Journal of Oral Rehabilitcttioti. 1992. Volume 19. pages 49-64

Thermo analytical characterization of visible light cure dental composites J. VAIDYANATHAN, T.K. V AID Y AN ATH AN , Y. WANG ««. 14. DSC exotherms of possible secondary cure. Note the exothcrm peak at 59-56°C.

Characterization of light cure dental composites

6t

93°C may Indicate either that the secondary cure is complete prior to this temperature or it may be the result of glass transition. The thermal expansion coefficient above 93°C is not however higher than that observed at temperatures before the shrinkage effects were observed (i.e. at (i;7/((/ of Oral Rehabilitation, 11, 11. MccAtJii, J.F. (1985) Cure performanee of light activated composites by ilifferential thettnal analysis (DTA), Dental Materials. I, 231. Mc:c:Aiiii, .I.F. & WILSON. H.J. (1980). The use of dilTetential seanning calorimetry for the evaluation of dental materials. Journal of Oral Rehabilitation. 7, lt)3. MotntMiiK, C T . & McNAtiiiiiioN, .I.K. (1973) Thetmal tieeomposition of transition metal complexes containing lieteiocyclic liquids. 1. I3cnzotltiozole eomplcxcs. Thermochimica Acta, 6, 269. RuYiiiti, I.E. (1985) Monomer systems and polymerization. In: Posterior Composite Resin Dental Restorative Materials, Vanherle G. and Smith D.C. (Eils.), pp. lt)9—35. Miitncsota Mining & Mfg. Co., St. Patil. RtJYTtit(, I.E. (1986) Reaetor response to paper on Composites by Leinfelder K.F., In: International State

of the Art

conference

on

Restorative

Denial

Materials,

p p . 411—133. P r o c e e d i n g of

the

conference held in Bethestla. M D , National Irrstittrte of Derttal R e s e a r c h , N I H . RrjYriiri, L E . & OYSArir), II. (1987) C o m p o s i t e s for use irr posterior t e e t h - c o m p o s i t i o n arul conversion. Journal

of Bioniedical

Materials

Research,

2 1 , 11.

64

./. Vaidyanathan et al.

iiit, I.E. & SJOVIK, 1..I. (1981) Composition of dental resin and composite materials. Acta Odontotogica Scandinavica, 39, 133. RUYTER, I.E. & SVI-NDSIIN, S.A. (1978) Remaining methacrylate groups in composite restorative materials. Acta Odontotogica Scandinavica, 36, 75. ScHWKNTKi'R, R.F. & Btii-K, L.A. (I960) The dilTerential thennal analysis of textile and other high polymeric materials. Textile Research Journal, 30, 624. VANKliKCKllOVl-N, H . , LAMtiRt-CllTS, P . , V A N Bi-YMiN, M . , DAVIDSON, C L . & V A N H I ' R L U , G . (1981)

Characlcrization of Composite Resins by NMR and TEM. Journal of Dental Research. 60, 1957. RuYitiR el ai 1987