Which of the following methods is used to assess age through dental analysis?

The Gustafson method is a well-established technique used in forensic odontology to estimate the age of an individual based on the analysis of dental features. This method primarily assesses aging changes in human teeth, including the wear and tear of dental surfaces, changes in the color and transparency of the enamel, dentin exposure, secondary and tertiary dentin formation, and the degree of root resorption or apical closure.

By evaluating these characteristics, the Gustafson method can provide an estimate of age with a reasonable degree of accuracy, making it a useful tool in forensic investigations and identification processes. This method is based on the understanding that dental development and wear are closely related to age, which is why it serves as a reliable indicator for determining the age of an individual.

The other options presented do not pertain to forensic dental analysis in the same manner as the Gustafson method. The Locard principle relates to the exchange of evidence at crime scenes, the Breslaw test involves forensic toxicology, and Ewing's postulates pertain to the cause of death in forensic medicine, so they do not directly involve dental age assessment.