Predictive Factors of Ectopic Eruption of the Maxillary First Permanent Molar
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
In order to provide a diagnostic basis for predicting the possibility of the self-correction of ectopic first permanent molars, differences among normal eruption, reversible and irreversible ectopic eruption of maxillary first permanent molars were retrospectively analyzed. The angles of the long axes and the occlusal lines between the maxillary first permanent molar and the adjacent tooth were measured by panoramic radiographs. The occlusal relationship of second primary molars was also investigated. There is a statistically significant difference between the ectopic eruption group and normal group (p < 0.05), but not between the reversible and irreversible ectopic eruption groups (p > 0.05). The angles between the second primary molar and the first permanent molar, the second primary molar and the second permanent molar in ectopic groups showed a smaller degree than those of the control group. Mesial step was found more frequently in the ectopic eruption group than the normal group. In conclusion, the angulation of the first permanent molar and tooth germ of the maxillary second permanent molar showed close relation with ectopic eruption of the maxillary first permanent molar and ectopic first permanent molar is likely to occur in class Ⅲ patients with maxillary deficiency.
Abstract
In order to provide a diagnostic basis for predicting the possibility of the self-correction of ectopic first permanent molars, differences among normal eruption, reversible and irreversible ectopic eruption of maxillary first permanent molars were retrospectively analyzed. The angles of the long axes and the occlusal lines between the maxillary first permanent molar and the adjacent tooth were measured by panoramic radiographs. The occlusal relationship of second primary molars was also investigated. There is a statistically significant difference between the ectopic eruption group and normal group (p < 0.05), but not between the reversible and irreversible ectopic eruption groups (p > 0.05). The angles between the second primary molar and the first permanent molar, the second primary molar and the second permanent molar in ectopic groups showed a smaller degree than those of the control group. Mesial step was found more frequently in the ectopic eruption group than the normal group. In conclusion, the angulation of the first permanent molar and tooth germ of the maxillary second permanent molar showed close relation with ectopic eruption of the maxillary first permanent molar and ectopic first permanent molar is likely to occur in class Ⅲ patients with maxillary deficiency.
참고문헌 (24)
- Kurol J, "Ectopic eruption of maxillary first permanent molars : a review", ASDC J Dent Child, 53, pp.209~214 (1986)
- Yuen S, "Ectopic eruption of the maxillary permanent first molar : the effect of increased mesial angulation on arch length", J Am Dent Assoc, 111, pp.447~451 (1985)
- Young DH, "Ectopic eruption of the first permanent molar", J Dent Child, 24, pp.153~162 (1957)
- Barberia-Leache E, "Ectopic eruption of the maxillary first permanent molar : Characteristics and occurrence in growing children", Angle Orthod, 75, pp.610~615 (2005)
- Chintakanon K, "Ectopic eruption of the first permanent molars : prevalence and etiologic factors", Angle Orthod, 68, pp.153~160 (1998)
- Pulver F, "The etiology and prevalence of ectopic eruption of the maxillary first permanent molar", ASDC J Dent Child, 35, pp.138~146 (1968)
- Bjerklin K, "Ectopic eruption of the maxillary first permanent molar : etiologic factors", Am J Orthod, 84, pp.147~155 (1983)
- Cossman MH, "Ectopic eruption : first molar impaction in the mixed dentition", Dent Dig, 76, pp.349~353 (1970)
- Kurol J, "Resorption of maxillary second primary molars caused by ectopic eruption of the maxillary first permanent molar : a longitudinal and histological study", ASDC J Dent Child, 49, pp.273~279 (1982)
- Cheyne VD, "Impaction of permanent first molar with resorption and space loss in region of deciduous second molar", J Am Dent Assoc, 35, pp.774~787 (1947)
- Bjerklin K, "Ectopic eruption of the maxillary first permanent molar. An epidemiological, familial, etiological and longitudinal clinical study", Swed Dent J Suppl, 100, pp.1~66 (1994)
- Campbell OA, "Ectopic eruption of the first permanent molar", J N J Dent Assoc, 62, pp.62~65 (1991)
- Toutountzakis N, "Ectopic eruption of the maxillary first permanent molar", Orthod Epitheorese, 2, pp.117~128 (1990)
- Sheikhi M, "Accuracy and reliability of linear measurements using tangential projection and cone beam computed tomography", Dent Res J, 12, pp.271~277 (2015)
- Philipp RG, "The cant of the occlusal plane and distortion in the panoramic radiograph", Angle Orthod, 48, pp.317~323 (1978)
- Tronje G, "Image distortion in rotational panoramic radiography. III. Inclined objects", Acta Radiol Diagn, 22, pp.585~592 (1981)
- Samawi SS, "Angular distortion in the orthopantomogram", Br J Orthod, 11, pp.100~107 (1984)
- Stramotas S, "Accuracy of linear and angular measurements on panoramic radiographs taken at various positions in vitro", Eur J Orthod, 24, pp.43~52 (2002)
- 오미희, "양측성 제1대구치 이소맹출 치료의 치험례", 대한소아치과학회지, 40(1), pp.48~52 (2013), 대한소아치과학회
- Bjerklin K, "Prevalence of ectopic eruption of the maxillary first permanent molar", Swed Dent J, 5, pp.29~34 (1981)
- Kurol J, "Ectopic eruption of maxillary first permanent molars : familial tendencies", ASDC J Dent Child, 49, pp.35~38 (1982)
- Baume LJ, "Physiological tooth migration and its significance for the development of occlusion ; The biogenesis of accessional dentition", J Dent Res, 29, pp.331~337 (1950)
- Dean JA, "Dentistry for the child and adolescent", pp.518~520 (2011), Mosby
- Salbach A, "Correlation between the frequency of eruption disorders for first permanent molars and the occurrence of malocclusion in early mixed dentition", J Orofac Orthop, 73, pp.298~306 (2012)