Notes

Antioxidising Task, α-Glucosidase Hang-up as well as UHPLC-ESI-MS/MS User profile involving Shmar (Arbutus pavarii Pamp).
methylene blue photosensitizer for PDT, compromised adhesive integrity applied on DD.
This systematic review documents the up-to-date evidence on the efficacy of photodynamic therapy (PDT) on the push-out bond strength of fiber posts cemented to root dentin.

The focused PICO question was "What impact does PDT have on the push-out bond strength of fiber posts cemented to root dentin?" This systematic review followed the guidelines and recommendations reported in the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines chart. An electronic search was performed in MEDLINE/PubMed, SCOPUS, Web of Science, and Embase from January 1980 up to and including January 2020. Heterogeneity was calculated for push-out bond strength by means of the Chi-square test and I
statistics. For meta-analyses, if the I
was higher than 50 %, a random effects model was used, otherwise a fixed effects model for I
≤50 % was applied. A p-value <0.05 was set for significant heterogeneity. Forest plots were computed reporting standard mean differences (SMD) of outcomes and 95 % confidence intervals (CI).

In total, ten studies were included, all of wich demonstrated medium risk of bias. All studies tested the push-out bond strength by means of a universal testing machine with applying a load ranging between 0.5 and 1 mm/min speed. Of the 10 studies, nine (90 %) indicated that PDT had no effect on push-out bond strength of fiber posts to root dentin. Only one study indicated that PDT significantly improved the bond strength when compared with other control groups. The overall mean difference for push out bond strength showed no statistically significant difference between PDT and the control group (SMD = -1.11 [-3.25, 1.02], Z=-1.02, p = 0.305).

This systematic review concludes that PDT has no effect on improving the push-out bond strength of fiber posts to root dentin.
This systematic review concludes that PDT has no effect on improving the push-out bond strength of fiber posts to root dentin.
The aim of the present randomized controlled clinical trial was to evaluate the efficacy of photodynamic therapy (PDT) on halitosis in adolescent patients undergoing fixed orthodontic treatment.

Forty-five adolescents with halitosis undergoing orthodontic treatment were equally randomized into three groups Group - I provision of treatment through PDT on dorsum of tongue; Group - II provision of treatment with the help of tongue scrappers (TS); Group - III provision of treatment with the help of TS and adjunctive PDT. Presence of halitosis confirmed on the basis of gas chromatography and estimation of oral malodour with a cysteine challenge and H
S values recorded ≥112 parts per billion (ppb). A portable device Oral Chroma™ was used for performing breath analysis. A total of 5 bacterial species including P. gingivalis, F. nucleatum, P. intermedia, T. find more forsythia and T. denticola were studied as the proportion of sites defined as having ≥1.0 × 10
bacterial cells.

The mean age of the participants in Groupadication of halitosis needs to be explored in further clinical trials. In addition, the cost of PDT and its potential side effects should not be disregarded.
PDT along with tongue scrapping showed effective immediate reduction of H2S concentration and reduction of oral pathogens in adolescent patients undergoing fixed orthodontic treatment with short-term follow up. Long-term evaluation and complete eradication of halitosis needs to be explored in further clinical trials. In addition, the cost of PDT and its potential side effects should not be disregarded.Although Seborrheic keratosis of the head is very common, giant seborrheic keratosis is rare. This condition should be distinguished from other skin malignant tumors by skin histopathological and immunohistochemistry. We report a case of a 61-year-old woman who presented with a large, dark-brown, well-demarcated plaque on the top of her head of seven years duration which then progressed rapidly for one year. Dermoscopy, histopathological examination and immunohistochemical examination were performed successively. The patient was diagnosed with seborrheic keratosis. She was treated with aminolevulinate photodynamic therapy (ALA-PDT). The lesion was reduced and thinned following treatment. Therefore, we believe that ALA-PDT is a choice for the treatment of giant seborrheic keratosis, especially in some special areas that affect appearance and function.Neutrophils, cells of the innate immune system, enter the mouth and release factors that are hypothesized to contribute to the degradation of tooth dentin, methacrylate resin composites, and adhesives at the restoration-tooth-dentin interface. The objectives were to characterize neutrophils' degradation towards resin composite, self-etch (SE) and total-etch (TE) adhesives, SE and TE resin-dentin interfaces and to identify proteins that could contribute to the degradation process. Neutrophils' degradation of cured resin composite, and SE and TE adhesives, was quantified by measuring the specific resin degradation by-product, bishydroxy-propoxy-phenyl-propane (bisHPPP), released after 30 days incubation of the materials with the cells. Neutrophils' degradative effect on resin-dentin interfaces was examined by recording the interfacial fracture toughness (FT), and surface analysis of the fracture mode following incubation of SE and TE miniature short-rod (mini-SR) specimens with the cells. Neutrophils increased degradation of polymerized resin composite, and TE adhesive, but not SE adhesive over 30 days (p less then 0.05). Incubation of SE and TE resin-dentin interfaces with neutrophils led to a reduction in FT over time (p less then 0.05). The effect was more pronounced for TE interfaces. Neutrophils also affected the fracture mode of SE and TE resin-dentin interfaces. Several proteins that could contribute to the degradative activity of neutrophils, including Neutrophil collagenase (MMP-8), Matrix metalloproteinase- 9 (MMP-9), Cathepsin G, Neutrophil- gelatinase associated lipocalin (NGAL) and Myeloperoxidase, were isolated. The ability of neutrophils to degrade resin, tooth dentin, and reduce the bond strength of resin-dentin interfaces suggest neutrophils' potential role in primary and recurrent caries and dental restoration failure.
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