Abstract Aim: Polymorphisms in the COMT gene can alter enzymatic functions, raising levels of endogenous catecholamines, which stimulates beta-adrenergic receptors related to pain. This study aimed to evaluate whether a polymorphism in the COMT gene (rs4818) is associated with dental pain in children. Methodology: A cross-sectional study was conducted with a representative sample of 731 pairs of children and parents randomly selected from a population-based sample of eight-year-old children. Reports of dental pain was evaluated using a question directed at the parents and self-reported pain using the Faces Pain Scale – Revised. Dental caries experience was determined using the Decayed, Missing, and Filled Teeth (DMFT) index. For genetic analysis, DNA was obtained from oral mucosa epithelial cells of 352 children randomly selected from the initial sample. Results: Children with the CC genotype had higher odds of reporting moderate to intense pain than those with the GG genotype (OR=3.60; 95% CI=0.80–16.20; p=0.03). These same children had greater odds of parental reports of pain (OR=1.93; 95% CI=0.91-4.08; p=0.02). Moreover, lower schooling of parents/guardians and caries experience in the primary dentition were significantly associated with greater odds of a parental report of dental pain (OR=2.06; 95% CI=1.47–2.91; p<0.001; OR=6.26; 95% CI=4.46–8.78; p<0.001). Conclusions: The rs4818 polymorphism of the COMT gene is associated with dental pain. Children with the C allele are more likely to report higher levels of pain. Clinical Relevance: Even though the experience of pain is subjective and multifactorial, this study raises the hypothesis that there is a genetic predisposition to dental pain that should be considered in clinical practice. Aim functions catecholamines betaadrenergic beta adrenergic rs (rs4818 Methodology crosssectional cross sectional 73 populationbased population based eightyearold eight year old selfreported self reported Revised Decayed Missing DMFT (DMFT index analysis 35 Results OR=3.60 OR360 OR 3 60 (OR=3.60 95 CI=0.80–16.20 CI0801620 CI 0 80 16 20 p=0.03. p003 p p=0.03 . 03 p=0.03) OR=1.93 OR193 1 93 (OR=1.93 CI=0.914.08 CI091408 CI=0.91 4.08 91 4 08 CI=0.91-4.08 p=0.02. p002 p=0.02 02 p=0.02) Moreover parentsguardians guardians OR=2.06 OR206 2 06 (OR=2.06 CI=1.47–2.91 CI147291 47 p<0.001 p0001 001 OR=6.26 OR626 6 26 CI=4.46–8.78 CI446878 46 8 78 p<0.001. p<0.001) Conclusions rs481 Relevance multifactorial practice (rs481 7 OR=3.6 OR36 (OR=3.6 9 CI=0.80–16.2 CI080162 p00 p=0.0 OR=1.9 OR19 (OR=1.9 914 CI=0.914.0 CI09140 CI091 CI=0.9 408 4.0 CI=0.91-4.0 OR=2.0 OR20 (OR=2.0 CI=1.47–2.9 CI14729 p<0.00 p000 00 OR=6.2 OR62 CI=4.46–8.7 CI44687 rs48 (rs48 OR=3. OR3 (OR=3. CI=0.80–16. CI08016 p0 p=0. OR=1. OR1 (OR=1. CI=0.914. CI0914 CI09 CI=0. 40 4. CI=0.91-4. OR=2. OR2 (OR=2. CI=1.47–2. CI1472 p<0.0 OR=6. OR6 CI=4.46–8. CI4468 rs4 (rs4 OR=3 (OR=3 CI=0.80–16 CI0801 p=0 OR=1 (OR=1 CI=0.914 CI0 CI=0 CI=0.91-4 OR=2 (OR=2 CI=1.47–2 CI147 p<0. OR=6 CI=4.46–8 CI446 (rs OR= (OR= CI=0.80–1 CI080 p= CI= CI=0.91- CI=1.47– CI14 p<0 CI=4.46– CI44 (OR CI=0.80– CI08 CI=1.47 CI1 p< CI=4.46 CI4 CI=0.80 CI=1.4 CI=4.4 CI=0.8 CI=1. CI=4. CI=1 CI=4

Abstract Objective This retrospective study aimed to analyze the clinical efficacy of two regenerative surgical methods — Bio-Oss granules combined with barrier membranes and Bio-Oss Collagen alone — and to help clinicians achieve better periodontal regeneration outcomes in the specific periodontal condition. Methodology Patients who underwent periodontal regeneration surgery from January 2018 to April 2022 were retrospectively screened, and their clinical and radiographic outcomes at 6 months postoperatively were analyzed. The probing depth (PD), clinical attachment level (CAL), bleeding on probing (BOP), gingival recession (GR), distance from the cemento-enamel junction to the bottom of the bone defect (CEJ-BD), and depth of intrabony defects (INFRA) were recorded before the operation (T0) and 6 months after it (T1), and subsequently compared. Results In total, 143 patients were included — 77 were placed in the Bio-Oss group and 66 were placed in the Bio-Oss Collagen group. All indicators, including PD and CAL at T1, showed significant differences compared to baseline, for both groups (P<0.001). PD