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de Almeida-Junior LA, de Campos Chaves Lamarque G, Herrera H, Arnez MFM, Lorencetti-Silva F, Silva RAB, Silva LAB, Paula-Silva FWG. Analysis of the cytotoxicity and bioactivity of CeraSeal, BioRoot™ and AH Plus ® sealers in pre-osteoblast lineage cells. BMC Oral Health 2024; 24:262. [PMID: 38389110 PMCID: PMC10882839 DOI: 10.1186/s12903-024-04021-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/13/2024] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND The objective of the present study was to evaluate in vitro the cytotoxicity and bioactivity of various endodontic sealers (CeraSeal, BioRoot™ and AH Plus®) in pre-osteoblast mouse cells (MC3T3 cells). METHODS MC3T3 cells (ATCC CRL-2594) were plated in 1 × 104 cells/well in 96-well plates in contact with endodontic sealers at concentrations of 1:10 and 1:100. Cell viability was evaluated by MTT assay after 24 and 48 h. In addition, sealer bioactivity was measured by RT-PCR for mediator of inflammation (Tnf, Ptgs2) and mineralization (Runx2, Msx1, Ssp1 and Dmp1) after 24 h and by Alizarin Red S Assay of mineralization after 28 days. Data were analyzed using one-way ANOVA followed by the Tukey's post-test at a significance level of 5%. RESULTS BioRoot™ presented 24-hour cytotoxicity (p < 0.05) at 1:10 concentration. In the period of 48 h, no endodontic cement was cytotoxic to the cells compared to the control (p > 0.05). TNF-α gene expression was induced by AH Plus® (p < 0.05), while Ptgs2 was induced by the CeraSeal and BioRoot™ (p < 0.05). The expression of Runx2 was stimulated by BioRoot™ and AH Plus® (p < 0.05). In contrast, the expression of Dmp-1 Dmp1 was higher for the CeraSeal and BioRoot™ (p < 0.05). Nonetheless, the sealers did not impact the formation of mineralization nodules (p > 0.05). CONCLUSION CeraSeal, BioRoot™ and AH Plus® sealers were not cytotoxic to MC3T3 cells within 48 h, but differentially induced the expression of genes related to inflammation and mineralization without impacting biomineralization by the cells.
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Affiliation(s)
- Luciano Aparecido de Almeida-Junior
- Department of Clinics and Surgery, School of Dentistry, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
- Department of Pediatric Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Av. do Cafe s/n, Monte Alegre, Ribeirão Preto, São Paulo, CEP: 14040-904, Brazil
| | - Giuliana de Campos Chaves Lamarque
- Department of Pediatric Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Av. do Cafe s/n, Monte Alegre, Ribeirão Preto, São Paulo, CEP: 14040-904, Brazil
| | - Henry Herrera
- Universidad Católica de El Salvador, San Salvador, El Salvador
| | - Maya Fernanda Manfrin Arnez
- Department of Pediatric Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Av. do Cafe s/n, Monte Alegre, Ribeirão Preto, São Paulo, CEP: 14040-904, Brazil
| | | | - Raquel Assed Bezerra Silva
- Department of Pediatric Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Av. do Cafe s/n, Monte Alegre, Ribeirão Preto, São Paulo, CEP: 14040-904, Brazil
| | - Léa Assed Bezerra Silva
- Department of Pediatric Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Av. do Cafe s/n, Monte Alegre, Ribeirão Preto, São Paulo, CEP: 14040-904, Brazil
| | - Francisco Wanderley Garcia Paula-Silva
- Department of Pediatric Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Av. do Cafe s/n, Monte Alegre, Ribeirão Preto, São Paulo, CEP: 14040-904, Brazil.
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Barbosa PIZ, Lima RB, Marubayashi LM, Oliveira HFD, Silva RABD, Nelson-Filho P, Arnez MFM, Paula-Silva FWGD, Queiroz AMD. Activation of gelatinases in permanent human teeth after different experimental radiotherapy protocols. Braz Dent J 2023; 34:130-139. [PMID: 38133087 PMCID: PMC10742356 DOI: 10.1590/0103-6440202305542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 10/17/2023] [Indexed: 12/23/2023] Open
Abstract
The objective of this study was to compare the activation of gelatinases in dentin-enamel junction (DEJ) and underlying dentin of permanent teeth after experimental radiotherapy in conventional and hypofractionated modalities. Newly extracted third molars (n = 15) were divided into three experimental radiotherapy groups: control, conventional (CR), and hypofractionated (HR) (n = 5 per group). After in vitro exposure to ionizing radiation, following standardized protocols for each modality, a gelatinous substrate was incubated on the tooth slices (n = 10 per group). Activation of gelatinases was measured by in situ zymography, expressed in arbitrary fluorescence units (mm2) from three tooth regions: cervical, cuspal, and pit. Fluorescence intensity was compared among radiotherapy protocols and tooth regions in each protocol, considering a significance level of 5%. Considering all tooth regions, the fluorescence intensity of the CR group was higher than the HR and control groups, both in DEJ and underlying dentin (p <0.001). In addition, the fluorescence intensity was higher in underlying dentin when compared to DEJ in all groups (p <0.001). Considering each tooth region, a statistically significant difference between CR and HR was only observed in the pit region of underlying dentin (p <0.001). Significant and positive correlations between fluorescence intensities in DEJ and underlying dentin were also observed (p <0.001). Experimental radiotherapy influenced the activation of gelatinases, as well as exposure to the conventional protocol can trigger a higher activation of gelatinases when compared to hypofractionated, both in DEJ and underlying dentin.
