What the study found
The study found that maxillary premolars in a Jordanian subpopulation showed varied root and canal anatomy. The authors report that Ahmed's classification, a system for describing root canal patterns, gave more detailed descriptions than Vertucci's classification.
Why the authors say this matters
The authors conclude that CBCT, or cone-beam computed tomography, can reveal anatomical variations in maxillary premolars, and that Ahmed's classification may uncover canal details that were overlooked by Vertucci's system. They present this as relevant for describing premolar anatomy more fully.
What the researchers tested
The researchers retrospectively assessed 200 CBCT scans covering 800 maxillary premolars from a Jordanian subpopulation. They analyzed root morphology, canal configurations, and root canal divergence and merging, then classified the teeth using Vertucci's and Ahmed's systems and performed statistical analysis.
What worked and what didn't
Most first premolars had two roots, while most second premolars had a single root. Vertucci's type IV was most common in first premolars and type I in second premolars; Ahmed's classifications identified two separated roots and two separated canals in first premolars and one root and one canal in second premolars. Age had no impact, symmetry was seen between right and left sides, and three-rooted premolars were found in four cases.
What to keep in mind
The study was limited to a Jordanian subpopulation and to teeth visible on CBCT scans. The abstract does not describe additional limitations beyond this scope.
Key points
- 200 CBCT scans of 800 maxillary premolars were reviewed.
- Most first premolars had two roots; most second premolars had one root.
- Vertucci's type IV was most common in first premolars, and type I in second premolars.
- Ahmed's classification provided more detailed canal descriptions than Vertucci's.
- Age did not affect the patterns, and right-left symmetry was observed.
Disclosure
- Research title:
- Jordanian premolar canals showed varied configurations on CBCT
- Authors:
- Raidan Ba-Hattab, Muna Shaweesh, Nessrin A. Taha, Elham S. Abu Alhaija
- Institutions:
- Jordan University of Science and Technology, Primary Health Care, Qatar University, Qatar University
- Publication date:
- 2026-02-26
- OpenAlex record:
- View
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