reduction was greater in the group receiving the Bio-Oss Collagen treatment (P=0.042). Furthermore, in cases when the baseline PD range was 7-11 mm and the age range was 35-50 years, PD reduction was more significant for patients receiving the Bio-Oss Collagen treatment (P=0.031, 0.023). A linear regression analysis indicated that postoperative PD and CAL were positively correlated with baseline values, and that the efficacy tended to decrease with increasing age. Conclusion Both the use of Bio-Oss Collagen alone and the use of Bio-Oss granules combined with barrier membranes resulted in significant effects in the treatment of periodontal intrabony defects. The Bio-Oss Collagen treatment generated more improvements in PD than the Bio-Oss granules combined with barrier membranes, particularly within the baseline PD range of 7-11 mm and the 35-50 years age group. Additionally, age was the main factor influencing the effectiveness of regenerative surgery for intrabony defects: older individuals exhibited fewer improvements. BioOss Bio Oss condition 201 202 screened analyzed PD, , (PD) CAL, (CAL) BOP, BOP (BOP) GR, GR (GR) cementoenamel cemento enamel CEJBD, CEJBD CEJ BD (CEJ-BD) INFRA (INFRA T0 T (T0 T1 (T1) total 14 7 indicators P<0.001. P0001 P P<0.001 . 0 001 (P<0.001) P=0.042. P0042 P=0.042 042 (P=0.042) Furthermore 711 11 7-1 3550 35 50 35-5 P=0.031, P0031 031 (P=0.031 0.023. 0023 0.023 023 0.023) values Additionally 20 (PD (CAL (BOP (GR (CEJ-BD (T (T1 1 P000 P<0.00 00 (P<0.001 P004 P=0.04 04 (P=0.042 71 7- 355 3 5 35- P=0.031 P003 03 (P=0.03 002 0.02 02 2 P00 P<0.0 (P<0.00 P=0.0 (P=0.04 P=0.03 (P=0.0 0.0 P0 P<0. (P<0.0 P=0. (P=0. 0. P<0 (P<0. P=0 (P=0 P< (P<0 P= (P= (P< (P

Abstract During oral surgery and temporomandibular joint repositioning, pain hypersensitivity often occurs due to irritation or inflammation of the nerve endings in the orofacial region. Objective: This study aimed to investigate the effects of ECa 233, a Centella asiatica–standardized extract, on the development of mechanical hyperalgesia and allodynia induced by chronic constriction injury of the infraorbital nerve in mice. Methodology: The right infraorbital nerves of the mice were ligated. Oral carbamazepine (20 mg/kg) or ECa 233 (30, 100, or 300 mg/kg) was administered daily for 21 days. Von Frey and air-puff tests were performed on both sides of the whisker pad on days 0, 7, 14, and 21. Thereafter, the expression of purinergic receptor subtype 3 (P2X3) and voltage-gated sodium channel 1.7 (NaV1.7), a transmembrane protein, in the trigeminal ganglion and c-fos immunoreactivity-positive neurons in the trigeminal nucleus caudalis was assessed. Results: After 21 days of infraorbital nerve ligation, the mice showed allodynia- and hyperalgesia-like behavior, P2X3 and NaV1.7 were upregulated in the trigeminal ganglion, and nociceptive activity increased in the trigeminal nucleus caudalis. However, the oral administration of carbamazepine (20 mg/kg), ECa 233 (100 mg/kg), or ECa 233 (300 mg/kg) mitigated these effects. Nevertheless, ECa 233 failed to affect NaV1.7 protein expression. Conclusion: Carbamazepine and ECa 233 can prevent pain hypersensitivity in mice. Considering the side effects of the long-term use of carbamazepine, ECa 233 monotherapy or combined ECa 233 and carbamazepine therapy can be used as an alternative for regulating the development of hypersensitivity in trigeminal pain. However, further detailed clinical studies should be conducted to provide comprehensive information on the use of ECa 233. repositioning region Objective asiaticastandardized asiatica standardized extract Methodology ligated 20 (2 mg/kg mgkg mg kg 23 30, 30 (30 100 2 airpuff air puff 0 7 14 Thereafter PX P X (P2X3 voltagegated voltage gated 17 1 1. NaV1.7, NaV17 NaV , NaV1 (NaV1.7) cfos c fos immunoreactivitypositive immunoreactivity positive assessed Results ligation hyperalgesialike like behavior P2X NaV1. However mg/kg, (10 Nevertheless Conclusion longterm long term ( (3 10 (P2X (NaV1.7 (1 (NaV1. (NaV1 (NaV

