Long-term effects of titanium-base abutments on peri-implant health: A 5-year randomized controlled trial

Rathe, Florian; Junker, Rüdiger; Heumann, Christian; Blumenroehr, Julia; Auschill, Thorsten; Arweilei, Nicole und Schlee, Markus (2022): Long-term effects of titanium-base abutments on peri-implant health: A 5-year randomized controlled trial. In: Implantologie, Bd. 30, Nr. 4: S. 403-416

Abstract

Titanium bases are used frequently in daily practice for bonding to CAD/CAM abutments or crowns. Due to intimate contact between the adhesive gap of the titanium-base abutment and the peri-implant bone, the physical and chemical characteristics of the bonding material, or the gap itself, may affect peri-implant inflammatory reactions. The present study therefore aimed to examine the long-term effects of individualized abutments bonded to titanium bases on peri-implant health. A total of 24 patients, each with one test and one control abutment, participated in the present prospective, single-blind, randomized controlled clinical trial. The test abutments were CAD/CAM titanium abutments bonded to titanium bases. As the control abutments were individualized, one-piece CAD/CAM titanium abutments were used. Clinical and radiographic parameters were assessed at abutment insertion and then on a yearly basis over the following 5 years. No significant differences in marginal bone level were observed between the titanium-base and one-piece abutments at any of the follow-up time points;however, when intragroup marginal bone levels were compared to the baseline values, significant differences were found at several follow-up time points. Intergroup differences were only found to be significant for pocket depth at the 4-(P = 0.006) and 5-year follow-ups (P = 0.024), favoring titanium-base abutments. Within the limitations of the present study, it appears that the peri-implant tissues of this specific patient cohort responded to titanium-base abutments in a rather similar manner to one-piece abutments over a 5-year period;however, no definitive conclusions can be drawn due to the low power of the present study.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Mathematik, Informatik und Statistik > Statistik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 510 Mathematik
• ISSN: 0943-9692
• Sprache: Englisch