Efficient instruments for cavity, crown preparation introduced

    March 29, 2007
    S-Diamond design, with staggered plane surfaces and multiple edge structures, reduces time involved in primary preparation of crown cores as compared to conventional diamond instruments.

    ROCK HILL, South Carolina--KOMET USA, a leader in the production of precision rotary instruments for the dental industry, has introduced its S-Diamond rotary instrument portfolio for efficient cavity and crown preparation.

    The special patented design of the S-Diamond instrument, with staggered plane surfaces and multiple edge structures, significantly reduces the time involved in the primary preparation of crown cores, as compared to conventional diamond instruments.

    The S-Diamond instruments have proven to remove considerably more tooth substance than conventional diamond instruments, saving time for users and patients. Its combination of a structured blank and coarse grit enables effective substance removal and improved cooling.

    The faceted structure of the blank reduces clogging and heat generation. The time savings, quicker reduction, gentle treatment and better cooling delivered by the S-Diamond instruments all translate into improved patient comfort.

    In a recent study published in the March 2007 issue of the Journal of Applied Research, renowned Professor Dr. Ing. Isabella-Maria Zylla, professor at the UAS Osnabruck, Germany and Director of the Competence Center for Metallography and Material Analysis, assessed the abrasive performance and service life of galvanically diamond coated grinding tools made by Brasseler USA, Axis Dental Corporation, and KOMET USA.

    Brand new identical instruments from each manufacturer were tested for their abrasive performance, their service life and their physical appearance in new and used condition.

    The material used for testing was Macor ceramic, a homogeneous material resembling simulating enamel. During the study, the diamond instruments covered a defined distance of 26 mm. The tip of each instrument protruded under the block and ran idle without grinding (1.5 mm).

    After each cycle, the cutting depth was increased by another 0.5 mm. Each grinding cycle was timed by means of an electronic stop watch and documented accordingly. This procedure was repeated 10 times with each instrument. Prior to the abrasion tests, SEM photographs were taken of selected diamond instruments to assess the diamond coating.

    This was repeated after conclusion of the grinding process. To allow an objective assessment of the diamond grit coating, the number of grains on an area of 1 mm was ascertained before and after the grinding process, and then statistically evaluated.

    The abrasive performance of all three manufacturers' instruments was recorded after the first cycle and again after the 10th cycle.

    The study shows that after multiple grinding cycles, the abrasive performance and speed of KOMET USA's S-Diamonds remained superior to other competitors in her study.

    As Dr. Zylla states in her study, "the S-Diamond instruments from KOMET USA retain their superior power over time due, in part, to their structured blank."

    For more information about KOMET USA and S-Diamond rotary instruments, contact the company at (800) 208-1630 or via the Internet at KOMET USA.