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Dentin cavities, prepared in extracted human teeth, were treated with two different dentin-bonding agents and filled with a light-activated microfilled resin. The maximum width of the contraction gap (MG) and the extent of the gap (GP) were then measured, using a light microscope, approximately 0.1 mm below the original free surface of the filling. The contraction gap was measured 30 s, 10 min or 60 min, and remeasured 65 min, after stop of irradiation. A positive correlation was found between the two variables, MG and GP. The product of MG and GP was chosen as basis for the statistical analyses. This "marginal index" was significantly reduced when polishing of the marginal area was postponed for 10 min with one of the dentin-bonding agents and for 60 min with the other. Even though the improvement in marginal adaptation was statistically significant, this improvement was considered clinically irrelevant. It is concluded that polishing of the marginal area should not be done before the hygroscopic expansion of the resin restoration has closed the contraction gap.
E K Hansen, and
E Asmussen
January 2002,
The Journal of clinical pediatric dentistry,
E K Hansen, and
E Asmussen
April 2013,
Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.],
E K Hansen, and
E Asmussen
April 2013,
Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.],
E K Hansen, and
E Asmussen
October 1984,
Journal of dental research,
E K Hansen, and
E Asmussen
January 2003,
Operative dentistry,
E K Hansen, and
E Asmussen
April 1984,
ZWR,
E K Hansen, and
E Asmussen
November 1985,
The Journal of prosthetic dentistry,
E K Hansen, and
E Asmussen
August 2007,
The journal of adhesive dentistry,
E K Hansen, and
E Asmussen
May 2014,
The journal of contemporary dental practice,
E K Hansen, and
E Asmussen
January 2000,
Operative dentistry,
