{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T06:12:13Z","timestamp":1790662333608,"version":"4.1.0"},"reference-count":39,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2024,3,1]],"date-time":"2024-03-01T00:00:00Z","timestamp":1709251200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthod Craniofacial Res"],"published-print":{"date-parts":[[2024,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>This prospective clinical study aimed to evaluate the immediate impact of Twin\u2010block appliance insertion on the sleep of adolescents using a wearable device.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>A total of 24 girls, aged 11\u201013\u2009years, with Class II division 1 molar relationship, skeletal class 2 malocclusion (ANB \u22655) and overjet measuring \u22655\u2009mm were selected. Exclusion criteria included a history of previous orthodontic treatment, systemic disease, irregular sleep pattern, obstructive sleep apnea, medical history of breathing disorders, or concurrent use of medications. Participants wore a wearable device to measure sleep parameters, including deep sleep, light sleep, minutes awake during sleep, wake\u2010up times, bedtimes and total sleep times. The participants wore the device for 10\u2009days prior to Twin\u2010block insertion and sleep data were collected for another 10\u2009days after insertion.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Following the insertion of the Twin\u2010block appliance, there was a highly statistically significant shift in bedtime and wake\u2010up time to later hours (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001). All participants experienced a highly significant delay in bedtime compared to the recommended 10\u2009pm time (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001). Additionally, there was a significant increase in the duration of light sleep (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05). However, the effect on deep sleep, minutes awake during sleep and sleep duration was not statistically significant. None of the sleep parameters tested showed statistically significant changes between the first 5\u2009days after Twin\u2010block insertion with the subsequent 5\u2009days.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The immediate insertion of the Twin\u2010block appliance disrupts sleep onset, wake\u2010up time and light sleep during the specified period of 10\u2009days.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ocr.12773","type":"journal-article","created":{"date-parts":[[2024,3,1]],"date-time":"2024-03-01T11:23:54Z","timestamp":1709292234000},"page":"598-605","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Assessing the immediate impact of Twin\u2010block appliance insertion on adolescents' sleep using a wearable 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