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International Endodontic Journal Jun 2024Among numerous constituents of Panax ginseng, a constituent named Ginsenoside Rb1 (G-Rb1) has been studied to diminish inflammation associated with diseases. This study...
AIM
Among numerous constituents of Panax ginseng, a constituent named Ginsenoside Rb1 (G-Rb1) has been studied to diminish inflammation associated with diseases. This study investigated the anti-inflammatory properties of G-Rb1 on human dental pulp cells (hDPCs) exposed to lipopolysaccharide (LPS) and aimed to determine the underlying molecular mechanisms.
METHODOLOGY
The KEGG pathway analysis was performed after RNA sequencing in G-Rb1- and LPS-treated hDPCs. Reverse-transcription polymerase chain reaction (RT-PCR) and western blot analysis were used for the assessment of cell adhesion molecules and inflammatory cytokines. Statistical analysis was performed with one-way ANOVA and the Student-Newman-Keuls test.
RESULTS
G-Rb1 did not exhibit any cytotoxicity within the range of concentrations tested. However, it affected the levels of TNF-α, IL-6 and IL-8, as these showed reduced levels with exposure to LPS. Additionally, less mRNA and protein expressions of vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) were shown. With the presence of G-Rb1, decreased levels of PI3K/Akt, phosphorylated IκBα and p65 were also observed. Furthermore, phosphorylated ERK and JNK by LPS were diminished within 15, 30 and 60 min of G-Rb1 exposure; however, the expression of non-phosphorylated ERK and JNK remained unchanged.
CONCLUSIONS
G-Rb1 suppressed the LPS-induced increase of cell adhesion molecules and inflammatory cytokines, while also inhibiting PI3K/Akt, phosphorylation of NF-κB transcription factors, ERK and JNK of MAPK signalling in hDPCs.
Topics: Ginsenosides; Humans; Dental Pulp; Lipopolysaccharides; NF-kappa B; Proto-Oncogene Proteins c-akt; Phosphatidylinositol 3-Kinases; Signal Transduction; Inflammation; Cells, Cultured; MAP Kinase Signaling System; Cytokines; Blotting, Western
PubMed: 38436525
DOI: 10.1111/iej.14058 -
Nanoscale Sep 2023Oral diseases are usually caused by inflammation and bacterial infection. Reactive oxygen species (ROS), which come from both autologous inflammation tissue and...
Oral diseases are usually caused by inflammation and bacterial infection. Reactive oxygen species (ROS), which come from both autologous inflammation tissue and bacterial infection, play an important role in this process. Thus, the elimination of excessive intracellular ROS can be a promising strategy for anti-inflammatory treatment. With the rapid development of nanomedicines, nanozymes, which can maintain the intracellular redox balance and protect cells against oxidative damage, have shown great application prospects in the treatment of inflammation-related diseases. However, their performance in pulpitis and their related mechanisms have yet to be explored. Herein, we prepared dozens of metallic nanoparticles with core-shell structures, and among them, chromium nanoparticles (NanoCr) were selected for their great therapeutic potential for pulpitis disease. NanoCr showed a broad antibacterial spectrum and strong anti-inflammatory function. Antibacterial assays showed that NanoCr could effectively inhibit a variety of common pathogens of oral infection. experiments offered evidence of the multienzyme activity of NanoCr and its function in suppressing ROS-induced inflammation reactions. The experimental results show that NanoCr has optimal antibacterial and anti-inflammatory properties in cell models, showing great potential for the treatment of pulpitis. Therefore, the use of NanoCr could become a new therapeutic strategy for clinical pulpitis.
Topics: Humans; Pulpitis; Reactive Oxygen Species; Inflammation; Anti-Bacterial Agents; Chromium; Metal Nanoparticles
PubMed: 37606502
DOI: 10.1039/d3nr02930a -
Journal of Endodontics Oct 2023Endodontic infections are polymicrobial; however, investigating the role of bacterial species is critical because they may influence pathogenesis, the development of... (Review)
Review
INTRODUCTION
Endodontic infections are polymicrobial; however, investigating the role of bacterial species is critical because they may influence pathogenesis, the development of symptoms, or the persistence of disease. This systematic review aimed to determine the prevalence of Fusobacterium species and its association with different types of endodontic infections.
