[Research progress in the application of artificial intelligence in three-dimensional tooth shape completion]

Three-dimensional (3D) tooth shape completion refers to the process of predicting and reconstructing the intact tooth morphology based on defective 3D inputs obtained from intraoral or laboratory scanner. The generated result serves as a digital diagnostic wax-up, offering clinicians a visualized treatment target and outcome preview, thereby aiding in clinical diagnosis and treatment planning. This review summarizes the current applications of artificial intelligence in 3D tooth shape completion, focusing on major research progress in commonly used algorithmic models, datasets, ground truth acquisition, control model configuration, and evaluation metrics. It aims to provide guidance for future related studies.