Anthropometric considerations between lower first molar, condyle ramus height and coronoid process

This study examines the relationships between the lower first molar, the condyle-ramus height, and the coronoid process of the mandible. It is based on the idea that craniofacial structures maintain consistent anatomical proportions, which could assist in orthodontic and prosthetic rehabilitation. The first molar is considered crucial to occlusion development, with its position possibly reflecting underlying skeletal patterns. Materials and Methods. A pilot clinical trial was carried out at the University of L’Aquila using CBCT scans from 27 adult patients. Measurements were taken at four points:-A: Top of the mandibular condyle-B: Mandibular angle-C: Buccal surface of the first lower molar-D: Coronoid process on the opposite side. Distances AB (condyle to angle), BC (angle to first molar), and CD (coronoid to molar) were calculated. Scans with asymmetries or artifacts were excluded to ensure consistency. Results. Patients were categorized by Angle’s classification:-**Class I (n=14)**: AB/BC average around 55.9 mm; CD approximately 84.7 mm-**Class II (n=7)**: AB/BC average about 55.2 mm; CD around 86.5 mm-**Class III (n=6)**: AB/BC average roughly 61.6 mm; CD approximately 90.6 mm In 85% of cases, point C (molar location) was found in the mesial half of the first molar. While AB and BC measurements correlated strongly (indicating a predictable molar location), no significant correlation was found between CD and the other distances. Discussion. The study confirms a consistent anthropometric relationship between the condyle, mandibular angle, and the lower first molar. This suggests that the position of the lower first molar is structurally determined and should guide orthodontic and prosthetic treatments. Therefore, clinicians should focus on maintaining or restoring this natural alignment in treatments, including implants or dentures. Conclusion. The position of the mandibular first molar demonstrates a consistent geometric relationship with skeletal landmarks. This anatomical constant should be utilized in clinical practice to improve long-term treatment outcomes in orthodontics and prosthodontics.