Use of Virtual Comparison Software for Preparation Depth Assessment in a Dental Technique Skills Course
Autor: | Upoma Guha, Hema Arany, Ramtin Sadid-Zadeh |
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Rok vydání: | 2018 |
Předmět: |
020205 medical informatics
Formative Feedback 02 engineering and technology Dental education Mandibular first molar 03 medical and health sciences 0302 clinical medicine Software stomatognathic system 0202 electrical engineering electronic engineering information engineering Image Processing Computer-Assisted Humans Education Dental Mathematics Orthodontics Intraoral scanner business.industry 030206 dentistry General Medicine 3d image Virtual image Tooth Preparations business Dental Cavity Preparation Computer-Assisted Instruction |
Zdroj: | Journal of dental education. 82(8) |
ISSN: | 1930-7837 |
Popis: | The aims of this study were 1) to determine whether the Compare software Comparison% score provided appropriate feedback for preparation depth on a non-anatomical tooth and 2) to define an acceptable tolerance for use in calculating the Comparison% for virtual assessment of cavity depth on a non-anatomical mandibular first molar. Forty-six non-anatomical ivorine teeth with laser-marked outlines on their occlusal surfaces were used for this study. One tooth was prepared at a 1.5 mm depth, approved by participating faculty at a U.S. dental school, and served as the standard preparation. The remaining teeth were divided into three groups (n=15 per group) for cavity preparation depths of 1 mm, 1.5 mm, and 2 mm in the laser-engraved external outline. Teeth were prepared using an electric handpiece with a 330 bur and a hatchet. Virtual images of the standard and experimental tooth preparations were recorded using an intraoral scanner. Virtual comparison software was then used to superimpose a three-dimensional (3D) image of each experimental preparation on the 3D image of the standard preparation. The software calculated comparison surface percentage values (Comparison%) at a 100 and 200 micron tolerance for each specimen. Two-way mixed linear models (α=0.01) were adopted to compare outcomes for the two levels of tolerance for teeth with different depths of preparation. Using a tolerance level of 200 μm, Comparison% scores for the acceptable preparation depth of 1.5 mm were found to be significantly different (p |
Databáze: | OpenAIRE |
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