Comparison of reconstructed rapid prototyping models produced by 3-dimensional printing and conventional stone models with different degrees of crowding
Introduction Rapid prototyping models can be reconstructed from stereolithographic digital study model data to produce hard-copy casts. In this study, we aimed to compare agreement and accuracy of measurements made with rapid prototyping and stone models for different degrees of crowding. Methods Th...
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| Format: | Article |
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Elsevier
2017
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| _version_ | 1796961707499716608 |
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| author | Wan Hassan, Wan Nurazreena Yusoff, Yusnilawati Mardi, Noor Azizi |
| author_facet | Wan Hassan, Wan Nurazreena Yusoff, Yusnilawati Mardi, Noor Azizi |
| author_sort | Wan Hassan, Wan Nurazreena |
| collection | UM |
| description | Introduction Rapid prototyping models can be reconstructed from stereolithographic digital study model data to produce hard-copy casts. In this study, we aimed to compare agreement and accuracy of measurements made with rapid prototyping and stone models for different degrees of crowding. Methods The Z Printer 450 (3D Systems, Rock Hill, SC) reprinted 10 sets of models for each category of crowding (mild, moderate, and severe) scanned using a structured-light scanner (Maestro 3D, AGE Solutions, Pisa, Italy). Stone and RP models were measured using digital calipers for tooth sizes in the mesiodistal, buccolingual, and crown height planes and for arch dimension measurements. Bland-Altman and paired t test analyses were used to assess agreement and accuracy. Clinical significance was set at ±0.50 mm. Results Bland-Altman analysis showed the mean bias of measurements between the models to be within ±0.15 mm (SD, ±0.40 mm), but the 95% limits of agreement exceeded the cutoff point of ±0.50 mm (lower range, −0.81 to −0.41 mm; upper range, 0.34 to 0.76 mm). Paired t tests showed statistically significant differences for all planes in all categories of crowding except for crown height in the moderate crowding group and arch dimensions in the mild and moderate crowding groups. Conclusions The rapid prototyping models were not clinically comparable with conventional stone models regardless of the degree of crowding. |
| first_indexed | 2024-03-06T05:58:08Z |
| format | Article |
| id | um.eprints-22834 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:58:08Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-228342019-10-24T04:12:30Z http://eprints.um.edu.my/22834/ Comparison of reconstructed rapid prototyping models produced by 3-dimensional printing and conventional stone models with different degrees of crowding Wan Hassan, Wan Nurazreena Yusoff, Yusnilawati Mardi, Noor Azizi RK Dentistry TJ Mechanical engineering and machinery Introduction Rapid prototyping models can be reconstructed from stereolithographic digital study model data to produce hard-copy casts. In this study, we aimed to compare agreement and accuracy of measurements made with rapid prototyping and stone models for different degrees of crowding. Methods The Z Printer 450 (3D Systems, Rock Hill, SC) reprinted 10 sets of models for each category of crowding (mild, moderate, and severe) scanned using a structured-light scanner (Maestro 3D, AGE Solutions, Pisa, Italy). Stone and RP models were measured using digital calipers for tooth sizes in the mesiodistal, buccolingual, and crown height planes and for arch dimension measurements. Bland-Altman and paired t test analyses were used to assess agreement and accuracy. Clinical significance was set at ±0.50 mm. Results Bland-Altman analysis showed the mean bias of measurements between the models to be within ±0.15 mm (SD, ±0.40 mm), but the 95% limits of agreement exceeded the cutoff point of ±0.50 mm (lower range, −0.81 to −0.41 mm; upper range, 0.34 to 0.76 mm). Paired t tests showed statistically significant differences for all planes in all categories of crowding except for crown height in the moderate crowding group and arch dimensions in the mild and moderate crowding groups. Conclusions The rapid prototyping models were not clinically comparable with conventional stone models regardless of the degree of crowding. Elsevier 2017 Article PeerReviewed Wan Hassan, Wan Nurazreena and Yusoff, Yusnilawati and Mardi, Noor Azizi (2017) Comparison of reconstructed rapid prototyping models produced by 3-dimensional printing and conventional stone models with different degrees of crowding. American Journal of Orthodontics and Dentofacial Orthopedics, 151 (1). pp. 209-218. ISSN 0889-5406, DOI https://doi.org/10.1016/j.ajodo.2016.08.019 <https://doi.org/10.1016/j.ajodo.2016.08.019>. https://doi.org/10.1016/j.ajodo.2016.08.019 doi:10.1016/j.ajodo.2016.08.019 |
| spellingShingle | RK Dentistry TJ Mechanical engineering and machinery Wan Hassan, Wan Nurazreena Yusoff, Yusnilawati Mardi, Noor Azizi Comparison of reconstructed rapid prototyping models produced by 3-dimensional printing and conventional stone models with different degrees of crowding |
| title | Comparison of reconstructed rapid prototyping models produced by 3-dimensional printing and conventional stone models with different degrees of crowding |
| title_full | Comparison of reconstructed rapid prototyping models produced by 3-dimensional printing and conventional stone models with different degrees of crowding |
| title_fullStr | Comparison of reconstructed rapid prototyping models produced by 3-dimensional printing and conventional stone models with different degrees of crowding |
| title_full_unstemmed | Comparison of reconstructed rapid prototyping models produced by 3-dimensional printing and conventional stone models with different degrees of crowding |
| title_short | Comparison of reconstructed rapid prototyping models produced by 3-dimensional printing and conventional stone models with different degrees of crowding |
| title_sort | comparison of reconstructed rapid prototyping models produced by 3 dimensional printing and conventional stone models with different degrees of crowding |
| topic | RK Dentistry TJ Mechanical engineering and machinery |
| work_keys_str_mv | AT wanhassanwannurazreena comparisonofreconstructedrapidprototypingmodelsproducedby3dimensionalprintingandconventionalstonemodelswithdifferentdegreesofcrowding AT yusoffyusnilawati comparisonofreconstructedrapidprototypingmodelsproducedby3dimensionalprintingandconventionalstonemodelswithdifferentdegreesofcrowding AT mardinoorazizi comparisonofreconstructedrapidprototypingmodelsproducedby3dimensionalprintingandconventionalstonemodelswithdifferentdegreesofcrowding |