Authors: Hayder Abdalla Hashim, Fatima AL-Suwaidi, Mohamed Hayder Hashim Mohamed, Dalia K. Taher, Najat AL Sayed.
Aims: The objectives of the present study were to establish Tweed facial triangle norms in Sudanese and to compare the result with Tweed norms and previous reported results in different racial groups.
Material and Method: The sample consisted of 103 lateral cephalometric radiographic radiographs with age range 18 to 25 years old.
Results: The result of the present study showed that the mean values of FMA 25.39o +/- 6.8o FMIA 59.89o +/- 9.08o angles and IMAP 94.71o +/- 9.67o. The result in Sudanese revealed significantly higher mean values compared to Tweed norms except for FMA angle. The comparison with other races shows statistically significant differences when compared to Sudanese result.
Conclusion: Tweed’s emphasis on the importance of cephalometric analysis highlights the need for precise measurement in orthodontic diagnosis and treatment planning. The study established mean values for Tweed's Facial Triangle for the Sudanese, which is valuable, as it addresses the variability in facial structure across different ethnic groups, which can lead to more accurate and effective orthodontic treatment outcomes.