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Elias VV, Lima RB, Lucisano MP, Araujo LDC, Pucinelli CM, Nelson-Filho P, da Silva RAB, da Silva LAB. Inflammatory response to bioceramic and epoxy resin-based endodontic sealers implanted in mice subcutaneous tissue: An in vivo study. Microsc Res Tech 2024. [PMID: 38853352 DOI: 10.1002/jemt.24631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 04/23/2024] [Accepted: 05/30/2024] [Indexed: 06/11/2024]
Abstract
To evaluate the inflammatory tissue response to BioRoot™ RCS (BR) and AH Plus Jet (AHPJ) sealers implanted in mice subcutaneous tissue. It was hypothesized that the inflammatory tissue response to BR would be milder than to AHPJ. An in vivo study was carried out using isogenic mice. The sealers were implanted during standardized surgical procedures. The inflammatory response was evaluated by microscopic analysis and von Kossa reaction in the reactionary tissue around the specimens after 7, 21, and 63 days. For comparisons, a zinc oxide and eugenol sealer (ZOE) was used as a positive control, in addition to a negative control without a sealer (n = 10 per group/period). All statistical analyses considered a significance level of 5%. All endodontic sealers triggered an inflammatory tissue response after 7 days. BR had a higher inflammatory cell count and a thicker fibrous capsule when compared with AHPJ, but both were less inflammatory than ZOE (p < .001). After 21 days, BR continued to trigger an intense inflammatory tissue response, higher in both microscopic parameters compared to AHPJ, and a thicker fibrous capsule than ZOE (p < .001). After 63 days, the inflammatory tissue response decreased in BR, matching the fibrous capsule thickness with AHPJ and ZOE. BR promoted intense calcium precipitation in all study periods. After 63 days, AHPJ and BR sealers were more biocompatible to subcutaneous mice tissue, but AHPJ present better early inflammatory response, as well as BR showed potential bioactivity. RESEARCH HIGHLIGHTS: The inflammatory tissue response triggered by a bioceramic endodontic sealer (BR) was not milder than that triggered by an epoxy-resin based endodontic sealer (AHPJ) during the first 3 weeks, considering the microscopic analysis of the reactionary tissue.
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Affiliation(s)
- Vanessa Valente Elias
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Ricardo Barbosa Lima
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Marília Pacífico Lucisano
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Lisa Danielly Curcino Araujo
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Carolina Maschietto Pucinelli
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Paulo Nelson-Filho
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Raquel Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Léa Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
- Graduate Program in Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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Silva ECA, Pradelli JA, da Silva GF, Cerri PS, Tanomaru-Filho M, Guerreiro-Tanomaru JM. Biocompatibility and bioactive potential of NeoPUTTY calcium silicate-based cement: An in vivo study in rats. Int Endod J 2024; 57:713-726. [PMID: 38467586 DOI: 10.1111/iej.14054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 01/12/2024] [Accepted: 02/19/2024] [Indexed: 03/13/2024]
Abstract
AIM To evaluate the inflammatory reaction and the ability to induce mineralization activity of a new repair material, NeoPUTTY (NPutty; NuSmile, USA), in comparison with Bio-C Repair (BC; Angelus, Brazil) and MTA Repair HP (MTA HP; Angelus, Brazil). METHODOLOGY Polyethylene tubes were filled with materials or kept empty (control group, CG) and implanted in subcutaneous tissue of rats for 7, 15, 30, and 60 days (n = 6/group). Capsule thickness, number of inflammatory cells (ICs), fibroblasts, collagen content, and von Kossa analysis were performed. Unstained sections were evaluated under polarized light and by immunohistochemistry for osteocalcin (OCN). Data were submitted to two-way anova followed by Tukey's test (p ≤ .05), except for OCN. OCN data were submitted to Kruskal-Wallis and Dunn and Friedman post hoc tests followed by the Nemenyi test at a significance level of 5%. RESULTS At 7, 15, and 30 days, thick capsules containing numerous ICs were seen around the materials. At 60 days, a moderate inflammatory reaction was observed for NPutty, BC while MTA HP presented thin capsules with moderate inflammatory cells. In all periods, NPutty specimens contained the highest values of ICs (p < .05). From 7 to 60 days, the number of ICs reduced significantly while an increase in the number of fibroblasts and birefringent collagen content was observed. At 7 and 15 days, no significant difference was observed in the immunoexpression of OCN (p > .05). At 30 and 60 days, NPutty showed the lowest values of OCN (p < .05). At 60 days, a similar immunoexpression was observed for BC and MTA HP (p > .05). In all time intervals, capsules around NPutty, BC, and MTA HP showed von Kossa-positive and birefringent structures. CONCLUSIONS Despite the greater inflammatory reaction promoted by NeoPutty than BC and MTA HP, the reduction in the thickness of capsules, the increase in the number of fibroblasts, and the reduction in the number of ICs indicate that this bioceramic material is biocompatible Furthermore, NeoPutty presents the ability to induce mineralization activity.