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Affiliation(s)
- Paula Iáddia Zarpellon Barbosa
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
| | - Ricardo Barbosa Lima
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
| | - Lucas Masaru Marubayashi
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
| | - Harley Francisco de Oliveira
- Department of Internal Medicine, Ribeirão Preto School of Medicine, University of São Paulo (FMRP/USP), Ribeirão Preto, São Paulo, Brazil
| | - Raquel Assed Bezerra da Silva
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
| | - Paulo Nelson-Filho
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
| | - Maya Fernanda Manfrin Arnez
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
| | - Francisco Wanderley Garcia de Paula-Silva
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
| | - Alexandra Mussolino de Queiroz
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo(FORP/USP), Ribeirão Preto, São Paulo, Brazil
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Almeida-Junior LAD, Araujo LDC, Lamarque GCC, Arnez MFM, Kapila YL, Silva LABD, Paula-Silva FWGD. Reparative Dentin Formation Following Dental Pulp Capping is Mediated by TNFR1 In Vivo. J Endod 2023; 49:1329-1336. [PMID: 37423584 DOI: 10.1016/j.joen.2023.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 06/20/2023] [Accepted: 06/25/2023] [Indexed: 07/11/2023]
Abstract
INTRODUCTION Tumor necrosis factor (TNF)-α is a pro-inflammatory cytokine that promotes biomineralization in vitro in dental pulp cells. However, the role of TNF-α-TNF receptor 1 (TNFR1) signaling in reparative dentin formation and related inflammatory pathways is not known. Therefore, the aim of this study was to evaluate the role of the TNF-α-TNFR1 axis in dental pulp repair following pulp capping in vivo. METHODS Dental pulp repair response of genetically deficient TNF-α receptor-1 mice (TNFR1-/-; n = 20) was compared with that of C57Bl6 mice (wild type [WT]; n = 20). Pulp capping was performed with mineral trioxide aggregate on the mandibular first molars of mice. After 7 and 70 days, tissues were collected and stained with hematoxylin and eosin for histopathological and histometric evaluation, and assessed by the Brown and Brenn methods for histomicrobiological analysis and by immunohistochemistry to localize TNF-α, Runt-related transcription factor 2, Dentin Sialoprotein (DSP) and Osteopontin (OPN) expression. RESULTS Compared with WT mice, TNFR1-/- mice showed significantly decreased reparative dentin formation with a lower mineralized tissue area (P < .0001). Unlike WT mice, TNFR1-/- mice also exhibited significant dental pulp necrosis, neutrophil recruitment, and apical periodontitis formation (P < .0001) without bacterial tissue invasion. TNFR1-/- animals further exhibited decreased TNF-α, DSP, and OPN expression (P < .0001), whereas Runt-related transcription factor 2 expression was unchanged (P > .05). CONCLUSION The TNF-α-TNFR1 axis is involved in reparative dentin formation following dental pulp capping in vivo. Genetic ablation of TNFR1 modified the inflammatory process and inhibited the expression of the DSP and OPN mineralization proteins, which culminated in dental pulp necrosis and development of apical periodontitis.
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Affiliation(s)
| | - Lisa Danielly Curcino Araujo
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Giuliana Campos Chaves Lamarque
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Maya Fernanda Manfrin Arnez
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Yvonne Lorraine Kapila
- Department of Biosystems and Function, Section of Periodontics, School of Dentistry, University of California Los Angeles, Los Angeles, California
| | - Léa Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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de Carvalho MS, de Almeida-Junior LA, Ribeiro YJS, Arnez MFM, da Silva RAB, de Carvalho FK, Paula-Silva FWG. Detection of Apical Dental Resorption Caused by Endodontic Infection in Mice Using Fluorescence and Bright-Field Microscopy. Scanning 2023; 2023:4619503. [PMID: 37101708 PMCID: PMC10125736 DOI: 10.1155/2023/4619503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 11/12/2022] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
The aim of this study was to evaluate the sensitivity, specificity, and predictive values of the fluorescence microscopy method in the detection of apical dental reabsorption after induction of apical periodontitis in animal models. Forty-first molars of mice, aged 6 to 8 weeks, had their root canals exposed to the oral environment or were maintained healthy as controls (n = 20). After 14 and 42 days, mice were euthanized and tissues were collected for histological evaluation by means of bright field and fluorescence microscopy. The accuracy of fluorescence microscopy in identifying apical external dental resorption was investigated using a diagnostic validation test based on the sensitivity (S) and specificity (E) properties. Bright-field microscopy revealed a higher number of specimens with scores of 1 to 3 - absence of apical dental resorption (n = 29; 52%), while fluorescence microscopy revealed a higher number of specimens with scores of 4 to 6 - presence of apical dental resorption (n = 37; 66%). Out of 56 specimens, 26 were TP, 11 were FP, and 19 were TN. No FN result was observed. Fluorescence microscopy presented a sensitivity value of 1, similar to the bright-field method, while specificity was lower (0.633). The accuracy of the fluorescent method to detect apical dental resorption was 0.804. Fluorescence microscopy revealed a higher number of false positive apical dental resorption than bright-field microscopy. The detection of apical dental resorption was not impacted by the sensitivity of the method but by its specificity.
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Affiliation(s)
- Marcio Santos de Carvalho
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil
| | | | - Yuri Jivago Silva Ribeiro
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil
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Lorencetti-Silva F, Arnez MFM, Thomé JPDQ, de Carvalho MS, de Carvalho FK, de Queiroz AM, Faccioli LH, Paula-Silva FWG. Leukotriene B4 Loaded in Microspheres Inhibits Osteoclast Differentiation and Activation. Braz Dent J 2022; 33:35-45. [PMID: 36287497 PMCID: PMC9645171 DOI: 10.1590/0103-6440202204827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 07/28/2022] [Indexed: 11/23/2022] Open
Abstract
To investigate osteoclast formation in vivo and if leukotriene B4 (LTB4) loaded in microspheres (MS) could be used as a therapeutical strategy to promote a sustained delivery of the mediator and prevent osteoclast differentiation. Methods: In vivo, apical periodontitis was induced in mice to investigate osteoclast differentiation and signaling in absence of 5-lipoxygenase (5-LO). In vitro, LTB4-MS were prepared using an oil-in-water emulsion solvent extraction-evaporation process. Characterization and efficiency of LTB4 encapsulation were investigated. J774A.1 macrophages were cultured in the presence of monocyte colony-stimulating factor (M-CSF) and ligand for receptor activator of nuclear factor kappa B (RANKL) and then stimulated with LTB4-MS. Cytotoxicity, in vitro MS-LTB4 uptake, osteoclast formation and gene expression were measured. Results: We found that 5-LO negatively regulates osteoclastic formation in vivo during apical periodontitis development. In vitro, LTB4-MS were up-taken by macrophages and were not cytotoxic to the cells. LTB4-MS inhibited osteoclast formation and the synthesis of osteoclastogenic genes Acp5, Mmp9, Calcr and Ctsk. LTB4-MS inhibited differentiation of macrophages into an osteoclastic phenotype and cell activation under M-CSF and RANKL stimulus.
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Affiliation(s)
- Francine Lorencetti-Silva
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil., Universidade de Rio Verde, Rio Verde, Goiás, Brasil
| | - Maya Fernanda Manfrin Arnez
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - João Pedro de Queiroz Thomé
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil., Faculdade de Ciências da Saúde de Barretos Dr. Paulo Prata, Barretos, SP, Brazil
| | - Marcio Santos de Carvalho
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Fabrício Kitazono de Carvalho
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Alexandra Mussolino de Queiroz
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Lúcia Helena Faccioli
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas da Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Francisco Wanderley Garcia Paula-Silva
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil.,Departamento de Análises Clínicas, Toxicológicas e Bromatológicas da Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
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de Carvalho MS, de Almeida-Junior LA, Silva-Sousa AC, Damião Sousa-Neto M, Lucisano MP, Arnez MFM, da Silva LAB, Paula-Silva FWG. Absence of tumor necrosis factor receptor 1 inhibits osteoclast activity in apical dental resorption caused by endodontic infection in mice. J Endod 2022; 48:1400-1406. [PMID: 35964707 DOI: 10.1016/j.joen.2022.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 07/25/2022] [Accepted: 08/06/2022] [Indexed: 02/06/2023]
Abstract
INTRODUCTION To evaluate osteoclastogenesis and dental resorption resulting from endodontic infection in wild-type (WT) and tumor necrosis factor receptor 1 genetically deficient (TNFR1 KO) mice. METHODS After approval by the Ethics Committee on the use of Animals, 40 mice were distributed into two experimental groups based on periods: 14 days (n=10 WT mice; n=10 TNFR1 KO mice) and 42 days (n=10 WT mice; n=10 TNFR1 KO mice). After these periods, morphometrics analysis was done using bright field and fluorescence microscopy and tartrate-resistant acid phosphatase histoenzymology to identify osteoclasts. One-way analysis of variance followed by Tukey's post-hoc test was used for the statistical analysis (a=0.05). RESULTS WT mice in the 42-day period had a greater resorption in the apical region distal root of the first molar than TNFR1 KO mice (p<0.05). On the other hand, TNFR1 KO mice showed a smaller number of osteoclasts on the dental surface than WT mice (p<0.05). CONCLUSION WT mice had more extensive bone and apical dental resorptions and a larger number of osteoclasts on the tooth surface than TNFR1 KO mice.
