Prevalence of maxillary canine impaction in skeletal Class III malocclusions compared to Class I malocclusions

Abstract

Background: The aim of the present investigation was to evaluate if an orthodontic population of Class III malocclusion patients shows a different prevalence of maxillary canine impaction than Class I subjects. Material and Methods: Fifty-eight subjects were retrospectively selected and assigned to the Class I group (n= 32) or the Class III group (n= 26), depending on the ANB and WITS values. Lateral cephalograms were used to collect angular and linear measurements that described the skeletal and dental maxillary features of the subjects, while orthopantomography was used to assess the impaction or the correct eruption of the maxillary canines. An independent samples T-test or a Mann-Whitney U-test was used to compare the cephalometric values between the two groups, while a chi-squared test was used to evaluate the distribution of maxillary canine impaction between the two groups. Results: No statistically significant difference was found for the cephalometric variables, and the frequency of canine impaction showed no difference between the Class III and Class I subjects. Conclusions: Patients with skeletal Class III malocclusions did not show a different prevalence of canine impaction; therefore, such skeletal features cannot be used as a diagnostic aid for assessment of the risk of maxillary canine impaction.

The Efficacy of Lingual Laser Frenectomy in Pediatric OSAS: A Randomized Double-Blinded and Controlled Clinical Study

“…A functional limitation of the tongue might have a few consequences both in infants and in teenagers. Functional alterations lead to different swallowing and chewing patterns, causing an incorrect coordination of the muscles and an anterior position of the tongue with possible malocclusions [ 9 , 10 , 11 , 12 ]. Therefore, several professional pediatricians, oral surgeons, orthodontists and speech therapists can be required for the treatment of this condition, which has a prevalence rate of 4% to 10% among newborns with a male to female ratio of 2:1 [ 9 , 10 , 11 , 12 ]; ethnicity is not a risk factor [ 13 , 14 ].…”

Change in the inclination of the maxillary permanent canines during developmental age in patients of the orthodontic clinic

“…Spearman's R correlation for the variable SS-N-SM and the right mandible inclination angle was +0.132 at p = 0.017, and for the left mandible inclination angle, it was +0.104 at p = 0.047. On the other hand, the study by Gabriele Di Carlo et al showed no correlation between skeletal class III and the frequency of permanent canine stop in the maxilla (49).…”

“…Natomiast w badaniu Di Carlo i wsp. nie wykazano korelacji między III klasą szkieletową a frekwencją zatrzymania stałych kłów szczęki (49).…”

Effect of facemask protraction on the development of impacted maxillary canines: a retrospective study.

“…However, no clear correlation between a Class III skeletal pattern and the impaction of maxillary canines has been demonstrated. Di Carlo et al, 32 evaluated the prevalence of maxillary canine impaction in Class III patients compared to Class I subjects, and found no significant differences. Nevertheless, Basdra et al, 21 observed the displacement of maxillary canines in 9% of skeletal Class III patients.…”