Assessment of Er:YAG laser for cavity preparation in primary and permanent teeth: a scanning electron microscopic and thermographic study

Al-Batayneh, Ola B., Seow, W. Kim and Walsh, Laurence J. (2014) Assessment of Er:YAG laser for cavity preparation in primary and permanent teeth: a scanning electron microscopic and thermographic study. Pediatric Dentistry, 36 3: 90-94.

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Name Description MIMEType Size Downloads
Author Al-Batayneh, Ola B.
Seow, W. Kim
Walsh, Laurence J.
Title Assessment of Er:YAG laser for cavity preparation in primary and permanent teeth: a scanning electron microscopic and thermographic study
Journal name Pediatric Dentistry   Check publisher's open access policy
ISSN 0164-1263
1942-5473
Publication date 2014-06-01
Sub-type Article (original research)
Open Access Status
Volume 36
Issue 3
Start page 90
End page 94
Total pages 5
Place of publication Chicago, IL, United States
Publisher American Academy of Pediatric Dentistry
Collection year 2015
Language eng
Formatted abstract
Purpose: Most studies of cavity preparation using Er:YAG lasers have employed permanent teeth. This study's purpose was to compare the cutting efficiency of an Er:YAG laser versus diamond burs in primary and permanent teeth in order to measure thermal effects on the pulp and evaluate lased surfaces using scanning electron microscopy (SEM).

Methods: A total of 80 primary and permanent teeth were used. Crater depths and mass loss were measured after delivering laser pulses at varying energies onto sound or carious enamel or dentin using the Key-3 laser. Control samples were cut using diamond burs in an air turbine handpiece. Thermal changes were measured using miniature thermocouples placed into the pulp chamber. Lased surfaces were evaluated using SEM.

Results: Laser ablation crater-like defects were deeper in dentin than enamel at the same pulse energy. Greater ablation rates for dentin and enamel and significantly more efficient removal of carious tooth structure by laser was present in primary teeth. Temperature rises in the pulp did not exceed the 5.5 degrees Celsius threshold in any teeth during laser ablation.

Conclusions: The Er:YAG laser is an efficient device for cavity preparations in primary teeth, with no unacceptable increases in temperature detected in this model.
Keyword Chidren
Laser
Primary teeth
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes http://www.ncbi.nlm.nih.gov/pubmed/24960377 PMID: 24960377

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Dentistry Publications
 
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Created: Wed, 18 Feb 2015, 16:24:48 EST by Professor Laurence Walsh on behalf of School of Dentistry