October 28-30, 2022 · COEX, Seoul, Korea

A Retrospective Study on the Prevalence of Orthodontic Problems in 6,7,8-year-old Korean Using Panoramic Radiograph

Jiyeon Lee (이지연)

1996
graduated from Yonsei University College of Dentistry
1996~1999
completed orthodontic specialty training in the department of Orthodontics Yonsei University Gangnam Severance Hospital and received an orthodontic certificate in 1999.
1999
Master of Science degree in Orthodontics and 2010 Ph.D. of Dental Science (Orthodontics) from Yonsei University
1999~2003
worked as a full-time instructor and assistant professor at Daegu Catholic University Medical Center
2003~2004
served as a visiting assistant professor at Oregon Health and Sciences University
2005~ Now
Chair of the department of dentistry and department of orthodontics in National Health Insurance Service Ilsan Hospital

Clinical Professor of Yonsei University, College of Dentistry

Lecture Description

Objective: The purpose of this study is to retrospectively analyze the prevalence of orthodontic problems and the proportion of patients who underwent the examination for orthodontic diagnosis in the 6-year-old(n=300), 7-year-old(n=400), 8-year-old(n=400) children who took the panoramic radiographs.

Methods: 6,7,8-year-old children who took panoramic radiographs were divided into five groups; the department of conservative dentistry (COD), oral and maxillofacial surgery (OMS), orthodontics (ORD), periodontics (PDD), and prosthodontics (PRD) according to the patient’s chief complaint. We investigated the patients’ chief complaints and checked the eruption of the first molars, the lack of eruption space of the incisors, the frequency of patients with tooth eruption disorders, lack of space, impaction, a supernumerary tooth (SNT), missing tooth, and ectopic eruption. Among the four groups whose main complaint is not for the orthodontic department, we counted the number of patients with dental problems requiring orthodontic treatment. We studied the rate of the patients with orthodontic issues who received an orthodontic diagnosis or not.

Results: Dental trauma 44,34%, respectively) showed the most frequent chief complaints in 6 and 8-year-old patients, but SNT (26%) in 7-year-old patients. The coronal inclination of canines of all patient groups showed mesial inclination. Only 1.5%(6-year-old) and 23%(7,8-year-old) of patients with orthodontic problems who first visited OMS & COD underwent the examination for orthodontic diagnosis.

Conclusions: In this study, most canines showed mesial inclination in all age groups. The proportion of patients who had orthodontic problems increased along with age. However, only 1.5, 23, and 23% (6,7,8-year-old, respectively) of patients who required orthodontic treatment underwent the examination for orthodontic diagnosis. Even though the appropriate time for orthodontic treatment is different for each patient, an orthodontic diagnostic examination should be performed to establish an accurate treatment plan and solve the problem. Proper information should correct the misconception that it is appropriate to delay orthodontic examination until permanent dentition to patient caregivers.

October 28-30, 2022 · COEX, Seoul, Korea

KAOF Scientific Research