Abstract Objectives This study aimed to analyze the cost-effectiveness of whitening toothpastes and at-home bleaching for the treatment of tooth discoloration. Methodology A cost-effectiveness economic analysis was conducted, and eight randomized clinical trials were selected based on the whitening agent product used: blue covarine dentifrices (BCD), hydrogen peroxide dentifrices (HPD), dentifrices without bleaching agents (CD, negative control), and 10% carbamide peroxide (CP10, positive control) for at-home bleaching. The consumer/patient perspective was adopted, macro-costing techniques were used and a decision tree model was performed considering the costs in the American and Brazilian markets. The color change evaluation (ΔE*ab) was used to calculate the effectiveness of tooth bleaching. A probabilistic analysis was performed using a Monte Carlo simulation and incremental cost-effectiveness ratios were obtained. Results CP10 resulted in the highest cost-effectiveness compared to the use of dentifrices in both markets. In Brazil, HPD was more cost-effective than BCD and CD. In the US, the increased costs of HPD and BCD did not generate any whitening benefit compared to CD. Conclusions CP10 was more cost-effective than BCD and HPD for tooth bleaching from the perspectives of the Brazilian and American markets. Decision-making should consider the use of CP10 for treating tooth discoloration. costeffectiveness cost athome at home discoloration conducted BCD, , (BCD) HPD, (HPD) CD, CD (CD control, control 10 CP10, CP (CP10 consumerpatient consumer patient adopted macrocosting macro costing markets ΔE*ab ΔEab ΔE ab (ΔE*ab obtained CP1 Brazil costeffective effective US Decisionmaking Decision making (BCD (HPD 1 (CP1 (CP

Abstract Objective: We aimed to investigate the regulatory effects of HMGB1/TLR4 signaling pathway on the expression of IL-10 and VEGF in human bone marrow mesenchymal stem cells. Methodology: Human JBMSCs were isolated and cultured. Then, HMGB1 was added into the JBMSCs culture medium, and the protein and mRNA expression levels of IL-10 and VEGF were assessed. Moreover, cells were pretreated with a specific TLR4 inhibitor (TAK-242), and the expression changes of IL-10 and VEGF were compared. Results: Compared with the control group, exposure to HMGB1 in human JBMSCs up-regulated TLR4, IL-10, and VEGF secretion at both protein and mRNA levels (P<0. 05). In addition, the increased expression of IL-10 and VEGF could be restrained in TAK-242 group compared with the HMGB1 group (P<0.05). Conclusions: The results indicated that HMGB1 activate TLR4 signaling pathway in Human JBMSCs, which plays a regulatory role in cytokines expression. Objective HMGB1TLR4 HMGBTLR HMGB TLR HMGB1/TLR IL10 IL 10 IL-1 Methodology cultured Then medium assessed Moreover TAK242, TAK242 TAK 242 , (TAK-242) Results upregulated up regulated IL10, 10, P<0. P0 P 0 (P<0 05. 05 . 05) addition TAK-24 P<0.05. P005 P<0.05 (P<0.05) Conclusions HMGB1TLR IL1 1 IL- TAK24 24 (TAK-242 P<0 (P< TAK-2 P00 P<0.0 (P<0.05 TAK2 2 (TAK-24 P< (P TAK- (P<0.0 (TAK-2 (TAK- (TAK

Abstract Objective: The aim of this population-based retrospective study was to compare the osteogenic effect of newly formed bone after maxillary sinus floor elevation (MSFE) and simultaneous implantation with or without bone grafts by quantitatively analyzing trabecular bone parameters. Methodology: A total of 100 patients with missing posterior maxillary teeth who required MSFE and implantation were included in this study. Patients were divided into two groups: the non-graft group (n=50) and the graft group (n=50). Radiographic parameters were measured using cone beam computed tomography (CBCT), and the quality of newly formed bone was analyzed by assessing trabecular bone parameters using CTAn (CTAnalyzer, SkyScan, Antwerp, Belgium) software. Results: In the selected regions of interest, the non-graft group showed greater bone volume/total volume (BV/TV), bone surface/total volume (BS/TV), trabecular number (Tb. N), and trabecular thickness (Tb. Th) than the graft group (p<0.001). The non-graft group showed lower trabecular separation (Tb. Sp) than the graft group (p<0.001). The incidence of perforation and bleeding was higher in the graft group than in the non-graft group (p<0.001), but infection did not significantly differ between groups (p>0.05). Compared to the graft group, the non-graft group showed lower postoperative bone height, gained bone height and apical bone height (p<0.001). Conclusion: MSFE with and without bone grafts can significantly improve bone formation. In MSFE, the