title: Adhesion mechanism of polyelectrolyte cements to tooth structure--polyelectrolyte behavior of the cement polymers obtained by potentiometric titration in the presence of calcium ion.
abstract: Potentiomeric titration of aqueous solutions of polyacrylic acid and commercial polyelectrolyte cement polymers with sodium hydroxide solution was carried out in the presence of different concentrations of Ca2+. Polyelectrolytes all behave as weak acids without the coexisting Ca2+. However, in the presence of Ca2+, in amounts over one-half of the equivalent amount to the carboxyl group in the polymer, they have a strong acid-like behavior. This means that the carboxyl groups in the polymer chain tend to react strongly with coexisting Ca2+ as they are partially neutralized by the alkaline solution. This is also strong evidence supporting polyelectrolyte cement as an adhesion mechanism to tooth structure during cementation.
authors.forename: A
authors.initials: A
authors.lastname: Iioka
authors.forename: Y
authors.initials: Y
authors.lastname: Araki
authors.forename: K
authors.initials: K
authors.lastname: Matsuda
authors.forename: H
authors.initials: H
authors.lastname: Ohno
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D000268:Adhesiveness; D002118:Calcium / Q000737:chemistry; D003738:Dental Cements / Q000737:chemistry*; D004563:Electrochemistry; D007477:Ions; D008422:Materials Testing; D011199:Potentiometry
chemical_list: D000180:Acrylic Resins; D003738:Dental Cements; D007477:Ions; C006903:carbopol 940; D002118:Calcium