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Related Experiment Videos

Root trunk dimensions of 5 different tooth types.

D G Kerns1, H Greenwell, J W Wittwer

  • 1United States Army Dental Activity, Ft Hood, Texas, USA.

The International Journal of Periodontics & Restorative Dentistry
|June 24, 1999
PubMed
Summary

This study measured root trunk dimensions in multirooted teeth. Findings provide crucial data on cementoenamel junction to root groove and division distances for various molar and premolar types.

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Area of Science:

  • Dental Anatomy
  • Morphometrics
  • Endodontics

Background:

  • Understanding root trunk morphology is essential for endodontic procedures.
  • Multirooted teeth present complex anatomical variations impacting treatment outcomes.

Purpose of the Study:

  • To document mean, standard deviation, and range of root trunk dimensions.
  • To measure distances from the cementoenamel junction (CEJ) to root groove and root division.
  • To analyze these dimensions across different multirooted tooth types.

Main Methods:

  • Examination of 412 extracted teeth.
  • Classification of teeth into maxillary first molars, maxillary second molars, maxillary first premolars, mandibular first molars, and mandibular second molars.
  • Measurement of CEJ to root groove and CEJ to root division distances.

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Main Results:

  • Mean CEJ to root groove distances varied by tooth type, ranging from 1.16 mm (mandibular first molars) to 1.89 mm (maxillary second molars).
  • Specific ranges for each tooth type were documented, providing detailed morphometric data.
  • The study established normative data for root trunk dimensions.

Conclusions:

  • The documented root trunk dimensions offer valuable anatomical references.
  • This data can aid clinicians in performing more precise endodontic treatments.
  • Further research can explore the clinical implications of these specific root trunk measurements.