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Cytotoxicity of a composite resin (Restodent), suggested for use as a retrograde endodontic filling material, was evaluated in… Expand Summary. The quality of the apical seal using the single cone gutta-percha obturation technique with four different dentinal… Expand Class V cavities and wedge-shaped cavities simulating erosions were prepared in thirty extracted, permanent human teeth. After… Expand The restoration o f fractured incisal edges is not an easy procedure. The practitioner has the choice o f several methods which… Expand