{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,31]],"date-time":"2026-10-31T17:36:30Z","timestamp":1793468190336,"version":"4.5.0"},"reference-count":22,"publisher":"Springer Science and Business Media LLC","issue":"5","license":[{"start":{"date-parts":[[2023,1,18]],"date-time":"2023-01-18T00:00:00Z","timestamp":1674000000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2023,1,18]],"date-time":"2023-01-18T00:00:00Z","timestamp":1674000000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["J Orofac Orthop"],"published-print":{"date-parts":[[2024,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Purpose<\/jats:title>\n                <jats:p>The twin block (TB) is one of the most widely used functional appliances for the correction of class\u00a0II malocclusions. Align Technology (San Jose, CA, USA) developed the Invisalign\u00ae mandibular advancement (MA) that replicates the mechanism of action of a\u00a0functional appliance. The aim of this study was to compare the changes produced by the TB versus those by MA.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>The records of 56\u00a0class\u00a0II patients treated with the TB (TB group: <jats:italic>n<\/jats:italic>\u202f=\u200935) or the MA (MA group: <jats:italic>n<\/jats:italic>\u202f=\u200921) were compared to a\u00a0control sample of 15 untreated class\u00a0II subjects (UC2).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The TB and MA groups showed a\u00a0significant reduction of the ANB angle, compared to the controls (TB group: \u22121.5\u00b0; MA group: \u22121.5\u00b0; UC2 group: +0.2\u00b0). For the Co-Gn values, the TB and MA groups showed significant differences when compared with the UC2 group with an increase of 8.4\u202fmm in TB patients and of 8.3\u202fmm in MA patients. The increase of the distance of Pg to the true vertical line (TVL) was the only measurement where significant differences between the three groups were found with a\u00a0greater advancement of the soft tissue pogonion in the TB group compared with the MA group and the UC2 group (TB group: +3\u202fmm; MA group: +0.9\u202fmm; UC2 group: \u22121.6\u202fmm). The angle between the palatal plane and mandibular plane revealed a\u00a0more relevant reduction in the TB and MA groups. Both appliances were able to reduce overjet and vertical overbite values.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Treatment with the MA and TB appliances produced a\u00a0significant elongation of the mandible with an improvement in sagittal relationship, overjet, and vertical overbite and with good control of the vertical relationship. TB subjects showed a\u00a0greater advancement of the soft tissue chin.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00056-022-00443-1","type":"journal-article","created":{"date-parts":[[2023,1,18]],"date-time":"2023-01-18T13:03:10Z","timestamp":1674046990000},"page":"317-326","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":39,"title":["Dentoskeletal effects of clear aligner vs twin block\u2014a\u00a0short-term study of functional appliances","Dentoskelettale Auswirkungen von Clear Aligner vs. Twin Block\u00a0\u2013 eine Kurzzeitstudie zu funktionellen Apparaturen"],"prefix":"10.1007","volume":"85","author":[{"given":"Elisabetta Cretella","family":"Lombardo","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roberta","family":"Lione","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lorenzo","family":"Franchi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francesca","family":"Gaffuri","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cinzia","family":"Maspero","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paola","family":"Cozza","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chiara","family":"Pavoni","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,1,18]]},"reference":[{"key":"443_CR1","doi-asserted-by":"publisher","first-page":"950","DOI":"10.2319\/110205-385","volume":"76","author":"L Franchi","year":"2006","unstructured":"Franchi\u00a0L, Baccetti\u00a0T (2006) Prediction of individual mandibular changes induced by functional jaws orthopedics followed by fixed appliances in class II patients. 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