METHODS
MEDLINE (Ovid), PubMed, Scopus, Web of Science, and Cochrane Library databases were used as electronic databases to retrieve relevant studies. The studies were evaluated for eligibility criteria, and the certainty in evidence and risk of bias were evaluated using critical appraisal tools for prevalence studies from the Joanna Briggs Institute. Forty studies were selected for meta-analysis and statistically analyzed for the relationship between the prevalence of Fusobacterium species and both the presence of symptoms and the type of infections (primary vs secondary/persistent) using meta-regression analysis.
RESULTS
The prevalence of Fusobacterium spp. in endodontic infections ranged from 3%-100% (mean = 42.51%) in the 40 included studies. Calculated confidence intervals indicated that the presence of Fusobacterium spp. was not statistically associated with the presence of symptoms or with the type of infections (the set of 2 predictors was not significant; P < .05).
CONCLUSIONS
The prevalence of Fusobacterium infection, which was identified with molecular methods, was not significant for overall regression using both predictors (ie, symptoms [symptomatic vs asymptomatic] and types of infections [primary vs secondary/persistent]).
PubMed: 37611654
DOI: 10.1016/j.joen.2023.08.009 -
Frontiers in Oral Health 2023Symptomatic irreversible pulpitis (SIP) or symptomatic apical periodontitis (SAP) are two painful conditions often warranting emergency treatment. The most common... (Review)
Review
Pain after emergency treatments of symptomatic irreversible pulpitis and symptomatic apical periodontitis in the permanent dentition: a systematic review of randomized clinical trials.
BACKGROUND
Symptomatic irreversible pulpitis (SIP) or symptomatic apical periodontitis (SAP) are two painful conditions often warranting emergency treatment. The most common emergency treatments supported by evidence are pulpotomy and pulpectomy and are normally performed under time-constrained circumstances. However, there is no strong evidence of which treatment suggested in literature a clinician can use to reduce endodontic pain effectively. Therefore, the aim of this systematic review is to investigate the present knowledge on postoperative pain related to the two types of emergency treatments available for treating SIP and SAP.
METHODS
Randomized controlled trials investigating postoperative pain after emergency treatments (pulpotomy and/or pulpectomy) on permanent dentition with signs and symptoms of SIP and/or SAP were searched in three major databases from 1978 until 2022. Risk of bias was assessed with Cochrane's tool.
RESULTS
Only five studies fulfilled the inclusion criteria. The included studies indicated that pulpotomy and pulpectomy are both suitable treatment options for SAP and SIP, as they provide sufficient alleviation of pain in permanent dentition. However, inconsistent results were found between the included trials on which emergency treatment is more effective in reducing pain. Cochrane's tool revealed that the studies had a low risk of bias. Limitations found in the design of the included randomized control trials decreased the level of evidence. None of the included studies accounted for essential confounding variables, such as factors affecting pain (including the psychological aspects). Moreover, possible non-odontogenic pain was not assessed, and therefore, it was not excluded; hence, affecting the internal validity of the studies.
CONCLUSION
There are controversies within the available randomized control trials on which treatment is most effective in reducing emergency pain. This could be due to some weaknesses in the design of the clinical trials. Thus, further well-designed studies are warranted to draw conclusions on which emergency treatment is more effective in reducing pain.
SYSTEMATIC REVIEW REGISTRATION
PROSPERO (CRD42023422282).
PubMed: 37920592
DOI: 10.3389/froh.2023.1147884 -
Medicine May 2024Compared with traditional root canal therapy (RCT), vital pulp therapy (VPT) is a personalized and minimally invasive method for the treatment of pulpitis caused by... (Randomized Controlled Trial)
Randomized Controlled Trial
BACKGROUND
Compared with traditional root canal therapy (RCT), vital pulp therapy (VPT) is a personalized and minimally invasive method for the treatment of pulpitis caused by dental caries. However, there are still no clear guidelines for VPT because high-quality randomized clinical trials are scarce. This prospective cohort study evaluated the clinical efficacy of VPT with the light-curable calcium silicate-based material TheraCal LC (TH) and bioceramic material iRoot BP Plus (BP) in reversible and irreversible pulpitis permanent teeth with carious exposures.
METHODS
115 teeth with reversible or irreversible pulpitis caused by deep care were randomly divided into 2 groups. TheraCal LC and iRoot BP Plus were used for the pulp capping. Direct pulp capping (DPC), partial pulpotomy (PP) and full pulpotomy (FP) were performed based on observation of the exposed pulp. Postoperative discomforts were enquired and recorded via follow-up phone calls. Clinical and radiographic evaluations were performed 3, 6, and 12 months postoperatively.
