Cuspal Fracture Resistance and Micro Leakage in Composite Amalgam Combined Restoration Singh Arvinoerpal, Professor, Lata O.A., Professor and Head, Oeo Bharathi, Professor, Monga Prashant, Senior lecturer, Malahan Sunil, Professor Address for Correspondence: Dr. Arvinder Pal Singh, Professor, Department of Conservative Dentistry and Endodontics, Institute of Dental Sciences, Jammu. E-mail: drarvinder7975@rediffmail.com
Online published on 1 May, 2012. Abstract Objective Cuspal fracture resistance of molars with undennined enamel restored with combined Composite-Amalgam restoration, Composite restoration & Bonded amalgam restoration is compared along with micro leakage at different interfaces. Study design 42 intact impacted 3rd molars were collected & divided in four groups of 12 each. Ideal class I cavity prepared in all the teeth and then enamel of class I cavity of last three groups is undennined. These last three groups are restored with combined Composite-Amalgam restoration, Composite resin & Bonded amalgam restoration. 1st group without undennined enamel restored with Bonded amalgam. These teeth immersed in Indian ink dye for 72 hours after application of nail varnish leaving the cavity margins. Afterthatfracture strength & micro leakage atvarious interfaces is measured. Result Group I has highest fracture resistance with lowest of group III, and micro leakage maximum at amalgam tooth interface Conclusion Composite Amalgam combined restoration reinforce the tooth structure via micromechanical bonding and micro leakage is minimum between composite tooth interface followed by composite amalgam interface. So undennined enamel can be saved by restoring with composite amalgam combined restoration. Top Keywords Scotchbond Multipurpose Plus, Scotch bond Multipurpose, Indian ink dye, Stereomicroscope. Top |