Objectives: The objective of this study was to evaluate the effect of 12 different dentin desensitizing agents (DDAs) on the shear bond strength of a one step self- etch adhesive to dentin.Materials and Methods: To that end, one hundred ninety-five intact human mandibular third molar teeth were used in this study. The buccal cervical enamel tissues of teeth were removed to expose cervical dentin. The teeth were randomly divided into 13 treatment groups (n=15).Twelve different DDAs (Smart Protect, Systemp Desensitizer, Seal&Protect, Aqua-Prep F, Isodan, Gluma, BisBlock, UltraEZ, D/Sense Crystal, Colgate Sensitive Pro- Relief, Topex ve Clinpro White Varnish) were applied to dentin surfaces according to manufacturers’instructions. No desensitizing treatment was applied to group 13. After desensitizing treatment, all specimens were kept in artificial saliva for 14 days at 37 °C. At the end of this soaking period, all specimen were taken out of the saliva, rinsed with water and dentin surfaces were brushed 8-10 times in circular motion. Clearfil Tri-S Bond (Kuraray Medical Inc, Japan) was applied to dentin surfaces according to manifacturers’ instructions. A microhybride composite resin (Filtek Z 250, 3M ESPE, St Paul, MN, USA) was applied to dentin surfaces according to manifacturers’ instructions by means of cylindrical tubes. Prepared specimens were stored in distilled water and kept in the etuve at 37°C for 24 hours. Shear bond strength test were performed by using Universal Tension/Compression Testing Machine (Instron 3382, USA). The occlusive effect of DHGA on dentin tubuls were examined with SEM by preparing three specimens for each group. The significance of the differences between groups within shearbond strength was investigated with One-Way Analysis of Variance (One-Way ANOVA) and post hoc Tukey test. The mean difference is significant at the 0.05 level.Results: The shear bond strength values of D/Sense Crystal, Topex ve Clinpro White Varnish groups were found statistically lower than the control group (p<0.05). There was no statistically significant difference between the control group and the other groups (Smart Protect, Systemp Desensitizer, Seal&Protect, Aqua-Prep F, Isodan, Gluma, BisBlock, UltraEZ, Colgate Sensitive Pro- Relief)Conclusions: In this in vitro study, the application of DDAs which contain fluoride and potassium oxalate reduced the resin-dentin shear bond strength of a one step self-etch adhesive. The possible reason of this situation could be that the penetration of the self-etch adhesive resin that had weak acidity to dentin tubules was prevented by dentin plugs that were produced by these agents as viewed on SEM investigations
Amaç: Bu çalışmanın amacı içerikleri farklı 12 adet dentin hassasiyet giderici ajanın (DHGA) bir
self-etch adeziv rezinin makaslama bağlanma dayanımına etkisinin belirlenmesidir.
Gereç ve Yöntem: Bu çalışmada kullanılmak üzere 195 adet çürüksüz daimi alt 3. molar
dişin bukkal yüzeyindeki dentin dokusu açığa çıkacak şekilde mine dokusu uzaklaştırıldı.
Dentin örnekleri rastgele 13 gruba ayrıldı (n=15). On iki farklı DHGA (Smart Protect, Systemp
Desensitizer, Seal&Protect, Aqua-Prep F, Isodan, Gluma, BisBlock, D/Sense Crystal, UltraEZ,
Colgate Sensitive Pro- Relief, Topex ve Clinpro White Varnish) uygulama talimatlarına göre
dentin yüzeylerine uygulandı. Kontrol grubuna DHGA uygulanmadı. Dentin örnekleri 14 gün
boyunca 37°C’de yapay tükrük içinde bekletildi. Sonra yumuşak bir diş fırçası yardımıyla dentin
yüzeyindeki kalıntılar 8-10 kez uygulanan dairesel hareketlerle uzaklaştırıldı.
Clearfil Tri-S Bond (Kuraray Medical) dentin yüzeylerine uygulandıktan sonra silindirik
kalıplar yardımıyla kompozit rezin (Filtek Z 250, 3M ESPE, USA) dentin yüzeyine uygulandı.
Hazırlanan örnekler 24 saat boyunca distile suda, 37 ºC’de, etüvde bekletildi. Makaslama
bağlanma dayanımının ölçüm testleri Universal Çekme-Basma Test Sistemi (Instron 3382, USA)
kullanılarak yapıldı. Her bir grup için 3 adet dentin örneği hazırlanarak DHGA’nın dentin tübül
tıkaç etkinliği SEM ile incelendi.
Gruplar arasında bağlanma dayanımı yönünden farkın önemliliği Tek Yönlü Varyans Analizi
(One-Way ANOVA) ve post hoc Tukey testi kullanılarak tespit edildi. p0.05).
Sonuçlar: Bu in vitro çalışmada fluorür ve potasyum okzalat içeren DHGA uygulamaları tek
aşamalı bir self-etch adezivin rezin-dentin makaslama bağlanma dayanım değerinde azalmaya
neden olmuştur. Bunun muhtemel nedeni SEM incelemelerinde görüntülendiği gibi bu ajanların
oluşturduğu dentin tübül tıkaçlarının, zayıf asiditesi olan self-etch adezivin dentin tübüllerine
penetrasyonunu engellemesi olabilir.
dentin hassasiyeti hassasiyet giderici ajanlar makaslama bağlanma dayanımı self-etch adeziv
Primary Language | Turkish |
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Journal Section | Original Research Articles |
Authors | |
Publication Date | April 5, 2014 |
Submission Date | April 5, 2014 |
Published in Issue | Year 2014Volume: 17 Issue: 4 |
Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.
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