RESULTS
The overall clinical success rate in the first year was 90.4% (47/52) in both groups. The TH group required less operating time, showed lower levels of pain, and had shorter pain duration post-operative (P < .001). According to the binary logistic regression model, preoperative pain duration was significantly correlated with the prognosis of VPT (P = .011).
CONCLUSION
VPT with TheraCal LC and iRoot BP Plus in pulpitis permanent carious teeth both achieved good clinical outcomes, and TheraCal LC can be easily operated for clinical use. Preoperative pain duration of the affected tooth might have a significant correlation with the prognosis of VPT.
Topics: Humans; Pulpitis; Calcium Compounds; Silicates; Female; Male; Pulpotomy; Adult; Prospective Studies; Dental Pulp Capping; Dental Caries; Young Adult; Treatment Outcome; Adolescent; Middle Aged; Drug Combinations; Calcium Hydroxide; Aluminum Compounds; Oxides
PubMed: 38701294
DOI: 10.1097/MD.0000000000038015 -
Journal of the Indian Society of... Oct 2023Inferior alveolar nerve block (IANB) is considered the cornerstone in achieving anesthesia for mandibular molars. However, failure of routine lignocaine IANB to achieve... (Randomized Controlled Trial)
Randomized Controlled Trial
CONTEXT
Inferior alveolar nerve block (IANB) is considered the cornerstone in achieving anesthesia for mandibular molars. However, failure of routine lignocaine IANB to achieve profound anesthesia of the pulp has been reported in patients with molar incisor hypomineralization (MIH). Articaine 4% with epinephrine 1:100,000 has proven to provide total pain relief during most dental procedures.
AIMS
This study aimed to assess and compare the pain perception level in children using Visual Analog Scale (VAS) during root canal treatment after administering 4% articaine buccal infiltration (BI), 4% articaine IANB, and 2% lignocaine IANB.
SUBJECTS AND METHODS
Twenty-seven children aged 8-12 years, requiring root canal treatment of mandibular first permanent molars with MIH were randomly allocated into three groups - 4% articaine (1:100,000 epinephrine) BI, 4% articaine (1:100,000 epinephrine) IANB, and 2% lignocaine IANB. The efficacy of the anesthetic was determined by rating the pain perception of the child using a VAS.
STATISTICAL ANALYSIS USED
The scores marked by the children on the VAS were recorded and were statistically analyzed. Data were entered into Microsoft excel data sheet and were analyzed using SPSS for Windows version 17.0.
RESULTS
Patients anesthetized with 4% articaine IANB presented lesser pain scores compared to IANB with 2% lidocaine and 4% articaine BI on access opening and instrumentation of the root canals.
CONCLUSION
4% articaine IANB has better anesthetic efficacy than 4% articaine BI and 2% lignocaine IANB in anesthetising mandibular first permanent molars with MIH.
Topics: Child; Humans; Carticaine; Lidocaine; Anesthetics, Local; Dental Pulp Cavity; Molar Hypomineralization; Pulpitis; Nerve Block; Epinephrine; Anesthesia, Dental; Pain; Mandibular Nerve; Double-Blind Method
PubMed: 38235818
DOI: 10.4103/jisppd.jisppd_375_23 -
Journal of Endodontics Dec 2023In situ assessments of neurotrophic factors and their associated molecular partners have not been explored to date, particularly in humans. The present investigation...
INTRODUCTION
In situ assessments of neurotrophic factors and their associated molecular partners have not been explored to date, particularly in humans. The present investigation aimed to explore the expressional dysregulation of neurotrophic factors (nerve growth factor [NGF], brain derived neurotrophic factor [BDNF], and NT4/5), their receptors (TrkA and TrkB), and their modulators (USP36 and Nedd4-2) directly in irreversibly inflamed human pulp tissues.
METHODS
Forty samples each of healthy and irreversibly inflamed pulp were extirpated for the study. Immunohistochemical examinations were carried out for the anatomic changes and expression of neurotrophic factors and partner proteins. Expression was digitally quantified using the IHC profiler module of ImageJ and deduced as optical density. Statistical analyses were carried out by GraphPad Prism.
RESULTS
Decrease in nuclear and vessel diameters was observed in irreversibly inflamed pulp tissues. NGF and BDNF were found to be significantly upregulated in symptomatic irreversible pulpitis (SIP), whereas no significant difference was observed in the expression of TrkA and TrkB. Expression of Nedd4-2, USP36, and TrkA was found positively correlated with the NGF in healthy pulp tissues. However, in SIP, positive correlation was only observed between the expression of USP36 and NGF. Among the ligands, BDNF expression was found positively correlated with NGF in healthy pulp but not with NT4/5. In the case of SIP, no correlation was observed between any neurotrophic factors.