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Affiliation(s)
- Marcio Santos de Carvalho
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | | | - Alice Corrêa Silva-Sousa
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Manoel Damião Sousa-Neto
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Marília Pacífico Lucisano
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Maya Fernanda Manfrin Arnez
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Léa Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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Ribeiro YJS, Ferreira LG, Nelson-Filho P, Arnez MFM, Paula-Silva FWG. Influence of digital media in the oral health education of mother-child pairs: study protocol of a parallel double-blind randomized clinical trial. Trials 2022; 23:639. [PMID: 35945570 PMCID: PMC9361624 DOI: 10.1186/s13063-022-06602-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 07/26/2022] [Indexed: 11/10/2022] Open
Abstract
Background Dental caries is the most common non transmissible chronic disease in childhood and the control of dental biofilm in children is one of the greatest challenges in oral disease prevention. Digital media applications can help patients in improving their oral hygiene performance and reducing the number of appointments due to pain and discomfort reasons. This study aims to investigate the use of an smartphone application (WhatsApp) to deliver oral health education to mother-child pairs, with the ultimate goal of controlling dental biofilm and caries through digital activities focused on oral hygiene. Methods This study was designed as a randomized, double-blind, parallel clinical trial involving 100 pairs of mothers and children (6–12 years old). The mothers and children will be randomly allocated to the control group (n = 50 pairs), who will receive a single visit conventional oral health education, or to the experimental group (n = 50 pairs), who will receive both a single visit conventional oral health education and educational videos through WhatsApp Messenger, twice a week. Before randomization of the groups and after the intervention, pairs will be evaluated regarding to plaque index (VPI), gingival bleeding index (GBI), and number of decayed, missing and filled permanent or primary teeth (DMF-T) modified by the inclusion of active non-cavitated carious lesions (Nyvad criteria). Socioeconomic data, dental history, and oral health literacy will obtained using questionnaires (Oral Health Literacy Assessment Task for Paediatric Dentistry; BOHLAT-P). Chi-square, Student’s t-test, paired Student’s t-test, Mann-Whitney, and Friedman tests will be used with a 5% significance level. Discussion This intervention proposal is designed to motivate behavioral change in mother-child pairs. We hypothesize that adding digital media to traditional oral health programs will provoke improvements in oral hygiene behavior and health outcomes. To our knowledge, this is the first study evaluating the effect of educational videos communicated by digital media (WhatsApp) on the oral health of mother-child pairs evaluated by long-term dental examinations. In addition, we will assess the maternal level of comprehension of the provided information via a literacy assessment tool. The clinical trial is registered at the Brazilian Registry of Clinical Trials (No. RBR-7s8bw6m). Supplementary Information The online version contains supplementary material available at 10.1186/s13063-022-06602-4.
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Affiliation(s)
- Yuri Jivago Silva Ribeiro
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Bloco M, Sala 28, São Paulo, Ribeirão Preto, SP, Brazil
| | - Luanna Gonçalves Ferreira
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Bloco M, Sala 28, São Paulo, Ribeirão Preto, SP, Brazil
| | - Paulo Nelson-Filho
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Bloco M, Sala 28, São Paulo, Ribeirão Preto, SP, Brazil
| | - Maya Fernanda Manfrin Arnez
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Bloco M, Sala 28, São Paulo, Ribeirão Preto, SP, Brazil
| | - Francisco Wanderley Garcia Paula-Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Bloco M, Sala 28, São Paulo, Ribeirão Preto, SP, Brazil.
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Molena KF, Lima RB, Fortunato TCDS, Queiroz AMD, Carvalho FKD, Arnez MFM, Paula-Silva FWG. Case Report: Applicability of sedation with nitrous oxide in the management of molar incisor hypomineralization in pediatric patients. Front Dent Med 2022. [DOI: 10.3389/fdmed.2022.962113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Patients with molar-incisor hypomineralization (MIH) may manifest tooth hfypersensitivity and difficulties in undergoing dental treatment, including fear, anxiety, and behavior problems in the dental office. Then, the objective of this study was to report a clinical case series using inhalation sedation with nitrous oxide and oxygen as a clinical strategy in the management of MIH pediatric patients during dental treatment. Pediatric patients and their legal guardians were properly informed and data were extracted from clinical charts. Six clinical cases were included, whose patients were between 8 and 12 years old. Of these, 4 were female. The indication of moderate sedation took into account the clinical difficulties related to patients with MIH, such as obtaining anesthesia and cooperation, in addition to odontophobia and dental anxiety. All patients were carefully examined to undergo the sedation technique, including medical history and previous experiences with nitrous oxide inhalation sedation, as well as the vital signs were properly evaluated before, during and after the procedures. The nitrous oxide concentration ranged between 30% and 60%. The procedures were restorative, endodontic or surgical (extractions). In general, the use of sedation contributed to the performance of dental procedures. The use of inhaled sedation helped in behavioral management and during the treatment, increasing the effectiveness of local anesthesia. Patients were cooperative for treatment, while no adverse effects or complications related to sedation were observed. Thus, for the patients in this case series, the use of inhalation sedation with nitrous oxide and oxygen contributed to the clinical management of patients with MIH.
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Lorencetti-Silva F, Sales LS, Lamarque GDCC, Caixeta GA, Arnez MFM, Faccioli LH, Paula-Silva FWG. Effects of inflammation in dental pulp cell differentiation and reparative response. Front Dent Med 2022. [DOI: 10.3389/fdmed.2022.942714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The responsiveness of the dentin-pulp complex is possible due to the stimulation of dental pulp cells, which begin to synthesize and secrete dentin matrix. The inflammatory process generated by harmful stimuli should be understood as a natural event of the immune response, resulting in the recruitment of hematopoietic cells, which cross the endothelial barrier and reach the site affected by the injury in order to eliminate the damage and provide an appropriate environment for the restoration of homeostasis. The repair process occurs in the presence of adequate blood supply, absence of infection, and with the participation of pro-inflammatory cytokines, growth factors, extracellular matrix components, and other biologically active molecules. Prostaglandins and leukotrienes are bioactive molecules derived from the metabolism of arachidonic acid, as a result of a variable range of cellular stimuli. The aim of this review is to describe the process of formation and biomineralization of the dentin-pulp complex and how pro-inflammatory events can modify this response, with emphasis on the lipid mediators prostaglandins and leukotrienes derived from arachidonic acid metabolism.
