Aim To evaluate the association between the mesially displaced maxillary first premolar (MDP) and the early displacement of the adjacent permanent canine (EDC) before their eruption. Materials and methods A sample of 1247 subjects in the intermediate mixed dentition stage was assessed for the presence of MDP and EDC. All subjects were divided into two groups: MDP group and noMDP group. For each subject two angular measurements (premolar-occlusal plane η and Л premolar-midline angles) were analysed on panoramic radiographs. The chi-square test with Yates correction was performed to compare the prevalence rate of EDC in MDP (MDP-EDC) and noMDP groups. The statistical comparisons for the values of η and Л angles between MDP vs noMDP, MDP vs MDP-EDC, and noMDP vs MDP-EDC groups were performed by means of ANOVA with Bonferroni correction. Results The prevalence rate of EDC in the MDP group was significantly greater than in the noMDP group (66% vs. 12.1%). MDP-EDC group showed a significantly larger Л angle than in the MDP group resulting in an increased mesial inclination of displaced premolars. Conclusion MDP can be considered a dental anomaly associated to maxillary canine displacement.

Association between mesially displaced maxillary first premolars and early displaced maxillary canines / Mucedero, M; Franchi, L; Ricchiuti, M R; Cozza, P. - In: EUROPEAN JOURNAL OF PAEDIATRIC DENTISTRY. - ISSN 1591-996X. - STAMPA. - 16:(2015), pp. 45-50.

Association between mesially displaced maxillary first premolars and early displaced maxillary canines

FRANCHI, LORENZO
;
2015

Abstract

Aim To evaluate the association between the mesially displaced maxillary first premolar (MDP) and the early displacement of the adjacent permanent canine (EDC) before their eruption. Materials and methods A sample of 1247 subjects in the intermediate mixed dentition stage was assessed for the presence of MDP and EDC. All subjects were divided into two groups: MDP group and noMDP group. For each subject two angular measurements (premolar-occlusal plane η and Л premolar-midline angles) were analysed on panoramic radiographs. The chi-square test with Yates correction was performed to compare the prevalence rate of EDC in MDP (MDP-EDC) and noMDP groups. The statistical comparisons for the values of η and Л angles between MDP vs noMDP, MDP vs MDP-EDC, and noMDP vs MDP-EDC groups were performed by means of ANOVA with Bonferroni correction. Results The prevalence rate of EDC in the MDP group was significantly greater than in the noMDP group (66% vs. 12.1%). MDP-EDC group showed a significantly larger Л angle than in the MDP group resulting in an increased mesial inclination of displaced premolars. Conclusion MDP can be considered a dental anomaly associated to maxillary canine displacement.
2015
16
45
50
Goal 3: Good health and well-being for people
Mucedero, M; Franchi, L; Ricchiuti, M R; Cozza, P
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1004465
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