Factors and Treatments Influencing the Unilaterally Unerupted Maxillary Central Incisor (상악 중절치의 편측성 맹출 장애 원인 및 치료)

Hyojung Choi (최효정); NAM Soon-Hyeun (남순현); Kim, Hyun - Jung (김현정)

doi:10.5933/JKAPD.2018.45.3.334

Factors and Treatments Influencing the Unilaterally Unerupted Maxillary Central Incisor

Journal of the Korean academy of pediatric dentistry
Abbr : J Korean Acad Pediatr Dent
2018, 45(3), pp.334-343
DOI : 10.5933/JKAPD.2018.45.3.334
Publisher : The Korean Academy Of Pediatric Dentistry
Research Area : Medicine and Pharmacy > Dentistry
Received : November 28, 2017
Accepted : December 6, 2017
Published : August 31, 2018

Hyojung Choi ¹, NAM Soon-Hyeun ², Kim, Hyun - Jung ²

¹경북대학교 치의학전문대학원 소아치과학교실
²경북대학교

Accredited

ABSTRACT

The purpose of this study was to investigate the cause of eruption disturbance in the maxillary central incisor and establish the effective treatment plan by analyzing the vertical distance, angulation of long axis and root development of the tooth with eruption disturbance using the cone-beam CT. The average age of 134 patients diagnosed with unilaterally impacted maxillary central incisor was 7.9 years old and the male was 2.1 times higher than the female. The most common cause of eruption disorder was physical obstruction, especially mesiodens and odontoma. Of the teeth with unilateral eruption disorder, 78 cases erupted spontaneously and 56 cases erupted non-spontaneously after removal of physical obstruction. The possibility of spontaneous or non-spontaneous eruption in the unilaterally impacted maxillary central incisor depended on several factors, such as vertical distance, angulation of long axis and root development of unerupted tooth. The spontaneous eruption of the impacted maxillary cental incisor was most frequent at the angulation of long axis of 50 to 90 degrees, which is similar to the angulation of long axis of the normally erupted maxillary central incisor. In addition, the spontaneous eruption period of impacted maxillary central incisor was more influenced by the vertical distance than the angulation of long axis and the root development. Most of the teeth that showed non-spontaneous eruption had orthodontic traction, and these teeth were usually erupted within about 12 months. The period treated with orthodontic traction was no statistical significance with the vertical distance, the angulation of long axis, and the root development. This study will provide information on the cause of unilaterally impacted maxillary cental incisor and help to establish the future treatment plan.

KEYWORDS

Maxillary central incisor, Delayed eruption, Impacted tooth, Spontaneous eruption, Non-spontaneous eruption

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Journal of the Korean academy of pediatric dentistry 2023 KCI Impact Factor : 0.48

Factors and Treatments Influencing the Unilaterally Unerupted Maxillary Central Incisor

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* References for papers published after 2023 are currently being built.

Journal of the Korean academy of pediatric dentistry 2023 KCI Impact Factor : 0.48

Factors and Treatments Influencing the Unilaterally Unerupted Maxillary Central Incisor

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