What does the Gustafson method assess?

The Gustafson method is utilized primarily in forensic odontology to assess tooth age based on various morphological features of teeth, particularly focusing on the changes in the root structure. This method emphasizes the evaluation of root transparency, which is indicative of physiological changes occurring in the teeth as a person ages.

In this context, root transparency is examined through various parameters such as the degree of wear, changes in the root outline, and the appearance of secondary dentin. These characteristics can provide valuable information regarding the age of an individual, making this method significant in forensic investigations. By analyzing the transparency of the roots, forensic specialists can gain insights into the age estimation process, aiding in the identification of unknown individuals.

The other options do not align with the primary focus of the Gustafson method. The height of the humerus, enamel structure, and muscle stiffness are not the parameters that this particular forensic technique evaluates. Thus, the most relevant aspect that the Gustafson method assesses is root transparency.