The leakage of filler elements from four composites after storage in water was investigated. The results showed that all fillers leaked Si, and that the micro-filled composite and the Ba- and Sr-containing glass composites leaked more Si than did the quartz-containing material. The leakage from the different fillers was explained by hydroxy-ion and stress-corrosion attacks.
Get full access to this article
View all access options for this article.
References
1.
Phillips, R.W. ; Avery, D.R.; Niehra , R.; Swartz, M.L.; and McCune , R.J.: Observations on a Composite Resin for Class II Restorations: Three-year Report, J Prosthet Dent30:891-897, 1973.
2.
Leinfelder, K.L.; Sluder, T.B.; Santos , J.F.F.; and Wall, J.T.: Five-year Clinical Evaluation of Anterior and Posterior Restorations of Composite Resin, J Op Dent5 :57-65, 1980.
3.
Bowen, R.L.: Compatibility of Various Materials With Oral Tissues. I.: The Components in Composite Restorations, J Dent Res58:1493-1503, 1979.
4.
Söderholm, K.-J. M.: Degradation of Glass Filler in Experi-Composites , J Dent Res60:1867-1875, 1981 .
5.
Beech, D.R. and Brown, D.: The Role of the Filler-Matrix Interface in Composite Restorative Materials Based on Polymethytmethacrylate, Br Dent J133:297-300, 1972,
6.
Söderholm, K.-J. M.: Relationship Between Compressive Yield Strength and Filler Fractions of PMMA Composites, Acta Odont Scand40:145-150, 1982.
7.
Charles, R.J. : Static Fatigue of Glass I, J Appl Phys29: 1549-1553, 1958,
8.
Bowen, R.L. and Reed, L.E.: Semi-porous Reinforcing Fillers for Composite Resins. I. Preparation of Provisional Glass Formulations, J Dent Res55:731-747, 1976.
9.
Ruyter, I.E. and Sjvik, I.J.: of Dental Resin Composite Materials , Acta Odontol Scand39:133-146,1981.
10.
Jacobsen, P.H. : The Current of Composite Restorative Materials , Br Dent J150:15-18, 1981.
11.
Moffa, J.P. and Jenkins, W.A.: Throe-year Posterior Clinical Evaluation of Three Experimental Composite Resins, IADR Progr & Abst57:No. 206, 1978.
12.
Prasad, S.V. : Wear of Particle-Reinforced Polymer Composites . Ph.D. Thesis, University of Sussex, Palmer, Brighton, U,K., 1977.
