Monomer Conversion, Dimensional Stability, Biaxial Flexural Strength, Ion Release, and Cytotoxicity of Resin-Modified Glass Ionomer Cements Containing Methacrylate-Functionalized Polyacids and Spherical Pre-Reacted Glass Fillers

Potiprapanpong, Wisitsin; Thepveera, Whithipa; Khamsuk, Chutikarn; Channasanon, Somruethai; Tanodekaew, Siriporn; Patntirapong, Somying; Monmaturapoj, Naruporn; Panpisut, Piyaphong

doi:10.3390/polym13162742

Cited by 12 publications

(21 citation statements)

References 65 publications

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“…The specimen was loaded with a 500 N load cell with a crosshead speed of 1 mm/min until the specimen failed. The BFS (Pa) was calculated using the following equation 29 . where F is the failure load (N), d is the thickness of the sample (m), r is the radius of circular support (mm), and a is Poisson’s ratio (0.3).…”

Section: Methodsmentioning

confidence: 99%

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Physical/mechanical and antibacterial properties of orthodontic adhesives containing Sr-bioactive glass nanoparticles, calcium phosphate, and andrographolide

Chaichana

Insee

Chanachai

et al. 2022

Sci Rep

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White spot lesions around orthodontic brackets are the major complication during fixed orthodontic treatment. This study prepared orthodontic adhesives for promoting mineral precipitation and reducing bacterial growth. Adhesives with added calcium phosphate monohydrate/Sr-bioactive glass nanoparticles (Sr/CaP) and andrographolide were prepared. The physical/mechanical and antibacterial properties of the adhesives were tested. The additives reduced the monomer conversion of the materials (62 to 47%). The addition of Sr/CaP and andrographolide increased the water sorption (from 23 to 46 μg/mm3) and water solubility (from 0.2 to 5.9 μg/mm3) but reduced the biaxial flexural strength (from 193 to 119 MPa) of the adhesives. The enamel bond strengths of the experimental adhesives (19–34 MPa) were comparable to that of the commercial material (p > 0.05). The Sr/CaP fillers promoted Ca, Sr, and P ion release and the precipitation of calcium phosphate at the debonded interface. An increase in the Sr/CaP concentration enhanced the inhibition of S. mutans by 18%, while the effect of andrographolide was not detected. The abilities of the adhesives to promote ion release, calcium phosphate precipitation, and the growth inhibition of cariogenic bacteria were expected to reduce the occurrence of white spot lesions. The additives reduced the physical/mechanical properties of the materials, but the corresponding values were within the acceptable range.

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Section: Methodsmentioning

confidence: 99%

“…Statistical significance was set at p = 0.05. The sample size used in each test was calculated by G*Power 3.1 software (University of Dusseldorf, Dusseldorf, Germany) using the results in published studies and a pilot study 10 , 12 , 29 . The result indicated that the sample size in each test gave power > 0.95 at alpha = 0.05.…”

Section: Methodsmentioning

confidence: 99%

Physical/mechanical and antibacterial properties of orthodontic adhesives containing Sr-bioactive glass nanoparticles, calcium phosphate, and andrographolide

Chaichana

Insee

Chanachai

et al. 2022

Sci Rep

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“…The standard calibration was performed using the instrument calibration standards. The ion concentration of Ca and P ions in the mixed solution was analyzed using inductively coupled plasma atomic emission spectroscopy (ICP-OES, Optima 8300, PerkinElmer, Waltham, MA, USA) [32]. The result was analyzed using Syngistix TM for ICL software version 2.0 (PerkinElmer, Waltham, MA, USA).…”

Section: Ion Releasementioning

confidence: 99%

Physical/Mechanical and Antibacterial Properties of Orthodontic Adhesives Containing Calcium Phosphate and Nisin

