Journal of Applied Oral Science最新文献

{"title":"Adjuvant antimicrobial photodynamic therapy improves periodontal health and reduces inflammatory cytokines in patients with type 1 diabetes mellitus.","authors":"Paula de Oliveira Cunha, Isabela Rodrigues Gonsales, Sebastião Luiz Aguiar Greghi, Adriana Campos Passanezi Sant'ana, Heitor Marques Honório, Carlos Antonio Negrato, Mariana Schutzer Ragghianti Zangrando, Carla Andreotti Damante","doi":"10.1590/1678-7757-2024-0258","DOIUrl":"10.1590/1678-7757-2024-0258","url":null,"abstract":"<p><strong>Background: </strong>Antimicrobial photodynamic therapy (aPDT) is an adjuvant treatment to scaling and root planing (SRP) which improves periodontal health. It may be beneficial to patients with systemic diseases, such as type 1 diabetes mellitus.</p><p><strong>Objective: </strong>This randomized clinical trial evaluated the adjunctive effect of aPDT on the periodontal treatment of patients with type 1 diabetes (T1D).</p><p><strong>Methodology: </strong>38 patients were included in the study and divided into four groups: DSRP - T1D patients treated with SRP; CSRP - normoglycemic patients treated with SRP; DPDT - T1D patients treated with SRP + aPDT (methylene blue and red laser); CPDT - normoglycemic patients treated with SRP + aPDT. , Periodontal clinical parameters and inflammatory cytokines in crevicular fluid were recorded at baseline and then after 1, 3 and 6 months. The clinical endpoint for treatment was evaluated after 6 months.</p><p><strong>Results: </strong>Adjuvant aPDT treatment resulted in reduction of probing depth after 3 months (0.38 mm - p<0.05) on T1D patients and in control group after 6 months (0.66 mm - p<0.05). Reduction of clinical attachment levels was similar for both treatments in control patients (p>0.05). There was a significant reduction of TNF-α in crevicular fluid in both groups treated with aPDT (p<0.05). The T1D (65%) and normoglycemic (72%) groups achieved the clinical endpoint after both treatments (p>0.05).</p><p><strong>Conclusions: </strong>Adjuvant aPDT provided additional benefits in improving periodontal clinical parameters and reducing inflammatory cytokines in both T1D and normoglycemic patients. However, normoglycemic patients showed greater clinical improvements compared to T1D patients following adjuvant aPDT treatment.</p>","PeriodicalId":15133,"journal":{"name":"Journal of Applied Oral Science","volume":"32 ","pages":"e20240258"},"PeriodicalIF":2.2,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11464078/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142390800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The dynamin inhibitor, dynasore, prevents zoledronate-induced viability loss in human gingival fibroblasts by partially blocking zoledronate uptake and inhibiting endosomal acidification.","authors":"Jacob Kirby, Makayla Standfest, Jessica Binkley, Charles Barnes, Evan Brown, Tyler Cairncross, Alex Cartwright, Danielle Dadisman, Colten Mowat, Daniel Wilmot, Theodore Houseman, Conner Murphy, Caleb Engelsman, Josh Haller, Daniel Jones","doi":"10.1590/1678-7757-2024-0224","DOIUrl":"10.1590/1678-7757-2024-0224","url":null,"abstract":"<p><strong>Objective: </strong>For treatment of medication-related osteonecrosis of the jaw, one proposed approach is the use of a topical agent to block entry of these medications in oral soft tissues. We tested the ability of phosphonoformic acid (PFA), an inhibitor of bisphosphonate entry through certain sodium-dependent phosphate contransporters (SLC20A1, 20A2, 34A1-3) as well as Dynasore, a macropinocytosis inhibitor, for their abilities to prevent zoledronate-induced (ZOL) death in human gingival fibroblasts (HGFs).</p><p><strong>Methodology: </strong>MTT assay dose-response curves were performed to determine non-cytotoxic levels of both PFA and Dynasore. In the presence of 50 μM ZOL, optimized PFA and Dynasore doses were tested for their ability to restore HGF viability. To determine SLC expression in HGFs, total HGF RNA was subjected to quantitative real-time RT-PCR. Confocal fluorescence microscopy was employed to see if Dynasore inhibited macropinocytotic HGF entry of AF647-ZOL. Endosomal acidification in the presence of Dynasore was measured by live cell imaging utilizing LysoSensor Green DND-189. As a further test of Dynasore's ability to interfere with ZOL-containing endosomal maturation, perinuclear localization of mature endosomes containing AF647-ZOL or TRITC-dextran as a control were assessed via confocal fluorescence microscopy with CellProfiler™ software analysis of the resulting photomicrographs.