Evaluation of the Surface Roughness of Bulk-Fill Composite Resins after Submission to Acidic and Abrasive Aggressions

Taraboanta, Ionut; Buhățel, Dan; Concită, Corina Alexandra Brînză; Andrian, Sorin; Nica, Irina; Tărăboanță-Gamen, Andra Claudia; Brânzan, Răzvan; Stoleriu, Simona

doi:10.3390/biomedicines10051008

Cited by 7 publications

(6 citation statements)

References 32 publications

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“…Moreover, the tested universal adhesive (Single Bond Universal Adhesive, 3M-ESPE) contains MDP and HEMA, which may result in incompatibility with chlorhexidine and sensitivity to pulpal pressure simulation [ 5 ]. 10-MDP (10-Methacryloyloxidecyl dihydrogen phosphate) can form a chemical bond with the hydroxyapatite calcium around the collagen fibers [ 40 , 43 , 44 ]. Chlorhexidine’s reaction with dentinal calcium results in lower levels of calcium available for binding with 10-MDP; therefore, the adhesive cannot form an adequate bond with the tooth structures [ 40 , 45 ].…”

Section: Discussionmentioning

confidence: 99%

The Influence of Chlorhexidine Gluconate Dentine Pre-Treatment on Adhesive Interface and Marginal Sealing

et al. 2023

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Background and Objectives: The aim of this in vitro study was to evaluate the combined effect of a 2% chlorhexidine aqueous solution and a universal adhesive system applied in self-etch and etch-and-rinse strategies on the composite resin–dentin interface. Materials and Methods: Class V cavities were prepared on the facial and lingual surfaces of forty caries-free molars extracted for orthodontic reasons. The samples were randomly divided into two groups corresponding to the used etching protocol: I—etch-and-rinse; II—self-etch. In each tooth, one cavity was assigned for the control subgroups -IA (n = 20) and IIA (n = 20)—adhesive only, and the opposite cavity was pretreated with a 2% chlorhexidine solution—Gluco CHeX Cerkamed—subgroups IB (n = 20) and IIB (n = 20). Both sets of groups were restored using a universal adhesive system (Single Bond Universal Adhesive, 3M-ESPE) and a bulk-fill composite resin (Filtek One Bulk Fill Restorative, 3M-ESPE). The roots and the pulp tissue were then removed, and a needle connected to a perfusor with 100 mL saline solution was used for pulp pressure simulation with a hydrostatic pressure of 20 cm H2O. Cariogenic attack was simulated using a demineralizing solution for 3 days at a constant temperature of 25 °C. The teeth were then sectioned in a facial-lingual direction and the microleakages at the occlusal and cervical margins were registered and scored using an optical Carl-Zeiss AXIO Imager A1m microscope (Carl-Zeiss). The composite resin–dentin interface was analyzed using a SEM Vega Tescan LMH II. Statistical analysis was performed using the Kruskal–Wallis test with a significance level of p < 0.05. Results: Microleakage evaluation showed no significant differences among the study groups (p > 0.05). In subgroup IA, significant differences were recorded between occlusal and cervical margins (p < 0.05). Conclusions: Application of chlorhexidine on tooth substrate before using a universal bonding system in total etch or self-etch mode has no influence on the adhesive interface in the condition of cariogenic attack. The thickness of the adhesive resin layer seems to be less uniform when using chlorhexidine, but the morphological differences at the adhesive interface have no influence on the sealing capacity of the universal bonding system, regardless of the etching strategy.

