<p><b>Aims and Hypothesis</b>: The objective of this study was the design and testing of a Prototype Computer Numerical Control (CNC) dental handpiece. We predicted that the CNC Prototype would be more accurate than the human participant prosthodontists in clinical simulation. </p><p> <b>Materials and Methods</b>: A Prototype CNC dental handpiece was developed from off the shelf components, assigned 100 typodont teeth (#18) for submission and 10 practice teeth. Single operator. Five prosthodontists, given 20 typodont teeth (#18) for submission and 10 for practice. Finished preparations were scanned with 3M True Definition<sup>®</sup> intraoral scanner outside of typodont, compared with Geomagic Control for RMSE. </p><p> <b>Results</b>: RMSE Prototype (N=100) was 0.40mm. RMSE Prosthodontists (N=100) was 0.55mm. One sided T test, mean difference −.15mm (p<.001, one sided CI −.09). One Way ANOVA (F stat <1, F=.526, p=.717), Spearman correlation Prototype RMSE vs order(ρ=.1, p=.334), RMSE vs Bur (ρ=.36, p<.001); For each prosthodontist individually (N=20) RMSE vs Order Prosthodontist 4(ρ=−.54, p= .015). Prosthodontist 5 (ρ= .58, p = .022). Prosthodontist 3 (ρ=.16, p=.498), Prosthodontist 2 (ρ=−.07, p=.772), and Prosthodontist 1 (ρ=−.08, p=.741) Spearman correlation (N=20) RMSE vs Bur Prosthodontist 5 (ρ= .51, p = .007), Prosthodontist 2 (ρ=.46, p= .040), Prosthodontist 4 (ρ=−.07, p=.758), Prosthodontist 3 (ρ=.18, p=.445), and Prosthodontist 1 (ρ=.43, p=.059) </p><p> <b>Conclusion</b>: CNC Prototype achieved superior results in clinical simulation, attained on a modest budget with a modest level of research support. Work should continue on the next iteration of a prototype to address some of the limitations of movement, feedback, and emotional acceptance of a machine performing treatment from the perspective of a patient. </p>
| Identifer | oai:union.ndltd.org:PROQUEST/oai:pqdtoai.proquest.com:10151539 |
| Date | 02 September 2016 |
| Creators | Bello, Nicholas G. |
| Publisher | Tufts University School of Dental Medicine |
| Source Sets | ProQuest.com |
| Language | English |
| Detected Language | English |
| Type | thesis |
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