Ectopic Eruption of Maxillary First Permanent Molars: Preliminary Results of Prevalence and Dentoskeletal Characteristics in Spanish Paediatric Population.
Publisher DOI
PubMed ID
34204053
Abstract
The ectopic eruption of the maxillary first permanent molar (EEM) is a local alteration of dental eruption with a multifactorial aetiology. The aims of our study were to determine the prevalence of the EEM in children and to analyse whether there is a relationship between EEM and dento-skeletal characteristics. A total of 322 children were analysed with the Ricketts cephalometric study and descriptive and analytical statistical analysis was carried out. The prevalence of EEM was 8.7%, with no statistically significant differences regarding gender or location, but a higher prevalence in the 7-year-old age group (18.8%) and bilateral EEM was more prevalent than unilateral EEM (p < 0.05). The most frequent findings were a shortened anterior cranial base, a retroposition of the maxilla and a distal position of the upper permanent first molar in relation to the pterygoid vertical in children with EEM. No statistically significant differences were found regarding the cephalometric parameters except a decreased palatal plane in the bilateral EEM group and a distal upper incisor position in the EEM group (p < 0.05). In conclusion, the prevalence of the EEM was 8.7%, more frequently bilateral, and significantly in seven-year-old patients. Children with bilateral EEM have decreased palatal plane values and a more posterior position of the upper incisor.
Date Issued
2021-06-06
Publication Type
Article
Subject(s)
Subjects
children ectopy eruption first permanent molar molar orthodontics interceptive patient care planning tooth eruption
Language(s)
en
Author(s)
Helm, Alexandra | |
Martín-Vacas, Andrea | |
Caleya, Antonia M | |
Gallardo, Nuria E | |
Mourelle-Martínez, María Rosa |
Journal
Children
Publisher
MDPI
ISSN
2227-9067
Access(Rights)
open.access