Abdallah, R., Farouk, H., Essa, M. (2018). Surface topography and thickness of hybrid layer assessment after dentin pretreatment with egg shell powder as desensitizing agent. test, 64(Issue 4 - October (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), 3845-3853. doi: 10.21608/edj.2018.79359
Ramy Abdallah; Hadeel Farouk; Mona E Essa. "Surface topography and thickness of hybrid layer assessment after dentin pretreatment with egg shell powder as desensitizing agent". test, 64, Issue 4 - October (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), 2018, 3845-3853. doi: 10.21608/edj.2018.79359
Abdallah, R., Farouk, H., Essa, M. (2018). 'Surface topography and thickness of hybrid layer assessment after dentin pretreatment with egg shell powder as desensitizing agent', test, 64(Issue 4 - October (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), pp. 3845-3853. doi: 10.21608/edj.2018.79359
Abdallah, R., Farouk, H., Essa, M. Surface topography and thickness of hybrid layer assessment after dentin pretreatment with egg shell powder as desensitizing agent. test, 2018; 64(Issue 4 - October (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)): 3845-3853. doi: 10.21608/edj.2018.79359

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, Pages 3845-3853    PDF (689.01 K)
Document Type: Original Article
DOI: 10.21608/edj.2018.79359
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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