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Root surface temperatures produced during post space preparation

R N Weller1, W F Kimbrough, R W Anderson

  • 1Department of Endodontics, Medical College of Georgia, Augusta 30912-1244, USA.

Journal of Endodontics
|June 1, 1996
PubMed
Summary
This summary is machine-generated.

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The study measured root surface temperatures during post space preparation using a GPX bur at various speeds. Temperatures increased with rotational speed, peaking at 8,000 rpm, but remained below damaging levels for supporting tooth structures.

Area of Science:

  • Endodontics
  • Dental Materials Science

Background:

  • Post space preparation is crucial for restoring endodontically treated teeth.
  • Excessive heat generation during preparation can potentially harm periodontal tissues.

Purpose of the Study:

  • To evaluate the in vitro root surface temperatures generated by a GPX bur during post space preparation.
  • To determine the effect of different rotational speeds on heat production.

Main Methods:

  • Root surface temperatures were measured in vitro.
  • Post spaces were prepared using a GPX bur at rotational speeds of 6,500, 8,000, 9,500, 11,000, and 15,000 rpm.

Main Results:

  • The overall mean temperature increase ranged from 0.66°C to 4.81°C.

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  • The greatest temperature increase was observed at 8,000 rpm.
  • Temperatures at speeds greater than 8,000 rpm were significantly lower than at 8,000 rpm.

    • Conclusions:

    • The GPX bur, within the tested speed range, is unlikely to cause damage to the supporting structures of teeth during post space preparation.
    • Careful selection of rotational speed may help minimize heat generation.