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Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial
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Inicio Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial Clinical Performance of an Experimental Veneering Composite in FPDs. One-year re...
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Vol. 48. Issue 3.
Pages 133-139 (July - September 2007)
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Vol. 48. Issue 3.
Pages 133-139 (July - September 2007)
Investigação
Open Access
Clinical Performance of an Experimental Veneering Composite in FPDs. One-year report.
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Jaime Portugal, Mário Filipe Bernardo, Cristiana Pereira, Pedro Rabaço, Leonel González, Manuel Marques, Tiago Mourão, António Vasconcelos Tavares, Jorge Leitão
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Abstract
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Resumo
Objectivos

Avaliar o desempenho clínico de pontes fixas com 3 elementos, construídas com um compósito experimental microparticulado, sobre infra-estrutura em compósito com fibra ou em metal.

Materiais e métodos

Foram fabricadas 60 pontes com uma versão experimental do compósito de revestimento, SR Adoro. Metade das pontes tinha uma infra-estrutura em Vectris, e a outra metade numa liga de ouro. Os parâmetros avaliados foram: “estabilidade cromática”, “textura de superfície”, “contorno marginal”, “fenda marginal”, “fractura”, “cárie secundária”, “retenção” e “sensibilidade dos dentes pilares”. As pontes foram classificadas como: R (ideal), S (aceitável) ou T/V (inaceitável). Os resultados obtidos foram analisados estatisticamente com os testes de Mann-Whitney e Wilcoxon.

Resultados

No grupo Adoro/Ouro, a comparação dos resultados obtidos em Baseline e 1-ano demonstrou não haver alteração na “estabilidade cromática”. Foi no entanto encontrada uma degradação estatisticamente significativa em “textura superficial” (p=0.007), “contorno marginal” (p=0.014), “fenda marginal” (p=0.034) e “fractura” (p=0.025). As alterações observadas foram de R para S excepto no critério “fenda marginal” com uma ponte classificada T/V, e “fractura” com 5 classificações T/V. Uma vez que se trataram apenas de pequenas fracturas do SR Adoro, apenas uma ponte foi substituída. No grupo Adoro/Vectris, apenas se observou degradação estatisticamente significativa na “textura de superfície” (p=0.001). A comparação dos resultados obtidos nos dois grupos, em cada período, evidenciou diferenças estatisticamente significativas para “sensibilidade” em Baseline (p<0,001).

Conclusões

Após 1 ano, embora revelando alguns problemas, a performance global deste novo material pode ser considerada como boa.

Palavras-Chave:
Prostodontia
Ensaio clínico, Compósito de revestimento
Compósitos reforçados com fibras
Abstract
Purpose

To evaluate the clinical performance of an experimental veneering composite in 3-unit fixed partial dentures and to assess the influence of the framework material on the mentioned performance.

Materials and Methods

A total of 60 fixed partial dentures were made with the experimental version of SR Adoro veneering composite. Half had a Vectris framework, and the other half gold alloy. Evaluation criteria were: shade match, surface texture, marginal shoulder, marginal gap, fracture, recurrent caries, retention, and abutment tooth hypersensitivity. The fixed partial dentures were rated as: R (ideal), S (acceptable) or T/V (unacceptable). Statistical analysis was performed using Mann-Whitney and Wilcoxon tests.

Results

Comparison between Baseline and 1-Year in the Adoro/Gold group showed no change in color match. A statistical significant degradation in surface texture (p=0.007), marginal shoulder (p=0.014), marginal gap (p=0.034), and fracture (p=0.025) was found. All changes were minor from R to S except in the criteria marginal gap where 1 bridge was rated T/V, and fracture with 5 T/V ratings. Since fractures consisted in loss of small parts of veneering composite, 4 of these fixed partial dentures remained in service and only 1 was replaced. In Adoro/Vectris group only surface texture degradation was statistically significant (p=0.001). Nevertheless, SR Adoro maintained a clinically acceptable surface texture. Comparing the results for the two groups in each period, the only statistically significant differences found, was on hypersensitivity at Baseline (p<0.001).

Conclusions

After one year, the overall performance of the experimental veneering composite was acceptable.

Key-words:
Prosthodontics
Clinical trial
Veneering composite
Fixed partial dentures
Glass-fiber reinforced framework
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(Portugal J, Bernardo MF, Pereira C, Rabaço P, González L, Marques M, Mourão T, Tavares AV, Leitão J. Clinical Performance of an Experimental Veneering Composite in FPDs. One-year report. Rev Port Estomatol Cir Maxilofac 2007;48:133–139)

Copyright © 2007. Sociedade Portuguesa de Estomatologia e Medicina Dentária
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