Christer Slotte1,2, Arne Grønningsaeter3, Anne-Marie Halmøy4, Lars-Olof Öhrnell5, Arne Mordenfeld6, Sten Isaksson7, Lars-Åke Johansson8. 1. Department of Periodontology, The Institute for Postgraduate Dental Education, Jönköping, Sweden. 2. Department of Biomaterials, Institute for Clinical Sciences, Göteborg University, Göteborg, Sweden. 3. Oral Surgery, Faculty of Dentistry, University of Bergen, Bergen, Norway. 4. Prosthodontics, Faculty of Dentistry, University of Bergen, Bergen, Norway. 5. Department of Oral & Maxillofacial Surgery, Borås County Hospital, Borås, Sweden. 6. Department of Oral & Maxillofacial Surgery, Gävle County Hospital, Gävle, Sweden. 7. Department of Oral & Maxillofacial Surgery, Halmstad County Hospital, Halmstad, Sweden. 8. Department of Prosthodontics, Halmstad County Hospital, Halmstad, Sweden.
Abstract
BACKGROUND: There is lack of evidence on long-term success of short dental implants in reduced alveolar bone. PURPOSE: In this prospective 5-year study, survival and marginal bone loss of 4-mm implants, which supported fixed dental prostheses (FDPs) in severely resorbed posterior mandibles, were evaluated. MATERIAL AND METHODS: In 28 patients, evaluation of 86 osseointegrated 4-mm-long implants, which supported a 3- or a 4-unit FDP by crown splinting without the use of pontics or cantilevers, was performed over a 5-year period. RESULTS: Three subjects dropped out for non-study reasons: one subject had her three implants removed after 1 year and two subjects died (six implants). Five implants in three subjects were lost between 3 and 5 years. Twenty-four subjects and 71 implants were active at the 5-year follow-up (92.2% survival). After 1 year, significant (p < .001) mean (standard error of the mean [SEM]) 0.44-mm (0.05) marginal bone loss occurred. At 2, 3, and 5 years, mean (SEM) bone loss of 0.57 mm (0.06), 0.55 mm (0.07), and 0.53 mm (0.08) occurred, respectively (no significant change after 1 year). At 5 years, average plaque levels were 13.3%; 69% of the implants were plaque free. On average, mucosal bleeding occurred at 8.1% of the implants. During 5 years, two subjects experienced uncomplicated bridge loosening. No other complications occurred during the study. CONCLUSION: Four-millimeter implants can support FDPs in severely resorbed posterior mandibles for 5 years with healthy peri-implant conditions.
BACKGROUND: There is lack of evidence on long-term success of short dental implants in reduced alveolar bone. PURPOSE: In this prospective 5-year study, survival and marginal bone loss of 4-mm implants, which supported fixed dental prostheses (FDPs) in severely resorbed posterior mandibles, were evaluated. MATERIAL AND METHODS: In 28 patients, evaluation of 86 osseointegrated 4-mm-long implants, which supported a 3- or a 4-unit FDP by crown splinting without the use of pontics or cantilevers, was performed over a 5-year period. RESULTS: Three subjects dropped out for non-study reasons: one subject had her three implants removed after 1 year and two subjects died (six implants). Five implants in three subjects were lost between 3 and 5 years. Twenty-four subjects and 71 implants were active at the 5-year follow-up (92.2% survival). After 1 year, significant (p < .001) mean (standard error of the mean [SEM]) 0.44-mm (0.05) marginal bone loss occurred. At 2, 3, and 5 years, mean (SEM) bone loss of 0.57 mm (0.06), 0.55 mm (0.07), and 0.53 mm (0.08) occurred, respectively (no significant change after 1 year). At 5 years, average plaque levels were 13.3%; 69% of the implants were plaque free. On average, mucosal bleeding occurred at 8.1% of the implants. During 5 years, two subjects experienced uncomplicated bridge loosening. No other complications occurred during the study. CONCLUSION: Four-millimeter implants can support FDPs in severely resorbed posterior mandibles for 5 years with healthy peri-implant conditions.
Authors: Fabio Rossi; Lorenzo Tuci; Lorenzo Ferraioli; Emanuele Ricci; Andreea Suerica; Daniele Botticelli; Gerardo Pellegrino; Pietro Felice Journal: Int J Environ Res Public Health Date: 2021-04-06 Impact factor: 3.390
Authors: Lana Zupancic Cepic; Martin Frank; Andreas Reisinger; Dieter Pahr; Werner Zechner; Andreas Schedle Journal: Int J Implant Dent Date: 2022-02-11
Authors: Vittorio Moraschini; Carlos Fernando de Almeida Barros Mourão; Pietro Montemezzi; Ingrid Chaves Cavalcante Kischinhevsky; Daniel Costa Ferreira de Almeida; Kayvon Javid; Jamil Awad Shibli; José Mauro Granjeiro; Monica Diuana Calasans-Maia Journal: Healthcare (Basel) Date: 2021-03-12