Semi-automatic teeth segmentation in 3D models of dental casts using a hybrid methodology

Plaster dental casts represent an important item in the process of diagnosis, therapy planning and documenting, both in orthodontics, as well as other areas of dentistry. Dental casts allow us to track occlusal contacts before the therapy as well as the changes during the growth and therapy. Although they do possess many positive features, due to the rapid advancements in technology, their negative sides have became more prominent leading to the more widespread use of digital 3D models as their replacement. In this paper, we present a web based system that allows us, after the casts have been scanned, to produce easily usable digital models, to store them and perform measurements on them. Performed measurements are suitable for futher processing and analysis.

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QUANTIFICATION OF DENTAL MOVEMENTS IN ORTHODONTIC FOLLOW-UP: A NOVEL APPROACH BASED ON REGISTRATION OF 3D MODELS OF DENTAL CASTS

STOMATOLOGY EDU JOURNAL ◽

10.25241/stomaeduj.2017.4(1).5 ◽

2017 ◽

Vol 4 (1) ◽

pp. 53-59

Author(s):

Daniele Gibelli ◽

◽

Valentina Pucciarelli ◽

Luca Pisoni ◽

Francesca M.E. Rusconi ◽

...

Keyword(s):

3D Models ◽

Novel Approach ◽

Dental Casts

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Measurement of the Depth of Spee's Curve using Digital 3D Dental Models

Elektronika ir Elektrotechnika ◽

10.5755/j01.eee.109.3.170 ◽

1970 ◽

Vol 109 (3) ◽

pp. 53-56

Author(s):

R. Adaskevicius ◽

V. Svalkauskiene

Keyword(s):

Three Dimensional ◽

Computer Software ◽

3D Models ◽

Digital Measurement ◽

Curve Of Spee ◽

Measurement Results ◽

Dental Models ◽

Digital Dental Models ◽

Dental Cast ◽

Dental Casts

Aim of our study is to consider a possibility of using 3D computer models for measurement the depth of curve of Spee. Curve of Spee is very important in diagnostics of orhtodontical patient. The structured-light three-dimensional (3D) scanner was used for scanning dental casts. The cusp tips of the molars, premolars, and incisors of the mandible were identified using digital 3D models and Rapidform 2006 software. The depth of the curve of Spee was evaluated by means of our computer software. Algorithm for depth of Spee's curve evaluation is presented. The dental casts of 15 subjects were scanned and measured to test the reliability of method contrasting with conventional manual measurement. The depth of Spee's curve was measured 7 times for every dental cast and repeatability of conventional and digital measurement methods was compared. Within a confidence interval of 95%, we could say that measurement results of depth of Spee's curve using two different methods don't differ more than 0.5 mm. Three-dimensional digital dental models is useful tool for analysis of depth of Spee's curve and treatment planning. Ill. 4, bibl. 11 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.109.3.170

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QUANTIFICATION OF DENTAL MOVEMENTS IN ORTHODONTIC FOLLOW-UP: A NOVEL APPROACH BASED ON REGISTRATION OF 3D MODELS OF DENTAL CASTS

STOMATOLOGY EDU JOURNAL ◽

10.25241/2017.4(1).5 ◽

2017 ◽

Vol 4 (1) ◽

pp. 55-61

Author(s):

Daniele Gibelli ◽

◽

Valentina Pucciarelli ◽

Luca Pisoni ◽

Francesca M.E. Rusconi ◽

...

Keyword(s):

3D Models ◽

Novel Approach ◽

Dental Casts

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THE GENESIS OF TOOLS FOR TEACHING PUPILS TO DEVELOP FLOWCHARTS

Informatics in school ◽

10.32517/2221-1993-2020-19-1-11-15 ◽

2020 ◽

pp. 11-15

Author(s):

A. A. Zubrilin ◽

M. N. Makarov

Keyword(s):

Historical Perspective ◽

3D Models ◽

Computer Applications ◽

Internet Services

The historical perspective provides an overview of how to study flowcharts in a school informatics course. Computer applications and Internet services are considered that automate the development of flowcharts. It is shown how 3D technologies can help an informatics teacher in preparing 3D models for the study of flowcharts.

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