European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
June 2010
Electronic ISSN:
0965-7452
Vol:
18
Issue:
2

Marginal Behaviour of Self-etch Adhesive/composite and Combined Amalgam-composite Restorations

Abstract - The aim of this study was to compare the marginal and internal adaptation in self-etching adhesive (SEA) /composite restorations with combined amalgam-resin-based composite restorations in the proximal box with and without bonding agent beneath amalgam both before and after load-cycling. Class II restorations, were manufactured as following a) Bonding agent (Clearfil Liner Bond 2V, Kuraray) beneath amalgam (Tytin, SDS Kerr) and resinbased composite (Clearfil APX, Kuraray) with SEA, b) Amalgam without bonding agent and resin-based composite with SEA and c) Resin-based composite with SEA. Each group divided into two equal subgroups (n=8). Marginal and internal adaptation of first subgroup evaluated after 7-day water storage and of the second after load-cycling in chewing simulator for 1.2x106 cycles. Marginal and internal adaptation at cervical and amalgam-composite sites evaluated by videomicroscope and ranked as “excellent”/”non-excellent”. Slices of restorations examined under optical microscope to determine the quality of bonding layer. Defects in cervical adaptation observed in the three restorative techniques examined prior loading. Amalgam-composite combination in proximal surface provided comparable marginal and internal adaptation results at cervical wall, to self-etching-composite combination. Portion (25-37.5%) of amalgam-resin-based composite interfaces in proximal box presented no perfect sealing. The application of bonding agent beneath amalgam resulted in relatively inferior cervical adaptation. Loading resulted in fewer excellent restorations in all three restorative techniques but not in a statistically significant level.

KEYWORDS: bonded amalgam, resin-based composite, load-cycling, marginal adaptation, internal adaptation

Article Price
£15.00
Institution Article Price
£
Page Start
70
Page End
77
Authors
Nikos Kournetas, Afrodite Kakaboura, Dimitrios Giftopoulos, Magdad Chakmachi, Christos Rahiotis, J. Geis-Gerstorfer

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. Influence of Thermomechanical Fatigue Loading on the Fracture Resistance of All-ceramic Posterior Crowns
  2. 50
  3. 54

  1. Fabrication of a Fixed Provisional Implant Restoration A Report of Three Cases
  2. 55
  3. 59

  1. Tensile Strength of Laser Welded Cobalt-Chromium Alloy With and Without an Argon Atmosphere
  2. 60
  3. 65

  1. The Heat Emitted from Some Qth and Led Light Curing Units in Consecutive Activations A Laboratory Assessment
  2. 66
  3. 69

  1. Marginal Behaviour of Self-etch Adhesive/composite and Combined Amalgam-composite Restorations
  2. 70
  3. 77

  1. Three-Dimensional Positional Changes of Teeth Adjacent to Posterior Edentulous Spaces in Relation to Age at Time of Tooth Loss and Elapsed Time
  2. 78
  3. 83

  1. Temperature Rise During Intraoral Polymerization of Self-Cured Hard Denture Base Liners
  2. 84
  3. 88

  1. Colour Stability, Opacity and Cross-Link Density of Composites Submitted to Accelerated Artificial Aging
  2. 89
  3. 93

  1. Book Reviews
  2. 94
  3. 95