Find a black spot on your tooth? Be safe and get it checked out. While it could be a stain, it might be a sign of something worse. “A black spot on your tooth shouldn’t be ignored,” says Tammy D.

Abstract: This article proposes a multi-auxiliary-teeth pole-changing machine based on zero-sequence current. Through changing the direction of the zero-sequence current, the excitation flux field is ...

Abstract: Automatic tooth alignment target prediction is vital in shortening the planning time of orthodontic treatments and aligner designs. Generally, the quality of alignment targets greatly ...