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Risk factors associated with open gingival embrasures after orthodontic treatment

Authors
 Sang Su An  ;  Yoon Jeong Choi  ;  Ji Young Kim  ;  Chooryung J Chung  ;  Kyung-Ho Kim 
Citation
 ANGLE ORTHODONTIST, Vol.88(3) : 267-274, 2018 
Journal Title
 ANGLE ORTHODONTIST 
ISSN
 0003-3219 
Issue Date
2018
Keywords
Black triangle ; Open gingival embrasure ; Orthodontic treatment
Abstract
OBJECTIVES: To investigate the incidence of and contributing factors to open gingival embrasures between the central incisors after orthodontic treatment. MATERIALS AND METHODS: One hundred posttreatment patients (29 men and 71 women; mean age, 24.7 years) were divided retrospectively into occurrence and nonoccurrence groups based on intraoral photographs. Based on the severity, the occurrence group was further divided into mild, moderate, and severe groups. Parameters from periapical radiographs, superimposed lateral cephalograms, and study models were compared between the occurrence and the nonoccurrence groups by using independent t-tests and were also analyzed on the basis of severity via analysis of variance. Logistic regression analysis was performed to identify the contributing factors to open gingival embrasures. RESULTS: The incidence of open gingival embrasures between the central incisors was 22% and 36% in the maxilla and the mandible, respectively. Lingual movement of the incisors, distance from the contact point to the alveolar crest after treatment, antero-posterior overlap of the two central incisors before treatment in the maxilla, and distance from the contact point to the alveolar crest after treatment in the mandible were significantly associated with the occurrence of open gingival embrasures ( P < .05). In the mandible, the amount of intrusion was significantly related to severity ( P < .05). CONCLUSIONS: The incidence of open gingival embrasures following orthodontic tooth movement is high. Therefore, attention should be paid to the contributing factors to prevent or reduce the occurrence of open gingival embrasures.
Full Text
http://www.angle.org/doi/10.2319/061917-399.12?code=angf-site
DOI
10.2319/061917-399.12
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyung Ho(김경호) ORCID logo https://orcid.org/0000-0002-8154-2041
Chung, Chooryung J.(정주령) ORCID logo https://orcid.org/0000-0001-9399-7193
Choi, Yoon Jeong(최윤정) ORCID logo https://orcid.org/0000-0003-0781-8836
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/162311
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