RT Journal Article
T1 Ectopic eruption of maxillary first permanent molars: Preliminary results of prevalence and dentoskeletal characteristics in Spanish paediatric population
A1 Helm, Alexandra
A1 Martín Vacas, Andrea
A1 Molinero Mourelle, Pedro
A1 Caleya Zambrano, Antonia María
A1 Gallardo López, Nuria Esther
A1 Mourelle Martínez, Rosa
AB 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
PB MDPI
SN 2227-9067
YR 2021
FD 2021-06-06
LK https://hdl.handle.net/20.500.14352/109318
UL https://hdl.handle.net/20.500.14352/109318
LA eng
NO Helm, A.; Martín-Vacas, A.; Molinero-Mourelle, P.; Caleya, A.M.; Gallardo, N.E.; Mourelle-Martínez, M.R. Ectopic Eruption of Maxillary First Permanent Molars: Preliminary Results of Prevalence and Dentoskeletal Characteristics in Spanish Paediatric Population. Children 2021, 8, 479. https:// doi.org/10.3390/children8060479
DS Docta Complutense
RD 6 abr 2025