Vol. 10, Issue 3, Part F (2024)

Introduction: The quality of final prosthesis be subject to on accuracy of definitive impression. The most important factors in improving the prognosis of prosthodontic restoration are good marginal and internal fit, along with high mechanical strength, good adhesion to veneering material and luting cement. The conventional technique of impression has seen a long journey from impression plaster and waxes till current once like polyether. In dentistry CAD/CAM technology has been in use since 1980 CERCT was first CAD/CAM system used in dentistry.
Review: The purpose of this review was to compare marginal and internal fit of fixed restoration with digital technique to those fabricated using conventional impression technique to determine the effect of different restoration on accuracy fit.
Summary: The advantages of digital impression and scanning system are improving patient, acceptance, reducing the distortion of impression material 3D pre-visualization of tooth preparation and probable cost and time effectiveness, removal of laboratory production steps, that case misfit and reduced patient discomfort.
Conclusion: Based on this review digital impression appears to be superior in various aspect than conventional impression.