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

Suzuki, Yasunori; Kurihara, Daisuke; Fukui, Rie; Ohkubo, Chikahiro; Hanatani, Shigeru; Takishin, Norio; Miyata, T; Obana, J

doi:10.2186/jjps.38.1005

Cited by 2 publications

(3 citation statements)

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“…Recently, various chemically accelerated and light‐activated polymers have been developed for a hard reline resin that exhibits less tissue irrigation during polymerization. Many investigators examined the flexural strength of denture base polymers and reline polymers ( Hargreaves, 1983; Reitz, Sanders & Levin, 1985; Montes‐G & Draughn, 1986; Wyatt, Harrop & MacEntee, 1986; Bunch, Johnson & Brudvik, 1987; Shlosberg et al ., 1989 ; Hayakawa et al ., 1990 ; Iwahori, 1992), bonding of reline polymer to the denture base polymer ( Arena, Evans & Hilton, 1993; Olvera & de Rijk, 1994; Suzuki et al ., 1994 ; Yasukawa, 1995) water absorption and color change of the new hard reline polymer ( Hayakawa et al ., 1990 ; Arima, Murata & Hamada, 1995). Arima et al (1995) reported the flexural strength of six auto‐polymerizing reline polymers, and they demonstrated that the flexural strength of the resins ranged from 21 to 56 MPa and were lower than those of heat‐cure denture base polymers.…”

Section: Introductionmentioning

confidence: 99%

Flexural strength of rebased denture polymers

Archadian

Kawano

Ohguri

et al. 2000

J of Oral Rehabilitation

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The properties of denture base and reline resins may be affected by daily changes between room temperature and mouth temperature. The purpose of the study was to evaluate the effect of thermocycling on the flexural strength of the relined denture base polymer with reline resin. Three denture base resins, three hard reline resins and their combinations were tested. Fourteen specimens, 65x10x2.5 mm, were fabricated for each material. Polymer combination specimens were made using 1.5 mm hard reline resin on 1.0 mm cured denture base resins. Half of the specimens were stored for 50+/-2 h in distilled water at 37 degrees C, while the other half were thermocycled for 20 000 cycles between 4 and 60 degrees C. Three point bending tests were conducted on a universal testing machine at a cross-head speed of 0.5 cm/s. The flexural strengths were measured and a statistical analysis was performed on the data using three-way ANOVA (P<0.05). The results showed that the flexural strength of relined denture base polymer was significantly higher than that of hard reline polymer. Thermocycling did not affect the flexural strength of the relined denture base polymers, whereas the denture base polymer and reline polymer alone showed a decrease in strength after thermocycling.

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Section: Introductionmentioning

confidence: 99%

Flexural strength of rebased denture polymers

Archadian

Kawano

Ohguri

et al. 2000

J of Oral Rehabilitation

View full text Add to dashboard Cite

show abstract

“…Dentures should be expected to break less readily after reline, as the fit of the dentures to the residual ridge improves and the load becomes better distributed. It has been found, however, that the mechanical strength of reline material is lower than that of the denture base resin, and thus the mechanical strength of the relined denture base may diminish by the influence of the reline material [17,18,35]. Therefore, it is preferable for the reline material to have high mechanical strength.…”

Section: Mechanical Strengthmentioning

confidence: 99%

“…Therefore, it is preferable for the reline material to have high mechanical strength. Many studies on the strength of direct reline materials assess the mechanical strength with bending strength until fracture [18,19,24,35]. However, dentures cannot be used if they become fractured or permanently deformed.…”

Section: Mechanical Strengthmentioning

confidence: 99%