the ridge in the mouth where the teeth are situated
the edge of a coating or surface, particularly in dental contexts
धातु की किनारा
English Usage: The technician ensured that the gumline of the dental restoration was perfectly smooth.
Hindi Usage: तकनीशियन ने सुनिश्चित किया कि दंत पुनर्स्थापना का धातु की किनारा बिल्कुल चिकना हो।