Naslov
Enamel pretreatment with Er:YAG laser: effects on bond strength of fissure sealant
(69th ORCA Congress)

Autori
Doberdoli, Dafina ; Jurić, Hrvoje

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
69th Congress of the European Organisation for Caries Research

Mjesto i datum
Cagliari, Italija, 29.06.2022. - 02.07.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
resina based ; sealant material ; microleakage

Sažetak
The aim of this study was to investigate the microleakage of self-adhesive composite resin (SACR) compared to conventional resin-based material as fissure sealing. Tight sealing is a key factor for successful caries protection. The effect of enamel etching on the marginal leakage of self-adhesive material was investigated. The study was conducted on 30 intact molars with well delineated pits and fissures. The first group of molars was sealed with SACR (Constic, DMG, Germany) without pre-treatment of enamel and in the second group the enamel was etched with 37% phosphoric acid. The control group was sealed with a conventional resin-based material (3M Clinpro Sealant, 3M Espe, Germany) and etched with 37 % phosphoric acid for 30 s. After thermocycling (1800 cycles, 10 s), the teeth were immersed in 50 % silver nitrate solution for 45 min and then placed in a developer (Kodak) under lamp (120W) for 6 h and then cut into four slices. The marginal leakage is assessed under a light microscope (scores 0 to 3). Statistical analysis was performed by Kruskal-Wallis and Mann-Whitney U test. Looking at the worst marginal leakage score for each sealant, there was no statistically significant difference between the groups (χ2 = 5.16, df = 2, p >0.05). Considering the depth of dye penetration, there was a significant difference between Clinpro Sealant (2±0.4) and SACR (U = 24.00, Z = 1.96, p <0.05). Teeth sealed with SACR with etching (1±0.4) and without etching (1.8±0.4) did not differ significantly (U = 41.00, Z = -0.68 ; p >0.05). It is concluded that SACR could be suitable for clinical use with and without enamel etching. Further study is needed to evaluate clinical retention rate.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

POVEZANOST RADA