EVALUATION OF ROOT AND CANAL MORPHOLOGY OF MAXILLARY FIRST MOLAR AMONGST UPPER EGYPT SUBPOPULATION USING A NEW SYSTEM OF CLASSIFICATION A CBCT RETROSPECTIVE STUDY

Aim of the study: To evaluation of root and root canal morphology in permanent maxillary first molar in the Upper Egypt subpopulation with a new classification system via CBCT. Material and methods: The present study includes 1500 maxillary first molars CBCT images, were examined and classified according to Ahmed et al classification. Results: a total of 1,500 CBCT scans with an age range spanning from 14 to 72 years. The mean age of participants was 36.8 years and the sample comprised 631 males (42.1%) and 869 females (57.9%), showing a slight predominance of female participants. For the coding classifications, the most prevalent code was "³M MB¹⁻¹⁻¹ P¹ DB¹" with 446 participants (29.7%), followed by "³M MB2-2-2 P¹ DB¹" with 418 participants (27.9%) .Among males (n=631), the most common code was "³M MB¹⁻¹⁻¹ P¹ DB¹" in 164 participants (26%) among females (n=869), the code "³M MB2-2-2 P¹ DB¹" was more prevalent (295, or 33.9%). Regarding calcified roots, the majority of participants (861, 57.4%) had no calcified roots (0), while 550 participants (36.7%) had one calcified root, and only 89 participants (5.9%) had two calcified roots Conclusion: Combining CBCT imaging with this new classification allows for more detailed description and precise information about root canal configuration which enhances pre-evaluation of the root canal morphology and will have positive impact on the outcome of endodontic therapy