AUTOMATED DENTAL FILLING DISPENSING AND POST INSERTION MULTIFOCAL STRESS DISTRIBUTION ANALYSIS FOR IMPROVED TREATMENT OUTCOMES: A PROOF OF CONCEPT
DOI:
https://doi.org/10.33279/jkcd.v15i03.909Keywords:
Dental caries, Automated dental fi lling, Von Mises stress, Simulations, Restorative materialsAbstract
Objectives: The objective of this manuscript was to integrate COMSOL-generated data and use a dental filling robot to fill a wax model of a molar tooth with the recommended filling material.
Materials and Methods: The study was exempt from the ethical review board. It was designed as a proof of concept. Von Mises stress distribution was calculated using COMSOL Multiphysics based on 4 different restorative materials: amalgam, composite, glass-ionomer and gold for a single wax tooth with a deep cavity. The Composite was chosen based on the size of the cavity and stress distribution as the most appropriate material. The restoration was completed using a custom-made robot that deposited composite into cavity
incrementally. UV light was used to set the material.
Results: Composite was selected based on its superior properties in comparison to the other materials; Von Mises stresses 114.85 under a masticatory load of 100 MPa. A servo motor was used to control the composite increment deposition from the reservoir through a piston. Each increment was cured. This motion was repeated until the cavity was adequately filled as identified through the camera.
Conclusion: Light cured composite was the most appropriate filling material selected following simulations generated through COMSOL Multiphysics. Simulations on COMSOL using DICOM images from prepared teeth can be coupled with a filling dispension robot to automate the filling process.
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