</p><p><strong>Results: </strong>0.5 mM PFA did not rescue HGFs from ZOL-induced viability loss at 72 hours while 10 and 30 μM geranylgeraniol did partially rescue. HGFs did not express the SLC transporters as compared to the expression in positive control tissues. 10 μM Dynasore completely prevented ZOL-induced viability loss. In the presence of Dynasore, AF647-ZOL and FITC-dextran co-localized in endosomes. Endosomal acidification was inhibited by Dynasore and perinuclear localization of both TRITC-dextran- and AF647-ZOL-containing endosomes was inhibited by 30 μM Dynasore.</p><p><strong>Conclusion: </strong>Dynasore prevents ZOL-induced viability loss in HGFs by partially interfering with macropinocytosis and by inhibiting the endosomal maturation pathway thought to be needed for ZOL delivery to the cytoplasm.</p>","PeriodicalId":15133,"journal":{"name":"Journal of Applied Oral Science","volume":"32 ","pages":"e20240224"},"PeriodicalIF":2.2,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11464084/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142365285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical response to nonsurgical periodontal therapy is associated with decreased serum leukocyte count and uric acid levels in kidney transplant recipients.","authors":"Samira Vasconcelos Gomes, Danila Lorena Nunes-Dos-Santos, Luciana Salles Branco-De-Almeida, Bruno Braga Benatti, Vandilson Rodrigues","doi":"10.1590/1678-7757-2024-0206","DOIUrl":"10.1590/1678-7757-2024-0206","url":null,"abstract":"<p><strong>Objective: </strong>This study sought to investigate the relationship between clinical response to nonsurgical periodontal therapy (NSPT) and serum changes in leukocyte count, fasting blood glucose, hemoglobin, hematocrit, creatinine, and uric acid in kidney transplant recipients (KTR).</p><p><strong>Methodology: </strong>A prospective study was performed on 20 KTRs. Periodontal and serum data were collected before and 90 days after NSPT, and delta values (Δ = after NSPT - before) were calculated. Periodontal assessment included periodontal probing depth (PPD), clinical attachment level (CAL), and bleeding on probing (BOP). Patients were classified based on the presence of periodontitis and then categorized into stages.</p><p><strong>Results: </strong>Patients showed a reduction in the percentage of sites with PPD≥3mm, PPD≥4 mm and BOP, after NSPT. There was a direct correlation between the deltas of leukocyte count and CAL ≥3 mm (r=0.645, P=0.002) and BOP (r=0.663, P=0.001), and the deltas of uric acid and CAL ≥3 mm (r=0.562, P=0.010).</p><p><strong>Conclusion: </strong>A good clinical response to NSPT may affect the reduction of serum levels of leukocyte count and uric acid, suggesting a beneficial effect on systemic health in KTR.</p>","PeriodicalId":15133,"journal":{"name":"Journal of Applied Oral Science","volume":"32 ","pages":"e20240206"},"PeriodicalIF":2.2,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11464077/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142365284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Thai propolis mixed in mineral trioxide aggregate on matrix metalloproteinase-2 expression and activity in inflamed human dental pulp cells.","authors":"Nutnicha Tiyapitsanupaisan, Nutthapong Kantrong, Subin Puasiri, Anupong Makeudom, Suttichai Krisanaprakornkit, Pattama Chailertvanitkul","doi":"10.1590/1678-7757-2024-0168","DOIUrl":"10.1590/1678-7757-2024-0168","url":null,"abstract":"<p><strong>Objectives: </strong>This study sought to determine effects of Thai propolis extract mixed in mineral trioxide aggregate (MTA) on matrix metalloproteinase-2 (MMP-2) expression and its activity in inflamed human dental pulp cells (HDPCs).</p><p><strong>Materials and methods: </strong>Interleukin-1β-primed HDPCs were treated with either the eluate of MTA mixed with distilled water, of MTA mixed with 0.75 mg/ml of the propolis extract, or of Dycal®, 0.75 mg/ml of the propolis extract, or 0.2% (v/v) of chlorhexidine for 24 or 72 h. The viability of HDPCs was determined by the PrestoBlue® cytotoxic assay. HDPCs' lysates were analyzed for MMP-2 mRNA expression by RT-qPCR, while their supernatants were measured for MMP-2 activity by gelatin zymography.