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4. Ten-Year Performance of Posterior 6-mm Implants with Single-Tooth Restorations: A Randomized Controlled Trial.

Author

Sahrmann, P., Naenni, N., Jung, R.E., Hämmerle, C.H.F., Attin, T., and Schmidlin, P.R.

Subjects
RANDOMIZED controlled trials, DENTAL implants, TEETH polishing, MANDIBLE, ORAL hygiene, INTERDENTAL papilla
Abstract

The aim of the study was to compare the clinical and radiographic outcomes of short dental implants (6-mm test group, TG) to longer implants (10-mm control group, CG) with single crown restorations after 10 y of loading. Patients requiring single-tooth replacement in the posterior jaws were randomly assigned to TG or CG. Implants were loaded with screw-retained single crowns after a healing period of 10 wk. Follow-up appointments were scheduled yearly and comprised patient-adapted oral hygiene reinstructions and polishing of all teeth and implants. After 10 y, clinical and radiographical parameters were assessed again. Out of initially 94 patients (47 in TG and CG, each), 70 (36 TG and 34 CG) could be reassessed. Survival rates accounted for 85.7% (TG) and 97.1% (CG), without significant intergroup difference (P = 0.072). All but 1 lost implant had been located in the lower jaw. These implants were not lost due to peri-implantitis but due to a late loss of osseointegration without signs of inflammation and with actually stable marginal bone levels (MBLs) over the investigation period. In general, MBLs were stable with medians (interquartile ranges) of 0.13 (0.78) mm and 0.08 (1.2) mm, for TG and CG, without significant intergroup differences. Crown-to-implant ratio showed a highly significant intergroup difference of 1.06 ± 0.18 mm and 0.73 ± 0.17 mm (P < 0.001). Few technical complications (i.e., screw loosening or chipping) were registered during the investigation period. In conclusion, given stringent professional maintenance, short dental implants with single-crown restorations show a slightly worse but statistically not different survival rate after 10 y, especially in the lower jaw, but can still be considered a valuable alternative, especially when vertical bone dimensions are limited (German Clinical Trials Registry: DRKS00006290). [ABSTRACT FROM AUTHOR]

Published
2023
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5. sj-docx-1-jdr-10.1177_00220345231170538 – Supplemental material for Ten-Year Performance of Posterior 6-mm Implants with Single-Tooth Restorations: A Randomized Controlled Trial

Author

Sahrmann, P., Naenni, N., Jung, R.E., Hämmerle, C.H.F., Attin, T., and Schmidlin, P.R.

Subjects
Materials Engineering not elsewhere classified, Dentistry not elsewhere classified
Abstract

Supplemental material, sj-docx-1-jdr-10.1177_00220345231170538 for Ten-Year Performance of Posterior 6-mm Implants with Single-Tooth Restorations: A Randomized Controlled Trial by P. Sahrmann, N. Naenni, R.E. Jung, C.H.F. Hämmerle, T. Attin and P.R. Schmidlin in Journal of Dental Research

Published
2023
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