Journal article

Publication year: 2019

Pages: 535-543

Journal: Angle Orthodontist

Volume number: 89

Issue number: 4

ISSN: 0003-3219

eISSN: 1945-7103

Open access status: Gold

DOI Link: https://doi.org/10.2319/032918-239.1

Publisher: E.H Angle Education and Research Foundation

Abstract: 

Objective: To assess the prevalence and magnitude of labial gingival recession (LGR) before and after as well as the incidence during Class II: 1 Herbst-Multibracket appliance (Herbst-MBA) treatment (Tx) plus retention in a retrospective cohort study.

Materials and Methods: Records of Class II: 1 patients who completed Herbst-MBA Tx (mean pre-Tx age 14.4 years) at Department of Orthodontics, University of Giessen, Giessen, Germany were analyzed. Tx consisted of a Herbst phase (mean 8.1 months) and a subsequent MBA phase (mean 16.1 months). Study casts from before and after Herbst-MBA Tx plus >= 24 months of retention were evaluated.

Results: A total of 460 pre-Tx and 222 postretention study casts were available (total observation period: 59.2+/-14.8 months). The overall prevalence for teeth with LGR >= 0.5 mm was 1.1% pre-Tx and 5.3% postretention. The highest prevalence of up to 5.3% (pre-Tx) and 16.4% (postretention) were seen for the lower incisors. Overall, the median magnitude of LGR was 0.0 mm pre-Tx/ postretention (mean: 0.05 mm/0.08 mm). Incidence values of 4.0% (all teeth) and 10.0% to 11.4% (lower central incisors) were calculated for LGR >= 0.5 mm.

Conclusions: The prevalence of LGR >= 0.5 mm increased from, on average, 1.1% to 5.3% during approximate to 6 years of Herbst-MBA Tx plus retention. The highest incidence was seen in lower incisors (10.0%-11.4%). However, because of the overall mean magnitude of 0.08 mm postretention, the clinical relevance can be considered as insignificant.

Harvard Citation style: Bock, N., Ruehl, J. and Ruf, S. (2019) Prevalence, magnitude, and incidence of labial gingival recession with Herbst-multibracket appliance treatment: A retrospective cohort study, Angle Orthodontist, 89(4), pp. 535-543. https://doi.org/10.2319/032918-239.1

APA Citation style: Bock, N., Ruehl, J., & Ruf, S. (2019). Prevalence, magnitude, and incidence of labial gingival recession with Herbst-multibracket appliance treatment: A retrospective cohort study. Angle Orthodontist. 89(4), 535-543. https://doi.org/10.2319/032918-239.1