scholarly journals Influence of an 810-nm diode laser on the temperature changes of the external root surface: An in vitro study

2020 ◽  
Vol 10 (4) ◽  
pp. 445
Author(s):  
NjwanF Shehab ◽  
NawalA Al-Sabawi ◽  
EmadF Alkhalidi
Keyword(s):  
Diode Laser ◽  
In Vitro Study ◽  
Root Surface ◽  
Vitro Study ◽  
Temperature Changes

scholarly journals COMPARATIVE STUDY OF THE THERMAL EFFECT OF TWO KINDS OF OPTIC FIBRES OF HIGH INTENSIVE 810 NM DIODE LASER (IN VITRO STUDY)

2021 ◽  
Vol 27 (1) ◽  
pp. 3523-3528
Author(s):  
Raya Grozdanova-Uzunova ◽  
◽  
Elka Radeva ◽  
Dimitar Kosturkov ◽  
Evgeniya Popova ◽  
...  
Keyword(s):  
Diode Laser ◽  
Optical Fibers ◽  
Light Guide ◽  
In Vitro Study ◽  
Root Surface ◽  
Quartz Fiber ◽  
Temperature Changes ◽  
Root Canals ◽  
Organically Modified

Purpose: The aim of our in vitro study is to investigate the thermal changes on the outer root surface that occur after irradiation with a high intensive diode laser with two types of optical fibers. Material and Methods: The root canals of 24 extracted single-rooted and multi-rooted teeth (59 root canals) were prepared with Pro Taper Gold to F3 and treated with 810 nm diode laser for 8 s with circular movements from apex to orifices. Teeth are divided into two groups. A quartz light guide is used in the first group, and in the second group, the root canals are treated with an organically modified quartz light guide. The temperature changes were detected with FLIR - Т 330 Infrared Thermal Camera and the data was processed with FLIR Reporter 9 Professional software. Results: In 90% of cases, the temperature rise on the outer root surface is up to 8°C. In the first group with quartz fiber, the minimum increase in temperature is 2°C, the maximum is 11°C (in the cases with four root canals). When using the organically modified quartz fiber, the registered minimum increase in temperature is 1.2°C and maximum increase of 9.2°C (in cases with curved canals). Conclusion: Temperature changes on the outer root surface using an 810 nm diode laser are biocompatible. There is no statistically significant difference between the temperatures measured in the two types of optical fibers used - quartz and organically modified quartz light.

In vitro study of temperature changes of external root surface during photo-activated disinfection

2012 ◽  
pp. S217-.
Author(s):  
Y Galabov ◽  
M Dencheva ◽  
T Gueorgieva ◽  
A Kadieva ◽  
A Kisselova ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Root Surface ◽  
Vitro Study ◽  
Temperature Changes

scholarly journals Diode Laser Irradiation in Endodontic Therapy through Cycles - in vitro Study

2017 ◽  
Vol 21 (2) ◽  
pp. 108-111 ◽  
Author(s):  
Dijana Trišić ◽  
Bojana Ćetenović ◽  
Igor Jovanović ◽  
Elizabeta Gjorgievska ◽  
Branka Popović ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Temperature Variation ◽  
Diode Laser ◽  
Output Power ◽  
In Vitro Study ◽  
Root Surface ◽  
Vitro Study ◽  
Continuous Mode ◽  
Laser Systems

Summary Background/Aim: The aim of this in vitro study was to investigate the influence of irradiation cycles and resting periods, on thermal effects on the external root surface during root canal irradiation of two diode laser systems (940 nm and 975 nm), at output powers of 1 W and 2 W in continuous mode. In previous studies the rising of temperature above 7°C has been reported as biologically accepted to avoid periodontal damage on the external root surface. Material and Methods: Twenty human inferior incisors were randomly distributed into four groups, the 940 nm, and the 975 nm diode laser irradiation, both with an output power of 1 W and 2 W, in continuous mode. The thermographic camera was used to detect temperature variations on the external root surface. Digital radiography of the samples was made. Results: After three cycles of irradiation, at apical third of the root, mean temperature variation by 940 nm diode laser irradiation was 2.88°C for output power of 1 W, and 6.52°C for output power of 2 W. The 975 nm laser caused a higher temperature increase in the apical region, with temperature variation of 13.56°C by an output power of 1 W, and 30.60°C at 2 W, with a statistical significance of p ≤ 0.0001 between two laser systems compared for the same power. The resting periods of 20 s between cycles were enough to lower temperature under 7°C in the case of 1 W and 2 W for 940 nm diode laser, while for 975 nm laser, after three irradiation cycles overheating occurred at both output power rates. Conclusion: Three cycles irradiation of 940 nm diode laser, with resting periods of 20 seconds, allowed safe usage of 1 W and 2 W in CW for endodontic treatment. For 975 nm at a power rate of 1 W, the last resting period drop the temperature near the safe limit and it came under 7°C in a period less than a minute, while at the power of 2 W the resting periods were not long enough for the safe temperature decrease.