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Leme RD, Lamarque GDCC, Bastos LA, Arnez MFM, Paula-Silva FWG. Minimal Intervention Dentistry: Biocompatibility and Mechanism of Action of Products for Chemical-Mechanical Removal of Carious Tissue. Front Dent Med 2022. [DOI: 10.3389/fdmed.2022.851331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Conventional method for removal of carious tissue using low speed drills usually induce noise and vibration, in addition to thermal and pressure effects that can be harmful to the pulp tissue and cause fear in children. Therefore, several alternative methods are being developed to try to minimize the unpleasant perception of the patient during caries removal. Chemical-mechanical removal of carious tissue goal is to selectively remove the carious lesion, which reduces the amount of bacteria inside the cavity without removing the tissue susceptible to remineralization. This method is also able to minimize the tactile perception by the patient during the manipulation of the lesion compared to the conventional method, and, therefore, it has been widely accepted among phobic patients, children and special needs patients. Due to the close relationship between dentin and pulp tissue, all injuries imposed on this dentin may have repercussions on the underlying pulp connective tissue. The morphological aspects of remaining dentin favor the diffusion of chemical components of dental materials, which can be toxic to the pulp tissue or even negatively interfere in the reparative process. Thus, considering the proximity between the applied material and the underlying pulp tissue, especially in deep cavities, there is a need to assess the biological behavior of dental materials against pulp cells, since aggressions to the pulp tissue can be caused not only by metabolites from microorganisms involved in dental caries but also by components that are released from these products. This subject was explored in this narrative literature review.
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11
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Arnez MFM, Monteiro PM, Paula-Silva FWG, Dessotti GB, Menezes LMD, Küchler EC, Alves SYF, Matsumoto MAN, Stuani MBS. Impact of cigarette smoke on osteogenic and osteoclast signaling in middle palatal suture. Braz Dent J 2022; 33:99-108. [PMID: 35508042 PMCID: PMC9645154 DOI: 10.1590/0103-6440202203966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 05/05/2021] [Indexed: 11/30/2022] Open
Abstract
Considering that smoking is a public health problem that has been growing among
adolescents, the aim of this study was to investigate the impact of cigarette
smoke on osteogenic and osteoclastogenic signaling in middle palatal suture of
rats. Male Wistar rats exposed (n = 30) or not to cigarette smoke (n = 30) were
used. Exposure to smoke was carried out for two daily periods of 3 minutes each,
with an interval of 12 hours between exposures. After the experimental periods
of 3, 7, 14 and 21 days, the animals were euthanized. The collected tissues were
analyzed using light microscopy and real-time RT-PCR was performed to
investigate gene expression. The data obtained were compared using the Kruskal
Wallis and Dunn tests (⍺ = 5%). Morphologically, there were no significant
changes in the middle palatal suture of rats exposed or not to cigarette smoke
during 3, 7, 14 and 21 days (p> 0.05). On the other hand, osteoclastogenic
signaling was increased in animals exposed to smoke and was characterized by a
higher production of RANKL at 3 and 14 days (p <0.05), with no change in the
synthesis of RANK and osteoprotegerin (p> 0.05). Interestingly, in the
exposed animals, an early increase in the synthesis of osteocalcin, bone
sialoprotein and osteopontin was also identified at 3 days of exposure (p
<0.05), not sustained over time (p> 0.05). Cigarette smoke modulates
osteogenic and osteoclastogenic signaling in the middle palatal suture of young
rats, although morphological changes have not been evidenced.
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12
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Huamán SD, Arnez MFM, Oliveira FMMPCD, Rossi AD, Silva LAB, Paula-Silva FWG. In Vivo Detection of External Apical Root Resorption Induced by Apical Periodontitis Using Periapical Radiography and Cone-Beam Computed Tomography. Pesqui Bras Odontopediatria Clín Integr 2022. [DOI: 10.1590/pboci.2022.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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13
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Petean IBF, Almeida-Junior LA, Arnez MFM, Queiroz AM, Silva RAB, Silva LAB, Faccioli LH, Paula-Silva FWG. Celecoxib treatment dampens LPS-induced periapical bone resorption in a mouse model. Int Endod J 2021; 54:1289-1299. [PMID: 33403674 DOI: 10.1111/iej.13472] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 12/30/2020] [Accepted: 01/04/2021] [Indexed: 12/29/2022]
Abstract
AIM To evaluate the efficacy of selective and nonselective inhibitors of cyclooxygenase-2 enzymes in the treatment of experimental apical periodontitis induced by bacterial lipopolysaccharide (LPS) in vivo in a mouse model. METHODOLOGY Thirty-six C57BL/6 mice were used. After access cavity preparation, a solution containing E. coli LPS (1.0 µg µL-1 ) was inoculated into the root canals of the mandibular and maxillary right first molars (n = 72) After 30 days, apical periodontitis was established and the animals were systemically treated with celecoxib, a selective COX-2 inhibitor (15 mg kg-1 ), or indomethacin, a nonselective COX-2 inhibitor (5 mg kg-1 ), for 7 and 14 days. Blocks containing teeth and bone were removed for histopathological and histometric analyses (haematoxylin and eosin), evaluation of osteoclasts numbers (tartrate-resistant acid phosphatase enzyme - TRAP) and immunohistochemistry for RANK, RANKL and OPG. Gene expression was performed using reverse transcription and real-time polymerase chain reaction (qRT-PCR) for RANK, RANKL, OPG, TRAP, MMP-9, cathepsin K and calcitonin receptor. Histopathological, histometric, TRAP, immunohistochemistry and qRT-PCR data were evaluated using Kruskal-Wallis followed by Dunn's test (α = 0.05). RESULTS Systemic administration of celecoxib for 7 and 14 days prevented periapical bone resorption (P < 0.0001), differently from indomethacin that exacerbated bone resorption at 7 days (P < 0.0001) or exerted no effect at 14 days (P = 0.8488). Celecoxib treatment reduced osteoclast formation in apical periodontitis, regardless of the period of treatment (P < 0.0001 for 7 days and P = 0.026 for 14 days). Administration of celecoxib or indomethacin differentially modulated the expression of genes involved in bone resorption. At 7 days, celecoxib and indomethacin treatment significantly inhibited expression of mRNA for cathepsin K (P = 0.0005 and P = 0.016, respectively) without changing TRAP, MMP-9 and calcitonin receptor gene expression. At 14 days, celecoxib significantly inhibited expression of mRNA for MMP-9 (P < 0.0001) and calcitonin receptor (P = 0.004), whilst indomethacin exerted no effect on MMP-9 (P = 0.216) and calcitonin receptor (P = 0.971) but significantly augmented cathepsin K gene expression (P = 0.001). CONCLUSIONS The selective COX-2 inhibitor celecoxib reduced osteoclastogenic signalling and activity that dampened bone resorption in LPS-induced apical periodontitis in mice, with greater efficacy than the nonselective inhibitor indomethacin.
