Structural design of a cartesian coordinate tooth-arrangement robot
Aiming to the problem of time-consuming and low precision of the traditional tooth-arrangement methods, a conception of a professional and miniature Cartesian coordinate type robot for tooth-arrangement was put forward in this paper. Based on the analysis of tooth-arrangement process, the design scheme of tooth-arrangement robot were determined. We also build the whole three-dimensional model of Cartesian coordinate type robot of tooth-arrangement after functional analysis of every function module of tooth-arrangement robot. Finally, the kinematics simulation analysis of robot model using ADAMS is performed, and the results indicates that it is feasible and practical to realize the scheme design and structural design of Cartesian coordinate tooth-arrangement robot.
Tooth arrangement for the manufacture of a complete denture using a robot
The successful application of robots in surgery and other medical fields prompts us that robots can also play an important role in oral restoration. The traditional way of complete denture manufacturing is manual and only high‐level dentists and skilled technicians can do this work well. But we believe that a robot can do this work better and more easily. Artificial teeth are very complicated in shape, and not easy to be grasped and manipulated accurately by a robot gripper. Aiming at improving our previous robot manufacturing system of complete dentures, we present a new method to perform teeth implanting. We improve the previous manufacturing procedure by adding several components in the operating process. By this method, the robot gripper only needs to grasp and implant intermediate blocks, which have very simple shapes and are easy to handle precisely. The 3D human‐machine tooth arrangement software performs the calculation of intermediate blocks’ positions and orientations. We perform the experiment of tooth arrangement for a patient, and obtain a pair of ideal tooth arches. A complete denture can be manufactured according to this result.
[A scanning method for the dental casts of intercuspal position].
OBJECTIVE
To acquire the 3D point-cloud of the dental casts of intercuspal position and rebuild it in computer.


METHODS
A special scanning method was used to acquire the point-cloud of dental cast by using the D.02-L-3D SCANNER and rebuild the model by computer.


RESULTS
The method could acquire a 3D model with high resolving power and clear-cut dental anatomic configuration for the dental casts of intercuspal position.


CONCLUSION
This is a viable method of scanning with many advantages, such as precision, simplicity, high efficiency. It could satisfy the requirements of clinical practice, teaching and scientific research.