{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T13:30:57Z","timestamp":1789392657023,"version":"build-2803163510"},"reference-count":29,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2006,5,3]],"date-time":"2006-05-03T00:00:00Z","timestamp":1146614400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Periodontal Research"],"published-print":{"date-parts":[[2006,6]]},"abstract":"<jats:p><jats:bold>Background and Objective:\u2002<\/jats:bold> Commercially available enamel proteins, such as Emdogain\u00ae, are clinically used for periodontal regeneration. However, the real mechanisms behind the bioactivities of enamel proteins is still unclear, as enamel proteins have multicomponents. The purpose of this <jats:italic>in vivo<\/jats:italic> study was to identify the cementum regeneration\u2010promoting factor in enamel proteins that is clinically used for periodontal regeneration to induce cementum\u2010promotive and osteopromotive activities.<\/jats:p><jats:p><jats:bold>Material and Methods:\u2002<\/jats:bold> Cementum regeneration, which is an important part of periodontal regeneration, was examined in experimental cavities prepared on a buccal dehiscence model of dogs. The purification of enamel protein with cementum regeneration activity was carried out by gel filtration and ion exchange chromatographies of newly formed secretory enamel.<\/jats:p><jats:p><jats:bold>Results:\u2002<\/jats:bold> Cementum regeneration activity was found in the aggregate comprising 13\u201317\u2010kDa sheath proteins along with a small amount of amelogenins, found in the newly formed secretory enamel. In these proteins, cementum regeneration activity was detected upon application of the 17\u2010kDa sheath protein, but not by other lower molecular\u2010weight sheath proteins and amelogenins. However, the purified 17\u2010kDa sheath protein induced cementum regeneration activity only in a small area, although the regenerated cementum was thick. The activity of the 17\u2010kDa sheath protein was believed not to have been a result of contamination by growth factors such as transforming growth factor\u2010\u03b21 (TGF\u2010\u03b21) found in the enamel protein, as the application of TGF\u2010\u03b21 induced weak cementum regeneration activity.<\/jats:p><jats:p><jats:bold>Conclusion:\u2002<\/jats:bold> It is concluded that the 17\u2010kDa sheath protein itself exhibits cementum regeneration activity, although other factors may be needed to demonstrate its full ability.<\/jats:p>","DOI":"10.1111\/j.1600-0765.2005.00859.x","type":"journal-article","created":{"date-parts":[[2006,5,4]],"date-time":"2006-05-04T01:26:52Z","timestamp":1146706012000},"page":"193-199","source":"Crossref","is-referenced-by-count":19,"title":["The 17\u2010kDa sheath protein in enamel proteins induces cementum regeneration in experimental cavities created in a buccal dehiscence model of 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