Surface topography and thickness of hybrid layer assessment after dentin pretreatment with egg shell powder as desensitizing agent | ||||
Egyptian Dental Journal | ||||
Article 32, Volume 64, Issue 4 - October (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), October 2018, Page 3845-3853 PDF (689.01 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/edj.2018.79359 | ||||
View on SCiNiTO | ||||
Authors | ||||
Ramy Abdallah1; Hadeel Farouk2; Mona E Essa3 | ||||
1Lecturer of Dental Material, Faculty of Dentistry For Boys, Alazhar University, Egypt | ||||
2Lecturer of Operative Dentistry, Faculty of Oral and Dental Medicine, Ahram Canadian University, Egypt. | ||||
3Associate Professor of Operative Dentistry, Faculty of Dentistry, Beni-Suef University, Egypt | ||||
Abstract | ||||
Objectives: The aim is to investigate the effect of Eggshell powder solution (ESPS) desensitizing agents as dentin surface pretreatments on thickness of hybrid layer of a direct resin composite restoration bonded with etch and rinse adhesive systems. Methods: A flat dentin occlusal surface will be prepared on extracted molar using a low speed diamond saw under water coolant. Teeth will be randomly divided into three main groups according to dentin surface pretreatment. First group, no dentin pretreatment (A1), second group Egg shell pretreatment applied before acid etching (A2) and third group, Egg shell pretreatment applied after acid etching (A3). A Teflon mold will be used to build up resin composite directly. Teeth will be sectioned perpendicular to adhesive joint to obtain 0.9±0.1 mm in thickness slabs. All samples will be examined under scanning electron microscope (SEM) and thickness of hybrid layer will be measured. Moreover energy dispersive analytical x-ray (EDAX) analysis will be used to count different minerals at tooth restoration interface. Results: The SEM analysis showed that; there are established significant differences in the thickness of hybrid layers among all tested groups. The EDAX analysis showed increased quantitative amounts of Ca atomic % and P atomic % for the ESS treated groups. Conclusion: Eggshell solution when used as desensitizing agent can significantly increase the hybrid layer thickness. | ||||
Keywords | ||||
Eggshell powder; Dentin; Hybrid layer thickness; Desensitizing agent | ||||
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