scholarly journals TEMPERATURE CHANGES ON THE EXTERNAL ROOT SURFACE DURING POST SPACE PREPARATION (in vitro study)

2017 ◽  
Vol 23 (4) ◽  
pp. 1839-1844
Author(s):  
Elka N. Radeva ◽  
◽  
Desislava Tsanova-Tosheva ◽  
Alexander Bonchev ◽  
Natali Tsvetanova ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Root Surface ◽  
Vitro Study ◽  
Temperature Changes ◽  
Post Space

scholarly journals Comparative Evaluation of Root Surface Changes by Air-Polishing using Glycine and Chlorhexidine Acetate Powder: An in-vitro Study

2017 ◽  
Vol 1 (1) ◽  
pp. 7-11
Author(s):  
Hardi Rajanbhai Shukla ◽  
Aditi Mathur ◽  
Neema Shetty ◽  
Barkha Makhijani ◽  
Balaji Manohar
Keyword(s):  
In Vitro Study ◽  
Root Surface ◽  
Periodontal Therapy ◽  
Vitro Study ◽  
Tooth Surface ◽  
Air Polishing ◽  
Biofilm Removal ◽  
Stain Removal ◽  
Surface Changes

Background: Biofilm removal is the central part of the etiotropic and maintenance phase of periodontal therapy. Commercially available injection water jets such as Prophy-Jet allows an efficient and convenient biofilm removal as an adjunct to mechanical periodontal therapy. But, due to the abrasive nature of traditionally used air polishing powders such as sodium bicarbonate, there is a continuous research going on for less abrasive materials. Aims: To compare the effectiveness of air polishing using glycine powder and chlorhexidine acetate powder on tooth surface as compared to ultrasonic scaling and also to evaluate the time taken for stain removal. Materials and Methods: Thirty fully erupted, single rooted teeth extracted due to poor periodontal prognosis were used in this in-vitro study. The sample teeth were divided into 3 equal groups and stained in coffee solution. The test Groups A and B underwent air-polishing with glycine powder and chlorhexidine acetate powder respectively. Group C was control group and underwent ultrasonic scaling. Time taken for stain removal was recorded. The sample teeth were also evaluated under a stereo-microscope and digital micrometer preprocedurally and post-procedurally to measure surface changes. Results: The study showed statistically significant results (p<0.05) when measurements of changes in surface roughness of samples treated with glycine powder air-polishing were compared with ultrasonic scaling and chlorhexidine acetate powder air-polishing were compared with ultrasonic scaling. Surface texture loss as well as time taken for stain removal was minimum with glycine powder and maximum with ultrasonic scaling. Conclusion: Air-polishing with glycine powder was least abrasive on root surface followed by chlorhexidine acetate powder air-polishing. This is because of the lower particle size of glycine which also covers larger area in lesser time.  

scholarly journals Erratum to: Bactericidal effect of visible light in the presence of erythrosine on Porphyromonas gingivalis and Fusobacterium nucleatum compared with diode laser, an in vitro study

LASER THERAPY ◽  
2014 ◽  
Vol 23 (4) ◽  
pp. 263-271 ◽  
Author(s):  
Ghanbari Habiboallah ◽  
Zakeri Mahdi ◽  
Naderi Nasab Mahbobeh ◽  
Zareian Jahromi Mina ◽  
Faghihi Sina ◽  
...  
Keyword(s):  
Visible Light ◽  
Diode Laser ◽  
Porphyromonas Gingivalis ◽  
In Vitro Study ◽  
Fusobacterium Nucleatum ◽  
Bactericidal Effect ◽  
Vitro Study
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