关键词: 铒激光, 龋病, 牙釉质, 牙本质

Abstract: With the development of technology，laser has been widely used in dentistry. The most frequently used laser in caries management is Er laser. It is minimally invasive，gentle and without vibration，providing satisfactory treatment experience for patients. Nowadays，there has been new development in the operating principle and clinical effect of it. Under different laser energy parameters，it can be used to perform tissue cutting and tissue management and achieve different effects. In this paper，we focus on the basic and clinical studies of Er laser in caries management，in order to provide references for the future study design and clinical practice.

Key words: Er laser, caries, enamel, dentin