An Experimental Study on Bending Strength in Powder-Liquid VLC Reline Material

• Published in: Nihon Hotetsu Shika Gakkai Zasshi Vol. 38; no. 5; pp. 1005 - 1014
• Main Authors: Suzuki, Yasunori, Ohkubo, Chikahiro, Kurihara, Daisuke, Miyata, Takayoshi, Obana, Jin-ichi, Hanatani, Shigeru, Takishin, Norio, Fukui, Rie
• Format: Journal Article
• Language: Japanese
• Published: Japan Prosthodontic Society 01.10.1994
• Subjects: bending deformation; bending strength; denture base resin; reline materials; three-point flexure test
• ISSN: 0389-5386; 1883-177X
• DOI: 10.2186/jjps.38.1005

The purpose of this study was to investigate the effect on the bending strength of denture base resin relined with REBARON LC and to compare it with other direct relining materials. The following experiments were performed as follows. Experiment 1: The bending strength of denture base resin (ACRON) relined with four hard direct relining resins was tested in the three-point flexure test. The immersion time and the thickness of relining resins were varied in this test. Experiment 2: The bending strength of four denture base resins relined with REBARON LC was tested in the three-point flexure test. The following results were obtained: 1. TOKUSO REBASE showed the greatest bending strength and deformation of all relining materials, but there was no significant difference. REBARON LC showed a similar bending strength to other relining materials. 2. As the immersion time increased, the bending strength of REBARON LC, TOKUSO REBASE and EPOREX decreased and the bending deformation of Rebaron, TOKUSO REBASE and EPOREX increased. 3. Regarding the influence of relining resin thickness on the bending strength, the 1.0 mm thickness of REBARON LC had the greatest bending strength followed by 0.5 mm and 1.5 mm. 4. ACRON had the greatest bending strength when relined with REBARON LC, followed by ACRON MC, Palapress and METADENT.