200303PPA Deliperi.qxd

in 1989 significantly contributed to the growth of aesthetic dentistry. Tooth whitening is a painless procedure that does not require the administration of anesthesia, thus encouraging patients to seek additional aesthetic treatment. Moreover, the noticeable color change observed following whitening procedures may motivate patients to seek further aesthetic treatments (eg, porcelain or resin bonded composite [RBC] restorations). In particular, RBCs represent an ideal compromise of aesthetics, longevity, and reduced expenditure when compared to porcelain alternatives. The development of composite resins with improved physical, aesthetic, and handling properties, as well as the introduction of newergeneration adhesive systems, are primarily responsible for their increasing durability and reliability. 6 As a consequence, the clinical indications for RBCs have been expanded in the last decade. The increase in patient demand for conservative treatment options to preserve sound tooth structures can be satisfied using direct composite systems. The literature has further indicated that modern adhesive systems — in combination with RBCs — can also reinforce the remaining tooth structure. These findings have encouraged clinicians to restore nonvital teeth by using composite materials to replace only the missing tooth structure in a minimally invasive manner. The mechanism of dentin bonding to RECONSTRUCTION OF SEVERELY DAMAGED ENDODONTICALLY TREATED AND BLEACHED TEETH USING A MICROHYBRID COMPOSITE RESIN: TWO-YEAR CASE REPORT