## 3 Results  
Overall, 94 patients attending the prosthodontic department, College of Dentistry, Majmaah University, Saudi Arabia, meet the study inclusion criteria. The study used ninety-four pairs of dental casts for fixed prosthesis, with 42% of these pairs belonging to females (N = 40) and 58% to males (N = 54). The patients' ages ranged from 18 to 37 years, with a mean age of 24.6 to 4.06 years. The age for males ranges from 19 years to 37 years, with a mean of 23.74 \(\pm\) 3.73 years, while for females, the age range was from 18 years to 35 years, with a mean age of 24.57 \(\pm\) 2.83 years. Kappa statistics showed the inter-examiner reliability was good, with a K value of 0.8 for mesiodistal widths and excellent cervicoincisal widths, with a K value of 0.89. The mean, standard deviation, and median scores for mesiodistal width and cervicoincisal width of all permanent canines have been summarized in Table 1. The mesiodistal widths for teeth 13, 23, 33, and 43 were 8.12 \(\pm\) 0.58 mm, 8 \(\pm\) 0.81 mm, 7.47 \(\pm\) 0.59 mm, and 7.51 \(\pm\) 0.57 mm, respectively. Tooth 13 showed a higher mesiodistal width (8.12 \(\pm\) 0.58 mm), while tooth 33 showed a lower mesiodistal width among the four canines in the study population. The cervico incisal widths for teeth 13, 23, 33, and 43 were 8.92 \(\pm\) 1.29 mm, 9.1 \(\pm\) 1.27 mm, 9.11 \(\pm\) 1.05 mm, and 9.30 \(\pm\) 0.99 mm, respectively. Tooth 13 showed higher mesiodistal width, while tooth 13 showed lower cervicoincisal width among the four canines in the study population. The median score of mesiodistal widths for teeth 13 and 23 was found to be the same (8 mm), while for teeth 33 and 43, it was the same (7.5 mm). The median scores of cervicoincisal widths for teeth 13, 23, and 33 were found to be the same at 9 mm, while for tooth 43, it was 9.5 mm. \(<\) 0.05). Females were observed with more cervicoincial width compared to males in the study population. In comparison, cervicoincisal width was significantly higher for teeth 13, 23, and 43 (\(p\) \(<\) 0.05). The cervicoincisal width for tooth 33 is higher without a statistically significant difference (\(p\) \(<\) 0.05). The comparison of mesiodistal width and cericoincisal width among the males and females is summarized in Table 2. In males, tooth 13 has been observed with more mesiodistal width (8.21 \(\pm\) 0.64 mm) compared to its antimere tooth 23 (8.07 \(\pm\) 1.01 mm). However, tooth 43 was observed with more mesiodistal width (7.65 \(\pm\) 0.61 mm) compared to its antimere tooth 33 (7.62 \(\pm\) 0.64 mm). Tooth 13 has been observed with less cervicoincisal width (8.78 \(\pm\) 1.16 mm) compared to its antimere tooth 23 (8.87 \(\pm\) 1.33 mm). In comparison, tooth 43 (9.15 \(\pm\) 1 mm) has been observed with more cervicoincisal width than compared to its antimere tooth 33 (8.95 \(\pm\) 1.0 mm). In females, tooth 13 has been observed with less cervicoincisal width (9.11 \(\pm\) 1.43 mm) compared to its antimere tooth 23 (9.40 \(\pm\) 1.15 mm). However, tooth 43 was observed with more cervicoincisal width (9.5 \(\pm\) 0.96 mm) compared to its antimere tooth 33 (9.32 \(\pm\) 1.09 mm). Tooth 13 has been observed with more mesiodistal width (7.99 \(\pm\) 0.466 mm) compared to its antimere tooth 23 (7.9 \(\pm\) 0.41 mm). In comparison, tooth 43 has been observed with more mesiodistal width 13 (7.33 \(\pm\) 0.46 mm) than its antimere tooth 33 (7.28 \(\pm\) 0.46 mm). The descriptive charts for mesiodistal width for all permanent canines (teeth 13, 23, 33, and 43) have been illustrated in Figure 2, whereas cervicoincincisal (teeth 13, 23, 33, and 43) width descriptive charts were illustrated in Figure 3.  
The [PERSON]'s correlation matrix for mesiodistal width is shown in Figure 4. The mesiodistal width of tooth 13 strongly correlated with the MD width of teeth 23 (0.547), 33 (0.732), and 43 (0.709) with statistical significance (\(p\) \(<\) 0.01). Tooth 23's mesiodistal width strongly correlated with the mesiodistal width of teeth 33 (0.569) and 43 (0.542) with statistical significance (\(p\) \(<\) 0.01).