J Korean Acad Pediatr Dent.  2018 Nov;45(4):484-491. 10.5933/JKAPD.2018.45.4.484.

Tooth Agenesis and Delay in Patients with Agenesis of Mandibular Second Premolars

• Park M
• Kim SO
• Song JS
• Lee J

• KMID: 2431340
• DOI: http://doi.org/10.5933/JKAPD.2018.45.4.484

Abstract

Tooth agenesis is a common human dental anomaly and the agenesis of mandibular second premolars has been proven to be the most frequently observed. The aim of this study is to investigate tooth agenesis and delayed tooth development in patients with agenesis of mandibular second premolars. This study reviewed 9 to 15 year-old patients with agenesis of mandibular second premolars who visited the department of pediatric dentistry of Yonsei University Dental Hospital and took panoramic radiographs from January 2014 to December 2016. On panoramic radiographs, agenesis of teeth was observed and developmental delay of teeth was evaluated by the Nolla method. Among 125 patients with agenesis of mandibular second premolars, 58 patients (46.4%) showed agenesis of other teeth and 38 patients (30.4%) showed delayed tooth development. In this study, patients with agenesis of mandibular second premolars were more likely to have tooth agenesis or delayed eruption of other teeth.

Keyword

Tooth agenesis; Mandibular second premolar; Delayed tooth development

MeSH Terms

Bicuspid*
Humans
Methods
Pediatric Dentistry
Tooth*