title: Effect of three different core materials on the fracture resistance of endodontically treated deciduous mandibular second molars: an in vitro study.
abstract: Endodontic treatment makes the tooth brittle due to loss of bulk of tooth structure, decrease in the moisture content of dentin and dentin elasticity. The following study was carried out to evaluate the effect of endodontic treatment on the fracture resistance of the tooth and reinforcing ability of three different core materials. The following study comprised of sample size of 30 deciduous second molars divided into control group (6) and test group (24). Access opening was done in 24 and 18th teeth with access opening were restored with three different core materials namely IRM (6), silver amalgam (6), GIC (6). All the 30 were subjected to fracture test using UTM (Universal testing machine)- Instron 95. Result showed a drastic reduction in the fracture resistance of the tooth on access opening (1/3rd) and out of the three core materials glass ionomer was shown to be the best core material giving the highest fracture registrance followed by silver amalgam and IRM.
authors.affiliation: Department of Pedodontics and Preventive Dentistry, BVDU Dental College and Hospital, Pune, Maharashtra India. preetamshah@hotmail.com
authors.forename: Preetam
authors.initials: P
authors.lastname: Shah
authors.forename: Sachin C
authors.initials: SC
authors.lastname: Gugwad
authors.forename: Chetan
authors.initials: C
authors.lastname: Bhat
authors.forename: Rahul
authors.initials: R
authors.lastname: Lodaya
mesh_terms: D003723:Dental Amalgam / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry*; D003793:Dental Restoration, Permanent / Q000379:methods*; D003799:Dental Stress Analysis / Q000295:instrumentation; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008768:Methylmethacrylates / Q000737:chemistry; D008963:Molar / Q000473:pathology*; D011670:Pulpectomy / Q000379:methods; D018915:Root Canal Preparation / Q000379:methods; D012834:Silver / Q000737:chemistry; D014082:Tooth Fractures / Q000503:physiopathology*; D014094:Tooth, Deciduous / Q000473:pathology*; D019553:Tooth, Nonvital / Q000628:therapy*; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry
chemical_list: D003764:Dental Materials; D005899:Glass Ionomer Cements; D008768:Methylmethacrylates; D015035:Zinc Oxide-Eugenol Cement; D012834:Silver; C031667:IRM cement; D003723:Dental Amalgam