the Modification of 3-Dimensional Non-contact Human Body Laser Scanner for the Measurement of Anthropometric Dimensions: Verification of its Accuracy and Precision

Roodbandi

Naderi²,

Hashenmi-Nejad

et al. 2017

J Lasers Med Sci

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“…Using a light-stripe method to emit a horizontalstripe laser and to scan the object using a galvanic mirror, Sohmura et al 16) was able to measure a dentulous plaster model in about 0.6 seconds with a measurement interval of 0.4 mm. In other words, measurement time could be even shorter if a light-stripe method were used than the measurement system used in the current study.…”

Section: Analysis Methods 1 Measurement Accuracymentioning

confidence: 99%

“…Measurement interval affects the accuracy of the reconstructed images of the objects 16) . In the present study, measurement interval was 0.25 mm in both anteroposterior and lateral directions.…”

Section: Analysis Methods 1 Measurement Accuracymentioning

confidence: 99%

A Three-dimensional Analysis Method for Edentulous Mandibular Ridge Shape

Murakami¹,

Kawahata²,

Nagaoka³

2007

Dent. Mater. J.

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The aim of this study was to develop a three-dimensional method to analyze edentulous ridge shapes.A laser projection method was used to record the shape of edentulous plaster models. Contour of residual ridge on the reconstructed image was then subdivided into small triangles, and a 'normal line' representing the center of gravity of each triangle was determined buccolingually and anteroposteriorly. Angle between the normal line on the residual ridge and the tentative occlusal plane was calculated for each triangle. These angles were then used to analyze the ridge shape.This method was used to analyze the ridges of 20 edentulous patients with excessive bone resorption. The results suggested that this method was useful for analyzing edentulous ridges regardless of ridge shape and degree of resorption.

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Use of an ultrahigh-speed laser scanner for constructing three-dimensional shapes of dentition and occlusion

Cited by 46 publications

References 8 publications

A technique for fabricating patterns for removable partial denture frameworks using digitized casts and electronic surveying

A technique for fabricating patterns for removable partial denture frameworks using digitized casts and electronic surveying

Technical Report on the Modification of 3-Dimensional Non-contact Human Body Laser Scanner for the Measurement of Anthropometric Dimensions: Verification of its Accuracy and Precision

A Three-dimensional Analysis Method for Edentulous Mandibular Ridge Shape

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