PREVALENCE OF ECTOPIC ERUPTION OF FIRST PERMANENT MOLARS IN A TURKISH SAMPLE

Yeliz Güven
184

Abstract


Purpose: The aim of the present study is to investigate the prevalence and characteristics of ectopically erupting first permanent molar (FPM) in children.

Materials and Methods: This retrospective study was performed using panoramic radiographs of 7649 patients (3506 females, 4143 males) ranging in age from 5 to 11. Age, gender, number and location of ectopic molars, bilateral versus unilateral occurrence, degree of resorption on the roots of the primary molars and other associated dental anomalies were assessed. Ectopic eruption was categorized according to a grading system which is based on the resorption rates of the primary molars.

Results: Of the 7649 reviewed cases, 203 subjects (118 males and 85 females) were diagnosed as having ectopic eruption of the FPMs, giving a frequency of 2.65%. Ages of the subjects with ectopic FPMs ranged between 5 and 11 years with a mean age of 6.82±1.25 years. 157 out of 273 ectopic FPMs (57.5%) were detected in the maxilla and 116 (42.5%) in the mandible. Severe and very severe degree of ectopic eruption were found to be more common in maxilla than in mandible, while moderate degree of ectopic eruption was more prevalent in mandible.

Conclusion: Although left and right sides were similar in terms of ectopic FPM prevalence,severe and very severe degree of ectopic eruption were found to be more common in maxilla than in mandible, while moderate degree of ectopic eruption was more prevalent in mandible.


Keywords


Ectopic eruption; prevalence; primary second molar; severity; resorption



DOI: http://dx.doi.org/10.17096/jiufd.45227

References


Bjerklin K, Kurol J. Ectopic eruption of the maxillary first permanent molar: Etiologic factors. Am J Orthod 1983;84(2):147-155.

Chintakanon K, Boonpinon P. Ectopic eruption of the first permanent molars: Prevalence and etiologic factors. Angle Orthod 1998;68(2):153-160.

Mooney GC, Morgan AG, Rodd HD, North S. Ectopic eruption of first permanent molars: Presenting features and associations. Eur Arch Paediatr Dent 2007;8(3):153-157.

Bondemark L, Tsiopa J. Prevalence of ectopic eruption, impaction, retention and agenesis of the permanent second molar. Angle Orthod 2007;77(5):773-778.

Kimmel NA, Gellin ME, Bohannan HM, Kaplan AL. Ectopic eruption of maxillary first permanent molars in different areas of the united states. ASDC J Dent Child 1982;49(4):294-299.

Kurol J, Bjerklin K. Ectopic eruption of maxillary first permanent molars: A review. ASDC J Dent Child 1986;53(3):209-214.

Baccetti T. A clinical and statistical study of etiologic aspects related to associated tooth anomalies in number, size, and position. Minerva Stomatol 1998;47(12):655-663.

Bjerklin K, Kurol J, Valentin J. Ectopic eruption of maxillary first permanent molars and association with other tooth and developmental disturbances. Eur J Orthod 1992;14(5):369-375.

Pulver F. The etiology and prevalence of ectopic eruption of the maxillary first permanent molar. ASDC J Dent Child 1968;35(2):138-146.

Kurol J, Bjerklin K. Ectopic eruption of maxillary first permanent molars: Familial tendencies. ASDC J Dent Child 1982;49(1):35-38.

Barberia-Leache E, Suarez-Clua MC, Saavedra-Ontiveros D. Ectopic eruption of the maxillary first permanent molar: Characteristics and occurrence in growing children. Angle Orthod 2005;75(4):610-615.

Bjerklin K, Kurol J, Paulin G. Ectopic eruption of the maxillary first permanent molars in children with cleft lip and/or palate. Eur J Orthod 1993;15(6):535-540.

Carr GE, Mink JR. Ectopic eruption of the first permanent maxillary molar in cleft lip and cleft palate children. J Dent Child (Chic) 1965;32(179-188.

da Silva Filho OG, De Albuquerque MV, Kurol J. Ectopic eruption of maxillary first permanent molars in children with cleft lip. Angle Orthod 1996;66(5):373-380.

Larson M, Hellquist R, Jakobsson OP. Dental abnormalities and ectopic eruption in patients with isolated cleft palate. Scand J PlastReconstrSurg Hand Surg 1998;32(2):203-212.

Salbach A, Schremmer B, Grabowski R, Stahl de Castrillon F. Correlation between the frequency of eruption disorders for first permanent molars and the occurrence of malocclusions in early mixed dentition. J OrofacOrthop 2012;73(4):298-306.

Bjerklin K, Kurol J. Prevalence of ectopic eruption of the maxillary first permanent molar. Swed Dent J 1981;5(1):29-34.




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