Prospective clinical study to evaluate the success and survival of two-piece zirconia implants: a single-center study. 12-month results
Abstract Purpose To evaluate the survival and success rates of a novel two-piece zirconia implant system restored with screw-retained glass–ceramic crowns over 12 months, including assessment of bone levels, soft tissue parameters, and patient-reported outcome measures. Methods Twenty-four patients...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-04-01
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| Series: | International Journal of Implant Dentistry |
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| Online Access: | https://doi.org/10.1186/s40729-025-00621-x |
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| author | Marie-Elise Jennes Insa Herklotz Margarita Bessonova Jeremias Hey Florian Beuer |
| author_facet | Marie-Elise Jennes Insa Herklotz Margarita Bessonova Jeremias Hey Florian Beuer |
| author_sort | Marie-Elise Jennes |
| collection | DOAJ |
| description | Abstract Purpose To evaluate the survival and success rates of a novel two-piece zirconia implant system restored with screw-retained glass–ceramic crowns over 12 months, including assessment of bone levels, soft tissue parameters, and patient-reported outcome measures. Methods Twenty-four patients received single two-piece zirconia implants (CERALOG® Hexalobe) in healed sites. After a 6-month healing period, implants received provisional screw-retained crowns on PEKK temporary abutments, followed by definitive lithium disilicate crowns (IPS e.max Press) on PEKK abutments. Clinical and radiographic examinations were performed at implant placement, re-entry, definitive loading, and 12-month follow-up, along with patient-reported outcome measures. Results The implant survival rate at 12 months was 60.9%. Nine implants were lost: two due to lack of osseointegration at re-entry, four due to mobility after loading, and three due to fractures in the coronal third after loading. Surviving implants showed stable soft tissue parameters with mean probing pocket depths of 2.7 ± 0.7 mm at 12 months. The mean distance from implant shoulder to first bone contact decreased from 1.9 ± 0.6 mm at loading to 1.4 ± 0.6 mm at 12 months. Patients with surviving implants reported high satisfaction scores (4.8 ± 0.4) for function and aesthetics. Conclusions The two-piece zirconia implant system with screw-retained restorations showed unsatisfactory survival rates. The combination of ceramic implants with screw-retained prosthetic restorations may have contributed to the higher failure rates observed. As a pilot study with a relatively small sample size, these findings should be confirmed by larger multicenter studies to validate these preliminary results. |
| format | Article |
| id | doaj-art-bf48332ad0f644cda629590de31d439b |
| institution | DOAJ |
| issn | 2198-4034 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | International Journal of Implant Dentistry |
| spelling | doaj-art-bf48332ad0f644cda629590de31d439b2025-08-20T03:13:57ZengSpringerOpenInternational Journal of Implant Dentistry2198-40342025-04-0111111110.1186/s40729-025-00621-xProspective clinical study to evaluate the success and survival of two-piece zirconia implants: a single-center study. 12-month resultsMarie-Elise Jennes0Insa Herklotz1Margarita Bessonova2Jeremias Hey3Florian Beuer4Department of Prosthodontics, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Geriatric Dentistry and Craniomandibular DisordersPrivate Dental PractisePrivate Dental PractiseDepartment of Prosthetic Dentistry, University School of Dental Medicine, Martin Luther University Halle-WittenbergDepartment of Prosthodontics, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Geriatric Dentistry and Craniomandibular DisordersAbstract Purpose To evaluate the survival and success rates of a novel two-piece zirconia implant system restored with screw-retained glass–ceramic crowns over 12 months, including assessment of bone levels, soft tissue parameters, and patient-reported outcome measures. Methods Twenty-four patients received single two-piece zirconia implants (CERALOG® Hexalobe) in healed sites. After a 6-month healing period, implants received provisional screw-retained crowns on PEKK temporary abutments, followed by definitive lithium disilicate crowns (IPS e.max Press) on PEKK abutments. Clinical and radiographic examinations were performed at implant placement, re-entry, definitive loading, and 12-month follow-up, along with patient-reported outcome measures. Results The implant survival rate at 12 months was 60.9%. Nine implants were lost: two due to lack of osseointegration at re-entry, four due to mobility after loading, and three due to fractures in the coronal third after loading. Surviving implants showed stable soft tissue parameters with mean probing pocket depths of 2.7 ± 0.7 mm at 12 months. The mean distance from implant shoulder to first bone contact decreased from 1.9 ± 0.6 mm at loading to 1.4 ± 0.6 mm at 12 months. Patients with surviving implants reported high satisfaction scores (4.8 ± 0.4) for function and aesthetics. Conclusions The two-piece zirconia implant system with screw-retained restorations showed unsatisfactory survival rates. The combination of ceramic implants with screw-retained prosthetic restorations may have contributed to the higher failure rates observed. As a pilot study with a relatively small sample size, these findings should be confirmed by larger multicenter studies to validate these preliminary results.https://doi.org/10.1186/s40729-025-00621-xCeramic implantsZirconiaTwo-piece implantsImplant fractureScrew-retained restorationDental implants |
| spellingShingle | Marie-Elise Jennes Insa Herklotz Margarita Bessonova Jeremias Hey Florian Beuer Prospective clinical study to evaluate the success and survival of two-piece zirconia implants: a single-center study. 12-month results International Journal of Implant Dentistry Ceramic implants Zirconia Two-piece implants Implant fracture Screw-retained restoration Dental implants |
| title | Prospective clinical study to evaluate the success and survival of two-piece zirconia implants: a single-center study. 12-month results |
| title_full | Prospective clinical study to evaluate the success and survival of two-piece zirconia implants: a single-center study. 12-month results |
| title_fullStr | Prospective clinical study to evaluate the success and survival of two-piece zirconia implants: a single-center study. 12-month results |
| title_full_unstemmed | Prospective clinical study to evaluate the success and survival of two-piece zirconia implants: a single-center study. 12-month results |
| title_short | Prospective clinical study to evaluate the success and survival of two-piece zirconia implants: a single-center study. 12-month results |
| title_sort | prospective clinical study to evaluate the success and survival of two piece zirconia implants a single center study 12 month results |
| topic | Ceramic implants Zirconia Two-piece implants Implant fracture Screw-retained restoration Dental implants |
| url | https://doi.org/10.1186/s40729-025-00621-x |
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