{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T11:35:41Z","timestamp":1791891341135,"version":"4.3.4"},"reference-count":18,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2023,11,29]],"date-time":"2023-11-29T00:00:00Z","timestamp":1701216000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2023,11,29]],"date-time":"2023-11-29T00:00:00Z","timestamp":1701216000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Key R&D Program of Shaanxi Province - International Cooperation Key Project","award":["2021KWZ-26"],"award-info":[{"award-number":["2021KWZ-26"]}]},{"name":"Military Stomatology National Key Laboratory Independent Project","award":["2020ZA01"],"award-info":[{"award-number":["2020ZA01"]}]},{"name":"National Clinical Research Center for Oral Diseases Special Project","award":["LCC202204"],"award-info":[{"award-number":["LCC202204"]}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Oral Health"],"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Background<\/jats:title>\n                <jats:p>Premature loss of primary molars can be treated with a band loop space maintainer (SM). However, fabricating a conventional band loop SM requires multiple clinical and laboratory procedures, which can potentially affect the accuracy of the SM. Moreover, the conventional SM is unable to fully restore masticatory function and maintain the vertical dimension of the edentulous space. In this current study, a fully digital workflow to fabricate a semi-rigid bridge SM made from polyetheretherketone (PEEK) has been described and evaluated for its clinical effectiveness.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>A total of 15 children (eight males and seven females) between the ages of 4\u20138 years, who experienced the premature loss of a single primary molar, were included in this study. Digital impressions were taken using the CEREC CAD\/CAM chair system and imported into CAD software to design the semi-rigid bridge SM, which was fabricated using PEEK block as the maintainer material. The digital SM was tried-in and bonded to the abutment with resin cement. The edentulous space was measured immediately after bonding (T0) and 1 month (T1), 3 months (T2), and 6 months (T3) after treatment. The periodontal condition and mobility of the SM and abutment were also examined.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The use of digital impressions resulted in a decreased occurrence of the pharyngeal reflex. The digital semi-rigid bridge SM, fabricated with PEEK, was both convenient and aesthetically pleasing, and successfully restored the anatomy and masticatory function of the missing primary molar. None of the 15 semi-rigid bridge SMs or abutments became loose or fell off during the study, and only one child presented with gingivitis. Furthermore, the difference in the edentulous space at T0, T1, T2, and T3 was not statistically significant (all P\u2009&gt;\u20090.05).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>The digital semi-rigid bridge SM fabricated with PEEK was clinically effective in maintaining the missing space and had advantages over the traditional band\/crown loop SM.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12903-023-03570-2","type":"journal-article","created":{"date-parts":[[2023,11,29]],"date-time":"2023-11-29T11:02:26Z","timestamp":1701255746000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Clinical application of a digital semi-rigid bridge space maintainer fabricated from polyetheretherketone for premature loss of primary molars"],"prefix":"10.1186","volume":"23","author":[{"given":"Qi","family":"Wang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhenzhen","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sheng","family":"Zhong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiajia","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ying","family":"Hu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziling","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Caidi","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shizhu","family":"Bai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li\u2019an","family":"Wu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,11,29]]},"reference":[{"key":"3570_CR1","doi-asserted-by":"publisher","DOI":"10.1016\/j.prosdent.2022.02.026","author":"LP Rodrigues","year":"2022","unstructured":"Rodrigues LP, Dourado PHN, de Ara\u00fajo CAR, No-Cortes J, Pinhata-Baptista OH. Digital workflow to produce esthetic space maintainers for growing patients. J Prosthet Dent. 2022. https:\/\/doi.org\/10.1016\/j.prosdent.2022.02.026.","journal-title":"J Prosthet Dent"},{"issue":"5","key":"3570_CR2","doi-asserted-by":"publisher","first-page":"764","DOI":"10.1111\/ipd.12955","volume":"32","author":"M Tokuc","year":"2022","unstructured":"Tokuc M, Yilmaz H. Comparison of fit accuracy between conventional and CAD\/CAM-fabricated band-loop space maintainers. Int J Paediatr Dent. 2022;32(5):764\u201371.","journal-title":"Int J Paediatr Dent"},{"key":"3570_CR3","doi-asserted-by":"publisher","DOI":"10.1111\/jerd.12939","author":"JH Lee","year":"2022","unstructured":"Lee JH. Fully digital workflow for the fabrication of a tooth-colored space maintainer for a young patient. 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All patients and their parents read, understood, and signed the informed consent form. The study was performed in accordance with the Declaration of Helsinki. All methods were carried out in accordance with relevant guidelines and regulations.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}}],"article-number":"944"}}