KAMEL EARAR, VASILE IULIAN ANTONIAC, SORANA BACIU, SIMION BRAN, FLORIN ONISOR, CLAUDIA MILEA, AUREL MOHAN, RALUCA GRIGOROIU, ADRIANA SACELEANU, MARIUS MANOLE ETCHING TREATMENT EFFECT ON SURFACE MORPHOLOGY OF DENTAL STRUCTURES This study examined and compared surface of human dentine after acidic etching with hydrogen peroxide, phosphoric acid liquid and gel. Surface demineralization of dentin is necessary for a strong bond of adhesive at dental surface. Split human teeth were used. After application of mentioned substances at dentin level measures of the contact angle and surface morphology were employed. Surface morphology was analyzed with the help of scanning electron microscopy and atomic force microscopy. Liquid phosphoric acid yielded highest demineralization showing better hydrophobicity than the rest, thus having more contact surface. Surface roughness are less evident and formed surface micropores of 4 µm remained open after wash and air dry providing better adhesive canalicular penetration and subsequent bond.
Keywords: dentin demineralization; dentin etching; phosphoric acid for dentin etching