The Relationship between Additional Mesiopalatal Roots of Maxillary Primary Second Molars and Premolars (상악 제2유구치의 근심구개측 부가치근과 상악 제2소구치 사이의 연관성)

Woobum Jung (정우범); Lee Ko Eun (이고은); Kim Mi Sun (김미선); NAM OK HYUNG (남옥형); Chul Choi Sung (최성철); KIM， KWANG CHUL (김광철); Lee Hyo-Seol (이효설)

doi:10.5933/JKAPD.2020.47.4.368

The Relationship between Additional Mesiopalatal Roots of Maxillary Primary Second Molars and Premolars

Journal of the Korean academy of pediatric dentistry
Abbr : J Korean Acad Pediatr Dent
2020, 47(4), pp.368-376
DOI : 10.5933/JKAPD.2020.47.4.368
Publisher : The Korean Academy Of Pediatric Dentistry
Research Area : Medicine and Pharmacy > Dentistry
Received : March 30, 2020
Accepted : May 13, 2020
Published : November 30, 2020

Woobum Jung ¹, Lee Ko Eun ², Kim Mi Sun ², NAM OK HYUNG ², Chul Choi Sung ², KIM， KWANG CHUL ², Lee Hyo-Seol ²

¹경희의료원
²경희대학교

Accredited

ABSTRACT

The primary maxillary second molars usually have three roots. However, an additional root located mesiopalatally is occasionally observed. This study aimed to determine the relationship between a mesiopalatal root of primary maxillary second molars and an abnormal eruption pattern of maxillary second premolars. The study was performed on cone beam computed tomography images taken from 916 children who visited the Dental Hospital of Kyung Hee University from 2010 to 2018. 744 serial cross-sectional cone beam computed tomography images were evaluated. The overall incidence of the mesiopalatal root of primary maxillary second molars was 3.2% (n = 24) and the abnormal eruption pattern of maxillary second premolars was 19.2% (n = 143). Especially, patients with the mesiopalatal root of primary maxillary second molars were significantly more likely to have the abnormal eruption pattern on maxillary second premolars (p = 0.000). The odds of the abnormal eruption pattern of maxillary second premolars with the mesiopalatal root of primary maxillary second molars was about 13 times higher than those without. The eruption pattern of the permanent successor should be carefully observed and treated if the mesiopalatal root of primary maxillary second molar is existent.

KEYWORDS

Primary maxillary second molar, Maxillary second premolar, Mesiopalatal root, Abnormal eruption pattern

Citation status

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

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

The Relationship between Additional Mesiopalatal Roots of Maxillary Primary Second Molars and Premolars

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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

The Relationship between Additional Mesiopalatal Roots of Maxillary Primary Second Molars and Premolars

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