Development of supernumerary premolars in the mandible after orthodontic extraction - A case report

Yongwen Guo,Ding Bai,Xueming Wang

doi:10.15761/mca.1000103

Abstract

Development of supernumerary premolars in the mandible after orthodontic extraction - A case report

Highlights

Supernumerary teeth may be defined as any teeth or tooth substance in excess of the usual configuration of twenty deciduous, and thirty-two permanent teeth [1]
Supernumerary premolars are relatively rare and they constitute almost 10% of the total supernumerary cases, of which the prevalence reported in the literatures varies between 0.5% and 5.3% in the permanent dentition, and proximately 75% of those are in the mandible [4,5]
What is special about this case is that the supernumerary premolars were developed after the orthodontic extraction of the first premolars, and they positioned exactly at the places where the extracted premolars used to be

Summary

Introduction

Supernumerary teeth may be defined as any teeth or tooth substance in excess of the usual configuration of twenty deciduous, and thirty-two permanent teeth [1]. They may occur in any region of the dental arch, either as isolated events or multiply, unilaterally or bilaterally, erupted or unerupted, in single or both arches, or as part of a syndrome or disease, or can be found in non-syndromic patients [2,3]. Yusof’s review found that mandibular premolar region was the most common site of occurrence for non-syndrome associated supernumerary teeth [6]. What is special about this case is that the supernumerary premolars were developed after the orthodontic extraction of the first premolars, and they positioned exactly at the places where the extracted premolars used to be

Case report

Findings

Discussion