use of bone grafts hinders the formation of good quality bone, whereas the absence of bone grafts can generate good bone quality and limited bone mass. Objective populationbased population based (MSFE Methodology 10 nongraft non n=50 n50 n 50 (n=50 n=50. . CBCT, CBCT , (CBCT) CTAnalyzer, CTAnalyzer (CTAnalyzer SkyScan Antwerp Belgium software Results interest volumetotal BV/TV, BVTV BV/TV BV TV (BV/TV) surfacetotal surface BS/TV, BSTV BS/TV BS (BS/TV) Tb. Tb (Tb N, N N) Th p<0.001. p0001 p p<0.001 0 001 (p<0.001) Sp p<0.001, p>0.05. p005 p>0.05 05 (p>0.05) Conclusion mass 1 n=5 n5 5 (n=5 (CBCT (BV/TV (BS/TV p000 p<0.00 00 (p<0.001 p00 p>0.0 (p>0.05 n= (n= p<0.0 (p<0.00 p0 p>0. (p>0.0 (n p<0. (p<0.0 p>0 (p>0. p<0 (p<0. p> (p>0 p< (p<0 (p> (p< (p

Abstract Associations between the WNT5A rs566926 variant and non-syndromic orofacial cleft (NSOC) have been reported in different populations. Objective This study aimed to investigate the role of the rs566926 single nucleotide polymorphism (SNP) in WNT5A and its interactions with SNPs in BMP4, FGFR1, GREM1, MMP2, and WNT3 in the occurrence of NSOC in a Brazilian population. Methodology A case-control genetic association study was carried out involving participants from four regions of Brazil, totaling 801 patients with non-syndromic cleft lip with or without cleft palate (NSCL±P), 273 patients with cleft palate only (NSCPO), and 881 health volunteers without any congenital condition (control). Applying TaqMan allelic discrimination assays, we evaluated WNT5A rs566926 in an ancestry-structured multiple logistic regression analysis, considering sex and genomic ancestry as covariates. Interactions between rs566926 and variants in genes involved in the WNT5A signaling pathway (BMP4, FGFR1, GREM1, MMP2, and WNT3) were also explored. Results WNT5A rs566926 was significantly associated with an increased risk of NSCL±P, particularly due to a strong association with non-syndromic cleft lip only (NSCLO), in which the C allele increased the risk by 32% (OR: 1.32, 95% CI: 1.04–1.67, p=0.01). According to the proportions of European and African genomic ancestry, the association of rs566926 reached significant levels only in patients with European ancestry. Multiple interactions were detected between WNT5A rs566926 and BMP4 rs2071047, GREM1 rs16969681 and rs16969862, and FGFR1 rs7829058. Conclusion The WNT5A rs566926 polymorphism was associated with NSCL±P, particularly in individuals with NSCLO and high European ancestry. Epistatic interactions involving WNT5A rs566926 and variants in BMP4, GREM1, and FGFR1 may contribute to the risk of NSCL±P in the Brazilian population. WNTA WNT rs rs56692 nonsyndromic non syndromic (NSOC populations SNP (SNP BMP FGFR GREM MMP2 MMP population casecontrol case control Brazil 80 NSCLP , NSCL P (NSCL±P) 27 NSCPO, NSCPO (NSCPO) 88 control. . (control) assays ancestrystructured structured analysis covariates (BMP4 explored NSCLO, (NSCLO) 32 OR (OR 132 1 1.32 95 CI 104167 04 67 1.04–1.67 p=0.01. p001 p p=0.01 0 01 p=0.01) rs2071047 rs1696968 rs16969862 rs7829058 rs5669 8 (NSCL±P 2 (NSCPO (control (BMP (NSCLO 3 13 1.3 9 10416 6 1.04–1.6 p00 p=0.0 rs207104 rs169696 rs1696986 rs782905 rs566 1. 1041 1.04–1. p0 p=0. rs20710 rs16969 rs169698 rs78290 rs56 104 1.04–1 p=0 rs2071 rs1696 rs7829 rs5 10 1.04– p= rs207 rs169 rs782 1.04 rs20 rs16 rs78 1.0 rs2 rs1 rs7

Abstract Objective: This study aimed to investigate the effects of systemic administration of P. eurycarpa Yalt. plant extract on alveolar bone loss and oxidative stress biomarkers in gingival tissue in a rat model of experimental periodontitis. Methodology: 32 male Wistar albino rats, weighing 200–250 g, were divided into four groups (n=8): Healthy control (HC), Experimental periodontitis control (EPC), Experimental periodontitis 400 mg/kg (EP400), Experimental periodontitis 800 mg/kg (EP800). Experimental periodontitis was induced using the ligating method. Distilled water was administered to the HC and EPC groups and the plant extract was administered to the EP400 and EP800 groups by oral gavage at doses of 400 mg/kg and 800 mg/kg, respectively. The rats were sacrificed on the 15th day. The values of glutathione peroxidase GSH-Px, malondialdehyde (MDA), superoxide dismustase (SOD), interleukin-1β (IL-1β), interleukin-10 (IL-10), total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI) in the gingival tissues were analyzed by ELISA tests. Alveolar bone loss was assessed using micro-CT images of the maxilla. Results: Although the IL-1β, TOS, OSI results of the healthy control group were lower than those of the other groups, the TAS values were higher (p<0.05). No significant difference was found in the biochemical parameters among the EPC, EP400, and EP800 groups (p>0.05). Alveolar bone loss was significantly reduced in the extract groups compared to the EPC group (p<0.001). Conclusion: Within the limitations of this study, it was observed that the systemic P. eurycarpa extract application reduced alveolar bone loss in a rat model of experimental periodontitis. Further studies are needed to elucidate the beneficial effects of P. eurycarpa. Objective P Yalt Methodology 3 200250 200 250 200–25 g n=8 n8 n 8 (n=8) HC, , (HC) (EPC) 40 mgkg mg kg EP (EP400) 80 EP800. . (EP800) method EP40 EP80 respectively th day GSHPx, GSHPx GSH Px, Px GSH-Px MDA, MDA (MDA) SOD, SOD (SOD) interleukin1β interleukinβ interleukin 1β β IL1β, IL1β ILβ IL (IL-1β) interleukin10 10 interleukin-1 IL10, IL10 (IL-10) TAS, (TAS) TOS (TOS) (OSI tests microCT micro CT maxilla Results 1β, IL-1β p<0.05. p005 p p<0.05 0 05 (p<0.05) p>0.05. p>0.05 (p>0.05) p<0.001. p0001 p<0.001 001 (p<0.001) Conclusion 20025 20 25 200–2 n= (n=8 (HC (EPC 4 (EP400 (EP800 EP4 EP8 (MDA (SOD (IL-1β interleukin1 1 interleukin- IL1 (IL-10 (TAS (TOS p00 p<0.0 (p<0.05 p>0.0 (p>0.05 p000 p<0.00 00 (p<0.001 2002 2 200– (n= (EP40 (EP80 (IL-1 p0 p<0. (p<0.0 p>0. (p>0.0 (p<0.00 (n (EP4 (EP8 (IL- p<0 (p<0. p>0 (p>0. (EP (IL p< (p<0 p> (p>0 (p< (p> (p

Abstract Objective This study aims to develop a compound biomaterial to achieve effective soft tissue regeneration. Methodology Compound hyaluronic acid (CHA) and liquid horizontal-platelet-rich fibrin (H-PRF) were mixed at a ratio of 1:1 to form a CHA-PRF gel. Human gingival fibroblasts (HGFs) were used in this study. The effect of CHA, H-PRF, and the CHA-PRF gel on cell viability was evaluated by CCK-8 assays. Then, the effect of CHA, H-PRF, and the CHA-PRF gel on collagen formation and deposition was evaluated by qRT‒PCR and immunofluorescence analysis. Finally, qRT‒PCR, immunofluorescence analysis, Transwell assays, and scratch wound-healing assays were performed to determine how CHA, H-PRF, and the CHA-PRF gel affect the migration of HGFs. Results The combination of CHA and H-PRF shortened the coagulation time of liquid H-PRF. Compared to the pure CHA and H-PRF group, the CHA-PRF group exhibited the highest cell proliferation at all time points, as shown by the CCK-8 assay. Col1a and FAK were expressed at the highest levels in the CHA-PRF group, as shown by qRT‒PCR. CHA and PRF could stimulate collagen formation and HGF migration, as observed by fluorescence microscopy analysis of COL1 and F-actin and Transwell and scratch healing assays. Conclusion The CHA-PRF group exhibited greater potential to promote soft tissue regeneration by inducing cell proliferation, collagen synthesis, and migration in HGFs than the pure CHA or H-PRF group. CHA-PRF can serve as a great candidate for use alone or in combination with autografts in periodontal or peri-implant soft tissue regeneration. (CHA horizontalplateletrich horizontal platelet rich HPRF H (H-PRF 11 1 1: CHAPRF (HGFs HPRF, PRF, CCK8 CCK 8 CCK- Then qRTPCR qRT PCR Finally woundhealing wound HPRF. PRF. points assay Cola Col COL Factin F actin synthesis periimplant peri implant

Abstract Objectives This review highlights the existence and association of Acinetobacter baumannii with the oro-dental diseases, transforming this systemic pathogen into an oral pathogen. The review also hypothesizes possible reasons for the categorization of this pathogen as code blue due to its stealthy entry into the oral cavity. Methodology Study data were retrieved from various search engines reporting specifically on the association of A. baumannii in dental diseases and tray set-ups. Articles were also examined regarding obtained outcomes on A. baumannii biofilm formation, iron acquisitions, magnitude of antimicrobial resistance, and its role in the oral cancers. Results A. baumannii is associated with the oro-dental diseases and various virulence factors attribute