Abstract
AimThe aim is to study the surface finish of ceramic restorations by glazing and polishing procedures and compare the surface morphology to determine the presence or absence of surface cracks on porcelain specimens observed under optical (light) microscope and a scanning electron microscope (SEM). Materials and methodsThirty six specimens of vita VMK 68 No. 559 incisal porcelain were prepared and divided into eight groups (n = 6) (Group I–Group VI) and then subjected to various polishing and glazing procedures. The specimens were then observed under optical (light) microscope and scanning electron microscope (SEM). ResultsGroups I, II, III, V, did not exhibit any surface cracks whereas Groups IV & VI which were ground, polished and then re-glazed exhibited micro cracks on the surface of the specimens. ConclusionDental porcelains which are extensively used in dentistry have been constantly evolving to maximize strength. Within the limitations of this study it was observed that the optical (light) microscope and SEM analysis correlate with each other. The specimen surfaces that were polished and then self-glazed exhibited formation of fine surface cracks.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call