Bruno Ramos Chrcanovic1, Jenö Kisch2, Tomas Albrektsson1,3, Ann Wennerberg4. 1. Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden. 2. Clinic for Prosthodontics, Centre of Dental Specialist Care, Malmö, Sweden. 3. Department of Biomaterials, Göteborg University, Göteborg, Sweden. 4. Department of Prosthodontics, Sahlgrenska Academy, Göteborg University, Göteborg, Sweden.
Abstract
BACKGROUND: Very long-term follow-up of oral implants is seldom reported in the literature. PURPOSE: To assess oral implant failure rates and marginal bone loss (MBL) of patients followed up for a minimum of 20 years. MATERIALS AND METHODS: Implants placed in patients followed up for 20+ years were included. Descriptive statistics, survival analyses, generalized estimating equations were performed. Three-hundred implants were randomly selected for MBL. RESULTS: 1,045 implants (227 patients) were included. Implant location, irradiation, and bruxism affected the implant survival rate. Thirty-five percent of the failures occurred within the first year after implantation, and another 26.8% in the second/third year. There was a cumulative survival rate of 87.8% after 36 years of follow-up. In the last radiological follow up, 35 implants (11.7%) had bone gain, and 35 implants (11.7%) presented at least 3 mm of MBL. Twenty-six out of 86 failed implants with available radiograms presented severe MBL in the last radiological register before implant failure. CONCLUSIONS: Most of the implant failures occurred at the first few years after implantation, regardless of a very long follow up. MBL can be insignificant in long-term observations, but it may, nevertheless, be the cause of secondary failure of oral implants in some cases.
BACKGROUND: Very long-term follow-up of oral implants is seldom reported in the literature. PURPOSE: To assess oral implant failure rates and marginal bone loss (MBL) of patients followed up for a minimum of 20 years. MATERIALS AND METHODS: Implants placed in patients followed up for 20+ years were included. Descriptive statistics, survival analyses, generalized estimating equations were performed. Three-hundred implants were randomly selected for MBL. RESULTS: 1,045 implants (227 patients) were included. Implant location, irradiation, and bruxism affected the implant survival rate. Thirty-five percent of the failures occurred within the first year after implantation, and another 26.8% in the second/third year. There was a cumulative survival rate of 87.8% after 36 years of follow-up. In the last radiological follow up, 35 implants (11.7%) had bone gain, and 35 implants (11.7%) presented at least 3 mm of MBL. Twenty-six out of 86 failed implants with available radiograms presented severe MBL in the last radiological register before implant failure. CONCLUSIONS: Most of the implant failures occurred at the first few years after implantation, regardless of a very long follow up. MBL can be insignificant in long-term observations, but it may, nevertheless, be the cause of secondary failure of oral implants in some cases.
Authors: Aasem M Alhenaki; Faraz K Alrawi; Ahmed Mohamed; Abdullah Alshahrani; Mohammed Alrabiah; Sameer A Mokeem; Eman M AlHamdan; Paras Ahmad; Fahim Vohra; Tariq Abduljabbar Journal: Odontology Date: 2021-07-09 Impact factor: 2.634
Authors: Nicholas G Fischer; Xi Chen; Kristina Astleford-Hopper; Jiahe He; Alex F Mullikin; Kim C Mansky; Conrado Aparicio Journal: Mater Sci Eng C Mater Biol Appl Date: 2021-04-16
Authors: Luis Amengual-Peñafiel; Manuel Brañes-Aroca; Francisco Marchesani-Carrasco; María Costanza Jara-Sepúlveda; Leopoldo Parada-Pozas; Ricardo Cartes-Velásquez Journal: J Clin Med Date: 2019-01-25 Impact factor: 4.241
Authors: Francesco Guido Mangano; Sina Ghertasi Oskouei; Ana Paz; Natale Mangano; Carlo Mangano Journal: J Dent Res Dent Clin Dent Prospects Date: 2018-09-18