for the establishment and progression of oro-mucosal infections. Its presence in the oral cavity is frequent in oral microbiomes, conditions of impaired host immunity, age related illnesses, and hospitalized individuals. Many sources also contribute for its prevalence in the dental health care environment and the presence of drug resistant traits is also observed. Its association with oral cancers and oral squamous cell carcinoma is also evident. Conclusions The review calls for awareness on the emergence of A. baumannii in dental clinics and for the need for educational programs to monitor and control the sudden outbreaks of such virulent and resistant traits in the dental health care settings. orodental oro A setups. setups set ups. ups set-ups formation acquisitions resistance oromucosal mucosal infections microbiomes immunity illnesses individuals observed evident settings

Abstract Studies have highlighted numerous benefits of ozone therapy in the field of medicine and dentistry, including its antimicrobial efficacy against various pathogenic microorganisms, its ability to modulate the immune system effectively, reduce inflammation, prevent hypoxia, and support tissue regeneration. However, its effects on dental extraction healing remain to be elucidated. Objective Therefore, this study aimed to evaluate the effects of systemically administered ozone (O3) at different doses in the healing of dental extraction sockets in rats. Methodology To this end, 72 Wistar rats were randomly divided into four groups after extraction of the right upper central incisor: Group C – control, no systemic treatment; Group OZ0.3 – animals received a single dose of 0.3 mg/kg O3; Group OZ0.7 – a single dose of 0.7 mg/kg O3; and Group OZ1.0 – a single dose of 1.0 mg/kg O3, intraperitoneally. In total, six animals from each group were euthanized at 7, 14, and 21 days after the commencement of treatment. Bone samples were harvested and further analyzed by descriptive histology, histomorphometry, and immunohistochemistry for osteocalcin (OCN) and tartrate-resistant acid phosphatase (TRAP) protein expression. Results All applied doses of O3 were shown to increase the percentage of bone tissue (PBT) after 21 days compared to group C. After 14 days, the OZ0.7 and OZ1.0 groups showed significantly higher PBT when compared to group C. The OZ1.0 group presented the most beneficial results regarding PBT among groups, which denotes a dose-dependent response. OCN immunostaining was higher in all groups at 21 days. However, after seven and 14 days, the OZ1.0 group showed a significant increase in OCN immunostaining compared to C group. No differences in TRAP+ osteoclasts were found between groups and time points. Conclusion Therefore, O3 therapy at higher doses might be beneficial for bone repair of the alveolar socket following tooth extraction. dentistry microorganisms effectively inflammation hypoxia regeneration However elucidated Therefore O (O3 end 7 incisor control treatment OZ03 OZ OZ0 3 OZ0. 03 0 0. mgkg mg kg OZ07 07 OZ10 OZ1 OZ1. 10 1 1. intraperitoneally total 2 histology histomorphometry (OCN tartrateresistant tartrate resistant TRAP (TRAP expression (PBT dosedependent dependent response points (O

Abstract This study aimed to compare the quality of root canal obturation (ratio of area occupied by gutta-percha (G), sealer (S), and presence of voids (V)) in different anatomical irregularities (intercanal communications, lateral irregularities, and accessory canals) located at different thirds of the root canal system of mandibular molar replicas. Sixty-seven 3D printed replicas of an accessed mandibular molar were prepared using ProGlider and ProTaper Gold rotatory systems. Three specimens were randomly selected to be used as controls and did not receive further treatment. The rest were randomly distributed in 4 experimental groups to be obturated using either cold lateral compaction (LC), continuous wave of condensation (CW), and core-carrier obturation (ThermafilPlus (TH) or GuttaCore (GC)) (n=16 per group). AHPlus® sealer was used in all groups. The three controls and a specimen from each experimental group were scanned using micro-computed tomography. The rest of the replicas were sectioned at the sites of anatomical irregularities and examined at 30× magnification. The