The effect of premolar extractions on the change of angulation and eruption space of the mandibular third molars after orthodontic treatment

Authors

Asmae BENKADDOUR, Department of Dento-facial Orthopedics, Faculty of Dentistry, Mohamed V University, Rabat.Follow
Khaoula M'RABT, Department of dento facial orthopedics, Faculty of Dentistry, University Mohamed V, Rabat, MORROCO.Follow
Loubna BAHIJE, Department of Dento-facial Orthopedics, Faculty of Dentistry, Mohamed V University, Rabat.Follow
Fatima ZAOUI, Department of Dento-facial Orthopedics, Faculty of Dentistry, Mohamed V University, Rabat.Follow
Asmae BAHOUM, Department of Dento-facial Orthopedics, Faculty of Dentistry, Mohamed V University, Rabat.Follow

DOI

https://doi.org/10.70174/iajd.v16i1.1394

Abstract

Introduction:

Our study was designed to analyze the effect of lower premolar extraction on the evolution space of the lower third molars, as well as their position and angulation during orthodontic treatment.

Equipment and method:

This is a cross-sectional, retrospective, descriptive and analytical study comparing two groups of patients: the first group includes 20 patients treated without premolar extraction, and the second group, 27 patients treated with premolar extraction.

Linear and angular measurements were performed on panoramic radiographs and lateral cephalograms of orthodontic pre- and post-treatment.

Results and discussion:

The eruption space and the horizontal position of the lower third molars, showed a favourable and statistically significant evolution between the two patient groups. Angulation changes did not show a significant difference.

Conclusion:

Premolar extractions have a positive and significant influence on the eruption space and the horizontal position of the mandibular third molars. Angulation changes showed a favourable, but not significant development in the group treated with premolar extraction.

Recommended Citation

BENKADDOUR, Asmae; M'RABT, Khaoula; BAHIJE, Loubna; ZAOUI, Fatima; and BAHOUM, Asmae (2025) "The effect of premolar extractions on the change of angulation and eruption space of the mandibular third molars after orthodontic treatment," International Arab Journal of Dentistry: Vol. 16: Iss. 1, Article 9.
DOI: https://doi.org/10.70174/iajd.v16i1.1394
Available at: https://e-journals.usj.edu.lb/iajd/vol16/iss1/9