{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T17:37:28Z","timestamp":1790876248625,"version":"4.1.0"},"reference-count":44,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2023,12,18]],"date-time":"2023-12-18T00:00:00Z","timestamp":1702857600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82271015"],"award-info":[{"award-number":["82271015"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Oral Implants Res"],"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>To identify the risk indicators and develop and validate a nomogram prediction model of implant apical non\u2010coverage by comprehensively analyzing clinical and radiographic factors in bone\u2010added transcrestal sinus floor elevation (TSFE).<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and Methods<\/jats:title><jats:p>A total of 260 implants in 195 patients receiving bone\u2010added TSFE were included in the study. The population was divided into a development (180 implants) and a validation (80 implants) cohort. According to 6 months post\u2010surgery radiographic images, implants were categorized as \u201capical non\u2010coverage\u201d or \u201capical covered.\u201d The association of risk factors including clinical and radiographic parameters with implant apical non\u2010coverage was assessed using regression analyses. A nomogram prediction model was developed, and its validation and discriminatory ability were analyzed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The nomogram predicting bone\u2010added TSFE's simultaneously placed implant's apex non\u2010coverage after 6 months. This study revealed that sinus angle, endo\u2010sinus bone gain, implant protrusion length, graft contact walls, and distal angle were predictors of implant apical non\u2010coverage. The generated nomogram showed a strong predictive capability (area under the curve [AUC]\u2009=\u20090.845), confirmed by internal validation using 10\u2010fold cross\u2010validation (Median AUC of 0.870) and temporal validation (AUC\u2009=\u20090.854). The calibration curve and decision curve analysis demonstrated good performance and high net benefit of the nomogram, respectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The clinical implementation of the present nomogram is suitable for predicting the apex non\u2010coverage of implants placed simultaneously with bone\u2010added TSFE after 6 months.<\/jats:p><\/jats:sec>","DOI":"10.1111\/clr.14225","type":"journal-article","created":{"date-parts":[[2023,12,18]],"date-time":"2023-12-18T15:06:57Z","timestamp":1702912017000},"page":"282-293","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["A nomogram prediction of implant apical non\u2010coverage on bone\u2010added transcrestal sinus floor elevation: A retrospective cohort study"],"prefix":"10.1111","volume":"35","author":[{"given":"Jiayu","family":"Gao","sequence":"first","affiliation":[{"name":"State Key Laboratory of Oral 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