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Article: Long-term evaluation of non-submerged ITI implants- Part 1: 8-year life table analysis of a prospective multi-center study with 2359 implants
Title | Long-term evaluation of non-submerged ITI implants- Part 1: 8-year life table analysis of a prospective multi-center study with 2359 implants |
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Authors | |
Keywords | Iti Implants Life Table Analysis Long-Term Study Non-Submerged Implants Osseointegration Success Rates Survival Rates |
Issue Date | 1997 |
Publisher | Wiley-Blackwell Publishing, Inc.. The Journal's web site is located at http://www.blackwellpublishing.com/journals/CLR |
Citation | Clinical Oral Implants Research, 1997, v. 8 n. 3, p. 161-172 How to Cite? |
Abstract | In the present multi-center study, non-submerged ITI implants were prospectively followed to evaluate their long-term prognosis in fully and partially edentulous patients. In a total of 1003 patients, 2359 implants were consecutively inserted. Following a healing period of 3-6 months, the successfully integrated implants were restored with 393 removable and 758 fixed restorations. Subsequently, all consecutive implants were documented annually up to 8 years. At each examination, the clinical status of all implants was evaluated according to predefined criteria of success. Therefore, the data base allowed the evaluation of 8-year cumulative survival and success rates for 2359 implants. In addition, cumulative success rates were calculated for implant subgroups divided per implant type, implant length, and implant location. Furthermore, the actual 5-year survival and success rates could be determined for 488 implants. During the healing period, 13 implants did not successfully integrate, whereas 2346 implants fulfilled the predefined criteria of success. This corresponds with an early failure rate of 0.55%. During follow-up, 19 implants were classified as failures due to several reasons. In addition, 17 implants (≈ 0.8%) demonstrated at the last annual examination a suppurative periimplant infection. Including 127 drop out implants (≈ 5.4% drop out rate) into the calculation, the 8-year cumulative survival and success rates resulted in 96.7% and 93.3%, respectively. The analysis of implant subgroups showed slightly more favorable cumulative success rates for screw type implants (> 95%) compared to hollow-cylinder implants (91.3%), and clearly better success rates for mandibular implants (≈ 95%) when compared to maxillary implants (≈ 87%). The actual 5-year survival and success rates of 488 implants with 98.2% and 97.3%, respectively, were slightly better than the estimated 5-year cumulative survival and success rates of 2359 implants indicating that the applied life table analysis is a reliable statistical method to evaluate the long-term prognosis of dental implants. It can be concluded that non-submerged ITI implants maintain success rates well above 90% in different clinical centers for observation periods up to 8 years. © Munksgaard 1997. |
Persistent Identifier | http://hdl.handle.net/10722/153994 |
ISSN | 2023 Impact Factor: 4.8 2023 SCImago Journal Rankings: 1.865 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Buser, D | en_US |
dc.contributor.author | MericskeStern, R | en_US |
dc.contributor.author | Bernard, JP | en_US |
dc.contributor.author | Behneke, A | en_US |
dc.contributor.author | Behneke, N | en_US |
dc.contributor.author | Hirt, HP | en_US |
dc.contributor.author | Belser, UC | en_US |
dc.contributor.author | Lang, NP | en_US |
dc.date.accessioned | 2012-08-08T08:22:43Z | - |
dc.date.available | 2012-08-08T08:22:43Z | - |
dc.date.issued | 1997 | en_US |
dc.identifier.citation | Clinical Oral Implants Research, 1997, v. 8 n. 3, p. 161-172 | en_US |
dc.identifier.issn | 0905-7161 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/153994 | - |
dc.description.abstract | In the present multi-center study, non-submerged ITI implants were prospectively followed to evaluate their long-term prognosis in fully and partially edentulous patients. In a total of 1003 patients, 2359 implants were consecutively inserted. Following a healing period of 3-6 months, the successfully integrated implants were restored with 393 removable and 758 fixed restorations. Subsequently, all consecutive implants were documented annually up to 8 years. At each examination, the clinical status of all implants was evaluated according to predefined criteria of success. Therefore, the data base allowed the evaluation of 8-year cumulative survival and success rates for 2359 implants. In addition, cumulative success rates were calculated for implant subgroups divided per implant type, implant length, and implant location. Furthermore, the actual 5-year survival and success rates could be determined for 488 implants. During the healing period, 13 implants did not successfully integrate, whereas 2346 implants fulfilled the predefined criteria of success. This corresponds with an early failure rate of 0.55%. During follow-up, 19 implants were classified as failures due to several reasons. In addition, 17 implants (≈ 0.8%) demonstrated at the last annual examination a suppurative periimplant infection. Including 127 drop out implants (≈ 5.4% drop out rate) into the calculation, the 8-year cumulative survival and success rates resulted in 96.7% and 93.3%, respectively. The analysis of implant subgroups showed slightly more favorable cumulative success rates for screw type implants (> 95%) compared to hollow-cylinder implants (91.3%), and clearly better success rates for mandibular implants (≈ 95%) when compared to maxillary implants (≈ 87%). The actual 5-year survival and success rates of 488 implants with 98.2% and 97.3%, respectively, were slightly better than the estimated 5-year cumulative survival and success rates of 2359 implants indicating that the applied life table analysis is a reliable statistical method to evaluate the long-term prognosis of dental implants. It can be concluded that non-submerged ITI implants maintain success rates well above 90% in different clinical centers for observation periods up to 8 years. © Munksgaard 1997. | en_US |
dc.language | eng | en_US |
dc.publisher | Wiley-Blackwell Publishing, Inc.. The Journal's web site is located at http://www.blackwellpublishing.com/journals/CLR | en_US |
dc.relation.ispartof | Clinical Oral Implants Research | en_US |
dc.subject | Iti Implants | en_US |
dc.subject | Life Table Analysis | en_US |
dc.subject | Long-Term Study | en_US |
dc.subject | Non-Submerged Implants | en_US |
dc.subject | Osseointegration | en_US |
dc.subject | Success Rates | en_US |
dc.subject | Survival Rates | en_US |
dc.title | Long-term evaluation of non-submerged ITI implants- Part 1: 8-year life table analysis of a prospective multi-center study with 2359 implants | en_US |
dc.type | Article | en_US |
dc.identifier.email | Lang, NP:nplang@hkucc.hku.hk | en_US |
dc.identifier.authority | Lang, NP=rp00031 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.scopus | eid_2-s2.0-0031152016 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0031152016&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 8 | en_US |
dc.identifier.issue | 3 | en_US |
dc.identifier.spage | 161 | en_US |
dc.identifier.epage | 172 | en_US |
dc.identifier.isi | WOS:A1997XE16000002 | - |
dc.publisher.place | United States | en_US |
dc.identifier.scopusauthorid | Buser, D=7006034952 | en_US |
dc.identifier.scopusauthorid | MericskeStern, R=7005421604 | en_US |
dc.identifier.scopusauthorid | Bernard, JP=7403165248 | en_US |
dc.identifier.scopusauthorid | Behneke, A=6603400753 | en_US |
dc.identifier.scopusauthorid | Behneke, N=8334869000 | en_US |
dc.identifier.scopusauthorid | Hirt, HP=7004335342 | en_US |
dc.identifier.scopusauthorid | Belser, UC=35614703700 | en_US |
dc.identifier.scopusauthorid | Lang, NP=7201577367 | en_US |
dc.identifier.issnl | 0905-7161 | - |