###### Abstract
Despite being somewhat time-consuming, this method demonstrates promising outcomes for assessment of dental age when utilizing X-ray microfocus computed tomography. Thus, advancements in three-dimensional imaging opened up opportunities to incorporate volumetric measurements and provide a more comprehensive understanding of the ongoing process of tooth mineralization [20]. The introduction of cone beam computed tomography (CBCT), specifically designed for the maxillofacial region, has expanded the capabilities of three-dimensional imaging. This novel technique now enables the acquisition of volumetric data in vivo. These acquisitions present promising prospects for exploring and analyzing volumetric measurements of teeth. Subsequently, many researchers shifted the focus towards the use of cone beam computed tomography (CBCT) and found it to be ideal and accurate for the PTR measurement method [19; 20; 26]. For example, [PERSON] et al. [19] estimated the chronological age of Iranian individuals using CBCT based on [PERSON]'s method [17] to analyze the correlation between age and morphological variables of the maxillary canine teeth. The morphological variables were measured in different planes. Significant negative correlations were observed between age and all the measured variables. There were no notable differences in the mean variables between males and females. The regression model exhibited a correlation of 0.88 between the estimated age and the actual age. Based on the findings, the developed equation provides a reasonably accurate estimation of individuals' age, with an allowable error of less than five years. In a Belgian population, [23], [PERSON] et al. assessed a method for estimating human dental age by examining the ratio between the pulp volume and the corresponding tooth volume, using CBCT images of anterior teeth. A total of 111 CBCT images obtained from clinical scans (Scanora(r) 3D dental cone beam unit) were utilized in this study. Using Simplant(r) Pro software, the pulp-tooth volume ratio was calculated for 64 incisors, 32 canines, and 15 premolars based on the three-dimensional images. A linear regression model was applied here and among the teeth examined, the incisors displayed the best correlation between the pulp-tooth volume ratio and age. Age determination is a key factor in solving crimes, identification of dead bodies, issues related to physical assault, illegal immigration, etc., in every country. However, there are no available studies in the Saudi Arabian population using the above-mentioned advantages of CBCT to correlate the PTR of the anterior teeth (central incisor and canine) with the chronological age. This is the reason why we chose to conduct this research. Among various teeth in the dental arch, maxillary incisors and canine teeth have a more prominent volume of pulp, less wear from the diet, high survival rates, and ease of performing radiographic measurements, and the reliability of these teeth are reported in previous studies [3; 8; 27; 28; 29; 30; 31]. Therefore, this study aimed to assess the relationship between the pulp-tooth area ratio of the maxillary canines and central incisors and chronological age among Saudi Arabian adults using CBCT.