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Root canal morphology of the maxillary first premolar
Journal of the American Dental Association (1939)
|August 1, 1979
Summary
Most maxillary first premolars have two root canals, with many featuring lateral canals. Understanding root canal anatomy is crucial for successful endodontic treatment and diagnosis.
Area of Science:
- Endodontics
- Dental Anatomy
Background:
- Accurate knowledge of pulp cavity morphology is essential for endodontic procedures.
- Understanding root canal anatomy variations aids in diagnosis and treatment planning.
Purpose of the Study:
- To investigate the canal configurations and presence of lateral canals in maxillary first premolars.
- To correlate canal morphology with root number.
Main Methods:
- Four hundred maxillary first premolars were decalcified, injected with dye, and cleared for study.
- Canal configurations and lateral canals were categorized and analyzed.
Main Results:
- 26% of teeth had one canal, 69% had two, and 5% had three at the apex.
- 49.5% of canals had lateral canals, predominantly in the apical region and exiting palatally.
- 11% of canals extended from the pulp chamber floor to the furcation area.
Conclusions:
- Maxillary first premolars exhibit significant root canal morphological variations.
- Awareness of these variations, including bifurcated canals and lateral canals, is vital for effective endodontic therapy and diagnosing treatment failures.