</p><p><strong>Results: </strong>At 24 and 72 h, a non-toxic dose of the propolis extract at 0.75 mg/ml by itself or mixed in MTA tended to reduce MMP-2 expression upregulated by MTA, while it further decreased the MMP-2 activity as compared to that of MTA mixed with distilled water. The MMP-2 activity of interleukin-1β-primed HDPCs treated with the eluate of the propolis extract mixed in MTA was significantly lower than that of interleukin-1β-primed HDPCs at 24 h (p=0.012). As a control, treatment with chlorhexidine significantly inhibited MMP-2 expression induced by MTA and MMP-2 activity enhanced by interleukin-1β (p<0.05). Treatment with Dycal® caused a significant increase in HDPC's death, resulting in a significant decrease in MMP-2 expression and activity (p<0.05).</p><p><strong>Conclusions: </strong>MTA mixed with Thai propolis extract can reduce MMP-2 mRNA expression and activity when compared to MTA mixed with distilled water in inflamed HDPCs.</p>","PeriodicalId":15133,"journal":{"name":"Journal of Applied Oral Science","volume":"32 ","pages":"e20240168"},"PeriodicalIF":2.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11464073/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of calcium hydroxide and double antibiotic paste on radiographic outcomes and periapical MMP-8 levels in regenerative endodontic procedures: a randomized clinical trial.","authors":"Burc Pekpinarli, Mehmet Emin Kaval, Dilsah Cogulu, Betul Ilhan, Timo Sorsa, Taina Tervahartiala, Ozant Oncag","doi":"10.1590/1678-7757-2024-0122","DOIUrl":"10.1590/1678-7757-2024-0122","url":null,"abstract":"<p><strong>Objective: </strong>The primary goal is to evaluate the effects of two different intracanal medicaments, calcium hydroxide [Ca(OH)2] and double antibiotic paste (DAP), on radiographic outcomes during regenerative endodontic procedures (REP) of immature permanent mandibular first molars with symptomatic irreversible pulpitis and symptomatic apical periodontitis (SIP/SAP). Additionally, the secondary goal was to evaluate MMP-8 levels during REP using two different intracanal medicaments.</p><p><strong>Methodology: </strong>The study included 20 patients with immature mandibular first molars exhibiting SIP/SAP. Participants were randomly assigned into two groups based on the applied intracanal medicament. Ca(OH)2 (n=10) was prepared by mixing it with sterile distilled water, while the same amount of powdered metronidazole and ciprofloxacin were mixed and combined with sterile distilled water for DAP (n=10). MMP-8 in periapical samples were measured at baseline and on the 14th day using immunofluorometric assay. Image-J software with TurboReg plug-in was utilized to determine changes in root length, root width, radiographic root area (RRA) during the 12-month follow-up period. Data were analyzed by SPSS 25.0 (p<.05).</p><p><strong>Results: </strong>Significant increase in MMP-8 on the 14th day compared to baseline in both groups (p<0.001). There was no significant difference between the two groups in terms of the increase in MMP-8 (p>0.05). Root length significantly increased in both groups (p=0.001), with Ca(OH)2 showing a greater increase (p=0.046). Root width and RRA increased similarly in both groups at 12th month.</p><p><strong>Conclusion: </strong>Both Ca(OH)2 and DAP applications resulted in a significant increase in periapical MMP-8 levels. Increase in radiographic root width and root area was similar between two groups, but Ca(OH)2 led to a significantly greater increase in root length. Further studies with larger sample sizes are necessary to validate our findings during REP of vital immature permanent mandibular molars. Clinical Trials database: NCT05581706.</p>","PeriodicalId":15133,"journal":{"name":"Journal of Applied Oral Science","volume":"32 ","pages":"e20240122"},"PeriodicalIF":2.