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Journal of Prosthetic Dentistry

The magic slate as recording medium for Gothic arch tracing

      Gothic arch tracing has been acknowledged as one of the most reliable means of recording centric relation.
      • Keshvad A
      • Winstanley RB
      An appraisal of the literature on centric relation. Part III.
      The procedure can be used as a standard protocol for determination of centric relation or for purposes of education and research. Extraoral gothic arch tracing has been recommended over intraoral gothic arch tracing.
      • Rahn AO
      • Heartwell Jr, CM
      The recordings are generally made using materials such as precipitated chalk in denatured alcohol,
      • Rahn AO
      • Heartwell Jr, CM
      aerosol marking sprays
      • Wilson PHR
      • Banerjee A
      Recording the retruded contact position: a review of clinical techniques.
      (Occlude; Pascal Intl, Bellevue, Wash), thin wax films,
      • Keshvad A
      • Winstanley RB
      An appraisal of the literature on centric relation. Part I.
      or crayons.
      • Keshvad A
      • Winstanley RB
      Comparison of the replicability of routinely used centric relation registration techniques.
      These materials require removal and reapplication with every erroneous recording. Some are also prone to being smudged or rubbed off due to contact with saliva or the operator's fingers. To overcome these problems, this article describes the use of a magic slate, a device designed to be temporarily scribed.
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      References

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        • Winstanley RB
        An appraisal of the literature on centric relation. Part III.
        J Oral Rehabil. 2001; 28: 55-63
        • Rahn AO
        • Heartwell Jr, CM
        Textbook of complete dentures. 5th ed. B.C. Decker-Harcourt, New Delhi2002: 290-293
        • Wilson PHR
        • Banerjee A
        Recording the retruded contact position: a review of clinical techniques.
        Br Dent J. 2004; 196: 395-402
        • Keshvad A
        • Winstanley RB
        An appraisal of the literature on centric relation. Part I.
        J Oral Rehabil. 2000; 27: 823-833
        • Keshvad A
        • Winstanley RB
        Comparison of the replicability of routinely used centric relation registration techniques.
        J Prosthodont. 2003; 12: 90-101