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Affiliation(s)
- I B F Petean
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - L A Almeida-Junior
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - M F M Arnez
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - A M Queiroz
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - R A B Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - L A B Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - L H Faccioli
- Laboratório de Inflamação e Imunologia das Parasitoses, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - F W G Paula-Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brasil.,Laboratório de Inflamação e Imunologia das Parasitoses, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
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Stuani AS, Silvano PRÁ, Arnez MFM, Mira PCDS, Gorita MC, Monteiro PM, Marsumoto MAN, Hirata MH, Menezes LMD, Stuani MBS. VEGF and FGF-2 Released In Palatal Suture after Rapid Maxillary Expansion (RME). Braz Dent J 2021; 32:98-103. [PMID: 33914010 DOI: 10.1590/0103-6440202103527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 08/24/2020] [Indexed: 11/22/2022] Open
Abstract
Vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (FGF-2) have the ability to increase vascular proliferation and permeability. The aim of this study was to quantify the release of two diffusible angiogenic growth factors (VEGF and FGF-2) after rapid maxillary expansion (RME). Thirty animals were randomly assigned to two groups. Control group (5 rats - intact suture) and Experimental groups (25 rats with RME) which were evaluated in different periods of treatment. Five animals were euthanized in different periods of healing at 0, 1, 2, 3, 5 and 7 days after RME. RT-PCR was used to evaluate the gene expression of angiogenic growth factors released on different periods of study. Data were submitted to statistical analysis using ANOVA followed by Tukey test and significance was assumed at a=0.05. RT-PCR showed that mRNAs of VEGF and FGF-2 were expressed in intact palatal suture tissue. mRNAs of VEGF and FGF-2 was upregulated in early periods (24 h) after RME (p<0.001 and p<0.01, respectively). The molecular levels of VEGF never returned to its original baseline values, and FGF-2 expression decreased up to day 5 (p<0.001) and suddenly increased at day 7, returning to its original level. RME increased VEGF secretion, but decreased FGF-2 secretion when compared to intact tissue. The results showed that these angiogenic growth factors are released and regulated in the palatal suture tissue after RME and could make an important contribution to the knowledge of overall reparative response of the suture tissue during the bone remodeling process.
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Affiliation(s)
- Adriana Sasso Stuani
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, USP - Universidade de São Paulo, São Paulo, SP, Brazil
| | - Paula Regina Ávila Silvano
- Department of Orthodontic, School of Dentistry of Ribeirao Preto, USP - Universidade de São Paulo, Ribeirao Preto, SP, Brazil
| | - Maya Fernanda Manfrin Arnez
- Department of Orthodontic, School of Dentistry of Ribeirao Preto, USP - Universidade de São Paulo, Ribeirao Preto, SP, Brazil
| | - Paôla Caroline da Silva Mira
- Department of Orthodontic, School of Dentistry of Ribeirao Preto, USP - Universidade de São Paulo, Ribeirao Preto, SP, Brazil
| | - Maria Cecília Gorita
- Department of Orthodontic, School of Dentistry of Ribeirao Preto, USP - Universidade de São Paulo, Ribeirao Preto, SP, Brazil
| | - Patrícia Maria Monteiro
- Department of Orthodontic, School of Dentistry of Ribeirao Preto, USP - Universidade de São Paulo, Ribeirao Preto, SP, Brazil
| | - Mirian Aiko Nakame Marsumoto
- Department of Orthodontic, School of Dentistry of Ribeirao Preto, USP - Universidade de São Paulo, Ribeirao Preto, SP, Brazil
| | - Mario Hiroshi Hirata
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, USP - Universidade de São Paulo, São Paulo, SP, Brazil
| | - Luciane Macedo de Menezes
- Department of Orthodontics, Dental Program - School of Health and Life Sciences, PUCRS - Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Maria Bernadete Sasso Stuani
- Department of Orthodontic, School of Dentistry of Ribeirao Preto, USP - Universidade de São Paulo, Ribeirao Preto, SP, Brazil
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15
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Silva LABD, Hidalgo LRDC, de Sousa-Neto MD, Arnez MFM, Barnett F, Hernández PMG, Faccioli LH, Paula-Silva FWG. Cytotoxicity and Inflammatory Mediators Release by Macrophages Exposed to Real Seal XT and Sealapex Xpress. Braz Dent J 2021; 32:48-52. [PMID: 33914002 DOI: 10.1590/0103-6440202103330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/29/2020] [Indexed: 11/22/2022] Open
Abstract
This study evaluated the cytotoxicity of Sealapex Xpress and Real Seal XT and their effect on macrophage activation. J774.1 macrophages were incubated with Sealapex Xpress and Seal Real XT (0.1, 1.0, and 10 mg/mL) for 24 and 48 h. Cell viability was assessed by the MTT assay and macrophage activation was measured by pro- and anti-inflammatory cytokine production using ELISA. Data were analyzed using one-way ANOVA and Tukey's post-test (a=0.05). Cell viability was not affected with 0.1 or 1.0 mg/mL of extracts of Sealapex Xpress and Real Seal XT at 24 and 48 h (p>0.05), but was significantly lower when cells were exposed to 10 mg/mL of both sealers (p<0.05). Sealapex Xpress inhibited the production of TNF-a, whereas Real Seal XT induced TNF-a secretion at 24 h (p<0.05). IL-6 production was induced by Real Seal XT, but not by Sealapex Xpress (p<0.05). Real Seal XT and Sealapex Xpress induced the secretion of anti-inflammatory IL-10. IL-4 was not detected in any group. In conclusion, both sealers had low toxicity but differentially activated macrophages. Macrophage activation by Sealapex Xpress was characterized by inhibition of TNF-a and induction of IL-10, whereas Real Seal XT induced IL-6 solely.