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11464082/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physicochemical properties of flowable composites using isobornyl methacrylate as diluent monomer.","authors":"Roberta Pinto Pereira, Dayane de Oliveira, Mateus Garcia Rocha, Lourenço Correr-Sobrinho, Jean-François Roulet, Mario Alexandre Coelho Sinhoreti","doi":"10.1590/1678-7757-2024-0172","DOIUrl":"10.1590/1678-7757-2024-0172","url":null,"abstract":"<p><strong>Objective: </strong>this study sought to evaluate the effect of isobornyl methacrylate (IBOMA) as a diluent monomer on the physicochemical properties of experimental flowable resin composites.</p><p><strong>Methodology: </strong>the organic resin matrix of a modal flowable resin composite was formulated with 50 wt.% of bisphenol-A-glycidyl methacrylate (Bis-GMA) and 50 wt.% of a diluent monomer, in which IBOMA was used as a combining or substituent diluent monomer to triethylene glycol dimethacrylate (TEGDMA). The resin matrices were filled with 55 wt.% particles, of which 10 wt.% was 0.05-μm fumed silica, and 45 wt.% was 0.7-μm BaBSiO2 glass. Polymerization shrinkage stress (PSS; n=10), degree of conversion (DC; n=3), maximum rate of polymerization (Rpmax; n=3), film thickness (FT; n=10), sorption (Wsp; n=10), solubility (Wsl; n=10), flexural strength (FS; n=10), flexural modulus (FM; n=10), Knoop microhardness (KH; n=10), and microhardness reduction after chemical softening (HR; n=10) were evaluated. Data were analyzed using one-way ANOVA, followed by Tukey's test (α=0.05; β=0.2).</p><p><strong>Results: </strong>the results showed that the substitution or addition of IBOMA reduced FT (p=0.001), PSS (p=0.013), Rpmax (p=0.001), DC (p=0.001), FM (p=0.006) Wsp (p=0.032), and Wsl (p=0.021). However, when used as a complete substituent, IBOMA demonstrated significantly lower FS (p=0.017) and KH (p=0.008), while TEGDMA demonstrated significantly lower HR (p=0.022).</p><p><strong>Conclusion: </strong>the flowable composite containing IBOMA combined with TEGDMA showed no effect in KH and FS and effectively reduced the PSS, RP, FT, Wsp, and Wsl. However, it showed a reduction in DC, FS, and an increase in HR.</p>","PeriodicalId":15133,"journal":{"name":"Journal of Applied Oral Science","volume":"32 ","pages":"e20240172"},"PeriodicalIF":2.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11464074/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of dexmedetomidine-ketamine combination versus dexmedetomidine on behavior of uncooperative pediatric dental patients: a randomized controlled clinical trial.","authors":"Sara Hassan El-Rouby, Yasmi O Crystal, Ahmed M Elshafie, Nadia A Wahba, Magda M El-Tekeya","doi":"10.1590/1678-7757-2024-0057","DOIUrl":"10.1590/1678-7757-2024-0057","url":null,"abstract":"<p><strong>Objective: </strong>Uncooperative behavior in pediatric dentistry is one of the most common manifestations of dental anxiety. Managing anxious patients can be attained by moderate sedation. This study aimed to compare the effect of sedation by dexmedetomidine-ketamine combination (DEX-KET) versus dexmedetomidine (DEX) on behavior of uncooperative pediatric dental patients.</p><p><strong>Methodology: </strong>In total, 56 uncooperative healthy children (3-5 years old) requiring dental treatment were divided randomly into two groups: Group I (study group), which received buccal dexmedetomidine (2 μg/kg) and ketamine (2 mg/kg), and Group II (control group), which received only buccal dexmedetomidine (4 μg/kg). Drugs effects were assessed in terms of hemodynamic parameters, patient's drug acceptance, child behavior, postoperative effect of sedation, amnesic effect, incidence of adverse events, as well as procedural induced stress measured by salivary secretory immunoglobulin A (s-IgA).</p><p><strong>Results: </strong>Hemodynamic results did not reveal a statistically significant difference between the two study groups (P>0.05). There was a significant difference in patient's acceptance to sedative drug between both groups, favoring DEX (p=0.005). Children who received DEX-KET showed significantly better behavior than those who received DEX for local anesthesia (p=0.017) and during operative procedure (p=0.037). Adverse events, post-operative and amnesic effects of drugs were comparable in both groups (p>0.05). Moreover, the mean difference in the salivary s-IgA levels between initial and final value was not statistically significant between both groups (p=0.556).