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

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