Polyethylene terephthalate clamps: optimization in endodontic and restorative practices

• Anna-Flávia Ferreira e Cunha ^[2] ; Isabela-Ribeiro Madalena ^[3] ; Erika-Calvano Küchler ^[1] ; Tiago-Lima Pereira ^[2] ; Richard Honorato ^[2] ; Fernando-Carlos-Hueb de Menezes ^[2] ; César-Penazzo Lepri ^[2] ; Maria-Angélica-Hueb-de Menezes Oliveira ^[2]
  1. [1] University of Regensburg

     University of Regensburg

     Kreisfreie Stadt Regensburg, Alemania

     
  2. [2] Department of Biomaterials, University of Uberaba - UNIUBE, Uberaba, Minas Gerais, Brazil
  3. [3] Department of Dentistry, University of Joinville Region, Joinville, Santa Catarina, Brazil; School of Dentistry, Presidente Tancredo de Almeida Neves University Center, São João del Rei, Minas Gerais, Brazil; Department of Restorative Dentistry, School of Dentistry, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil

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• Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 14, Nº. 8 (August), 2022, págs. 621-624
• Idioma: inglés
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• Resumen

  • There is a growing search for innovations in dental materials and instruments and, therefore, an increase need to optimize the instruments used in the absolute isolation. The gold standard procedure contributes significantly to the quality of restorative and endodontic procedures. Thus, the aim of the present study was to evaluate the radiopacity of polyethylene terephthalate polymer clamps and compare them to conventional metal clamps.

    The polyethylene terephthalate clamp was developed at the University of Uberaba (Patent application #PI0901719-4, Uberaba, MG, Brazil). Five polyethylene terephthalate clamps and five conventional metal clamps were used. The clamps were positioned, next to an aluminum scale, under the same phosphor plate to perform 3 radiographs. The locator cylinder was set perpendicular to the radiographic films at a focal length of 20 cm and set to 60 kVp and 0.06 seconds. After image processing, optical density values were read using DBWin 5.0.4 software. The mean of the 3 readings taken on each clamp was adopted as the radiodensity of the specimen. The differences between the groups were compared using Student’s t-test (p<0.05).

    Polyethylene terephthalate clamps demonstrated significantly lower radiopacity than conventional metal clamps (p<0.05).

    Polyethylene terephthalate clamps have lower radiopacity when compared to conventional metal clamps.