{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,24]],"date-time":"2026-04-24T09:12:32Z","timestamp":1777021952836,"version":"3.51.4"},"reference-count":34,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2020,5,2]],"date-time":"2020-05-02T00:00:00Z","timestamp":1588377600000},"content-version":"vor","delay-in-days":122,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61571311"],"award-info":[{"award-number":["61571311"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BioMed Research International"],"published-print":{"date-parts":[[2020,1]]},"abstract":"<jats:p>Low\u2010intensity pulsed ultrasound (LIPUS) is an emerging physical therapy for the treatment of early temporomandibular joint injury and has a good effect on promoting cartilage and subchondral bone tissue repair. However, the best LIPUS intensity and treatment duration remain unclear. This study is aimed at observing the preventive and therapeutic effects of different modes of LIPUS and at identifying the optimal LIPUS treatment regimen for temporomandibular joint injury. In the present study, rat models of temporomandibular joint injury were established using a chronic sleep deprivation (CSD) method, and the effect of LIPUS as intensities of 30, 45, and 60\u2009mW\/cm<jats:sup>2<\/jats:sup> was observed at 7, 14, and 21 days. After CSD, the condylar cartilage of the rats demonstrated variable degrees of surface roughening, collagen fiber disarrangement or even partial exfoliation, decreased proteoglycan synthesis and cartilage thickness, decreased chondrocyte proliferation, decreased type 2 collagen (COL\u20102) expression, and increased matrix metalloproteinase\u2010 (MMP\u2010) 3 expression at all three time points. When the rats with CSD received different intensities of LIPUS treatment, the pathological changes were alleviated to various extents. The groups receiving 45\u2009mW\/cm<jats:sup>2<\/jats:sup> LIPUS showed the most significant relief of cartilage damage, and this significant effect was observed on days 14 and 21. These results demonstrated that LIPUS can effectively inhibit CSD\u2010induced condylar cartilage damage in rats, and LIPUS treatment at an intensity of 45\u2009mW\/cm<jats:sup>2<\/jats:sup> for at least 2 weeks is the optimal regimen for temporomandibular joint injury.<\/jats:p>","DOI":"10.1155\/2020\/5468173","type":"journal-article","created":{"date-parts":[[2020,5,2]],"date-time":"2020-05-02T23:30:28Z","timestamp":1588462228000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["The Optimal Regimen for the Treatment of Temporomandibular Joint Injury Using Low\u2010Intensity Pulsed Ultrasound in Rats with Chronic Sleep Deprivation"],"prefix":"10.1155","volume":"2020","author":[{"given":"Chao","family":"Liang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tao","family":"Yang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gaoyi","family":"Wu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9301-6073","authenticated-orcid":false,"given":"Jun","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0046-3681","authenticated-orcid":false,"given":"Wei","family":"Geng","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,5,2]]},"reference":[{"key":"e_1_2_9_1_2","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.h1154"},{"key":"e_1_2_9_2_2","doi-asserted-by":"publisher","DOI":"10.11607\/jomi.te20"},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.1177\/154405910808700406"},{"key":"e_1_2_9_4_2","first-page":"378","article-title":"Diagnosis and treatment of temporomandibular disorders","volume":"91","author":"Gauer R. 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