Dental Restoration Failure of Marginal Integrity Clinical Trial
Official title:
Clinical Performance of Short Fiber Reinforced Resin Composite Restorations Versus Indirect Nanohybrid Resin Composite Onlay Restorations in Complex Proximal Cavities of Molars
clinical performance of short fiber reinforced resin composite versus indirect nanohybrid resin composite onlay restorations in complex proximal cavities of molar teeth will be evaluated over one year.
Resin composite materials have been rapidly developed in the latest few years. Direct resin
composite restorations become the golden standard for restoring intracoronal cavities. While
for the extracoronal cavities, the indirect resin composite onlays tend to replace metallic
restorations in most situations being more esthetic and conservative with lower cost (Rocca &
Krejci, 2007).
Indirect resin composite onlays usually are lab processed in two appointments but it can be
made in one appointment through CAD/CAM technology or by flexible model technique (semidirect
technique).
These restorations offer more control on the proximal contacts and the anatomic form over the
direct approach. Polymerization shrinkage occurs outside the patient mouth so the stresses
are decreased and become limited to the width of the luting space. Annual failure rate (AFR)
of indirect posterior resin composite restorations is up to 10% (Manhart et al, 2004).
One of the advancement in resin composite technology is the evolution of short fiber
reinforced resin composite (SFRC) material that allows making a direct onlay restoration
possible thus offers less procedural steps and saves more time (Garoushi et al, 2013).
This material is made to be used as a dentine substitute in the high stress-bearing areas. It
is covered by a conventional resin composite filling to act as the enamel replacement this
combination gives us a kind of biomimetic restoration.
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