G, S, and V ratios were calculated dividing the area occupied with each element by the total root canal area and then compared among groups using the Kruskal-Wallis test. Voids were present in all obturation techniques with ratios from 0.01 to 0.15. CW obtained a significantly higher G ratio in the irregularity located in the coronal third (0.882) than LC (0.681), TH (0.773), and GC (0.801) (p<0.05). TH and GC achieved significantly higher G ratios in those located in the apical third (p<0.05). The worst quality of obturation was observed in the loop accessory canal with all obturation techniques. Whitin the limitations of this study, it can be concluded that CW and core-carrier obturation are respectively the most effective techniques for obturating anatomical irregularities located in the coronal and the apical third. guttapercha gutta percha , (G) S (S) (V) intercanal communications canals Sixtyseven Sixty seven D systems treatment LC, (LC) CW, (CW) corecarrier core carrier ThermafilPlus (TH (GC) n=16 n16 n 16 (n=1 group. . group) AHPlus microcomputed micro computed tomography 30 magnification KruskalWallis Kruskal Wallis test 001 0 01 0.0 015 15 0.15 0.882 0882 882 (0.882 0.681, 0681 0.681 681 (0.681) 0.773, 0773 0.773 773 (0.773) 0.801 0801 801 (0.801 p<0.05. p005 p p<0.05 05 (p<0.05) (G (S (V (LC (CW (GC n=1 n1 1 (n= 3 00 0. 0.1 0.88 088 88 (0.88 068 0.68 68 (0.681 077 0.77 77 (0.773 0.80 080 80 (0.80 p00 p<0.0 (p<0.05 n= (n 0.8 08 8 (0.8 06 0.6 6 (0.68 07 0.7 7 (0.77 p0 p<0. (p<0.0 (0. (0.6 (0.7 p<0 (p<0. (0 p< (p<0 ( (p< (p

Abstract Conventional views associate microbial biofilm with demineralization in root caries (RC) onset, while research on their collagenases role in the breakdown of collagen matrix has been sporadically developed, primarily in vitro. Recent discoveries, however, reveal proteolytic bacteria enrichment, specially Porphyromonas and other periodontitis-associated bacteria in subgingivally extended lesions, suggesting a potential role in RC by the catabolism of dentin organic matrix. Moreover, genes encoding proteases and bacterial collagenases, including the U32 family collagenases, were found to be overexpressed in both coronal and root dentinal caries. Despite these advancements, to prove microbial collagenolytic proteases’ definitive role in RC remains a significant challenge. A more thorough investigation is warranted to explore the potential of anti-collagenolytic agents in modulating biofilm metabolic processes or inhibiting/reducing the size of RC lesions. Prospective treatments targeting collagenases and promoting biomodification through collagen fibril cross-linking show promise for RC prevention and management. However, these studies are currently in the in vitro phase, necessitating additional research to translate findings into clinical applications. This is a comprehensive state-of-the-art review aimed to explore contributing factors to the formation of RC lesions, particularly focusing on collagen degradation in root tissues by microbial collagenases. (RC onset developed discoveries however enrichment periodontitisassociated periodontitis associated lesions Moreover U U3 advancements challenge anticollagenolytic anti inhibitingreducing inhibiting reducing crosslinking cross linking management However phase applications stateoftheart state art

Abstract Objective the aim of this study was to analyze the influence of ozone therapy (OZN) on peri-implant bone repair in critical bones by installing osseointegrated implants in the tibia of ovariectomized rats. Methodology ovariectomy was performed on 30 Wistar rats, aged six months (Rattus novergicus), and, after 90 days, osseointegrated implants were installed in each tibial metaphysis. The study groups were divided into the animals that received intraperitoneal ozone at a concentration of 700 mcg/kg — OZ Group (n=15) — and a control group that received an intraperitoneal saline solution and, for this reason, was named the SAL group (n=15). The applications for both groups occurred during the immediate post-operative period on the 2nd, 4th, 6th, 8th, 10th, and 12th day post-surgery. At various stages (14, 42, and 60 days), the animals were euthanized, and tests were performed on their tibiae. These tests include histomorphometric and immunohistochemical