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The cohort had undergone a Herbst phase (mean 8.1\u00a0months) as well as a subsequent MBA phase (mean 14.4\u00a0months). Study casts were evaluated from pre-Tx and after Herbst-MBA Tx plus \u2265\u200924\u00a0months of retention.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>Ratable pre-Tx and post-retention study casts (total observation period 53.5\u2009\u00b1\u200910.3\u00a0months) were available from 94 out of 173 patients. No significant difference existed regarding pre-Tx LGR data between patients with and without complete records. The prevalence for teeth with LGR \u2265\u20090.5\u00a0mm was 1.4% pre-Tx respectively 6.7% post-retention. The highest values of up to 5.3% (pre-Tx) and 20.2% (post-retention) were determined for the upper first premolars and lower central incisors. Incidence values of 4.7% (all teeth) and up to 14.9% (upper first right premolars) respectively 11.1% (lower central incisors) were calculated (LGR \u2265\u20090.5\u00a0mm). The overall LGR mean magnitudes were 0.01\u00a0mm pre-Tx respectively 0.06\u00a0mm post-retention.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>For the prevalence of LGR \u2265\u20090.5\u00a0mm an average increase of 5.3% was determined during \u2248\u20094.5 years of Herbst-MBA Tx plus retention. The highest incidence was seen for lower central incisors and upper right premolars (11.1\/14.9%). The overall LGR mean magnitude increased by 0.05\u00a0mm.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Clinical relevance<\/jats:title>\n<jats:p>Herbst-MBA Tx is a common approach for class II:2 malocclusions. Very little, however, is known regarding LGR development in respective patients.<\/jats:p>\n<\/jats:sec>","DOI":"10.1007\/s00784-020-03243-2","type":"journal-article","created":{"date-parts":[[2020,2,27]],"date-time":"2020-02-27T22:18:36Z","timestamp":1582841916000},"page":"3653-3660","update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Class II:2 malocclusion\u2014prevalence and progression of labial gingival recessions during Herbst-Multibracket appliance treatment"],"prefix":"10.1007","volume":"24","author":[{"given":"N. 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