|
Sign In to gain access to subscriptions and/or personal tools.
|
Clinical ScienceA New Method for Sealing Composite Resin Contraction Gaps in Lined Cavities
B. Torstenson
Department of Oral Pathology, School of Dentistry, Karolinska Institute, Box 4064, 141 04 Huddinge, Sweden
M. Brannstrom
Department of Oral Pathology, School of Dentistry, Karolinska Institute, Box 4064, 141 04 Huddinge, Sweden
B. Mattsson
Department of Oral Pathology, School of Dentistry, Karolinska Institute, Box 4064, 141 04 Huddinge, Sweden
Composite resin restorations are often applied in cavities where cervical margins are left unetched, resulting in poorer adaptation in this area. Recent experiments have indicated the possibility of impregnating with resin the gap caused by polymerization contraction.
Cavities were prepared in vitro and in vivo. A thin liner was applied inside and outside the cavity. Except for the cervical wall, enamel margins were bevelled and acid-etched, and the cavities restored with Concise Enamel Bond and Composite.
In another series, cavities with unetched enamel were restored-Since the liner was placed outside the cavity margins, excess material could be removed without blockage of the air-filled gap.
Enamel Bond with a fluorescent additive was applied to various margins. Ground sections were prepared, and the penetration of this resin into the gap was examined with a microscope.
In most teeth, the resin penetrated from 0.5 to 2 mm from the cervical margins. Similar penetration was seen from unetched margins, except for the occlusal one. No penetration was seen at acid-etched margins. By impregnating gaps with low-viscous resin after the filling has cured, one can obtain an improved seal at unetched margins.
REFERENCES
- Brännström, M. and Nordenvall, K.-J. (1977): The Effect of Acid Etching on Enamel, Dentin and the Inner Surface of the Resin Restoration: A Scanning Electron Microscope Investigation, J Dent Res 56:917-923.[Abstract/Free Full Text]
- Brännström, M. and Nordenvall, K.-J. (1978): Bacterial Penetration, Pulpal Reaction and the Inner Surface of Concise Enamel Bond Composite Fillings in Etched and Unetched Cavities, J Dent Res 57:3-10.[Abstract/Free Full Text]
- Brännström, M.; Nordenvall, K.-J.; Torstenson, B.; Hedstrom, K.G.; and Wåhlstam, H. (1983): Protective Effect of Polystyrene Liners for Composite Resin Restorations, J Prosthet Derat 49:331-336.[CrossRef]
- Brannstrom, M.; Torstenson, B.; and Nordenvall, K.-J. (1984): The Initial Gap Around Large Composite Restorations in vitro: The Effect of Etching Enamel Walls, J Dent Res 63:681-684.[Abstract/Free Full Text]
- Dogon, I.L. (1975): Studies Demonstrating the Need for an Intermediary Resin of Low Viscosity for the Acid Etch Technique. In: Proceedings of an International Symposium on the Acid Etch Technique, Silverstone, L.M., and Dogon, I.L., Eds., St. Paul, MN: North Central Pub., pp. 100-118.
- Eriksen, H.M. and Buonocore, M.G. (1976): Marginal Leakage with Different Composite Restorative Materials in vitro. Effect of Cavity Design, J Oral Rehabil 3:315-322.[CrossRef][Medline]
[Order article via Infotrieve]
- Hegdahl, T. and Gjerdet, N.R. (1977): Contraction Stresses of Composite Resin Filling Materials, Acta Odontol Scand 35: 191-195.[CrossRef][Medline]
[Order article via Infotrieve]
- Hirasawa, T.; Hirano, S.; Hirabayashi, S.; Harashima, I.; and Aizawa, M. (1983): Initial Dimensional Change of Composite in Dry and Wet Conditions, J Dent Res 62:28-31.[Abstract/Free Full Text]
- Johnson, G.; Olgart, L.; and Brännström, M. (1973): Outward Fluid Flow in Dentin under a Physiologic Pressure Gradient: Experiment in vitro, Oral Surg 238-248.
- Nordenvall, K.-J. (1978): Enamel Bond Composite Fillings in Etched Cavities. The Appearance of Resin Surfaces Facing Enamel and Dentine, Swed Dent J 2:141-150.[Medline]
[Order article via Infotrieve]
- Pashley, D.H.; O'Meara, J.A.; Williams, E.C.; and Kepler, E.E. (1985): Dentin Permeability: Effects of Cavity Varnishes and Bases, J Prosthet Dent, In press.
Journal of Dental Research, Vol. 64, No. 3,
450-453 (1985)
DOI: 10.1177/00220345850640031201
 CiteULike  Complore  Connotea  Del.icio.us  Digg  Reddit  Technorati  Twitter What's this?
This article has been cited by other articles:
|
|
|
|
 
C.M. Kemp-Scholte and C.L. Davidson
Marginal Sealing of Curing Contraction Gaps in Class V Composite Resin Restorations
Journal of Dental Research,
May 1, 1988;
67(5):
841 - 845.
[Abstract]
[PDF]
|
|
|
|
|
|
|
R. L. Erickson
Dentin Bonding Agents A Perspective on Research and Clinical Use
J Biomater Appl,
January 1, 1986;
1(4):
336 - 372.
[Abstract]
[PDF]
|
|
|
|
|