CONCLUSIONS
Upregulation of NGF, BDNF, USP36 and Nedd4-2 in SIP indicates dysregulation in the molecular events underlying the disease biology and could be exploited as potential markers for the disease diagnosis.
Topics: Humans; Brain-Derived Neurotrophic Factor; Receptors, Nerve Growth Factor; Nerve Growth Factor; Pulpitis; Receptor Protein-Tyrosine Kinases; Ubiquitin Thiolesterase
PubMed: 37660765
DOI: 10.1016/j.joen.2023.08.017 -
European Endodontic Journal Aug 2023To investigate the concentration of Matrix metalloproteinases-9 (MMP-9) and Tumor necroses fac- tor-alpha (TNF- α) in pulpal blood at various stages of pulpal...
OBJECTIVE
To investigate the concentration of Matrix metalloproteinases-9 (MMP-9) and Tumor necroses fac- tor-alpha (TNF- α) in pulpal blood at various stages of pulpal inflammation in diabetics and to establish the relationship between these two biomarkers.
METHODS
77 patients, each having a tooth with pulpal exposure due to caries presenting with distinct stages of pulpitis were grouped into 2 main study groups as based on the HbA1c Levels-Group 1: Non-Diabetics (Control Group) (HbA1c < 5.6%) and Group 2: Type 2 Diabetics (Experimental Group) (HbA1c>6.5%; Random Plasma Glucose > 200) and diabetes mellitus with less than 10-year history. Depending on the radiological and clinical diagnosis, these two groups were again sub-divided into 2 subgroups: Sub-group A: Tooth with Symptomatic Irreversible Pulpitis. Sub Group B: Tooth with Reversible Pulpitis. Thus, for comparison purposes, a total of 4 sub-divisions were formed: Sub-group 1A- Non-Diabetic, Symtomatic Irreversible Pulpitis, Sub- group 1B: Non-Diabetic, Reversible Pulpitis, Sub-group 2A: Diabetic, Symptomatic Irreversible Pulpitis, Sub- group 2B: Diabetic, Reversible Pulpitis. Blood sample was collected from pulp chamber after partial pulpo- tomy was done. The total levels of MMP-9 and TNF-α were assessed by enzyme linked immunosorbent assays (ELISA). Inter-group comparison in levels of MMP-9 and TNF- α were conducted using the Kruskal Wallis test and pairwise comparison was done Mann-Whitney U test.
RESULTS
The inter-group comparison in levels of MMP-9 and TNF- α were conducted using the Kruskal Wallis test and pairwise comparison was done using Mann-Whitney U test. Pearson correlations were conducted in order to investigate correlations between the paired TNF-α and MMP-9 values and also their correlation with the blood sugar levels within the pulp diagnosis groups. MMP-9 and TNF-α levels were significantly higher (p<0.005) in irreversible pulpits than reversible pulpits and also in Type-2 diabetics than non-diabetics. High- est level of MMP-9 and TNF-α was found in Group 2A (Diabetic, symptomaticirreversible pulpitis) and lowest in Group 1B (Non-Diabetic, reversible pulpitis). There exists a very high significant positive correlation between MMP-9 and TNF-α (p<0.005).
CONCLUSION
These findings show that the inflammatory mediators MMP-9 and TNF-α are significantly in- creased in pulpal blood samples of diabetic patients. Also, in diabetic patients diagnosed with reversible pul- pitis, higher levels of inflammatory pulpal biomarkers were reported that could compromise the success of Vital Pulp Therapy (VPT) and may necessitate endodontic intervention. MMP-9 and TNF- α were reported to have a positive correlation. (EEJ-2023-01-04).
Topics: Humans; Biomarkers; Cross-Sectional Studies; Diabetes Mellitus; Glycated Hemoglobin; Inflammation; Matrix Metalloproteinase 9; Pulpitis; Tumor Necrosis Factor-alpha
PubMed: 38219033
DOI: 10.14744/eej.2023.41736 -
International Endodontic Journal Feb 2024Guanylate-binding protein 5 (GBP5) is an interferon (IFN)-inducible GTPase that plays a crucial role in the cell-autonomous immune response against microbial infections....
AIM
Guanylate-binding protein 5 (GBP5) is an interferon (IFN)-inducible GTPase that plays a crucial role in the cell-autonomous immune response against microbial infections. In this study, we investigated the immunoregulatory role of GBP5 in the pathogenesis of dental pulpitis.
