The curing pattern of photo‐initiated dental composites

Lange, C. De; Bausch, J. Robert; Davidson, C.L.

doi:10.1111/j.1365-2842.1980.tb00455.x

Cited by 49 publications

(27 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The reason is probably that this method gives only two registrations per level while cross-sections reveal the whole peripheiy^ of the filling and cavity. DE LANGE et al (9) noticed a decreasing gap along UV-cured resins with the broadest gap in relation to the first polymerized surface. The discrepancy between the results of the present investigation and the findings of DE L.' iNGE el al.…”

Section: Discussionmentioning

confidence: 97%

See 1 more Smart Citation

Visible light‐cured composite resins: polymerization contraction, contraction pattern and hygroscopic expansion

Hansen

1982

European J Oral Sciences

View full text Add to dashboard Cite

– The wall‐to‐wall polymerization contraction and hygroscopic expansion of Durafill®, Heliosit®, Silux® and Visio‐Dispers® were examined in dendn cavities in extracted human teeth. The linear shrinkage varied from 0.24% to 0.63% and only two of the tested materials were able to close the marginal gap owing to water absorption. The gaps were nearly always broadest in the apical part of the fillings. Measurements of the marginal gaps were made at different levels between 100 and 1200 um below the free surface of the fillings and the wall‐to‐wall polymerization contraction was found to increase markedly from the level of 100 urn down to 800 um. The contraction pattern of the four light‐cured resins differed significantly from the one found in a chemically‐cured material.

show abstract

Section: Discussionmentioning

confidence: 97%

“…DE LANGE that the amount of fillers did not influence the etat. (9) noticed that the marginal gaps of several wall-to-wall polymerization contraction.…”

mentioning

confidence: 99%

Visible light‐cured composite resins: polymerization contraction, contraction pattern and hygroscopic expansion

Hansen

1982

European J Oral Sciences

View full text Add to dashboard Cite

show abstract

“…The uncured part of composite restorations can easily dissolve in the oral cavity and subsequently lead to secondary caries. In addition, leaching unreacted monomers from the uncured material can cause local tissue irritations [23,24]. …”

Section: Discussionmentioning

confidence: 99%

Physical Properties of an Ag-Doped Bioactive Flowable Composite Resin

et al. 2015

View full text Add to dashboard Cite

The aim of this work was to study the physical and antibacterial properties of a flowable resin composite incorporating a sol-gel derived silver doped bioactive glass (Ag-BGCOMP). The depth of the cure was calculated by measuring the surface micro-hardness for the top and bottom surfaces. The volumetric polymerization shrinkage was measured by recording the linear shrinkage as change in length, while the biaxial flexural strength was studied measuring the load at failure. The antibacterial properties of the samples were tested against Streptococcus mutans (S. mutans) and Lactobacillus casei (L. casei). The measured values were slightly decreased for all tested physical properties compared to those of control group (flowable resin composite without Ag-BG), however enhanced bacteria inhibition was observed for Ag-BGCOMP. Ag-BGCOMP could find an application in low stress-bearing areas as well as in small cavity preparations to decrease secondary caries. This work provides a good foundation for future studies on evaluating the effects of Ag-BG addition into packable composites for applications in larger cavity preparations where enhanced mechanical properties are needed.

show abstract

“…16 -18 Microhardness profiles were used by de Lange et al 19 and Watts et al 20 to study composites' cure as a function of depth. Despite the correlation between hardness and the degree of monomer conversion, a specific hardness value could not be correlated to a specific degree of conversion when different resin formulations were used, as shown by Ferracane.…”

Section: Discussionmentioning

confidence: 99%

Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies

Uhl

Mills

Vowles

et al. 2002

J. Biomed. Mater. Res.

View full text Add to dashboard Cite

After the first light-emitting diode (LED) light curing units (LCUs) became available commercially, a comparison of mechanical properties between materials polymerized with conventional halogen lamps and this new technology was required. This study, therefore, investigated the curing performance of two conventional commercial halogen LCUs (Translux CL, Spectrum800), a custom-made LED LCU prototype, and one of the first commercially available LED LCUs (LUXoMAX). The Spectrum800 was adjusted to a similar irradiance to the custom-made LED LCU prototype. Both technologies were compared by measuring compressive strength and Knoop hardness depth profiles for selected dental composites polymerized for 20 or 40 s. Four dental composites (Z100, Spectrum TPH, Solitaire2, and Definite) were used. Two of these composites (Solitaire2 and Definite) contain co-initiators in addition to the standard photoinitiator camphorquinone. In general, the material hardness obtained with the LUXoMAX was statistically significantly (p < 0.05) lower at the depths of 0.1, 1.0, 1.9, and 3.1 mm, for all composites and curing times, than for the other three LCUs. The LED LCU prototype achieved, with one exception, up to a depth of 1.9 mm a material hardness for the composites Z100, Spectrum TPH and Solitaire2 that was not statistically significant different (p < 0.05) from the hardness obtained with the halogen LCUs. At a greater depth (3.1 mm), however, the LED LCU prototype showed statistically significantly lower hardness values than the halogen units. The compressive strength test showed at a 95% confidence level that similar compressive strengths were achieved with the LCUs LUXoMAX and Spectrum800, and the Translux and LED LCU prototype.

show abstract

The curing pattern of photo‐initiated dental composites

Cited by 49 publications

References 8 publications

Visible light‐cured composite resins: polymerization contraction, contraction pattern and hygroscopic expansion

Visible light‐cured composite resins: polymerization contraction, contraction pattern and hygroscopic expansion

Physical Properties of an Ag-Doped Bioactive Flowable Composite Resin

Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies

Contact Info

Product

Resources

About