Dentin surface modification using the Er,Cr:YSGG laser and a meshwork mask: light and SEM microscopic observations

Area of Science:

• Biomaterials Science
• Dental Materials
• Laser Dentistry

Background:

• Achieving optimal bonding to dentin remains a challenge.
• Various techniques exist to improve material adhesion to dentin.
• Current methods have not yet yielded ideal bonding results.

Purpose of the Study:

• To evaluate surface modifications on dentin treated with Er,Cr:YSGG laser and a novel stainless steel mesh technique.
• To assess the potential of this method for enhancing mechanical retention.

Main Methods:

• Dentin surfaces of four teeth were treated with Er,Cr:YSGG laser.
• One group received standard laser treatment.
• The experimental group was treated with the laser while a 100 μm aperture stainless steel mesh covered the dentin.

Main Results:

• Standard laser treatment resulted in a rugged but relatively flat dentin surface.
• The mesh-masked laser treatment produced uniformly aligned craters approximately 100 μm wide and 150 μm deep.
• Distinct surface texture differences were observed between the two groups.

Conclusions:

• Masking dentin with a stainless steel mesh during Er,Cr:YSGG laser irradiation creates a unique surface topography.
• The resulting cratered surface texture shows potential for improved mechanical retention of dental materials.
• This technique offers a novel approach to dentin surface preparation for enhanced bonding.