A clinical epidemiologic analysis of a sample of 73 supernumerary premolars.
BACKGROUND
The authors conducted a retrospective study to determine the prevalence of supernumerary premolars in sample of patients from Madrid, as well as the possible complications associated with the presence of such supernumerary premolars.


METHODS
The study included a data assessment of all patients seeking dental care at a hospital's department of oral surgery across four years. The authors studied data from patients who had supernumerary premolars.


RESULTS
The authors identified supernumerary premolars in the records of 43 patients (0.32 percent) of the total population studied. These patients had 73 hyperdontic premolars (65 mandibular premolars [89 percent] and eight maxillary premolars [11 percent]).


CONCLUSIONS
Supernumerary premolars usually are diagnosed as a coincidental radiographic finding without an associated pathology. However, the authors found a higher percentage of comorbidity than they initially expected.


CONCLUSIONS
Mechanical or obstructive pathology was associated with 2.7 percent of the premolars, and enlargement of the follicular sac of more than 3 millimeters was present in 26.0 percent of the sample.
School of Dentistry, Complutense University of Madrid, Spain.
José M
JM
Martínez-González
Jorge Cortés-Bretón
JC
Brinkmann
José Luis
JL
Calvo-Guirado
Oscar
O
Arias-Irimia
Cristina
C
Barona-Dorado
D000293:Adolescent; D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D001641:Bicuspid / Q000000981:diagnostic imaging / Q000601:surgery*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012189:Retrospective Studies; D013030:Spain / Q000453:epidemiology; D014096:Tooth, Supernumerary / Q000150:complications / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000601:surgery; D055815:Young Adult