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Affiliation(s)
- Léa Assed Bezerra da Silva
- Department of Paediatric Clinics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Lídia Regina da Costa Hidalgo
- Department of Paediatric Clinics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Manoel Damião de Sousa-Neto
- Department of Paediatric Clinics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Maya Fernanda Manfrin Arnez
- Department of Paediatric Clinics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Frederic Barnett
- Department of Dental Medicine, Albert Einstein Medical Center, Philadelphia, PA, USA
| | | | - Lúcia Helena Faccioli
- Department of Paediatric Clinics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.,Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão PretoSP, Brazil
| | - Francisco Wanderley Garcia Paula-Silva
- Department of Paediatric Clinics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.,Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão PretoSP, Brazil
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Ribeiro-Santos FR, Arnez MFM, de Carvalho MS, da Silva RAB, Politi MPL, de Queiroz AM, Nelson-Filho P, da Silva LAB, Faccioli LH, Paula-Silva FWG. Effect of non-steroidal anti-inflammatory drugs on pulpal and periapical inflammation induced by lipopolysaccharide. Clin Oral Investig 2021; 25:6201-6209. [PMID: 33791868 DOI: 10.1007/s00784-021-03919-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/28/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVES The objective of this study was to evaluate the effect of non-steroidal anti-inflammatory drugs (NSAIDs) in controlling pulpal and periapical inflammation in vivo as a potential coadjutant systemic therapy for pulpitis. MATERIALS AND METHODS A suspension containing E. coli lipopolysaccharide (LPS; 1.0 μg/μL) was inoculated into the pulp chamber of the first molars of C57BL/6 mice (n = 72), and the animals were treated daily with indomethacin or celecoxib throughout the experimental periods. After 7, 14, 21, and 28 days, the tissues were removed for histopathological, histoenzymology, histometric, and immunohistochemical evaluation. RESULTS Inoculation of LPS into the pulp chamber induced the synthesis of the enzyme cyclooxygenase-2 (COX-2) in dental pulp and periapical region. Indomethacin and celecoxib treatment changed the profile of inflammatory cells recruited to dental pulp and to the periapex, which was characterized by a higher mononuclear cell infiltrate, compared to LPS inoculation alone which recruited a higher amount of polymorphonuclear neutrophils. Administration of indomethacin for 28 days resulted in the development of apical periodontitis and increased osteoclast recruitment, unlike celecoxib. CONCLUSIONS NSAIDs indomethacin and celecoxib changed the recruitment of inflammatory cells to a mononuclear profile upon inoculation of LPS into the pup chamber, but indomethacin enhanced periapical bone loss whereas celecoxib did not. CLINICAL RELEVANCE Celecoxib, a selective COX-2 inhibitor, can change the profile of inflammatory cells recruited to the dental pulp challenged with LPS and might a be potential systemic coadjutant for treatment of pulpitis.
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Affiliation(s)
- Fernanda Regina Ribeiro-Santos
- School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Ribeirão Preto, São Paulo, Brazil
- Universidade de Pernambuco, Arco Verde, Pernambuco, Brazil
| | - Maya Fernanda Manfrin Arnez
- School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Ribeirão Preto, São Paulo, Brazil
| | - Marcio Santos de Carvalho
- School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Ribeirão Preto, São Paulo, Brazil
| | - Raquel Assed Bezerra da Silva
- School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Ribeirão Preto, São Paulo, Brazil
| | - Marília Pacífico Lucisano Politi
- School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Ribeirão Preto, São Paulo, Brazil
| | - Alexandra Mussolino de Queiroz
- School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Ribeirão Preto, São Paulo, Brazil
| | - Paulo Nelson-Filho
- School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Ribeirão Preto, São Paulo, Brazil
| | - Léa Assed Bezerra da Silva
- School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Ribeirão Preto, São Paulo, Brazil
| | - Lúcia Helena Faccioli
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Francisco Wanderley Garcia Paula-Silva
- School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n. CEP 14040-904, Ribeirão Preto, São Paulo, Brazil.
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
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Paula-Silva FWG, Arnez MFM, de Campos Chaves Lamarque G, Petille R, Ribeiro-Santos FR, de Sena MF, Nelson-Filho P, da Silva LAB. Osteoclast formation, inflammation, and matrix metalloproteinase-9 are downregulated in bone repair following root canal treatment in dogs teeth. Clin Oral Investig 2021; 25:4699-4707. [PMID: 33449195 DOI: 10.1007/s00784-021-03784-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 01/06/2021] [Indexed: 01/26/2023]
Abstract
OBJECTIVES The aim of this study was to investigate the inflammatory infiltrate, osteoclast formation, and expression of MMP-9 during the healing phase following root canal treatment in teeth with apical periodontitis. MATERIALS AND METHODS Apical periodontitis was induced in dogs teeth, and root canal treatment was performed in a single visit or using calcium hydroxide as intracanal medication. One hundred and eighty days following treatment the presence of inflammation was examined, and the tissues were stained to detect osteoclasts by means of a tartrate resistant alkaline phosphatase (TRAP) assay. Synthesis of MMP-9 was detected using Western blotting and immunohistochemistry. RESULTS Teeth with apical periodontitis that had root canal therapy performed in a single visit presented a higher synthesis of MMP-9 compared with root canal treatment using calcium hydroxide. Treatment with calcium hydroxide resulted in a reduced amount of inflammatory cells and MMP-9 positive cells. Osteoclast formation, the number of MMP-9 positive osteoclasts and cementocytes, was reduced following root canal treatment, regardless of the root canal treatment protocol used. CONCLUSION Root canal treatment reduced the amount of inflammatory cells and osteoclasts in periapical area. The use of calcium hydroxide as intracanal medication resulted in a lower synthesis of MMP-9, though the number of osteoclasts and MMP-9 positive osteoclasts were similar between the groups. CLINICAL RELEVANCE Periapical bone repair following root canal treatment is impacted by therapy performed either in single visit or using calcium hydroxide dressing measured by inflammatory cell recruitment, osteoclast formation, and MMP-9 synthesis.
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Affiliation(s)
| | - Maya Fernanda Manfrin Arnez
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | | | - Renato Petille
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Fernanda Regina Ribeiro-Santos
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- Universidade de Pernambuco, Arco Verde, PE, Brazil
| | - Marina Fernandes de Sena
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Paulo Nelson-Filho
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Léa Assed Bezerra da Silva
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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De Paula e Silva FWG, Arnez MFM, De Almeida-Júnior LA, De Carvalho MS, Petille R, De Queiroz AM, Bezerra da Silva LA. Metaloproteinases da matriz: papel no desenvolvimento das lesões periapicais e modulação após tratamento endodôntico. R Fac Odontol Porto Alegre 2020. [DOI: 10.22456/2177-0018.101548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Introduction: Apical periodontitis represents a local immune response directed against the progression of microorganisms from the dental pulp to the apical foramen and periapical tissues, which results in bone and dental resorption. The aim of this review is to describe the expression of this group of proteases in apical periodontitis and its modulation during the periapical healing phase following root canal treatment. Literature review: The pathogenesis of apical periodontitis involves degradation of several extracellular matrix components. Matrix metalloproteinases (MMPs) are expressed in response to specific stimuli by resident cells of connective tissue during tissue remodeling and by inflammatory cells that arrive into the surrounding tissues during inflammatory events. MMPs have been reported in apical periodontitis, either experimentally induced or obtained from humans and there is evidence that these enzymes show diff erent expression patterns in granulomas and periapical cysts. Root canal therapy is important for the reduction of periapical inflammation as well as the synthesis of MMPs, especially when using a calcium hydroxide-based dressing. Conclusion: Apical periodontitis show high expression of matrix metalloproteinases and root canal treatment results in less expression of MMPs when compared to untreated apical periodontitis.
