Association between mesially displaced maxillary first premolars and early displaced maxillary canines.
Eur J Paediatr Dent
; 16(1): 45-50, 2015 Mar.
Article
in En
| MEDLINE
| ID: mdl-25793953
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 ANDMETHODS:
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.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tooth Eruption, Ectopic
/
Bicuspid
/
Cuspid
/
Maxilla
Type of study:
Prevalence_studies
Limits:
Child
/
Female
/
Humans
/
Male
Country/Region as subject:
Europa
Language:
En
Journal:
Eur J Paediatr Dent
Journal subject:
ODONTOLOGIA
/
PEDIATRIA
Year:
2015
Document type:
Article
Affiliation country:
Italia