| Autor: |
Yoshiyuki Amari, Adriano Piattelli, Karol Alí Apaza Alccayhuaman, Natalia Fortich Mesa, Mauro Ferri, Giovanna Iezzi, Daniele Botticelli |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
International Journal of Implant Dentistry, Vol 5, Iss 1, Pp 1-9 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
2198-4034 |
| DOI: |
10.1186/s40729-019-0194-2 |
| Popis: |
Abstract Objectives To evaluate histomorphometrically the healing at implants installed with standard or very low insertion torque values Material and methods Twelve volunteer patients were recruited, and two screw-shaped titanium devices were installed in the distal segments of the mandible using insertion torque values of either < 10 Ncm or ~ 30 Ncm. The implants were left to heal in a non-submerged fashion. After 8 weeks, biopsies were retrieved, and ground sections were prepared for histological evaluation. Results Histological slides from 11 patients were available for (n = 11). The new bone in contact with the implant surface was 39.3 ± 18.5% and 49.4 ± 9.4% at the < 10 and ~ 30 Ncm sites, respectively. Considering the pre-existing old bone, the total mineralized bone was 46.8 ± 22.1% at the < 10 Ncm sites and 57.0 ± 14.1% at the ~ 30 Ncm. No statistically significant differences were found. New bone density and total mineralized bone density were 36.6 ± 8.1% and 53.0 ± 13.5% at the < 10 Ncm sites and 35.9 ± 10.0% and 52.2 ± 16.0% at the ~ 30 Ncm sites, respectively. No statistically significant differences were disclosed. Conclusion From the data of the present study, it can be concluded that a trend of higher osseointegration was observed at the ~ 30 Ncm compared to the < 10 Ncm torque group. Nevertheless, it can be concluded that an implant installed with a very low torque may achieve a good integration. Trial registration ClinicalTrials.gov NCT04017156; trial retrospectively registered on 12 July 2019. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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