title: Effect of different burs on the topography of smear layer formation on the dentinal surface: a scanning electron microscope study.
abstract: Whenever a hand or a rotary instrument is used to eliminate tooth tissue, the mineralized matrix shatters rather then being uniformly sheared, producing considerably quantities of cutting debris. Much of the debris made up of very small particles of mineralized collagen matrix over the surface of dentin is known as smear layer. The clinical outcome of dental restorations is dependent upon the surface preparations, smear layer formation and hybrid layer which which provides a stable adhesion. Different surface morphology is produced by use of different burs. The thickness of the smear layer is affected by various factors as type of the bur, use of water spray and speed of rotation. Bonding is enhanced when smear layer is completely removed or modifed. The purpose of this in vitro study is to evaluate the effect of different burs on the topography of the smear layer formation and thickness on dentinal surface.
authors.affiliation: Senior Lecturer, Department of Conservative Dentistry and Endodontics Narsinhbhai Patel Dental College and Hospital, Visnagar Gujarat, India.
authors.forename: Pooja
authors.initials: P
authors.lastname: Trivedi
authors.affiliation: Assistant Professor, Department of Conservative Dentistry and Endodontics Pacifc Dental College, Udaipur, Rajasthan, India.
authors.forename: Moulshree
authors.initials: M
authors.lastname: Dube
authors.affiliation: Lecturer, Department of Conservative Dentistry and Endodontics Goenka Research Institute of Dental Science, Gandhinagar Gujarat, India.
authors.forename: Mihir
authors.initials: M
authors.lastname: Pandya
authors.affiliation: Professor, Department of Conservative Dentistry and Endodontics Narsinhbhai Patel Dental College and Hospital, Visnagar Gujarat, India.
authors.forename: Hitesh
authors.initials: H
authors.lastname: Sonigra
authors.affiliation: Professor and Head, Department of Conservative Dentistry and Endodontics Narsinhbhai Patel Dental College and Hospital, Visnagar Gujarat, India.
authors.forename: Kiran
authors.initials: K
authors.lastname: Vachhani
authors.affiliation: Reader, Department of Conservative Dentistry and Endodontics Narsinhbhai Patel Dental College and Hospital, Visnagar Gujarat, India.
authors.forename: Kailash
authors.initials: K
authors.lastname: Attur
mesh_terms: D017554:Carbon Compounds, Inorganic / Q000737:chemistry; D003094:Collagen / Q000648:ultrastructure; D001840:Dental Bonding; D003804:Dentin / Q000648:ultrastructure*; D018130:Diamond / Q000737:chemistry; D004867:Equipment Design; D006801:Humans; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D012399:Rotation; D017655:Silicon Compounds / Q000737:chemistry; D016369:Smear Layer / Q000648:ultrastructure*; D007507:Therapeutic Irrigation / Q000379:methods; D019246:Tooth Preparation / Q000295:instrumentation*; D017973:Tungsten Compounds / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D017554:Carbon Compounds, Inorganic; D017655:Silicon Compounds; D017973:Tungsten Compounds; D014867:Water; C002802:tungsten carbide; D018130:Diamond; D003094:Collagen; C022088:silicon carbide