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Affiliation(s)
- Evelin Carine Alves Silva
- Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Araraquara, São Paulo, Brazil
| | - Jéssica Arielli Pradelli
- Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Araraquara, São Paulo, Brazil
| | | | - Paulo Sérgio Cerri
- Department of Morphology, School of Dentistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Mario Tanomaru-Filho
- Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Araraquara, São Paulo, Brazil
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Lopes CS, Delfino MM, Tanomaru-Filho M, Sasso-Cerri E, Guerreiro-Tanomaru JM, Cerri PS. Bioactive potential of Bio-C Temp demonstrated by systemic mineralization markers and immunoexpression of bone proteins in the rat connective tissue. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2024; 35:13. [PMID: 38353838 PMCID: PMC10867037 DOI: 10.1007/s10856-024-06781-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 01/15/2024] [Indexed: 02/16/2024]
Abstract
Intracanal medications are used in endodontic treatment due to their antibacterial activity and ability to induce the periapical repair. Among the intracanal medications, the Calen (CAL; SS. White, Brazil) is a calcium hydroxide-based medication that provides an alkaline pH and releases calcium, exerting an antimicrobial activity. Bio-C Temp (BIO; Angelus, Brazil), a ready-to-use bioceramic intracanal medication, was designed to stimulate the mineralized tissues formation. Here, we investigated the bioactive potential of BIO in comparison to the CAL in the rat subcutaneous. Polyethylene tubes filled with medications, and empty tubes (control group, CG) were implanted in the subcutaneous tissue of rats. After 7, 15, 30 and 60 days, the blood was collected for calcium (Ca+2) and alkaline phosphatase (ALP) measurement, and the capsules around the implants were processed for morphological analyses. The data were submitted to two-way ANOVA and Tukey test (p < 0.05). At 7, 15 and 30 days, the ALP level was grater in BIO and CAL than in CG (p < 0.0001). At 7 and 15 days, greater Ca+2 level was seen in the serum of CAL samples. From 7 to 60 days, an increase in the number of fibroblasts, osteocalcin- and osteopontin-immunolabelled cells was observed in BIO and CAL groups (p < 0.0001). In all periods, BIO and CAL specimens showed von Kossa-positive structures. Moreover, ultrastructural analysis revealed globules of mineralization in the capsules around the BIO and CAL specimens. Thus Bio-C Temp caused an increase in the ALP, osteocalcin and osteopontin, which may have allowed the formation of calcite, suggesting bioactive potential.
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Affiliation(s)
- Camila Soares Lopes
- Department of Restorative Dentistry, Dental School, São Paulo State University (Unesp), Araraquara, SP, Brazil
| | - Mateus Machado Delfino
- Department of Restorative Dentistry, Dental School, São Paulo State University (Unesp), Araraquara, SP, Brazil
| | - Mário Tanomaru-Filho
- Department of Restorative Dentistry, Dental School, São Paulo State University (Unesp), Araraquara, SP, Brazil
| | - Estela Sasso-Cerri
- Laboratory of Histology and Embryology, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Dental School, São Paulo State University (Unesp), Araraquara, SP, Brazil
| | | | - Paulo Sérgio Cerri
- Laboratory of Histology and Embryology, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Dental School, São Paulo State University (Unesp), Araraquara, SP, Brazil.
