Introduction: Researchers have been interested in the relationship between sella turcica bridging and various dental anomalies. This study investigates the association of sella turcica bridging and morphologic characteristics with the palatally impacted canine tooth.Materials and Methods:  Orthodontic records with high-quality lateral cephalometric and panoramic images were chosen. The study comprised 30 patients with palatally impacted canines (17 females and 13 males) and 30 controls with erupted canines (15 males and 15 females). The measurements were performed using the SCANORA 5.2.6 software. Further, the relevant data was collected and analyzed using SPSS software version 22. Descriptive statistical analysis was used to investigate data after their validation, with t-tests and chi-square tests to compare the two groups. The regression test was used to lessen the effects of confounding variables.Results: In the study group, 5 patients had type III sella turcica bridging, whereas 2 patients in the control group had type III sella turcica bridging. Results showed a statistically significant difference between the two groups (P-value=0.017). In the study group, the interclinoid distance and canine tooth angle were significantly lower than the control group (P-value=0.001, P-value=0.001). However, there were no significant differences in the depth and anterior-posterior diameter of sella turcica between the two groups (P-value=0.543, P-value=0.766). In terms of age (P-value = 0.400) and gender (P-value = 0.605), there was no significant difference between the two groups.Conclusions: The palatally canine impaction may be associated with the bridging of the sella turcica. Therefore, sella turcica bridging can be used as a diagnostic parameter for palatally canine impaction.

Objective: Management of patients with phenylketonuria mainly includes limiting the content of phenylalanine in the diet. Therefore, the purpose of this study was to investigate oral problems in children with phenylketonuria compared to the healthy population as a case–control study. Materials and Methods: The subjects of the case and control groups were selected according to the inclusion criteria. First, the oral cavity and tooth were examined by a specialist dentist to indicate the decayed, missing due to caries, and filled teeth index in both groups. To investigate the level of phenylalanine and evaluate other laboratory examinations, 2 mL of blood and saliva samples was taken from the subjects. Blood and saliva phenylalanine levels were measured by high-performance liquid chromatography. Phosphorus, calcium, and pH levels were investigated through calorimetric measurement. The data were analyzed using Statistical Package for Social Sciences software. Results: There was no significant difference between the case and control groups in terms of age and sex. The average level of calcium and phosphorus in the case group was higher than in the control group. Also, the average decayed, missing due to caries, and filled teeth index in the case group was not significantly different compared to the control group. None of the above-investigated indicators had a significant relationship with each other. On the other hand, it was found that there was a positive and significant relationship between phenylalanine in blood, saliva, and pH as well as between saliva phenylalanine with decayed, missing due to caries, and filled teeth. Conclusion: The results of this study indicate a significant effect of phenylketonuria disease on calcium, phosphorus, and oral pH levels in children.