Date on Master's Thesis/Doctoral Dissertation

5-2019

Document Type

Master's Thesis

Degree Name

M.S.

Department

Oral Biology

Degree Program

Oral Biology, MS

Committee Chair

Metz, Michael

Committee Member

Durski, Marcelo

Committee Member

Crim, Gary

Committee Member

Metz, Cynthia

Author's Keywords

resin composite; bulk-fill; flowable; bond strength; microleakage

Abstract

When treating patients with existing restorations in which indirect restoration placement is indicated and crown lengthening surgery is contraindicated, dentists may choose to finish the crown margin on an existing restoration. The interface between the two dental restorations (resin composite and ceramic crown) may be more susceptible to microleakage and fluid staining, reducing restoration longevity. In this study, 80 extracted molars received indirect restoration margins finished on different direct restorative materials (resin-modified glass ionomer and conventional, flowable, and bulk fill nano-hybrid resin composite) and subjected to common staining fluids of coffee, tea, red wine, or Coca-Cola. If the clinician must finish lithium disilicate all-ceramic crowns on a direct restorative material, conventional or bulk fill nano-hybrid resin composite or resin-modified glass ionomer materials are better choices than a flowable nano-hybrid resin composite, regardless of common fluids consumed by the patient.

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