Polymerization kinetics of experimental bioactive composites containing bioactive glass

Par, Matej; Tarle, Zrinka; Hickel, Reinhard; Ilie, Nicoleta

doi:10.1016/j.jdent.2018.06.012

Cited by 39 publications

(51 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The decrease of DC with increasing BG amounts observed in the composites functionalized with BG 45S5 is consistent with previous studies of experimental composites featuring similar compositions 32 , 33 . On the other hand, no negative effect on DC was identified in composites functionalized with the experimental low-sodium fluoride-containing BG in a previous study 12 nor in the present study.…”

Section: Discussionsupporting

confidence: 92%

“…The curing conditions used in this study were determined in a preliminary study, which showed that curing with 1340 mW/cm 2 for 20 s produced homogeneous curing throughout the 1.5 mm thick specimens. Although the specimens were thoroughly cured, the development of polymerization shrinkage stress might have been influenced by the effect of unsilanized BG fillers on polymerization kinetics 33 . This aspect will be addressed in forthcoming studies that will investigate the dynamic changes of DC and light transmittance during polymerization using real-time FTIR and UV–vis spectrometry, respectively.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Polymerization shrinkage behaviour of resin composites functionalized with unsilanized bioactive glass fillers

Par

Mohn

Attin

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

Previous work has shown that partial replacement of reinforcing fillers with unsilanized silica particles can diminish polymerization shrinkage stress of dental resin composites. The aim of the present study was to investigate whether such an effect can be attained by using unsilanized bioactive glass (BG). Incorporating BG fillers into resin composites is interesting due to their potential for exerting caries-preventive effects. Experimental light-curable composites with a total filler load of 77 wt% were prepared. Reinforcing fillers were partially replaced with 0–60 wt% of BG 45S5 and an experimental low-sodium fluoride-containing BG. The following properties were investigated: linear shrinkage, degree of conversion, shrinkage stress, maximum shrinkage stress rate, and time to achieve maximum shrinkage stress rate. The diminishing effect of BG 45S5 on shrinkage stress was mediated by a decrease in degree of conversion caused by this BG type. In contrast, as the degree of conversion remained unaffected by the experimental BG, the resulting shrinkage behaviour was governed by the effect of varying amounts of silanized and unsilanized fillers on material’s viscoelastic properties. The replacement of silanized reinforcing fillers with unsilanized BG did not reduce polymerization shrinkage stress unless the reduction was attained indirectly through a diminished degree of conversion.

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Polymerization shrinkage behaviour of resin composites functionalized with unsilanized bioactive glass fillers

Par

Mohn

Attin

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…Previous studies showed that the DC of resin composites could be impaired by the addition of BG 45S5 [22][23][24]. This phenomenon was confirmed in the present study for the composite series functionalized with BG 45S5, which showed a dose-dependent DC decline.…”

Section: Discussionsupporting

confidence: 90%

“…The degree of conversion (DC) represents a fundamental parameter governing mechanical properties and biocompatibility of polymer-based materials [18][19][20][21]. Previous studies indicated that BG 45S5 can impair the DC of experimental resin composites [22][23][24]. Since the present study is the first to investigate a particular novel BG composition, the possibility of it exerting a negative effect on DC was evaluated.…”

Section: Introductionmentioning

confidence: 95%

“…The total filler load in all composites was 70 wt%. The ratios of BG and reinforcing fillers followed previous studies of experimental BG-functionalized composites [23,24,28,29]. The resin system and the fillers were mixed using a dual asymmetric centrifugal mixing system (SpeedMixer DAC 150.1 FVZ, Hauschild and Co. KG, Hamm, Germany) at 2000 rpm.…”

Section: Experimental and Reference Materialsmentioning

confidence: 99%

See 1 more Smart Citation

A New Customized Bioactive Glass Filler to Functionalize Resin Composites: Acid-Neutralizing Capability, Degree of Conversion, and Apatite Precipitation

Par

Attin

Tarle

et al. 2020

JCM

Self Cite

View full text Add to dashboard Cite

This study introduced an experimental bioactive glass (BG) with a lower Na2O content than conventional BG 45S5 (10.5 wt% vs. 24.5 wt%), additionally containing CaF2 (12 wt%) and a network connectivity similar to that of BG 45S5. A series of experimental composites functionalized with 5–40 wt% of the novel BG was prepared and compared to a corresponding series of experimental composites functionalized with 5–40 wt% of BG 45S5. Commercial acid-neutralizing materials (alkasite, giomer, and glass ionomer) were used as references. The capabilities of the materials to neutralize hydrochloric acid (pH = 2.6) and lactic acid (pH = 4.5) were evaluated by real-time pH measurements over 1 h. The degree of conversion and precipitation of calcium phosphate were also investigated. Data were analyzed using one-way and Welch ANOVA at an overall level of significance of 0.05. The acid-neutralizing potential of the experimental BG incorporated into resin composites was generally comparable to that of BG 45S5, and better than that of a giomer and glass ionomer. Fluorine was identified in the precipitate that developed on the composites functionalized with the experimental BG, suggesting a capability of forming fluorapatite. Unlike the 45S5 composition, the experimental BG did not impair the degree of conversion of resin composites. The novel BG filler is therefore an interesting candidate for future investigations of caries-preventive resin composites, and their potential clinical applicability for restorative, preventive, and orthodontic purposes.

show abstract

The influence of inorganic fillers on the light transmission through resin-matrix composites during the light-curing procedure: an integrative review

et al. 2022

View full text Add to dashboard Cite

Polymerization kinetics of experimental bioactive composites containing bioactive glass

Cited by 39 publications

References 33 publications

Polymerization shrinkage behaviour of resin composites functionalized with unsilanized bioactive glass fillers

Polymerization shrinkage behaviour of resin composites functionalized with unsilanized bioactive glass fillers

A New Customized Bioactive Glass Filler to Functionalize Resin Composites: Acid-Neutralizing Capability, Degree of Conversion, and Apatite Precipitation

The influence of inorganic fillers on the light transmission through resin-matrix composites during the light-curing procedure: an integrative review

Contact Info

Product

Resources

About