Methods and apparatus are disclosed to provide a patient with a monolithic ceramic dental restoration in one office visit. In some embodiments, a dentist is provided with a kit containing one or more machinable blocks, a chair-side milling machine to convert a selected machinable block into a finished dental restoration, and optionally, a scanner. Machinable blocks may have a fully sintered zirconia material solid body and a sintered zirconia mandrel. A plurality of machinable blocks may be provided in multiple shape, size, or shade selections.