[Occlusal reduction. A new approach using a particular rotary instrument]

In this paper the occlusal reduction for a single crown is studied. After a brief description of the classical techniques and usual instruments, an analysis of the different malocclusions demonstrates that the reduction has to be made in accordance with each individual case. Afterwards, the author presents a new diamond with an original profile which shows a concave working side limited by two spherical parts. With this profile an ideal prepared occlusal surface can be obtained with only one passage of the bur. The preparation of the occlusal surface with this instrument is then analysed step by step, showing how a real sculpture of this surface can be achieved rapidly and with ease. A clinical case demonstrates the results.