Correlation between the frequency of eruption disorders for first permanent molars and the occurrence of malocclusions in early mixed dentition

Abstract

Delayed eruption and false direction of eruption of the upper 6-year molars may-already at an early stage-raise the likelihood of problems during later dental arch development, such as crowding in the sagittal and transverse directions or Class III developments.

Padrão epidemiológico da má oclusão em pré-escolares brasileiros

“…The characterization of malocclusion in 5 year-olds has not been well clarified in the literature, considering a representative sample of Brazil, hindering their comparison. Similar prevalence of malocclusion was found among children from Germany (72%) 12 and Lithuania (71%) 17 . A different prevalence is observed when considering studies performed in different regions of Brazil pointing to local characteristics of the disease.…”

“…The occlusion-related problems are characterized by alterations in the development of maxillaries, which can result in functional, aesthetic and psychosocial alterations in individuals 5,6 , and are the result of an interaction of genetic and environmental factors [7][8][9] . Among preschoolers, occlusion-related problems have been associated with different factors, such as anthropometric deficit 10 , unhealthy habits, such as pacifier or finger sucking habit 11 , dental eruption disorders 12 and other oral disorders, such as dental traumatism 13 and dental caries 14 . Also, the presence of malocclusion in this age group has been associated with a negative impact on the quality of life of children and their families 15 .…”

“…In Brazil, the prevalence of occlusal problems in preschoolers has ranged from 28% to 80%, according to the location of the studies 11,13,15,18 , which highlights the possibility of the association of regional characteristics in the occurrence of this problem, because malocclusion evaluation criteria used are different in these studies. According to data from the last two national oral health surveys of the Brazilian population 1,2 , the presence of an occlusal problem in 5-year-olds increased by 28.2% between the two surveys 12 .…”

Association between Ectopic Eruption of the Maxillary First Permanent Molar and Skeletal Malocclusion

“…Previous studies have reported that the prevalence of ectopic eruption of the maxillary first permanent molar varies between 0.75% and 6% [11][12][13]; the large variation in the prevalence is affected by the sample sizes [14]. In addition, Carr and…”

A simple and effective technique to guide the ectopic eruption of a first permanent molar: a case report

“…They are statistically significant more frequently in conjunction with crowding, lateral crossbite, tendency for Class III malocclusion, and individual deviations of teeth 9 . In this case report, the patient was five years old and presented maxillary atresia and crowding in the lower arch.…”