Three-rooted premolar analyzed by high-resolution and cone beam CT

Area of Science:

• Endodontics
• Dental Imaging
• Anatomy

Background:

• Three-rooted maxillary premolars present unique anatomical challenges in endodontic diagnosis and treatment.
• Accurate assessment of root and canal morphology is crucial for successful endodontic outcomes.
• High-resolution computed tomography (μCT) and cone beam computed tomography (CBCT) are advanced imaging modalities used in dentistry.

Purpose of the Study:

• To compare the accuracy of μCT and CBCT in analyzing the cross-sectional area of canals and roots in three-rooted maxillary premolars.
• To evaluate image quality and detail differences between μCT and CBCT for these specific dental structures.

Main Methods:

• Sixteen extracted three-rooted maxillary premolars with fully formed apices were scanned using both μCT and CBCT.
• Root and canal cross-sectional areas were measured at defined points and intervals using specialized software.
• Statistical analysis, including the Student t test, was employed to compare measurements between the two imaging techniques.

Main Results:

• μCT produced significantly sharper images compared to CBCT.
• Statistically significant differences were found in the mean area measurements of roots and canals between μCT and CBCT (P < 0.05).
• Both techniques showed similar patterns of area variation from cervical to apical, with areas decreasing towards the cementodentinal junction and then increasing apically.

Conclusions:

• μCT provides superior image detail for evaluating root and canal morphology in three-rooted maxillary premolars compared to CBCT.
• While CBCT is a valuable diagnostic tool, its current limitations in image detail may affect accuracy in complex root canal systems.
• Further improvements in CBCT technology are needed to enhance its diagnostic capabilities for intricate anatomical variations.