Person:
Gómez Cogolludo, Pablo

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First Name
Pablo
Last Name
Gómez Cogolludo
URI
https://hdl.handle.net/20.500.14352/79720
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Odontología
Department
Odontología Conservadora y Prótesis
Area
Estomatología
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Author: Gómez Cogolludo, Pablo × Subject: 616.314 ×

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Now showing 1 - 2 of 2
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    A four-year prospective clinical evaluation of zirconia and metal-ceramic posterior fixed dental prostheses
    (The International Journal of Prosthodontics, 2012) Peláez Rico, Jesús; Gómez Cogolludo, Pablo; Serrano Madrigal, Benjamín; Serrano, Jose F. L.; Suárez García, María Jesús
    Purpose: The aim of this study was to compare the survival rates and biologic and technical complications of three-unit metal-ceramic posterior fixed dental prostheses (FDPs) with those obtained with zirconia frameworks. Materials and methods: Thirty-seven patients in need of 40 three-unit posterior FDPs were included in this study. The FDPs were randomly assigned to 20 zirconia and 20 metal-ceramic restorations. Abutment preparation guidelines consisted of a 1-mm-wide circumferential chamfer, axial reduction of 1 mm, and occlusal reduction of 1.5 to 2 mm. At baseline and 1, 2, 3, and 4 years after cementation, success of both types of restorations was evaluated. The restorations were assessed using the California Dental Association's assessment system. Periodontal parameters were assessed by determining the Plaque Index (PI), Gingival Index (GI), Marginal Index (MI), and pocket depth of the abutment and control teeth. Statistical analysis was performed by applying Wilcoxon rank sum and Wilcoxon signed-rank tests. Results: Patients were examined after a mean observation period of 50 ± 2.4 months. The survival rates for metal-ceramic and zirconia restorations were 100% and 95%, respectively. One biologic complication in a zirconia FDP was observed at the 3-year follow-up. No fractures of the zirconia or metal frameworks were observed. Restorations from both groups were assessed as satisfactory. Minor chipping of the veneering ceramic was observed in 2 zirconia FDPs after 4 years. No significant differences were observed between abutment and contralateral teeth for either type of restoration or within the groups with regard to PI, GI, and pocket depth. Conclusion: Zirconia-based FDPs demonstrated a similar survival rate to metal-ceramic FDPs after medium-term clinical use.
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    A prospective evaluation of zirconia posterior fixed dental prostheses: three-year clinical results
    (The Journal of Prosthetic Dentistry, 2012) Peláez Rico, Jesús; Gómez Cogolludo, Pablo; Serrano Madrigal, Benjamín; López Lozano, José Francisco; Suárez García, María Jesús
    Statement of problem: Although the favorable mechanical properties of zirconium oxide-based ceramics have increased the acceptance of fixed dental prostheses for use in the posterior regions of the mouth in recent years, there are few clinical studies documenting the longevity of these restorations. Furthermore, certain complications must be resolved before the material is used more extensively. Purpose: The purpose of this randomized prospective study was to evaluate the clinical performance of zirconia (Lava) 3-unit posterior fixed dental prostheses. Material and methods: Twenty 3-unit fixed dental prostheses were placed in 17 participants to replace a second premolar or a first molar. Eleven were placed in the maxilla and 9 in the mandible. All abutment teeth were prepared with a chamfer finish line of 0.8 to 1 mm, and frameworks were prepared with the Lava system. Restorations were cemented with a resin cement. Two calibrated examiners independently evaluated the fixed dental prostheses 1 week (baseline) and 1, 2, and 3 years after placement with the California Dental Association quality evaluation system. The periodontal parameters: the gingival index, plaque index, margin index, and the probing depths of abutment teeth and contralateral teeth were assessed. Data were analyzed by using descriptive statistics and the Wilcoxon signed-rank test (α=.05). Results: All fixed dental prostheses were rated satisfactory after 3 years, and no fracture of the framework was observed during the observation period. One fixed dental prostheses was lost because of a biological complication at the 3-year examination, and a small degree of chipping of the veneering ceramic was observed in 2 participants. No significant differences among the periodontal parameters of the test and control teeth were observed except for the margin index. Conclusions: The results of a 3-year evaluation suggest that posterior zirconia 3-unit fixed dental prostheses are a reliable treatment.