Single-Blind Randomized Trial to Evaluate Marginal Bone Loss of Immediate Implant Placement Supporting Metal Versus Peek Full Arch Prosthesis

Marta Belen Cabo Pastor¹*, Bibiana Fabado Martinez¹, Jose Juan Peidro Puerto¹, Otto Aleman Miranda², Valeria Simonovis³, Giselle Ramos Martinez⁴ and Lilian Georgina Torralbas Buitrago⁵
Doctor of Stomatology, Specialist in oral and Maxillofacial surgery, Cuba
*Corresponding Author: Otto Aleman Miranda, Doctor of Stomatology, Specialist in oral and Maxillofacial surgery, Cuba.

Published: July 03, 2025

DOI: 10.55162/MCMS.09.299

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Abstract  

Objectives: Immediately loaded implants have evolved due to the constant need to achieve more efficient and satisfactory prosthetic restorations for patients.

The main aim of this study was the radiographical assessment of peri-implant marginal bone loss when immediate load was applied to rehabilitate patients with partially edentulous (when the extraction of all remaining teeth was indicated) or edentulous mandible or maxilla, using full-arch fixed metal or peek prosthesis.

Methods: Prospective, single-blind clinical study with a control group (metal) used to be compared to the experimental material (peek). An initial descriptive analysis and a bivariate analysis were carried comprising all the statistical contrasts needed for the evaluation of the relationship to bone loss.

Results: In the radiographic study performed after 4 months in the maxilla and after 3 months in the mandible, a vertical bone loss of 0.07 mm and a horizontal bone loss of 0.02 mm were observed. It is noticeable that smokers and patients with parafunctions showed a greater bone loss, compared with those patients who did not have these habits. These results were also observed in cases with immediate post-extraction implants, where immediate loading with full-arch prosthesis was performed. On the other hand, the insertion torque and the materials used are factors that result in lower bone loss.

Conclusions: The material peek, as well as the insertion torque applied to the implants, are factors that protect against peri-implant bone loss, both the risk of suffering bone loss and the amount of bone loss.

Keywords: Immediate loading; osseointegration; bone loss; immediate implants after extraction

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