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Volume 37 , Issue 5
September/October 2017
Pages 721–727

Influence of Abutment Height on Maintenance of Peri-implant Crestal Bone at Bone-Level Implants: A 3-Year Follow-up Study

Lourdes Nóvoa, DDS/Pilar Batalla, DDS, PhD/Leticia Caneiro, DDS/Alexandre Pico, DDS/Antonio Liñares, DDS, PhD/Juan Blanco, MD, DDS, PhD

PMID: 28817138
DOI: 10.11607/prd.2762

In this 3-year follow-up study, peri-implant bone loss at bone-level implants was evaluated with two definitive abutment heights: 1 mm and 2.5 mm. Peri-implant bone loss was defined as the distance between the implant shoulder and the first bone-to-implant contact from the time of loading to the 36-month follow-up, estimated using periapical radiographs. The bone loss was increased at the time of follow-up, to 1.30 mm (95% confidence interval [CI]: 0.70–1.89 mm; SD = 1.89) and 0.33 mm (95% CI: 0.11–0.55; SD = 0.59) at 36 months in short and long abutments, respectively. Placement of short abutments induced higher peri-implant bone loss at bone-level implants during a peri-implant recall program.

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