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Paula-Silva FWG, Ribeiro-Santos FR, Petean IBF, Manfrin Arnez MF, Almeida-Junior LAD, Carvalho FKD, Silva LABD, Faccioli LH. Root canal contamination or exposure to lipopolysaccharide differentially modulate prostaglandin E 2 and leukotriene B 4 signaling in apical periodontitis. J Appl Oral Sci 2020; 28:e20190699. [PMID: 32401938 PMCID: PMC7213784 DOI: 10.1590/1678-7757-2019-0699] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 02/28/2020] [Indexed: 12/18/2022] Open
Abstract
Purpose To evaluate the kinetics of apical periodontitis development
in vivo
, induced either by contamination of the root canals by microorganisms from the oral cavity or by inoculation of bacterial lipopolysaccharide (LPS) and the regulation of major enzymes and receptors involved in the arachidonic acid metabolism. Methodology Apical periodontitis was induced in C57BL6 mice (n=96), by root canal exposure to oral cavity (n=48 teeth) or inoculation of LPS (10 µL of a suspension of 0.1 µg/µL) from
E. coli
into the root canals (n= 48 teeth). Healthy teeth were used as control (n=48 teeth). After 7, 14, 21 and 28 days the animals were euthanized and tissues removed for histopathological and qRT-PCR analyses. Histological analysis data were analyzed using two-way ANOVA followed by Sidak’s test, and qRT-PCR data using two-way ANOVA followed by Tukey’s test (α=0.05). Results Contamination by microorganisms led to the development of apical periodontitis, characterized by the recruitment of inflammatory cells and bone tissue resorption, whereas inoculation of LPS induced inflammatory cells recruitment without bone resorption. Both stimuli induced mRNA expression for cyclooxygenase-2 and 5-lipoxygenase enzymes. Expression of prostaglandin E 2 and leukotriene B 4 cell surface receptors were more stimulated by LPS. Regarding nuclear peroxisome proliferator-activated receptors (PPAR), oral contamination induced the synthesis of mRNA for PPARδ, differently from inoculation of LPS, that induced PPARα and PPARγ expression. Conclusions Contamination of the root canals by microorganisms from oral cavity induced the development of apical periodontitis differently than by inoculation with LPS, characterized by less bone loss than the first model. Regardless of the model used, it was found a local increase in the synthesis of mRNA for the enzymes 5-lipoxygenase and cyclooxygenase-2 of the arachidonic acid metabolism, as well as in the surface and nuclear receptors for the lipid mediators prostaglandin E2 and leukotriene B4.
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Affiliation(s)
| | - Fernanda Regina Ribeiro-Santos
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Igor Bassi Ferreira Petean
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Maya Fernanda Manfrin Arnez
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | | | - Fabrício Kitazono de Carvalho
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Léa Assed Bezerra da Silva
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Lúcia Helena Faccioli
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
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Paula-Silva FWG, Arnez MFM, Petean IBF, Almeida-Junior LA, da Silva RAB, da Silva LAB, Faccioli LH. Effects of 5-lipoxygenase gene disruption on inflammation, osteoclastogenesis and bone resorption in polymicrobial apical periodontitis. Arch Oral Biol 2020; 112:104670. [DOI: 10.1016/j.archoralbio.2020.104670] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 12/23/2019] [Accepted: 01/27/2020] [Indexed: 01/18/2023]
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Bastos LA, Silva FL, Thomé JPDQ, Arnez MFM, Faccioli LH, Paula-Silva FWG. Effects of Papain-Based Gel Used For Caries Removal on Macrophages and Dental Pulp Cells. Braz Dent J 2019; 30:484-490. [PMID: 31596333 DOI: 10.1590/0103-6440201902560] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 06/09/2019] [Indexed: 11/21/2022] Open
Abstract
Papain-based gel is used for chemical-mechanical caries removal and present antimicrobial and anti-inflammatory activities. However, its effects on dental pulp cells and on macrophages remains largely unknown. Therefore, the aim of this study was to investigate whether the papain-based gel Papacárie Duo® acts as an immunomodulator in lipopolysaccharide (LPS)-activated macrophages and its effects on dental pulp cells . J774.1 macrophage and OD-21 dental pulp cells were stimulated with 0.5% and 5% of Papacárie Duo®, following pre-treatment or not with LPS. After 24 h, a lactate dehydrogenase assay was used to measure cytotoxicity, a tetrazolium-based colorimetric assay (MTT) was used to measure cell viability, and qRT-PCR was used to analyze relative gene expression of Ptgs2, Il10, Tnf, Mmp9, Runx2, Ibsp and Spp1. Papacárie Duo® was cytotoxic and reduced cell viability at 5% but not at 0.5% in both cultures. In macrophages, Papacárie Duo® increased the expression Il10 and LPS-induced Ptgs2, but it did not affect Tnf or Mmp9. In OD-21 cells, Papacárie Duo® inhibited Runx2 and Ibsp expression, but stimulated Spp1 expression. Papain-based gel presented a concentration dependent cytotoxicity, without affecting cell viability, for dental pulp cells and macrophages. Interestingly, the gel presented an inhibitory effect on pulp cell differentiation but modulated the activation of macrophages stimulated with LPS. We speculate that in dental pulp tissue, Papacárie Duo® would impair reparative dentinogenesis but could activate macrophages to perform their role in defense and inflammation.
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Affiliation(s)
- Laura Alves Bastos
- Department of Pediatric Clinics, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | | | | | | | - Lúcia Helena Faccioli
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Laboratório de Inflamação e Imunologia das Parasitoses, Faculdade USP -Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Ribeirão Preto, SP, Brazil
| | - Francisco Wanderley Garcia Paula-Silva
- Department of Pediatric Clinics, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.,Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Laboratório de Inflamação e Imunologia das Parasitoses, Faculdade USP -Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Ribeirão Preto, SP, Brazil
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Ribeiro-Santos FR, Silva GGD, Petean IBF, Arnez MFM, Silva LABD, Faccioli LH, Paula-Silva FWG. Periapical bone response to bacterial lipopolysaccharide is shifted upon cyclooxygenase blockage. J Appl Oral Sci 2019; 27:e20180641. [PMID: 31166414 PMCID: PMC6546268 DOI: 10.1590/1678-7757-2018-0641] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 12/17/2018] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVES Infection, inflammation and bone resorption are closely related events in apical periodontitis development. Therefore, we sought to investigate the role of cyclooxygenase (COX) in osteoclastogenesis and bone metabolism signaling in periapical bone tissue after bacterial lipopolysaccharide (LPS) inoculation into root canals. METHODOLOGY Seventy two C57BL/6 mice had the root canals of the first molars inoculated with a solution containing LPS from E. coli (1.0 mg/mL) and received selective (celecoxib) or non-selective (indomethacin) COX-2 inhibitor. After 7, 14, 21 and 28 days the animals were euthanized and the tissues removed for total RNA extraction. Evaluation of gene expression was performed by qRT-PCR. Statistical analysis was performed using analysis of variance (ANOVA) followed by post-tests (α=0.05). RESULTS LPS induced expression of mRNA for COX-2 (Ptgs2) and PGE2 receptors (Ptger1, Ptger3 and Ptger4), indicating that cyclooxygenase is involved in periapical response to LPS. A signaling that favours bone resorption was observed because Tnfsf11 (RANKL), Vegfa, Ctsk, Mmp9, Cd36, Icam, Vcam1, Nfkb1 and Sox9 were upregulated in response to LPS. Indomethacin and celecoxib differentially modulated expression of osteoclastogenic and other bone metabolism genes: celecoxib downregulated Igf1r, Ctsk, Mmp9, Cd36, Icam1, Nfkb1, Smad3, Sox9, Csf3, Vcam1 and Itga3 whereas indomethacin inhibited Tgfbr1, Igf1r, Ctsk, Mmp9, Sox9, Cd36 and Icam1. CONCLUSIONS We demonstrated that gene expression for COX-2 and PGE2 receptors was upregulated after LPS inoculation into the root canals. Additionally, early administration of indomethacin and celecoxib (NSAIDs) inhibited osteoclastogenic signaling. The relevance of the cyclooxygenase pathway in apical periodontitis was shown by a wide modulation in the expression of genes involved in both bone catabolism and anabolism.
