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

Yu-Jin, Rah; Lee, Je-Woo; Ra, Ji-Eun

doi:10.5933/jkapd.2017.44.2.147

Cited by 5 publications

(6 citation statements)

References 8 publications

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“…Bjerklin, in agreement with Pulver, found that there is a tendency for the length of the maxilla to be decreased [12]. Rah et al, in agreement with previous authors, concluded that poor jaw growth has an impact on EEM [16,20].…”

Section: Author Yearsupporting

confidence: 66%

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Ectopic Eruption of Maxillary First Permanent Molars: Preliminary Results of Prevalence and Dentoskeletal Characteristics in Spanish Paediatric Population

et al. 2021

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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.

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Section: Author Yearsupporting

confidence: 66%

“…Table 5. Ectopic eruption of the maxillary first permanent molar prevalence data [1,5,[7][8][9]11,16,[19][20][21][22].…”

Section: Discussionmentioning

confidence: 99%

Ectopic Eruption of Maxillary First Permanent Molars: Preliminary Results of Prevalence and Dentoskeletal Characteristics in Spanish Paediatric Population

et al. 2021

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“…5 The prevalence of ectopic eruption of FPMs was reported between 0.75% and 11.8%, depending on the population studied. [4][5][6][7][8][9][10][11] In the present study, a prevalence of 2% was found, consistent with the prevalence results of some studies in the literature. 7,[24][25][26][27] The differences in these rates have been attributed to many factors, such as different sample sizes, patient inclusion criteria, diagnostic methods, assessment criteria, geography, ethnicity, age of the population, caries status, and genetic factors.…”

Section: Discussionsupporting

confidence: 91%

“…The prevalence rate of ectopic eruption of FPMs ranges from 0.75% to 11.8% in the normal population. [4][5][6][7][8][9][10][11] The variations in these prevalence rates have been associated with several factors including sample size, geographic location, ethnic background, age distribution, caries status, and genetic factors. 6,11 Higher prevalence rates were reported in siblings and patients with cleft lips or palates.…”

Section: Introductionmentioning

confidence: 99%

Prevalence and characteristics of ectopic eruption of the first permanent molar and predictive factors for clinical outcome

Kurkutan,

Gündoğar,

Keskin

2023

Journal of Oral Health and Oral Epidemiology

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Background: The primary objective of this study was to assess the occurrence, distribution, and features of ectopic first permanent molars (FPMs), as well as to investigate the clinical outcomes associated with ectopic eruption based on the degree of root resorption observed in primary second molars. Methods: This study was performed retrospectively by examining panoramic radiographs of 7070 patients aged 5 to 12 years. The gender and age of the patients, the number, location, and distribution mode of ectopic FPMs, the resorption degree of the distal roots of primary second molars, and the clinical outcome of ectopic eruption were evaluated. Descriptive statistics and chi-square test were performed on the obtained data using SPSS version 22 (SPSS Inc, Chicago, IL, USA). Results: In 144 of 7070 cases, a total of 221 ectopic permanent first molar teeth were detected (2% prevalence). The mean age of the 144 patients was 8.04 years. Ectopic eruption was most common in patients aged 7–8 years (48.63%), which was statistically significant (P<0.05). Ectopic eruptions were more common in females (58.30%) than males (41.70%; P<0.05). Of the ectopic permanent first molars, 78 (35.30%) were in the mandible, and 143 (64.70%) were in the maxilla. The relationship between the degree of resorption and the type of ectopic eruption was statistically significant (P<0.05). Conclusion: The increase in the severity of root resorption in the primary second molars was a significant predictor for the prognosis of ectopic eruption in the present study. Early diagnosis and treatment of ectopic FPMs are of great importance to preventing premature loss of primary second molars resulting in malocclusion.

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“…Intraoral view, the delay in the eruption of unilateral or bilateral maxillary FPM, and the eruption of distal tubercles of these teeth before mesial tubercles should suggest the EE of these teeth. 7 In general, FPM with EE are impacted below the distal roots of PSM. 8 If they are not treated in time, they may lead to premature root resorption of PSM, pulp obliteration, neuralgic pain, or premature exfoliation, which may lead to premature loss of primary teeth, reduced arch length, and delayed eruption of permanent teeth.…”

mentioning

confidence: 99%

Use of Two Different Classification Systems to Determine the Characteristics of Ectopic Eruption in the First Permanent Molars: A Retrospective Cross-Sectional Study

ÖZDEMİR¹,

ALTAN²

2022

Turkiye Klinikleri J Dental Sci

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The aim of this study is to determine the incidence of ectopic eruption in permanent first molar teeth retrospectively with 2 different classification methods, based on radiographic findings, during the transition from primary dentition to permanent dentition. Material and Methods: This study was conducted with children aged between 6-12 years admitted to pediatric dentistry department. The orthopantomographic radiographs of 2,516 patients were examined. The patients' age and gender, teeth with ectopic eruption and the jaw were recorded. In the classification of ectopic eruption, Young and Barberia-Leache et al.'s classification was used. Data were analyzed with IBM SPSS V23. Differences between teeth were examined with Cochran's Q test. The correlation between Barberia-Leache classification and Young's classification was evaluated with the chi-square test. Significance level was taken as p<0.05. Results: A total of 2,516 patients were included in the study and ectopic eruption was seen in a total of 70 teeth in 47 (23 girls, 24 boys) patients. The prevalence of ectopic eruption was found to be 1.9%. Ectopic eruption of the permanent first molar tooth was seen more in the upper jaw than in the lower jaw. According to Young's classification, the prevalence of permanent first molar eruption in reversible type is higher, while the prevalence of Grade I permanent first molar ectopic eruption is higher according to Barberia-Leache et al.'s classification. Conclusion: Even in cases of ectopic eruption in permanent first molars that are considered severe according to Barberia-Leache et al. classification and Young's classification, spontaneous recovery can be observed with long-term follow-up.

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

Cited by 5 publications

References 8 publications

Ectopic Eruption of Maxillary First Permanent Molars: Preliminary Results of Prevalence and Dentoskeletal Characteristics in Spanish Paediatric Population

Ectopic Eruption of Maxillary First Permanent Molars: Preliminary Results of Prevalence and Dentoskeletal Characteristics in Spanish Paediatric Population

Prevalence and characteristics of ectopic eruption of the first permanent molar and predictive factors for clinical outcome

Use of Two Different Classification Systems to Determine the Characteristics of Ectopic Eruption in the First Permanent Molars: A Retrospective Cross-Sectional Study

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