</p><p><strong>Conclusion: </strong>Both DEX-KET combination and DEX alone are effective in providing hemodynamic stability. DEX-KET combination significantly improved the behavior of sedated children compared to DEX alone but the drug acceptance was decreased in the DEX-KET group. Both regimens did not have a negative effect on postoperative behavior of children and had comparable amnesic effect with no significant adverse events. Salivary s-IgA is not considered a potential stress biomarker in sedated children.</p>","PeriodicalId":15133,"journal":{"name":"Journal of Applied Oral Science","volume":"32 ","pages":"e20240057"},"PeriodicalIF":2.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11464076/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bleaching as a complement to fluoride-enhanced remineralization or resin infiltration in masking white spot lesions.","authors":"Talita Portela Pereira, Karin Landmayer, Bruna de Oliveira Iatarola, Mariele Vertuan, Ana Carolina Magalhães, Luciana Fávaro Francisconi-Dos-Rios","doi":"10.1590/1678-7757-2024-0097","DOIUrl":"10.1590/1678-7757-2024-0097","url":null,"abstract":"<p><strong>Objective: </strong>There are many suitable strategies for addressing caries, which is an ongoing worldwide problem. Although white spot lesions (WSLs) can be either remineralized naturally or treated with non- or micro-invasive strategies, their whitish and opaque appearance may persist. To evaluate the effects of tooth bleaching as a complement to fluoride-enhanced remineralization or resin infiltration in masking WSLs, as well as in enamel surface roughness relative to that of the adjacent enamel.</p><p><strong>Methodology: </strong>Flattened rectangular bovine enamel fragments (6×3×~2.9 mm length, width and thickness) were divided into six groups (L/N, F/N, F.BL/BL, I/N, I.BL/BL, N/N; n=15). Treatments applied to the 3×3 mm left half included: L (Lesion) - WSL simulation with 50 mM acetate buffer, 96 hours, 37ºC; F (Fluoride) - WSL treatment with 2% NaF neutral gel, 1x/week, 8 weeks; I (Infiltration) - WSL treatment with H3PO4 37%/10 s; Icon®-Dry/30 s; Icon®-Infiltrant/3 min+1 min; N (Nothing) - sound enamel/control. Treatments applied to both halves after F and I included: BL (Bleaching) - Opalescence Boost 40%, 3×/20 min each; N (Nothing) - control. The differences in color (ΔE00, ΔL, Δa, Δb) and surface roughness (ΔRa) between the left and right halves were measured. Kruskal-Wallis/post-hoc tests were applied to ΔE00, ΔL, Δa and ΔRa, and 1-way ANOVA/Tukey tests to Δb (α=0.05).</p><p><strong>Results: </strong>The factor under study significantly influenced ΔE00 (p=0.0001), ΔL (p=0.0024), Δb (p=0.0015), and ΔRa (p<0.001), but not Δa (p=0.1592). Both fluoride-enhanced remineralization and resin infiltration were able to mask WSL, regardless of subsequent bleaching. However, when bleaching was performed, ΔE00 median values did not exceed the acceptability threshold for color difference. Only resin infiltration reduced ΔRa between WSL and the adjacent enamel.</p><p><strong>Conclusions: </strong>Both remineralization and infiltration, particularly if complemented by bleaching, fostered satisfactory esthetic results. Only infiltration without bleaching led to really good results in surface roughness.</p>","PeriodicalId":15133,"journal":{"name":"Journal of Applied Oral Science","volume":"32 ","pages":"e20240097"},"PeriodicalIF":2.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11464075/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Titanium micro-nano textured surface with strontium incorporation improves osseointegration: an in vivo and in vitro study.","authors":"Pio Moerbeck da Costa Filho,Camila Chiérici Marcantonio,Diego Pedreira de Oliveira,Maria Eduarda Scordamaia Lopes,Julio Cesar Sanchez Puetate,Luan Viana Faria,Letícia de Freitas Carvalho,Rafael Scaf de Molon,Idelmo Rangel Garcia Junior,Andressa Vilas Bôas Nogueira,James Deschner,Joni Augusto Cirelli","doi":"10.1590/1678-7757-2024-0144","DOIUrl":"https://doi.org/10.1590/1678-7757-2024-0144","url":null,"abstract":"OBJECTIVESThis study aimed to investigate the osseointegration of titanium (Ti) implants with micro-nano textured surfaces functionalized with strontium additions (Sr) in a pre-clinical rat tibia model.METHODOLOGYTi commercially pure (cp-Ti) implants were