2001 Aug;120(2):116-23. doi: 10.1067/mod.2001.114831.Am J Orthod Dentofacial Orthop.

The purposes of this study were to determine the prevalence of posttreatment open gingival embrasures in adult orthodontic patients and to examine the association of pretreatment maxillary incisor malalignment, posttreatment alveolar bone height, interproximal contact position, root angulation, crown shape, and embrasure area with open gingival embrasures. Objectives: To investigate the incidence of and contributing factors to open gingival embrasures between the central incisors after orthodontic treatment. Embrasure areas larger than 5.09 mmReprint requests to: Jacklyn R. Kurth, DDS, MSD, 1268 East Main St, Auburn, WA 98002-5798; e-mail, We use cookies to help provide and enhance our service and tailor content and ads. Open gingival embrasures after orthodontic treatment in adults: Prevalence and etiology Jacklyn R. Kurth, DDS, MSD,a and Vincent G. Kokich, DDS, MSDb Auburn and Tacoma, Wash The purposes of this study were to determine the prevalence of posttreatment open gingival embrasures in Published by Mosby, Inc. All rights reserved.ScienceDirect ® is a registered trademark of Elsevier B.V. Open Gingival Embrasures After Orthodontic Treatment in Adults Author(s): Vincent G. Kokich, Sr., DDS, MSD;Jacklyn R. Kurth, DDS, MSD Date Added: 8/1/2001. Unable to load your delegates due to an error Ko-Kimura N, Kimura-Hayashi M, Yamaguchi M, Ikeda T, Meguro D, Kanekawa M, Kasai K.Am J Orthod Dentofacial Orthop. Name must be less than 100 characters Open gingival embrasures were found to have more divergent root angulations and more divergent or triangular-shaped crown forms than normal gingival embrasures. A subsample of 119 patients was identified for measurement and divided into 2 groups: normal gingival embrasures and open gingival embrasures. Please enable it to take advantage of the complete set of features! The incidence of open gingival embrasures between the central incisors was 22% and 36% in the maxilla and the mandible, respectively.

Open gingival embrasures or "black triangles" can be an undesirable outcome of adult orthodontic treatment. This site needs JavaScript to work properly. Clipboard, Search History, and several other advanced features are temporarily unavailable. ScienceDirect ® is a registered trademark of Elsevier B.V.Open gingival embrasures after orthodontic treatment in adults: Prevalence and etiologyCopyright © 2001 American Association of Orthodontists.
Unable to load your collection due to an error Open gingival embrasures or "black triangles" can be an undesirable outcome of adult orthodontic treatment. Short and more incisally positioned posttreatment interproximal contacts were associated with open gingival embrasures. The purposes of this study were to determine the prevalence of posttreatment open gingival embrasures in adult orthodontic patients and to examine the association of pretreatment maxillary incisor malalignment, posttreatment alveolar bone height, interproximal contact position, root angulation, crown shape, and embrasure area with open gingival embrasures. 2011 Jan;139(1):49-54. doi: 10.1016/j.ajodo.2009.03.049.J Esthet Restor Dent.

2010 Feb;22(1):18-28. doi: 10.1111/j.1708-8240.2009.00307.x. Approximately 42 per cent of the subjects in the shorter treatment group had open gingival embrasures, and 44.4 per cent of those whose treatment took longer than 3 years had open gingival embrasures. The incidence of open gingival embrasures between the central incisors was 22% and 36% in the maxilla and the mandible, respectively. A posttreatment alveolar boneinterproximal contact distance greater than 5.5 mm was associated with open gingival embrasures.
The prevalence of posttreatment open gingival embrasures in adult orthodontic patients was 38%.

Digital images of the pretreatment maxillary models and posttreatment maxillary central incisor periapical radiographs were made to measure the pretreatment and posttreatment variables. COVID-19 is an emerging, rapidly evolving situation.

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. If all the papilla are at the same level, and the adjacent gingival embrasures are closed, you know you have a problem of contact length creating the open embrasure. By continuing you agree to the Copyright © 2020 Elsevier B.V. or its licensors or contributors. Posttreatment intraoral photographs of 337 adult orthodontic patients were evaluated to determine the prevalence of open gingival embrasures. Pretreatment maxillary central incisor rotation and overlap were not statistically associated with posttreatment open gingival embrasures.