Safety Irradiation Parameters of Nd:YAP Laser Beam for Endodontic Treatments: An In Vitro Study
| Autor: | Samir Nammour, Toni Zeinoun, R. J. G. De Moor, Sabine Geerts, Amaury Namour |
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| Rok vydání: | 2016 |
| Předmět: |
Male
Periodontal tissue medicine.medical_specialty Materials science Article Subject lcsh:Medicine Dentistry Lasers Solid-State Dental Caries General Biochemistry Genetics and Molecular Biology Endodontics law.invention 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine law Thermocouple Medicine and Health Sciences INJURY medicine Dentin Humans In vitro study Irradiation Laser beams General Immunology and Microbiology DENTIN business.industry lcsh:R ND-YAP LASER 030206 dentistry General Medicine Laser medicine.anatomical_structure ER Female Safety BONE business Root Canal Preparation Research Article Biomedical engineering |
| Zdroj: | BioMed Research International, Vol 2016 (2016) BIOMED RESEARCH INTERNATIONAL BioMed Research International |
| ISSN: | 2314-6141 2314-6133 |
| DOI: | 10.1155/2016/4741516 |
| Popis: | Objective. Nd:YAP laser has several potentialities of clinical applications in endodontics. The aim of our study is to determine the safety range of irradiation parameters during endodontic application of Nd:YAP laser that can be used without damaging and overheating the periodontal tissue.Material and Methods. Twenty-seven caries-free single-rooted extracted human teeth were used. Crowns were sectioned to obtain 11 mm root canal length. Temperature increases at root surfaces were measured by a thermocouple during Nd:YAP laser irradiation of root canals at different energy densities. Canal irradiation was accomplished with a circular and retrograde movement from the apex until the cervical part of the canal during 10 seconds with an axial speed of 1 mm/s. Each irradiation was done in a canal irrigated continuously with 2.25% NaOCl solution.Results. Periodontal temperature increase depends on the value of energy density. Means and standard deviations of temperature increases at root surfaces were below 10°C (safe threshold level) when the average energy densities delivered per second were equal to or below 4981 J/cm2and 9554 J/cm2, respectively, for irradiations using a fiber diameter of 320 μm and 200 μm.Conclusions. Within the limitations of this study and under specific irradiation conditions, Nd:YAP laser beam may be considered harmless for periodontal tissues during endodontic applications. |
| Databáze: | OpenAIRE |
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