THE EFFECT OF SEALER AND WATER STORAGE ON PERMANENT DEFORMATION OF A TISSUE CONDITIONER

• Main Authors: Luciana Valadares Oliveira, Rosa Virginia Lopes da Matta, Marcelo Ferraz Mesquita, Guilherme Henriques Pessanha Henriques, Rafael Leonardo Xediek Consani
• Format: Article
• Language: Portuguese
• Published: Universidade Estadual do Sudoeste da Bahia 2008-04-01
• Series: Revista Saúde.com
• Subjects: tissue conditioners; resilient liners; permanent deformation
• Online Access: http://www.uesb.br/revista/rsc/ojs/index.php/rsc/article/view/88/436

When they are used to treat inflamed, irritated, or distorted tissues or in implant therapy, tissue conditioners are required to function over relatively long time periods. Purpose: This in vitro study evaluated the effect of sealer and water storage on permanent deformation one tissue conditioner. Material and methods: Sixty cylindrically-shaped specimens (12.7-mm diameter 3 19.0-mm height) were used for the deformation tests. Specimens were divided into 6 test groups (n=10), according to surface treatment (sealer application) and water storage (1 hour, 1 week and 2 weeks). Permanent deformation, expressed as a percent (%), was determined using ADA specification no. 18. Data were examined a analysis of variance and a Mann-Whitney test (α= 0.05). Results: Significant differences were observed only after 1 week of water storage, for both groups. The surface treated group presented the highest permanent deformation percentage. Conclusions: This in vitro study indicated that the tissue conditioner evaluated is only useful for 1 week. After this period, the material must be replaced.