Chanachai

Chaichana

Insee

et al. 2021

JFB

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Enamel demineralization around orthodontic adhesive is a common esthetic concern during orthodontic treatment. The aim of this study was to prepare orthodontic adhesives containing monocalcium phosphate monohydrate (MCPM) and nisin to enable mineralizing and antibacterial actions. The physicomechanical properties and the inhibition of S. mutans growth of the adhesives with added MCPM (5, 10 wt %) and nisin (5, 10 wt %) were examined. Transbond XT (Trans) was used as the commercial comparison. The adhesive containing a low level of MCPM showed significantly higher monomer conversion (42–62%) than Trans (38%) (p < 0.05). Materials with additives showed lower monomer conversion (p < 0.05), biaxial flexural strength (p < 0.05), and shear bond strength to enamel than those of a control. Additives increased water sorption and solubility of the experimental materials. The addition of MCPM encouraged Ca and P ion release, and the precipitation of calcium phosphate at the bonding interface. The growth of S. mutans in all the groups was comparable (p > 0.05). In conclusion, experimental orthodontic adhesives with additives showed comparable conversion but lesser mechanical properties than the commercial material. The materials showed no antibacterial action, but exhibited ion release and calcium phosphate precipitation. These properties may promote remineralization of the demineralized enamel.

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“…The degree of monomer conversion and fluoride release of both F1 and F2 were significantly lower than those of VB. F1 showed biaxial flexural strength comparable to VB, but higher strength than TC [23] . TheraCal LC showed the lowest temperature rise in the pulp chamber [24] .…”

Section: Effect On Pulp 321 Theracalmentioning

confidence: 88%

TheraCal as the material of choice for direct pulp treatment compared to two other materials: MTA and biodentine

Dominguez¹,

Martínez²,

Delgado³

et al. 2022

Int. J. Appl. Dent. Sci.

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Introduction: Direct pulp treatment is a procedure in which the exposed vital pulp is treated with a therapeutic material, it is sought to promote healing, maintain pulp vitality and protect the pulp. Objective: To prove that TheraCal is the material of choice as a coating for direct pulp treatment in terms of biocompatibility and cytotoxicity, solubility and clinical management, effects on the pulp, clinical and radiographic success in comparison with current materials used; MTA and Biodentine. Methodology: An electronic search was performed during September 2021 in the PubMed-MEDLINE database. Human or In vitro comparative studies evaluating biocompatibility, clinical and radiographic success were included. No restriction was applied to the date of publication. Case series and expert opinions were excluded. Keywords such as "Theracal", "direct pulp capping", "Biodentine", "MTA" and "vital pulp treatment" were used. Results: Only one article was found that discussed the toxic effects of TheraCal. TheraCal has very favorable effects on the pulp, as it could be observed to induce dentin formation, these effects are to some extent limited. The solubility of TheraCal is one of its strongest characteristics, and it is very useful in indirect pulp capping, but not very useful in direct pulp capping. In comparison with other materials, Theracal shows good results that are considerably successful, however, the MTA and Biodentine variants present better percentages and higher probabilities of success. Conclusion: Theracal cannot be considered as a first-choice material when performing direct pulp treatment.

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Monomer Conversion, Dimensional Stability, Biaxial Flexural Strength, Ion Release, and Cytotoxicity of Resin-Modified Glass Ionomer Cements Containing Methacrylate-Functionalized Polyacids and Spherical Pre-Reacted Glass Fillers

Cited by 12 publications

References 65 publications

Physical/mechanical and antibacterial properties of orthodontic adhesives containing Sr-bioactive glass nanoparticles, calcium phosphate, and andrographolide

Physical/mechanical and antibacterial properties of orthodontic adhesives containing Sr-bioactive glass nanoparticles, calcium phosphate, and andrographolide

Physical/Mechanical and Antibacterial Properties of Orthodontic Adhesives Containing Calcium Phosphate and Nisin

TheraCal as the material of choice for direct pulp treatment compared to two other materials: MTA and biodentine

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