analyses, computerized microtomography, sampling in light-cured resin for calcified sections, and confocal microscopy. The obtained data were then analyzed using One-way ANOVA and the Shapiro-Wilk, Kruskal-Wallis, and student t-tests (P<0.05). Results our findings indicate that the OZ group (3.26±0.20 mm) showed better cellular organization and bone neoformation at 14 days (SAL group, 0.90±1.42 mm) (P=0.001). Immunohistochemistry revealed that osteocalcin labeling was moderate in the OZ group and mild in the SAL group at 14 and 42 days post-surgery. The data from the analysis of calcified tissues (microtomography, histometric, and bone dynamism analysis) at 60 days showed no statistically significant differences between the groups (P=0.32). Conclusion it was concluded that ozone therapy anticipated the initial phases of the peri-implant bone repair process. OZN (OZN periimplant peri implant rats 3 Rattus novergicus, novergicus , novergicus) 9 metaphysis 70 mcgkg mcg kg n=15 n15 n 15 (n=15 reason n=15. . postoperative post operative 2nd nd 4th th 6th 8th 10th postsurgery. postsurgery surgery. surgery post-surgery 14, (14 6 days) euthanized tibiae analyses microtomography lightcured light cured sections microscopy Oneway One way ShapiroWilk, ShapiroWilk Shapiro Wilk, Wilk Shapiro-Wilk KruskalWallis, KruskalWallis Kruskal Wallis, Wallis Kruskal-Wallis ttests t P<0.05. P005 P P<0.05 0 05 (P<0.05) 3.26±0.20 326020 26 20 (3.26±0.2 mm 1 090142 0.90±1.4 P=0.001. P0001 P=0.001 001 (P=0.001) 4 (microtomography histometric P=0.32. P032 P=0.32 32 (P=0.32) process 7 n=1 n1 (n=1 (1 P00 P<0.0 (P<0.05 3.26±0.2 32602 2 (3.26±0. 09014 0.90±1. P000 P=0.00 00 (P=0.001 P03 P=0.3 (P=0.32 n= (n= ( P0 P<0. (P<0.0 3.26±0. 3260 (3.26±0 0901 0.90±1 P=0.0 (P=0.00 P=0. (P=0.3 (n P<0 (P<0. 3.26±0 326 (3.26± 090 0.90± (P=0.0 P=0 (P=0. P< (P<0 3.26± (3.26 09 0.90 P= (P=0 (P< 3.26 (3.2 0.9 (P= (P 3.2 (3. 0. 3. (3

Abstract At low concentrations used for in-office bleaching gels, such as 6% HP, gingival barrier continues to be performed. If we take into account that, in the at-home bleaching technique, no barrier is indicated, it seems that the use of a gingival barrier fails to make much sense when bleaching gel in low concentration is used for in-office bleaching. Objective This double-blind, split-mouth, randomized clinical trial evaluated the gingival irritation (GI) of in-office bleaching using 6% hydrogen peroxide (HP) with and without a gingival barrier in adolescents, as well as color change and the impact of oral condition on quality of life. Methodology Overall, 60 participants were randomized into which side would or would not receive the gingival barrier. In-office bleaching was performed for 50 minutes with 6% HP in three sessions. The absolute risk and intensity of GI were assessed with a visual analogue scale. Color change was assessed using a digital spectrophotometer and color guides. The impact of oral condition on quality of life was assessed using the Brazilian version of the Oral Health Impact Profile (α=0.05). Results The proportion of patients who presented GI for the “with barrier” group was 31.6% and for the “without barrier” group, 30% (p=1.0). There is an equivalence for the evaluated groups regarding GI intensity (p<0.01). Color change was detected with no statistical differences (p>0.29). There was a significant impact of oral condition on quality of life after bleaching (p<0.001). Conclusions The use or not of the gingival barrier for in-office bleaching with 6% HP was equivalent for GI, as well as for bleaching efficacy, with improvement in the impact of oral condition on quality of life. inoffice office gels 6 athome at home technique indicated doubleblind, doubleblind double blind, blind double-blind splitmouth, splitmouth split mouth, mouth split-mouth (GI (HP adolescents Overall Inoffice In 5 sessions scale guides α=0.05. α005 α α=0.05 . 0 05 (α=0.05) 316 31 31.6 30 p=1.0. p10 p p=1.0 1 (p=1.0) p<0.01. p001 p<0.01 01 (p<0.01) p>0.29. p029 p>0.29 29 (p>0.29) p<0.001. p0001 p<0.001 001 (p<0.001) efficacy α00 α=0.0 (α=0.05 3 31. p1 p=1. (p=1.0 p00 p<0.0 (p<0.01 p02 p>0.2 2 (p>0.29 p000 p<0.00 00 (p<0.001 α0 α=0. (α=0.0 p=1 (p=1. p0 p<0. (p<0.0 p>0. (p>0.2 (p<0.00 α=0 (α=0. p= (p=1 p<0 (p<0. p>0 (p>0. α= (α=0 (p= p< (p<0 p> (p>0 (α= (p (p< (p> (α