Evaluation of the cervical adaptation of the calcinable UCLA component used in fixed prostheses: A comparative study using scanning electron microscopy

Marcos Andrade Oliva, Fábio José Barbosa Bezerra, Maria Emília Santos Pereira Ramos, Bruna Ghiraldini, Aristóteles Goes Neto

The aim of this study was to evaluate in vitro the implant-abutment interface misfitting of external hex UCLA abutments used for full-arch implant-supported prostheses, using scanning electron microscopy (SEM). Six aluminium models were used, which were divided into two groups: a) the MINI group (1-mm mini-abutments); and b) the UCLA group (UCLA abutments that were fused with a prosthetic bar). The MINI group was used as control. After applying the torque recommended by the manufacturer, the measurements of the vertical misfitting were obtained via SEM at three points with the same distances, on the buccal and lingual surfaces. The UCLA group presented higher maladaptation (10.8 ± 2.2 μm) than the MINI group (3.1 ± 1.3 μm) (p < 0.05). Among the limitations of this study, the UCLA group presented higher marginal vertical discrepancies than control group.

Keywords: Dental implants. Dental prosthesis, Implant-supported. Scanning electron microscopy.

How to cite: Oliva MA, Bezerra FJB, Ramos MESP, Ghiraldini B, Goes Neto A. Evaluation of the cervical adaptation of the calcinable UCLA component used in fixed prostheses: A comparative study using scanning electron microscopy. J Clin Dent Res. 2017 Jul-Sept;14(3):62-9. DOI: https://doi.org/10.14436/2447-911x.14.3.062-069.oar

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