Tiny Dental Robot Prepares Teeth for Crowns

A miniature intraoral robot, dubbed MIR, is under development at the University of Basel in Switzerland. This innovative device, measuring approximately 43 by 26 by 28 millimeters, is designed to prepare teeth for crowns more efficiently. The larger components of MIR are situated outside the patient's mouth, connected via flexible shafts, keeping the intraoral unit compact and comfortable.

MIR aims to digitize the crown preparation workflow, potentially reducing the need for multiple dental appointments. After a scan, dentists could use MIR to remove precise amounts of tooth material, allowing the permanent crown to be ordered sooner. The robot attaches to a custom splint, moving with the patient's head.

Tests on synthetic tooth models and ceramic materials show MIR achieving positional accuracy of less than 0.2 millimeters. The drilling forces are kept below five newtons, comparable to a half-liter water bottle's weight. Further research is ongoing regarding noise levels.

Before clinical use, MIR requires the addition of sensors and a camera for real-time monitoring and positional correction. Researchers are focusing on ensuring the robot can safely and accurately resume its task even after power interruptions, prioritizing patient safety.

The development involves collaboration between the University of Basel, the University of Zurich, and other research institutions, with sponsorship from Innosuisse. The long-term vision is a fully digital treatment process for crowns.