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  Dr Minh Nguyen
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The DELight is an Er:YAG dental laser system that has FDA approval for both hard- and soft-tissue applications. During laboratory evaluation, the DELight met all electrical safety standards, and made preparations on smooth surfaces that were as conservative as those made by a 329 bur. For more involved preparations (i.e., where lateral removal of tooth structure is required) the laser was as conservative as using and round fissure burs for the initial outline form. However, the laser's contact tips used during this evaluation were only end cutting and may not be as conservative as standard carbide burs for preparations that require lateral extension. Review of the literature suggests that Er:YAG laser treatment of dentin does not adversely affect the dentin's bond strength to common bonding agents.


  • Is FDA approved for soft- and hard-tissue applications.
  • Provides a conservative means for removing carious tooth structure.Laser dentin preparation does not appear to produce a traditional smear layer, which has been shown to interfere with the performance of some adhesive products.
  • Energy settings are provided by the manufacturer for various clinical uses.
  • Owner's manual is complete and easy to understand.
  • Relatively easy to set up.
  • Has a moderate, but gradual, learning curve.
  • Meets electrical safety standards.
  • Initial training on laser use and safety is provided by the manufacturer.
  • Required laser safety signs and glasses are provided by the manufacturer.


  • Expensive.
  • End-cutting nature of probe may not be as conservative for preparing tooth structure as using small carbide burs.
  • Requires meticulous attention during cleaning and sterilization procedures.
  • Does not totally replace the air-turbine handpiece.
  • Requires special protective eyeglasses.


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