{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:17:18Z","timestamp":1760231838933,"version":"build-2065373602"},"reference-count":25,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2022,5,27]],"date-time":"2022-05-27T00:00:00Z","timestamp":1653609600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Children"],"abstract":"<jats:p>Aim: The following case report aims to show a novel orthopaedic appliance to reduce the side effects of the orthopaedic Class III treatment through the use of two acrylic splints combined with a PowerScope device. Materials and Methods: This case report describes the treatment of a 6-year-old patient with a skeletal Class III relationship with a maxillary deficiency and a severe hyperdivergency. The patient underwent a sagittal orthopaedic treatment with a PowerScope device for 12 months. The retention period lasted 4 months. Results: The response of the craniofacial complex to the active orthopaedic treatment of the Class III malocclusion with the PowerScope\u2122 device splints consisted of significant changes in maxillary growth and position. Both angular and linear sagittal measurements of the maxilla showed improvements during active treatment, respectively, of 0.6\u00b0 and 1.2 mm (SNA from 75.8\u00b0 to 76.4\u00b0; maxillary length from 38.8 mm to 40 mm). These effects allowed for a highly significant improvement in the maxillomandibular skeletal relationships. ANB improved by 1.6\u00b0 and Wits appraisal by 4 mm. Using this appliance in a hyperdivergent patient, we obtained a vertical control of the mandible with a SN\/Go-Gn stable value at 40\u00b0 and a significant improvement of the ANS-PNS\/GoGn angle from 30\u00b0 to 28\u00b0. Conclusion: The Class III orthopaedic treatment with the PowerScope\u2122 telescopic and NiTi spring device mounted on the upper and lower resin splints in a Class III correction offered good vertical control during the early orthopaedic treatment by improving the skeletal discrepancy and controlling the hyperdivergency, which is one of the most difficult factors to control in Class III malocclusions.<\/jats:p>","DOI":"10.3390\/children9060784","type":"journal-article","created":{"date-parts":[[2022,5,27]],"date-time":"2022-05-27T07:05:07Z","timestamp":1653635107000},"page":"784","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Intercepting of Class III Malocclusion with a Novel Mechanism Built on the Orthopaedic Appliance: A Case Report"],"prefix":"10.3390","volume":"9","author":[{"given":"Paolo","family":"Manzo","sequence":"first","affiliation":[{"name":"Department of Orthodontics, University of Ferrara, Via Livatino, 9, 42124 Ferrara, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8999-5264","authenticated-orcid":false,"given":"Maria Elena","family":"De Felice","sequence":"additional","affiliation":[{"name":"Department of Life, Health and Environmental Sciences, University of L\u2019Aquila, 67100 L\u2019Aquila, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sara","family":"Caruso","sequence":"additional","affiliation":[{"name":"Department of Life, Health and Environmental Sciences, University of L\u2019Aquila, 67100 L\u2019Aquila, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roberto","family":"Gatto","sequence":"additional","affiliation":[{"name":"Department of Life, Health and Environmental Sciences, University of L\u2019Aquila, 67100 L\u2019Aquila, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Silvia","family":"Caruso","sequence":"additional","affiliation":[{"name":"Department of Life, Health and Environmental Sciences, University of L\u2019Aquila, 67100 L\u2019Aquila, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"147","DOI":"10.3390\/medicina45020019","article-title":"The prevalence of malocclusion among 7\u201315-year-old Lithuanian schoolchildren","volume":"45","author":"Sidlauskas","year":"2009","journal-title":"Medicina"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"49","DOI":"10.1093\/ejo\/cjp050","article-title":"Prevalence of orthodontic treatment need in southern Italian schoolchildren","volume":"32","author":"Perillo","year":"2010","journal-title":"Eur. 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