The effect of dental caries and restorative biomaterials on IL-1 β and TNF-α levels in the gingival crevicular fluid

© 2021 Inst. Sci. inf., Univ. Defence in Belgrade. All rights reserved. Background/Aim. In the spirit of personalized medicine, de-termining caries biomarkers in the saliva and gingival crevicular fluid (GCF) attracts great attention in the current dental re-search. The concentration of GCF cytokines is illustrative in depicting the processes in tooth structures. Their relevance must be inspected with aspects of tooth position and caries le-sion level. Different impacts of dental restoration materials on GCF IL-1β and TNF-α could be used as a parameter for esti-mating local inflammation. This paper aimed to estimate the concentrations of the proinflammatory cytokines (IL-1β and TNF-α) in the GCF and to correlate them with caries exten-sion, tooth position, and different restorative biomaterials. Methods. GCF samples were collected from 90 periodontally healthy patients demonstrating at least one tooth with proximal caries and one intact tooth, at the baseline, 7 and 30-days post-treatment. The biomarkers' profile was investigated in relation to different levels of caries extension (superficial, pulpitis, gan-grenous, root affection), defect size, and restorative biomaterial. Results. Before therapy, caries level was significantly associat-ed with GCF IL-1β concentration, demonstrating the lowest level in gangrenous (C4) and superficial caries (C2). Thirty days after therapy, root affection (C5) was characterized by the high-est IL-1β concentration. Different dental fillings showed vari-ous GCF cytokine changes. CPC induced a significant IL-1β increase in more than 70% of treated patients. Caries lesion size was insignificantly associated with GCF levels of these proin-flammatory cytokines, where larger defects were followed by an average cytokine increase. Considering the tooth position be-fore therapy, IL-1β had the highest level in GCF samples from caries-affected canines and second molars, while TNF-α showed the highest levels from canines GCF. Dental restora-tion induced cytokine increase in canines (IL-1β and TNF-α), 1st and 2nd molars GCF (IL-1β). Conclusion. Inflammation intensity of tooth structures was directly reflected in IL-1β and TNF-α concentrations. Dental restoration significantly affects IL-1β and TNF-α levels, depending on the used dental filling-type material. The profile of these cytokines varied in GCF samples of the tooth with different anatomical positions, where canines and molars demonstrated the highest level. An increase of these proinflammatory cytokines in the absence of any symptomatic manifestation of the inflammatory response can be considered as a possible tooth reparation parameter

Estimating the Effects of Dental Caries and Its Restorative Treatment on Periodontal Inflammatory and Oxidative Status: A Short Controlled Longitudinal Study

Dental caries and periodontitis are among the most common health conditions that are currently recognized as growing socio-economic problems relating to their increasing prevalence, negative socio-economic impact, and harmful effects on systemic health. So far, the exact effects of caries and standard restorative materials on periodontal inflammatory and oxidative status are not established. The present study aimed to investigate the effect of caries and its restoration using standard temporary and permanent filling materials on a panel of 16 inflammatory and oxidative markers in gingival crevicular fluid (GCF) of periodontally healthy individuals, 7 (D7) and 30 (D30) days post-restoration, while the intact teeth represented the control. One hundred ninety systemically and periodontally healthy patients with occlusal caries underwent standard cavity preparation and restorations with one of six standard temporary or permanent restorative material according to indication and randomization scheme. Interleukin (IL)-2, IFN- γ, IL-12, IL-17A, IL-13, IL-9, IL-10, IL-6, IL-5, IL-4, IL-22, TNF-α, IL1- β, thiobarbituric acid reactive substances, superoxide dismutase, and reduced form of glutathione were measured in GCF samples by flowcytometry and spectrophotometry in aid of commercial diagnostic assays. Caries affected teeth exhibited significantly increased IL-1 β, IL-17, IL-22, and TBARS and decreased IL-9 concentrations compared to healthy controls. Treatment generally resulted in an increased antioxidant capacity with exception of zinc-polycarboxylate cement showing distinctive inflammatory pattern. Comparison of inflammatory and oxidative profiles in temporary and permanent restorations showed material-specific patterning which was particularly expressed in temporary materials plausibly related to greater caries extension. Caries affected teeth exhibited a balanced inflammatory pattern in GCF, with a general tendency of homeostatic re-establishment following treatment. Restorative materials did not provide specific pathological effects, although some material groups did exhibit significantly elevated levels of inflammatory and oxidative markers compared to healthy controls, while the material-specific patterning was observed as well