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Dentinal tubule occlusion using Er:YAG Laser: an in vitro study
Hongmin Zhuang1,2, Yuee Liang1, Shaowen Xiang3
1Southern Medical University, Nanfang Hospital, Department of Stomatology, Guangzhou, Guangdong, China.
Journal of Applied Oral Science : Revista FOB
|April 7, 2021
Summary
The Er:YAG laser at 0.5 W effectively occludes dentinal tubules for treating hypersensitivity. This parameter is safe for pulp tissue with minimal temperature increase.
Area of Science:
- Dentistry
- Biomedical Engineering
- Laser Applications
Background:
- Dentin hypersensitivity is a common clinical condition.
- Effective treatment requires occluding dentinal tubules.
- Er:YAG lasers are explored for minimally invasive dental treatments.
Purpose of the Study:
- To determine optimal Er:YAG laser parameters for dentinal tubule occlusion.
- To assess the effects on intrapulpal temperature and pulp morphology.
- To establish safe and effective laser settings for dentin hypersensitivity.
Main Methods:
- Extracted human molars were divided into groups for control, desensitizer, and varying Er:YAG laser parameters.
- Scanning electron microscopy (SEM) evaluated dentinal tubule occlusion.
- Intrapulpal temperature and pulp tissue morphology were assessed for safety.
Main Results:
- Er:YAG laser at 0.5 W (167 J/cm2) demonstrated superior dentinal tubule occlusion.
- Intrapulpal temperature remained below the threshold, even without cooling.
- No significant adverse morphological changes were observed in pulp tissue or odontoblasts.
Conclusions:
- 0.5 W (167 J/cm2) is an optimal parameter for Er:YAG laser treatment of dentinal hypersensitivity.
- This laser setting effectively occludes dentinal tubules.
- The chosen parameters are safe for dental pulp tissue.
