Anzeige
Erschienen in:
06.02.2018 | Original Article
In vitro study: conventional vs. laser (Er,Cr:YSGG) subgingival scaling and root planing; morphologic analysis and efficiency of calculus removal using macroscopic, SEM and laser scanning
Erschienen in: Lasers in Dental Science | Ausgabe 2/2018
Einloggen, um Zugang zu erhaltenAbstract
ᅟ
Many ways and techniques were used for subgingival calculus removal to be achieved, from scaling and root planning closed and opened technique, manual curettes, air abrasives, and finally dental lasers machines.
Material and methods
In this study, we will compare conventional ultra-sonic scaling and curettes to two laser groups using Er,Cr:YSGG 2780 nm. One group (LASER) using 25 mJ, 50 Hz, 50 μs pulse duration, 20 ms pulse period, 1.25 W average power, 500 W peak power W/A:80%/10%, and other group (LASER+) using manufacturer instructions: 47 mJ, 75 Hz, 50 μs pulse duration, 3.5 W average power, 940 W peak power, W/A 40%, 20%. Fifteen extracted teeth that have subgingival calculus was used in each group.
Results
Showed no statistical difference between time in three groups, there was a statistical difference concerning the amount of calculus, group laser + showed least amount of calculus remaining. Root roughness showed statistical significant, the laser + treatment shows significant higher root values than the laser treatment as well as compared to conventional treatment. Laser scanning showed no statistical difference concerning root roughness. SEM showed conventional group with roughness and smear layer, laser group showed the most smooth surface, laser + showed the most rough surface.
Conclusion
Er,Cr:YSGG is effective and efficient to remove subgingival calculus and safe to the pulp specially the parameters of laser group, as well as it is benefits concerning smear layer removal, bactericidal effect, promoting fibroblasts attachment and mostly few raise in pulpal temperature as shown in other studies. Amount of water spray is considered to be the most important factor due to it is effect on roughness and root morphology.