{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,24]],"date-time":"2026-01-24T09:16:30Z","timestamp":1769246190250,"version":"3.49.0"},"reference-count":34,"publisher":"Georg Thieme Verlag KG","issue":"01","license":[{"start":{"date-parts":[[2021,9,29]],"date-time":"2021-09-29T00:00:00Z","timestamp":1632873600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Eur J Dent"],"published-print":{"date-parts":[[2022,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>\n          Objective\u2003This study aimed to investigate the impact of mechanical complications on outcome measures for implant dentistry.<\/jats:p><jats:p>\n          Materials and Methods\u2003This case\u2013control study included 282 patients with mechanical complications occurring in fixed prosthetic rehabilitation supported by immediate function implants with external connection (cases) and 282 individuals without mechanical complications (control). Pairing was performed for sex, age (range = 3 years), and follow-up months (range = 11 months). The primary outcome measure was implant survival, while the secondary outcome measures were marginal bone loss and biological complication parameters (peri-implant pathology, soft tissue inflammation, fistula formation, and abscess formation).<\/jats:p><jats:p>\n          Statistical Analysis\u2003Cumulative implant survival was estimated by using life tables. Descriptive statistics with 95% confidence intervals (CI) and inferential statistics (Chi-square test) were performed to evaluate differences between cases and controls. The significance level was set at 5%.<\/jats:p><jats:p>\n          Results\u2003The average follow-up duration was 8.5 years. Mechanical complications included prosthetic fracture (n = 159), abutment loosening (n = 89), prosthetic screw loosening (n = 20), milled abutment (n = 12), milled prosthetic screw (n = 1), and decemented crown (n = 1). Implant failure occurred in one patient from the control group, with survival rates of 100 and 99.6% for cases and controls, respectively (p = 0.317). The average marginal bone loss was 1.72 (95% confidence interval [CI]: 1.60\u20131.84) for cases and 1.55 (95% CI: 1.45\u20131.65) for controls (p = 0.068). Biological complications were observed in 90 patients, with significant differences between cases (n = 54) and controls (n = 36; p = 0.038).<\/jats:p><jats:p>\n          Conclusion\u2003Mechanical complications did not significantly influence survival or marginal bone loss; nevertheless, there is a need for studies with longer follow-up duration. Mechanical complications also significantly influence the incidence of biological complications.<\/jats:p>","DOI":"10.1055\/s-0041-1732802","type":"journal-article","created":{"date-parts":[[2021,9,29]],"date-time":"2021-09-29T23:56:06Z","timestamp":1632959766000},"page":"179-187","source":"Crossref","is-referenced-by-count":6,"title":["Impact of Mechanical Complications on Success of Dental Implant Treatments: A Case\u2013Control Study"],"prefix":"10.1055","volume":"16","author":[{"given":"Patr\u00edcia W.","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Unidade de Epidemiologia, Instituto de Medicina Preventiva e Sa\u00fade P\u00fablica, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, Lisboa, Portugal"}]},{"given":"Paulo J.","family":"Nogueira","sequence":"additional","affiliation":[{"name":"Unidade de Epidemiologia, Instituto de Medicina Preventiva e Sa\u00fade P\u00fablica, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, Lisboa, Portugal"}]},{"given":"Miguel A. de Ara\u00fajo","family":"Nobre","sequence":"additional","affiliation":[{"name":"Unidade de Epidemiologia, Instituto de Medicina Preventiva e Sa\u00fade P\u00fablica, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, Lisboa, Portugal"},{"name":"Research, Development and Education Department, Mal\u00f3 Clinic, Avenida dos Combatentes, Lisboa, Portugal"},{"name":"Cl\u00ednica Universit\u00e1ria de Estomatologia, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, Lisboa, Portugal"}]},{"given":"Carlos Moura","family":"Guedes","sequence":"additional","affiliation":[{"name":"Prosthodontics Department, Mal\u00f3 Clinic, Avenida dos Combatentes, Lisboa, Portugal"}]},{"given":"Francisco","family":"Salvado","sequence":"additional","affiliation":[{"name":"Cl\u00ednica Universit\u00e1ria de Estomatologia, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, Lisboa, Portugal"},{"name":"Centro de Investiga\u00e7\u00e3o Integrada Egas Moniz, Campus Universit\u00e1rio, Quinta da Granja, Caparica"}]}],"member":"194","published-online":{"date-parts":[[2021,9,29]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"498305","DOI":"10.1155\/2013\/498305","article-title":"The impact of edentulism on oral and general health","volume":"2013","author":"E Emami","year":"2013","journal-title":"Int J Dent"},{"issue":"03","key":"ref3","doi-asserted-by":"crossref","first-page":"138","DOI":"10.1111\/j.1708-8208.2000.tb00004.x","article-title":"Immediate function of Br\u00e5nemark implants in the esthetic zone: a retrospective clinical study with 6 months to 4 years of follow-up","volume":"2","author":"P Mal\u00f3","year":"2000","journal-title":"Clin Implant Dent Relat Res"},{"issue":"05","key":"ref4","doi-asserted-by":"crossref","first-page":"515","DOI":"10.1034\/j.1600-0501.2003.00950.x","article-title":"Critical review of immediate 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