{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,20]],"date-time":"2025-10-20T00:30:04Z","timestamp":1760920204510,"version":"build-2065373602"},"reference-count":29,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2009,6,1]],"date-time":"2009-06-01T00:00:00Z","timestamp":1243814400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[2009,6]]},"abstract":"<jats:p><jats:bold>Background:<\/jats:bold> The objective of this study was to evaluate the influence of early exposure of the cover screw on crestal bone loss around implants.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> The study population consisted of 19 patients who were treated with dental implants placed using a two\u2010stage surgical protocol and had early exposed and non\u2010exposed implants (20 early exposed and 20 non\u2010exposed implants). The crestal bone loss at exposed and non\u2010exposed implants in each patient was evaluated with a periapical radiograph taken at the first surgery and at suprastructure insertion using a computerized image\u2010analysis system. The bone loss was compared using the Wilcoxon signed\u2010rank test.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> The mean crestal bone loss at exposed implants was 0.40 \u00b1 0.53 mm, and it was 0.18 \u00b1 0.26 mm at non\u2010exposed implants. The Wilcoxon signed\u2010rank test revealed a statistically significant difference in crestal bone loss between exposed and non\u2010exposed implants in the same patient (<jats:italic>P<\/jats:italic> = 0.02).<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold> The early exposure of the cover screw that results in breakdown of the mucosal seal seems to accelerate early peri\u2010implant crestal bone loss. Periodic follow\u2010up after the first surgery may be critical for minimizing the influence of early exposure.<\/jats:p>","DOI":"10.1902\/jop.2009.080580","type":"journal-article","created":{"date-parts":[[2009,6,2]],"date-time":"2009-06-02T08:48:52Z","timestamp":1243932532000},"page":"933-939","source":"Crossref","is-referenced-by-count":14,"title":["Influence of Early Cover Screw Exposure on Crestal Bone Loss Around Implants: Intraindividual Comparison of Bone Level at Exposed and Non\u2010Exposed Implants"],"prefix":"10.1002","volume":"80","author":[{"given":"Tae\u2010Hyung","family":"Kim","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dong\u2010Won","family":"Lee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chong\u2010Kwan","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kwang\u2010Ho","family":"Park","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ik\u2010Sang","family":"Moon","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2009,6]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/0022-3913(84)90459-1"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1902\/jop.1985.56.10.579"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-051X.1996.tb00520.x"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.3109\/02844316909036699"},{"key":"e_1_2_7_6_1","first-page":"223","volume-title":"Surgical 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