METHODOLOGY
Gene-set enrichment analysis (GSEA) was utilized to evaluate the IFN-γ signalling pathway, and the differential expression of GBP mRNA in normal versus inflamed dental pulp tissues was screened, based on Gene Expression Omnibus (GEO) datasets associated with pulpitis. Both normal pulp tissues and inflamed pulp tissues were used for experiments. The expression of IFNs and GBPs was determined by qRT-PCR. Immunoblotting and double immunofluorescence were performed to examine the cellular localization of GBP5 in dental pulp tissues. For the functional studies, IFN-γ priming or lentivirus vector-delivered shRNA was used to, respectively, overexpress or knock down endogenous GBP5 expression in human dental pulp stem cells (HDPSCs). Subsequently, LPS was used to stimulate HDPSCs (overexpressing or with knocked-down GBP5) to establish an in vitro model of inflammation. qRT-PCR and ELISA were employed to examine the expression of proinflammatory cytokines (IL-6, IL-8 and IL-1β) and cyclooxygenase 2 (COX2). Every experiment has three times of biological replicates and three technical replicates, respectively. Statistical analysis was performed using the Student's t-test and one-way ANOVA, and a p-value of <.05 was considered statistically significant.
RESULTS
GSEA analysis based on the GEO dataset revealed a significant activation of the IFN-γ signalling pathway in the human pulpitis group. Among the human GBPs evaluated, GBP5 was selectively upregulated in inflamed dental pulp tissues and predominantly expressed in dental pulp cells. In vitro experiments demonstrated that IFN-γ robustly induced the expression of GBP5 in HDPSCs. Knockdown of GBP5 expression in HDPSCs significantly amplified the LPS-induced upregulation of inflammatory mediators (IL-6, IL-8, IL-1β and COX2) both with and without IFN-γ priming.
CONCLUSION
Our findings demonstrated that GBP5 partook in the pathogenesis of dental pulpitis. The involvement of GBP5 in pulpitis appeared to coordinate the regulation of inflammatory cytokines. Knockdown of GBP5 contributed to the exacerbation of LPS-mediated inflammation.
Topics: Humans; Cyclooxygenase 2; Cytokines; Dental Pulp; Inflammation; Interleukin-6; Interleukin-8; Lipopolysaccharides; Pulpitis
PubMed: 38050666
DOI: 10.1111/iej.14006 -
Alternative Therapies in Health and... Dec 2023Acute pulpitis poses a significant clinical challenge. Traditional root canal treatment has been a standard approach, and the incorporation of adjunctive therapies, such...
BACKGROUND
Acute pulpitis poses a significant clinical challenge. Traditional root canal treatment has been a standard approach, and the incorporation of adjunctive therapies, such as eugenol cement, presents a potential avenue for enhanced efficacy and reduced complications.
OBJECTIVE
This study aimed to assess the clinical efficacy of root canal treatment combined with eugenol cement for acute pulpitis and its impact on inflammatory factor levels.
DESIGN
The study employed a parallel, randomized, controlled, experimental design.
SETTING
The research was conducted at Suzhou Ninth People's Hospital.
PARTICIPANTS
A total of 92 patients diagnosed with acute pulpitis and seeking treatment at our hospital between August 2020 and November 2021 were included in the study.
INTERVENTIONS
Participants were randomly assigned to two groups with 46 patients in each group: the control group receiving traditional root canal treatment and the experimental group receiving root canal treatment combined with eugenol cement.
PRIMARY OUTCOME MEASURES
The primary outcomes assessed included (1) treatment efficiency, (2) masticatory function, (3) complications, and levels of inflammatory factors.
RESULTS
In the study, root canal treatment combined with eugenol cement showed superior efficacy (95.7% vs. 76.1%, P < .05) compared to root canal treatment alone. After one month, both groups exhibited reduced bleeding and gingival indices, with a more significant reduction in the experimental group (P < .05). The combined treatment significantly improved masticatory efficiency and occlusal strength (P < .05). The experimental group had a lower complication rate (6.5% vs. 26.1%, P < .05) and reduced inflammatory markers (IL-6, IL-8, TNF-α, LTB4) compared to the control group (P < .05).
CONCLUSIONS
Root canal treatment plus eugenol cement enhances masticatory function, reduces complications and inflammatory response in patients with acute pulpitis, alleviates dental pain and looseness, and mitigates inflammatory responses with fewer adverse effects.
PubMed: 38295310
DOI: No ID Found