EUROPEAN JOURNAL OF
PHARMACEUTICAL AND MEDICAL RESEARCH

( An ISO 9001:2015 Certified International Journal )

An International Peer Reviewed Journal for Pharmaceutical, Medical & Biological Sciences

An Official Publication of Society for Advance Healthcare Research (Reg. No. : 01/01/01/31674/16)

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Abstract

INFLUENCE OF CO2 LASER POWERS IN THE TEMPERATURE OF PRIMARY ENAMEL

Rodrigo Alexandre Valério, Caio Cesar Pereira Simon, Luciano Bachmann, Silmara Aparecida Milori Corona and *Maria Cristina Borsatto

ABSTRACT

Objectives: Different types of CO2 laser power are used to irradiate primary teeth, however, the study of these powers has fundamental importance, since, the use of correct parameters prevent the occurrence of thermal damage to the pulp tissue. The aim of the present in vitro study was to evaluate the temperature change on specimens of primary enamel irradiated with different powers of CO2 laser. Methods: Fifteen sound primary molars were sectioned mesiodistally, resulting in 30 specimens (3.5x3.5x2.0 mm). Two small holes were made on the dentin surface using round bur in high speed turbine (1/4), in which K-type thermocouples were installed to evaluate thermal changes. Specimens were individually fixed with wax in Plexiglass cylinders and randomly assigned in 3 groups (n=10) according to the powers used: (A) 0.5 W, (B) 1.0 W and (C) 1.5 W. The CO2 laser (λ=10.6 µm) was applied in an ultrapulse mode (non-contact), 4 mm focal length, 20 Hz frequency, and beam diameter of 0.4 mm. Temperature reading was performed every 0.3 seconds for 30 seconds. Analysis of variance (ANOVA) were performed for the statistical analysis (p≤0,05). Results: CO2 laser powers provided no difference on the temperature changes on specimens of primary enamel, in which the following means were observed: (A) 49.32°C ± 11.87, (B) 44.75°C ± 8.3 and (C) 47.48°C ± 6.88. Conclusions: It can be concluded that the CO2 laser was not influenced by different powers (0.5W, 1.0W, 1.5W), used in the irradiation of primary enamel teeth fragments.

Keywords: Lasers, temperature, dental enamel, primary teeth.


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Google Scholar Indian Science Publications InfoBase Index (In Process) SOCOLAR, China Research Bible, Fuchu, Tokyo. JAPAN International Society for Research activity (ISRA) Scientific Indexing Services (SIS) Polish Scholarly Bibliography Global Impact Factor (GIF) (Under Process) Universal Impact Factor International Scientific Indexing (ISI), UAE Index Copernicus CAS (A Division of American Chemical Society) USA (Under Process) Directory of Open Access Journal (DOAJ, Sweden, in process) UDLedge Science Citation Index CiteFactor Directory Of Research Journal Indexing (DRJI) Indian citation Index (ICI) Journal Index (JI, Under Process) Directory of abstract indexing for Journals (DAIJ) Open Access Journals (Under Process) Impact Factor Services For International Journals (IFSIJ) Cosmos Impact Factor Jour Informatics (Under Process) Eurasian Scientific Journal Index (ESJI) International Innovative Journal Impact Factor (IIJIF) Science Library Index, Dubai, United Arab Emirates Pubmed Database [NLM ID: 101669306] (Under Process) IP Indexing (IP Value 2.40) Web of Science Group (Under Process) Directory of Research Journals Indexing Scholar Article Journal Index (SAJI) International Scientific Indexing ( ISI ) Scope Database Academia