In vitro evaluation of enamel demineralization around the brackets after Er-YAG laser irradiation and flouride application

Year 2018, , 235 - 242, 01.09.2018

Rıdvan Okşayan

https://doi.org/10.17343/sdutfd.337939

Abstract

Objective: The aim of this in vitro study was to investigate the
effects of a fluoridated agent and Er:YAG irradiation with
different doses, alone or in combination, on enamel resistance to
demineralization. Materials and Methods:
This study consisted of 80 premolars divided into eight groups: G1, untreated
(control); G2, Acidic Phosphate Fluoride (APF) for 4 min; G3, 0.50 W Er:YAG
laser; G4, 0.50 W Er:YAG laser + APF; G5, 0.75 W Er:YAG laser; G6, 0.75 W
Er:YAG laser + APF; G7, 1 W Er:YAG laser; G8, 1 W Er:YAG laser + APF. Brackets
were bonded to the buccal surfaces of premolars, and demineralization values
were measured before and after treatment from the gingival aspects of the
brackets, with DIAGNOdent. In last timepoint surface roughness was detected
with Atomic Force Microscopy (AFM). All groups were subjected to 5 and 9 days
of pH-cycling to produce artificial carious lesions. Data were tested using the
Kruskal-Wallis, Friedman and Duncan tests (p<0.05). Results: G1 and G7
demonstrated significant demineralization when compared to the initial
measurements to 5th day measurement (p<0.05). The other groups did not
reveal significant changes in the demineralization values (p>0.05). The best
surface was observed in the AFM records of group 4. Conclusion: Optimum Er:YAG laser
irradiation with settings has a positive effect on the decrease in
demineralization.

Keywords

Bracket, Demineralization, Er-YAG laser, Flouride

Braket çevresindeki mine demineralizasyonunun Er-YAG lazer ve florid uygulaması sonrası in-vitro olarak değerlendirilmesi

Abstract

Amaç: Bu in-vitro çalışmanın amacı; birlikte ve ayrı ayrı florür ve farklı dozlarda Er:YAG
lazer uygulamalarının, braket çevresindeki mine yüzeyinde oluşan demineralizasyona
karşı etkilerini incelemektir. Gereç ve
Yöntem: Bu çalışmada 80 üst daimi 1. premolar 8 grup olarak ayrılmıştır:
G1, kontrol; G2, asidik fosfat florit (AFF); G3, 0.50 W Er:YAG lazer ; G4, 0.50
W Er:YAG lazer + AFF; G5, 0.75 W Er:YAG lazer; G6, 0.75 W Er:YAG lazer + AFF;
G7, 1 W Er:YAG lazer; G8, 1 W Er:YAG lazer + AFF. Braketler premolarların
bukkal yüzeylerine yapıştırılmıştır. Demineralizasyon değerleri dişin gingival
ve braket arasındaki bölgede DIAGNOdent yardımıyla ölçülmüştür. Son ölçümde
yüzey düzensizliği Atomik Kuvvet Mikroskobu (AKM)
ile belirlenmiştir. Yapay çürük lezyonu oluşturmak için tüm gruplar 5 ve 9
günlük pH siklusuna tabi tutulmuştur. Veriler Kruskal-Wallis,
Friedman and Duncan istatistik testleri kullanılarak analiz edilmiştir (p<0.05).
Bulgular: G1 and G7 gruplarında istatistiksel olarak önemli derecede demineralizasyon
görülmüştür (p<0.05). Diğer grupların demineralizasyon değerlerinde
istatistiksel olarak önemli değişiklikler görülmemiştir (p>0.05). AFM
kayıtlarında en iyi yüzey görüntüsü grup 4’te saptanmıştır.

Sonuç: Uygun dozlarda Er-YAG lazer uygulamalarının
demineralizasyon üzerine pozitif etkileri bulunmaktadır.

Keywords

Braket, Demineralizasyon, Er-YAG lazer, Florür

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