Basic Studies on Visible Light-curing Resin for Denture Base. Part 8. The Hardening Depth of Denture Relining Material after Penetration of Light through the Denture Base Resin.

Abstract

A study was performed to examine how the duration of irradiation at the time of relining with visible light-curing material influences the depth of hardening of the relining material, in relation to the thickness of the denture base placed between the denture and the relining material. It was found that for a range of denture base thickness of 1-2.5mm, a desirable degree of hardening could be obtained using an irradiation time of 20s for relining material with a thickness of up to 4mm used for the basal surface.

Dimensional Stability of Light-Activated Urethane Dimethacrylate Denture Base Resins

“…Secondly, the unreacted monomer may produce undesirable effects on the human body [ 30 ]. However, it has been reported in the literature that polymerized UDMA denture bases are nontoxic and that unpolymerized VLC materials have very low toxicity [ 31 ]. UDMA material has been proven to be less allergenic than other acrylics [ 32 , 33 , 34 ].…”

“…UDMA material has been proven to be less allergenic than other acrylics [ 32 , 33 , 34 ]. The recommendations for VLC denture bases by various authors are not only based on satisfactory strength and dimensional stability but also on ease of manipulation and fabrication [ 31 , 32 , 33 , 34 , 35 , 36 ].…”

Basic Studies on Visible Light-cured Resin as a Denture Base. Part 17 Transverse and Tensile Strengths of Repaired Denture Base Resin Using a Trial Repair Resin.

“…Previously, we have produced various dental prostheses, such as base plates [1], relining materials [2][3][4][5][6][7][8] and artificial crownsm, using visible light-cured resins made of cyclophosphazene monomer [4PN-(TF)2-(EMA)6] [10][11][12][13] (Fig. 1), in order to make such prostheses clinically available in accordance with various purposes.…”