[Morphometric features of the condylar process of the mandible].

Abstract

Objective: The aim of the study is to determine the X-ray morphometric parameters of the neck of the mandible for the rational choice of fixing elements during osteosynthesis.

Material and methods: Based on 145 computed tomography scans of the mandible, the parameters of the upper and lower borders, the area and thickness of the neck of the mandible were studied. The anatomical boundaries of the neck were determined using the classification of A. Neff (2014). The parameters of the neck of the mandible were studied depending on the shape of the mandible ramus, gender, age and preservation of dentition.

Results: The sizes of morphometric parameters of the neck of the mandible prevail in men. Statistically significant differences were found between the sizes of the neck of the mandible in men and women in the width of the lower border, area, and thickness of bone tissue. It was revealed that there are statically significant differences between hypsiramimandibular, orthoramimandibular and platyramimandibular forms in the following parameters: the width of the lower and upper borders, the middle of the neck, the area of bone tissue. When comparing the morphometric parameters of the neck of the articular process, there were no statistically significant differences between the age groups (p>0.05), and no differences were found between the groups identified by the degree of preservation of the dentition (p>0.05).

Conclusion: Morphometric parameters of the neck of the mandible have individual variability, statically significant differences depending on the sex and shape of the mandibular ramus. The obtained results on the width, thickness, and area of the bone tissue of the neck of the mandible will help in clinical practice to rationally choose the length of screws; the size, number, and shape of titanium mini-plates to achieve the requirements of stable functional osteosynthesis.