Table different study about mandibuer permolar

About different study morphology lower permolar in saudia and india and South africa

1. Salma alaqab Mandibular permolar

2. Study manlibuar permolar 1 India 2 South africa 3 Saudia

3. Comparative study about mandibuler first permolar 1

4. First permolar Saudia South Africa India First permolar In vivo – dental school In vivo – cone beam tomography Vitro – extracted teeth Type of study Saudia endodontic - -2017 journal Journal of oral -2022 science Dental journal -2015 Journal name – date 100 722 300 No. specimen 1 root = 80% 2 root= 18% 3 root= 2% 1 root =97.9% 2 root = 1.8% No. root type I= 69% Type V= 16% Type III= 8% Type IV= 4% Type I =49.5% Type V = 27.2% Type IV = 14.3% typeI = 84% Type II = 10.3 % Type of canal 1 apical foramen = 73% 2 foramen= 19% 3 foramen = 2% One foramen =78.9% Central = 17.3% Lateral = 82.7% No. apical foramen 6% 21% Present od delta 38% Position – cervical = 4.7% Middle =16.5% Apical =78.7% Accessory canal 2017 Saudi Endodontic Journal | Published by Wolters Kluwer ‑  Medknow J-STAGE Advance Publication: September 12, 2022 DJAS 3(III), 140-147, 2015 reference

5. Mandibular second premolar saudia South africa Indaia Second premolar Invivo – cone beam computer tomography In vivo - Invitro – extracted teeth Type of study The open dentistry journal -2021 SADJ April 2020, Journal of research in dentistry -2015 Journal – date 776 4019 100 No. specimen 1 root = 99.5% 2 root =0.5% 99.6% one root= No. root Type I =69.5% Type v= 22.2% Type III = 6.3% Type VII = 0.3 % Type I =84.4% Type V= 2.4% * Type III= 6.2% Type I = 89% Type V= 7% Type of canal One apical = 91.8% More than = 8.2% No. apical foramen 8.2% Present = 15% Absent = 85% Present of delta Present = 6% Absent = 94% Coronal = 2% Middle = 3% Apical =7% Accessory canal Open dentistry journal .com The SADJ is licensed under Creative Commons Licence CC-BY-NC-4.0. JRD-Journal of Research in Dentistry, Tubarão , v. 3, n. 4, sep / oct. 2015 reference J-STAGE Advance Publication: September 12, 2022*

6. 2 Congenital missing of mandibular premolar

7. Lower second prmolar effected 38.22%

8. Thank you .