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Endodontic morphology. III. Canal preparation.

R W Hession

    Oral Surgery, Oral Medicine, and Oral Pathology
    |November 1, 1977
    PubMed
    Summary

    Accurate root canal preparation requires careful assessment of tooth length to control endodontic instruments. Variations in tooth length highlight the need for precise measurement during clinical practice.

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    Endodontic morphology. IV. A comparative study.

    Oral surgery, oral medicine, and oral pathology·1977

    Area of Science:

    • Dentistry
    • Endodontics
    • Dental Anatomy

    Background:

    • Root canal preparation is crucial for successful endodontic treatment.
    • Variations in tooth length can complicate instrumentation and obturation.
    • The lateral condensation technique is a common method for root canal filling.

    Purpose of the Study:

    • To evaluate root canal preparation using endodontic instruments in extracted human teeth.
    • To identify challenges related to tooth length variations during instrumentation.
    • To assess instrument performance and debris management in endodontic procedures.

    Main Methods:

    • Prepared 309 root canals in 164 extracted human teeth.
    • Utilized endodontic instruments for preparation prior to lateral condensation obturation.
    • Marked variations in tooth lengths and assessed canal preparation depth and coronal flaring.
    • Observed instrument failures and debris movement during instrumentation.

    Main Results:

    • Variations in tooth lengths were observed, emphasizing the need for precise measurement.
    • Most canals were prepared to the desired depth with coronal flaring.
    • Some endodontic instrument failures occurred during the preparation phase.
    • Files showed a tendency to push debris apically during instrumentation.

    Conclusions:

    • Careful assessment of tooth length is essential for adequate control of endodontic instruments.
    • Coronal flaring and achieving desired preparation depth were generally successful.
    • Instrument failures and apical debris extrusion are potential complications in root canal preparation.

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