Strong Dental Inlays Restorate for tooth small damage ISO9001/2000
Sometimes, a tooth is planned to be restored with an intracoronal
restoration, but the decay or fracture is so extensive that a
direct restoration, such as amalgam or composite, would compromise
the structural integrity of the restored tooth or provide
substandard opposition to occlusal (i.e., biting) forces. In such
situations, an indirect gold or porcelain inlay restoration may be
Comparison of Inlays and direct fillings
When an inlay is used, the tooth-to-restoration margin may be
finished and polished to a very fine line of contact to minimize
recurrent decay. Opposed to this, direct composite filling pastes
shrink a few percent in volume during hardening. This can lead to
shrinkage stress and rarely to marginal gaps and failure. Although
improvements of the composite resins could be achieved in the last
years, solid inlays do exclude this problem.
Another advantage of inlays over direct fillings is that there is
almost no limitations in the choice of material. While inlays might
be ten times the price of direct restorations, it is often expected
that inlays are superior in terms of resistance to occlusal forces,
protection against recurrent decay, precision of fabrication,
marginal integrity, proper contouring for gingival (tissue) health,
and ease of cleansing offers.
However, this might be only the case for gold. While short term
studies come to inconsistent conclusions, a respectable number of
long-term studies detect no significantly lower failure rates of
ceramic or composite inlays compared to composite direct fillings.
Another study detected an increased survival time of composite
resin inlays but it was rated to not necessarily justify their
bigger effort and price.