Page 114 - Demo

Chapter 7112AbstractObjectives: Surprisingly little is known about tooth removal procedures. This might be due to the difficulty of gaining reliable data on these procedures. To improve our understanding of these procedures, machine-learning techniques were used to design a multiclass classification model of tooth removal based on force, torque and movement data recorded during tooth removal. Methods: A measurement setup consisting of, amongst others, robot technology was used to gather high quality data on forces, torques and movement in clinically relevant dimensions. Fresh frozen cadavers were used to match the clinical situation as closely as possible. Clinically interpretable variables or 'features' were engineered and feature selection took place to process the data. A Gaussian Naïve Bayes model was trained to classify tooth removal procedures. Results: Data of 110 successful tooth removal experiments were available to train the model. Out of 75 clinically designed features, 33 were selected for the classification model. The overall accuracy of the classification model in four random subsamples of data was 86% in the training set and 54% in the test set. In 95% and 88%, respectively, the model correctly classifies the (upper or lower) jaw and either the right class or a class of neighboring teeth.Significance: This manuscript discusses the design and performance of a multiclass classification model for tooth removal. Despite the relatively small dataset, the quality of the data was sufficient to develop a first model with reasonable performance. The results of the feature engineering, selection process as well as the classification model itself can be considered as a strong first step towards a better understanding of these complex procedures. It has the potential to aid in the development of evidence-based educational material and clinical guidelines in the near future.Tom van Riet.indd 112 26-10-2023 11:59