Predict Tooth Wear

Study Summary

Tooth wear, resulting from gradual loss of dental hard tissue due to mechanical and chemical factors, impacts tooth structure, texture, and function. It affects quality of life, with varying prevalence (26.9% to 90.0%), and is traditionally detected visually during check-ups, often at advanced stages. Monitoring alterations in tooth shape via intraoral scanners aids early detection, but restoration remains challenging. Prevention through early detection is vital, as patients may not fully comprehend tooth structure loss until visible. Recently, statistical shape analysis (SSA) used to learn the tooth anatomy and define a reference shape (biogeneric tooth) using. However, assuring landmark consistency is challenging mostly due to biases of the operator. Recently, a robust method called MEG-IsoQuad offered automated, isotopological remeshing. Combining this with SSA holds promise for diagnostic and simulation purposes. This study aims to assess the reliability of a remeshing-SSA approach for altered and intact premolar analysis and compare machine learning algorithms for simulating the shape of the initially intact tooth or future altered one. The clinical perspective of the current work offers possibilities to: * Prevent future tooth wear by detecting it at an early stage; and communicate better to the patient by presenting him/her potential future altered teeth * Simulate the adapted reconstruction for the altered tooth by simulating the initially intact one

Primary Outcome

Four machine learning (ML) algorithms: a linear discriminant analysis (LDA) a support vector machine (SVM), a random forest (RM) and a gradient boosting machine (GBM) will be used to predict the tooth type and the alteration of the anatomy. The data set will be split into a 60/40 train and holdout test data set and models will be three-fold cross validated. Model performances will be evaluated in confusion matrices leading to define precision, recall, F1 score and accuracy.

Conditions Studied

Interventions

• OTHER Tooth Shape assessed using an intraoral scanner one after avulsion

Study Locations (5)