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Affiliation(s)
- Fernanda Regina Ribeiro-Santos
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, Ribeirão Preto, São Paulo, Brasil.,Universidade de Pernambuco, Arco Verde, Pernambuco, Brasil
| | - Geyson Galo da Silva
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, Ribeirão Preto, São Paulo, Brasil
| | - Igor Bassi Ferreira Petean
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, Ribeirão Preto, São Paulo, Brasil
| | - Maya Fernanda Manfrin Arnez
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, Ribeirão Preto, São Paulo, Brasil
| | - Léa Assed Bezerra da Silva
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, Ribeirão Preto, São Paulo, Brasil
| | - Lúcia Helena Faccioli
- Universidade de São Paulo, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Laboratório de Inflamação e Imunologia das Parasitoses, Ribeirão Preto, São Paulo, Brasil
| | - Francisco Wanderley Garcia Paula-Silva
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, Ribeirão Preto, São Paulo, Brasil.,Universidade de São Paulo, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Laboratório de Inflamação e Imunologia das Parasitoses, Ribeirão Preto, São Paulo, Brasil
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Arnez MFM, Ribeiro LSN, Barretto GD, Monteiro PM, Ervolino E, Stuani MBS. RANK/RANKL/OPG Expression in Rapid Maxillary Expansion. Braz Dent J 2018; 28:296-300. [PMID: 29297549 DOI: 10.1590/0103-6440201601116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 03/14/2017] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to evaluate osteoclastogenesis signaling in midpalatal suture after rapid maxillary expansion (RME) in rats. Thirty male Wistar rats were randomly assigned to two groups with 15 animals each: control (C) and RME group. RME was performed by inserting a 1.5-mm-thick circular metal ring between the maxillary incisors. The animals were euthanized at 3, 7 and 10 days after RME. qRT-PCR was used to evaluate expression of Tnfsf11 (RANKL), Tnfrsf11a (RANK) and Tnfrsf11b (OPG). Data were submitted to statistical analysis using two-way ANOVA followed by Tukey test (a=0.05). There was an upregulation of RANK and RANKL genes at 7 and 10 days and an upregulation of the OPG gene at 3 and 7 days of healing. Interestingly, an increased in expression of all genes was observed over time in both RME and C groups. The RANKL/OPG ratio showed an increased signaling favoring bone resorption on RME compared to C at 3 and 7 days. Signaling against bone resorption was observed, as well as an upregulation of OPG gene expression in RME group, compared to C group at 10 days. The results of this study concluded that the RANK, RANK-L and OPG system participates in bone remodeling after RME.
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Affiliation(s)
- Maya Fernanda Manfrin Arnez
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto,SP, Brazil
| | - Larissa Soares Nogueira Ribeiro
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto,SP, Brazil
| | - Gabriel Dessotti Barretto
- Department of Histology, School of Pharmacy of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto,SP, Brazil
| | - Patrícia Maria Monteiro
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto,SP, Brazil
| | - Edilson Ervolino
- Department of Histology, UNESP - Universidade Estadual Paulista, Araçatuba, SP, Brazil
| | - Maria Bernadete Sasso Stuani
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto,SP, Brazil
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Trivellato PFB, Arnez MFM, Sverzut CE, Trivellato AE. A retrospective study of zygomatico-orbital complex and/or zygomatic arch fractures over a 71-month period. Dent Traumatol 2011; 27:135-42. [PMID: 21385315 DOI: 10.1111/j.1600-9657.2010.00971.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND/AIM The aim of this retrospective study was to evaluate the epidemiology, treatment, and complications of zygomatico-orbital complex (ZOC) and/or zygomatic arch (ZA) fractures either associated with other facial fractures or not over a 71-month period. MATERIAL AND METHODS This survey was performed in three hospitals of Ribeirao Preto in Sao Paulo, Brazil, from August 2002 to July 2008. The records of 1575 patients with facial trauma were reviewed. There were 140 cases of ZOC and ZA fractures either associated with other facial fractures or not. Data regarding gender, age, race, addictions, day of trauma, etiology, signs and symptoms, oral hygiene condition, day of initial evaluation, hospital admission, day of surgery, surgery approach, pattern of fractures, treatment performed, post-operative antibiotic therapy, day of hospital discharge, and post-operative complications were collected. The data were subjected to descriptive statistical analyses. RESULTS The most frequent fractures affected Caucasian men and occurred during the fourth decade of life. The most frequent etiology was traffic accident, and symptoms and signs included pain and edema. Type I fractures were the main injury observed, and the treatment of choice was always rigid internal fixation. Post-operative antibiotic therapy was solely employed when there was an indication. Complications were observed in 13.1% of the cases. CONCLUSIONS The treatment protocol yielded suitable post-operative results and also showed success rates comparable to published data around the world.
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Affiliation(s)
- Priscila Faleiros Bertelli Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
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Pedrosa WF, Okamoto R, Faria PEP, Arnez MFM, Xavier SP, Salata LA. Immunohistochemical, tomographic and histological study on onlay bone graft remodeling. Part II: calvarial bone. Clin Oral Implants Res 2009; 20:1254-64. [DOI: 10.1111/j.1600-0501.2009.01747.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Manfrin Arnez MF, Xavier SP, Pinto Faria PE, Pedrosa Júnior WF, Cunha TR, de Mendonça RJ, Coutinho-Netto J, Salata LA. Implant Osseointegration in Circumferential Bone Defects Treated with Latex-Derived Proteins or Autogenous Bone in Dog's Mandible. Clin Implant Dent Relat Res 2009; 14:135-43. [DOI: 10.1111/j.1708-8208.2009.00238.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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