installed bilaterally in the tibia of 64 Holtzman rats, divided into four experimental groups (n=16/group): (1) Machined surface - control (C); (2) Micro-nano textured surface treatment (MN); (3) Micro-nano textured surface with Sr2+ addition (MNSr); and (4) Micro-nano textured surface with a higher complementary addition of Sr2+ (MNSr+). In total, two experimental euthanasia periods were assessed at 15 and 45 days (n=8/period). The tibia was subjected to micro-computed tomography (μ-CT), histomorphometry with the EXAKT system, removal torque (TR) testing, and gene expression analysis by PCR-Array of 84 osteogenic markers. Gene expression and protein production of bone markers were performed in an in vitro model with MC3T3-E1 cells. The surface characteristics of the implants were evaluated by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and laser scanning confocal microscopy.RESULTSSEM, confocal, and EDS analyses demonstrated the formation of uniform micro-nano textured surfaces in the MN group and Sr addition in the MNSr and MNSr+ groups. TR test indicated greater osseointegration in the 45-day period for treated surfaces. Histological analysis highlighted the benefits of the treatments, especially in cortical bone, in which an increase in bone-implant contact was found in groups MN (15 days) and MNSr (45 days) compared to the control group. Gene expression analysis of osteogenic activity markers showed modulation of various osteogenesis-related genes. According to the in vitro model, RT-qPCR and ELISA demonstrated that the treatments favored gene expression and production of osteoblastic differentiation markers.CONCLUSIONSMicro-nano textured surface and Sr addition can effectively improve and accelerate implant osseointegration and is, therefore, an attractive approach to modifying titanium implant surfaces with significant potential in clinical practice.","PeriodicalId":15133,"journal":{"name":"Journal of Applied Oral Science","volume":"19 1","pages":"e20240144"},"PeriodicalIF":2.7,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of adding electro-massage to manual therapy for the treatment of individuals with myofascial temporomandibular pain: a randomized controlled trial.","authors":"Luis Espejo-Antúnez,María de Los Ángeles Cardero-Durán,Alberto Marcos Heredia-Rizo,María Jesús Casuso-Holgado,Manuel Albornoz-Cabello","doi":"10.1590/1678-7757-2024-0109","DOIUrl":"https://doi.org/10.1590/1678-7757-2024-0109","url":null,"abstract":"OBJECTIVETo evaluate the effect of the addition of dynamic cervical electrical stimulation (electro-massage, ES) to manual therapy (MT), compared to MT by itself, in individuals with myofascial temporomandibular pain.METHODOLOGYA total of 46 participants with bilateral myofascial temporomandibular pain for at least three months were distributed into two groups. Group 1 (n=21) received local MT consisting of soft tissue mobilization and release techniques over the neck and temporomandibular regions. Group 2 (n=25) received an ES procedure in the cervical region combined with the same intervention as group 1. All participants underwent a 2-week protocol. The primary outcomes were pain intensity (Visual Analogue Scale), pressure pain threshold (PPT) at the masseter and upper trapezius muscles (algometer), and pain-free vertical mouth opening (manual gauge). The secondary outcome was active cervical range-of-movement. Measurements were taken at baseline, immediately after intervention, and at a 4-week follow-up.RESULTSThe ANOVA revealed significant changes over group*time, with better results for group 2 (large effect sizes) regarding pain intensity (p< 0.001; η2>0.14), pressure pain sensitivity and mouth opening (p<0.001; η2>0.14). Similar findings were observed for active cervical range-of-movement in all directions (p<0.001; η2>0.14), except rotation (p≥0.05).CONCLUSIONElectrical stimulation therapy over the cervical region combined with a MT protocol over the neck and temporomandibular joint shows better clinical benefits than MT by itself in subjects with myofascial temporomandibular pain. Registration code: NCT04098952.","PeriodicalId":15133,"journal":{"name":"Journal of Applied Oral Science","volume":"65 1","pages":"e20240109"},"PeriodicalIF":2.7,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}