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Section: Discussionmentioning

confidence: 99%

The Influence of Chlorhexidine Gluconate Dentine Pre-Treatment on Adhesive Interface and Marginal Sealing

et al. 2023

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“…The absorbed water may cause the degradation due to breakage of the chemical structure of the resin composites [ 37 ]. The gastric acid with high concentration of protonated protons (H + ) accelerates the sorption process, and exposure of the polymer-based restorative materials into the low pH solutions causes hydrolysis of ester bonds from dimethacrylate monomers (TEGDMA, Bis-GMA, and UDMA) that are present in the organic matrix [ 38 ]. As a result of this process, formation of alcohol and carboxylic acid molecules causes degradation of the resin composite, weakening the physical properties of the materials [ 39 ].…”

Section: Discussionmentioning

confidence: 99%

The Effect of Gastric Acid on the Surface Properties of Different Universal Composites: A SEM Study

2022

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The aim of this study is to compare surface roughness and microhardness changes of three monochromatic (Omnichroma, Vittra Unique, and Charisma Diamond One) and three universal shade (Neo Spectra ST, G-ænial A’CHORD, and Nova Compo C) resin composites after exposure to simulated gastric acid. A total of 144 disc-shaped specimens (24 discs of each composite resin) were prepared using plexiglass molds ( R = 5 mm × h = 2 mm ) for evaluation from each material. Specimens of each material were divided into two main groups for the evaluation of the microhardness and surface roughness and also two subgroups for 7- and 14-day exposures to simulated gastric acid. Initial microhardness and surface roughness measurements of all samples were measured before immersion (T1) followed by exposing the samples to simulated gastric acid for 7 days (T2) and 14 days (T3), and then, the microhardness and roughness measurements were repeated. Randomly selected specimens of each material for each of the time intervals (T1, T2, and T3) were evaluated with scanning electron microscopy (SEM). One-way ANOVA revealed that the surface roughness and hardness values of all tested composite resin restorative materials show no statistically significant difference for the initial (T1) value ( p > 0.05 ). Regarding the 7th day (T2) and 14th day (T3) surface roughness and microhardness value of all composites, there are statistically significant differences between the groups ( p < 0.05 ), while there was no statistically significant difference between the surface hardness reduction percentage between the time intervals ( p > 0.05 ). As a result of this in vitro study, increase in surface roughness and decrease in microhardness of the tested universal composite materials when exposed to simulated gastric acid were statistically significant.

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“…Secondary caries has frequently been observed in resin composite restorations [ 76 , 77 ], characterized by resin surface degradation which increased surface roughness and decreased hardness; at the same time, the unpolymerized monomer and dentin binding agent were eluted from composites, promoting the growth of cariogenic microorganisms [ 78 , 79 , 80 , 81 ].…”

Section: Nanoparticle Formulation and Ph-responsive Release Mechanismmentioning

confidence: 99%

pH-Responsive Biomaterials for the Treatment of Dental Caries—A Focussed and Critical Review

Vasilev

Zilm

2023

Pharmaceutics

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Dental caries is a common and costly multifactorial biofilm disease caused by cariogenic bacteria that ferment carbohydrates to lactic acid, demineralizing the inorganic component of teeth. Therefore, low pH (pH 4.5) is a characteristic signal of the localised carious environment, compared to a healthy oral pH range (6.8 to 7.4). The development of pH-responsive delivery systems that release antibacterial agents in response to low pH has gained attention as a targeted therapy for dental caries. Release is triggered by high levels of acidogenic species and their reduction may select for the establishment of health-associated biofilm communities. Moreover, drug efficacy can be amplified by the modification of the delivery system to target adhesion to the plaque biofilm to extend the retention time of antimicrobial agents in the oral cavity. In this review, recent developments of different pH-responsive nanocarriers and their biofilm targeting mechanisms are discussed. This review critically discusses the current state of the art and innovations in the development and use of smart delivery materials for dental caries treatment. The authors’ views for the future of the field are also presented.

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Evaluation of the Surface Roughness of Bulk-Fill Composite Resins after Submission to Acidic and Abrasive Aggressions

Cited by 7 publications

References 32 publications

The Influence of Chlorhexidine Gluconate Dentine Pre-Treatment on Adhesive Interface and Marginal Sealing

The Influence of Chlorhexidine Gluconate Dentine Pre-Treatment on Adhesive Interface and Marginal Sealing

The Effect of Gastric Acid on the Surface Properties of Different Universal Composites: A SEM Study

pH-Responsive Biomaterials for the Treatment of Dental Caries—A Focussed and Critical Review

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