J Korean Acad Prosthodont.  2012 Oct;50(4):279-284. 10.4047/jkap.2012.50.4.279.

Effect of location of glass fiber pre-impregnated with light-curing resin on the fracture strength and fracture modes of a maxillary complete denture

• Yoo HS
• Sung SJ
• Jo JY
• Lee DC
• Huh JB
• Jeong CM

• KMID: 2195469
• DOI: http://doi.org/10.4047/jkap.2012.50.4.279

Abstract

PURPOSE
This study evaluated the effect of glass fiber pre-impregnated with light-curing resin on the fracture strength and fracture modes of a maxillary complete denture.
MATERIALS AND METHODS
Maxillary acrylic resin complete dentures reinforced with glass fiber pre-impregnated with light-curing resin (SES MESH, INNO Dental Co., Yeoncheon-gun, Korea) and without reinforcement were tested. The reinforcing material was embedded in the denture base resin and placed different regions (Control, without reinforcement; Group A, center of anterior ridge; Group B, rugae area; Group C, center of palate; Group D, full coverage of denture base). The fracture strength and fracture modes of a maxillary complete denture were tested using Instron test machine (Instron Co., Canton, MA, USA) at a 5.0 mm/min crosshead speed. The flexure load was applied to center of denture with a 20 mm diameter ball attachment. When fracture occurred, the fracture mode was classified based on fracture lines. The data were analyzed with one-way ANOVA at the significance level of 0.05.
RESULTS
There were non-significant differences (P>.05) in the fracture strength among test groups. Group A showed anteroposterior fracture and posterior fracture mainly, group B, C and control group showed partial fracture on center area mostly. Most specimen of group D showed posterior fracture.
CONCLUSION
The location and presence of the fiber reinforcement did not affect the fracture strength of maxillary complete denture. However, reinforcing acrylic resin denture with glass fiber has a tendency to suppress the crack.

Keyword

Glass fiber; Fracture of denture; Reinforcement of denture

MeSH Terms

Denture Bases
Denture, Complete
Dentures
Glass
Reinforcement (Psychology)

Figure

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  Fig. 1 SES MESH used in this study. 85 - 90% of the mesh is made up of a glass fiber.

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  Fig. 2 Ball attachment for flexural load test.

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  Fig. 3 Edentulous model with recess for ball attachment.

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  Fig. 4 Location of SES MESH of the maxillary complete denture: (A) the anterior ridge lap region, (B) the rugae region, (C) the middle region, (D) full coverage, (E) without reinforcement.

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  Fig. 5 Flexural load test using ball attachment.

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  Fig. 6 Fracture mode of dentures : (A) anteroposterior fracture in group A, (B) anterior fracture in group B, (C) partial fracture on center area in group C, (D) posterior fracture in group D, (E) no significant fracture line in group E.

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