Effect of Temporary Cement on Bonded Dentin Surface of Permanent Resin Based Cement

Abstract

This in vitro study investigated the surface differences and tag formations of resin based cementson prepared dentin surfaces, which were precoatedwith eugenol and non-eugenol containing temporary cement by SEM. Fifteen human 3.molar teeth were used in thisstudy. Very wide and 3 mm deep occlusal cavitieswere prepared on 10 molar teeth. The other 5 teethwere used as control group. These cavities werefilled with eitherTempbond NE or Tempbond eugenol containing temporary cements.Specimens were thermocycled 200 times and storedfor 7 days in distilled water at 37°. After 7 days,remaining tooth structure outside the occlusal cavities was removed with water-cooled highspeed bursuntil temporary cement border. Temporary cementwas removed with sharp burs, surfaces werewashed and cleaned with water and airpressure.Resin-based cement was applied on thesesurfaces according to the manufacturer’s directions. In control group, tooth tissue was removed upto 3 mm deep from occlusal surface and resin-basedcement was applied on these surfaces similar to thetest group samples. After 24 hours, teeth were put in % 50orthophosphoric acid for 7 days and then bondedsurfaces were analyzed by SEM. Control groupshowed the best tag formation and collateral connections between tags. Groups treated with temporary cements produced shorter tags. Especiallyeugenol containing temporary cement showed veryshort tag formations. As a conclusion, use of eugenol containing temporary cement before resinbased cement applications had negative effects on tag formation.

Keywords

• Temporary cement, eugenol,resin-based cement, SEM analysis

GEÇİCİ YAPIŞTIRICI SİMANLARIN REZİN İÇERİKLİ DAİMİ YAPIŞTIRICILARIN DENTİNE BAĞLANMA YÜZEYLERİNE ETKİLERİ

Abstract

Bu in vitro çalışmada, öjenol içeren ve içermeyen geçici yapıştırıcı uygulanmış dentin yüzeylerine, resin esaslı yapıştırıcı siman uygulamasınınneden olduğu yüzey farklılıkları ve tag formasyonları SEM ile incelenmiştir.Çalışmada 15 adet insan 3.molar dişleri kullanıldı. On molar diş üzerine derinliği 3 mm olançok geniş okluzal kaviteler açıldı. Diğer 5 dişkontrol grubu olarak incelendi. Hazırlanan kaviteler Tempbond NE veya Tempbond öjenol içerikli geçici siman ile dolduruldu. Örnekler 7 gün 37 °Cde, distile suda bekletildi, daha sonra 200 defa termalsiklus uygulandı. Yedi gün sonunda örneklerinokluzal kavite dışında kalan diş yüzeyleri yüksekhızdaki frez ve su ile geçici siman sınırına kadaruzaklaştırıldı. Geçici siman keskin el aletleri ileuzaklaştırıldıktan sonra basınçlı hava ve su ileyıkandı ve temizlendi. Hazırlanan yüzeylere resinesaslı siman aşamaları üretici firma önerilerineuyularak uygulandı. Kontrol grup örneklerinde ise,okluzal yüzeyden itibaren 3 mm derinliğindeki dişdokusu su soğutmalı yüksek hızla çalışan frezler ilekaldırıldı ve bu yüzeylere rezin esaslı yapıştırıcısiman, diğer test grup örnekleri gibi uygulandı. 24saat sonra dişler % 50 ortofosforik asit içine konularak 7 gün bekletildi, daha sonra dişe yapışanyüzeyler SEM ile incelendi.Çalışma sonunda en iyi tag formlarının ve butagların kollateral bağlarının kontrol grubundakiörneklerde oluştuğu gözlendi. Geçici siman uygulanmış dişlerde kısa taglar gözlenirken özellikledaha önce ojenol içeren geçici siman uygulanmışörneklerde rezin tag formlarının çok daha kısaolduğu bulundu. Araştırmanın sonuçlarına göre,rezin esaslı yapıştırıcı siman kullanımından öncedentin yüzeyine uygulanan ojenol içerikli geçicisimanın bağlantıyı olumsuz yönde etkileyebileceğigözlendi

Keywords

• Geçici siman, öjenol,resin-esaslı siman, SEM analizi

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