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[An in-vitro study to remove dental resin adhesive with ultrafast laser]
Xiao-Yan Yang1, Li Zeng, Sheng-Jia Ye
1Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology. Shanghai 200011, China.
Purpose:
To investigate the effect and safety of removing dental resin adhesive with ultrafast laser.
Methods:
Resin adhesive layers were prepared on the surface of extracted teeth and processed with ultrafast laser scanning. Morphology was observed under optical microscope and scanning electron microscope. Component change was tested with Raman Spectrometer and dental tissue damage was observed through sample sections.
Results:
After laser processing, resin adhesive showed significant change in colour and volume expansion along with laser parameters. Dislodgement happened without any external force. Carbonization was presented in Raman spectroscopy result. No obvious damage was observed in enamel underneath.
Conclusions:
Ultrafast laser can be used to remove dental resin adhesives on the enamel.