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Coaguila-Llerena H, Ochoa-Rodríguez VM, Passos Barbieri I, Ramos SG, Faria G. Calcium hypochlorite cytotoxicity mechanism in fibroblasts and effect on osteoblast mineralization. Int Endod J 2024; 57:64-77. [PMID: 37814380 DOI: 10.1111/iej.13983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 05/25/2023] [Accepted: 09/25/2023] [Indexed: 10/11/2023]
Abstract
AIM To determine the cytotoxicity mechanism of 2.5% calcium hypochlorite [Ca(OCl)2 ] in L929 fibroblasts and the effect of this solution on human osteoblast-like cells (Saos-2) mineralization, compared to that of 2.5% sodium hypochlorite (NaOCl). METHODOLOGY L929 fibroblasts were exposed to Ca(OCl)2 and NaOCl at different dilutions for 10 min. Cell metabolism was assessed by methyl-thiazole-tetrazolium (MTT); lysosome integrity, by neutral red (NR) assay; type of cell death, by flow cytometry (apoptosis/necrosis); cytoskeleton, by actin and α-tubulin fluorescence and cell ultrastructure, by transmission electron microscopy (TEM). The alkaline phosphatase (ALP) activity and mineralized nodule formation were determined in Saos-2 by thymolphthalein release and alizarin red staining (ARS), respectively. The data were analysed by two-way anova and Bonferroni's post-test (α = .05). RESULTS Ca(OCl)2 promoted higher cell viability and a lower percentage of apoptosis and necrosis than NaOCl (p < .05). Ca(OCl)2 and NaOCl decreased cell metabolism and lysosome integrity, induced the breakdown of microtubules and actin filaments, promoted alterations of rough endoplasmic reticulum and disruption of mitochondrial cristae. Additionally, Ca(OCl)2 did not induce ALP activity and had no effect on mineralized nodules formation. CONCLUSIONS Although Ca(OCl)2 and NaOCl promoted the same cytotoxicity mechanism, Ca(OCl)2 was less cytotoxic than NaOCl. As for ALP activity, no differences were observed between NaOCl and Ca(OCl)2 . The production of mineralized nodules induced by Ca(OCl)2 was lower than those induced by NaOCl, but was not different from those induced by the control group.
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Affiliation(s)
- Hernán Coaguila-Llerena
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University - UNESP, Araraquara, Brazil
| | - Victor Manuel Ochoa-Rodríguez
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University - UNESP, Araraquara, Brazil
| | - Isadora Passos Barbieri
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University - UNESP, Araraquara, Brazil
| | - Simone Gusmão Ramos
- Department of Pathology, Ribeirão Preto Medical School, University of São Paulo - USP, Ribeirão Preto, Brazil
| | - Gisele Faria
- Department of Restorative Dentistry, Araraquara School of Dentistry, São Paulo State University - UNESP, Araraquara, Brazil
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Tzanetakis G, Jakovljevic A, Koletsi D, Jacimovic J, Nagendrababu V, Duncan HF, Dummer PMH. Critical analysis of the reporting quality of animal studies within Endodontics using the Preferred Reporting Items for Animal Studies in Endodontics (PRIASE) 2021 quality standard checklist. Int Endod J 2023; 56:1042-1062. [PMID: 37300853 DOI: 10.1111/iej.13944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 05/07/2023] [Accepted: 06/07/2023] [Indexed: 06/12/2023]
Abstract
AIM To critically evaluate the reporting quality of a random sample of animal studies within the field of endodontics against the Preferred Reporting Items for Animal Studies in Endodontics (PRIASE) 2021 checklist and to investigate the association between the quality of reporting and several characteristics of the selected studies. METHODOLOGY Fifty animal studies related to endodontics were randomly selected from the PubMed database with publication dates from January 2017 to December 2021. For each study, a score of '1' was given when the item of the PRIASE 2021 checklist was fully reported, whereas a score of '0' was given when an item was not reported; when the item was inadequately or partially reported, a score of '0.5' was given. Based on the overall scores allocated to each manuscript, they were allocated into three categories of reporting quality: low, moderate and high. Associations between study characteristics and reporting quality scores were also analysed. Descriptive statistics and Fisher's exact tests were used to describe the data and determine associations. The probability value of .05 was selected as the level of statistical significance. RESULTS Based on the overall scores, four (8%) and 46 (92%) of the animal studies evaluated were categorized as 'High' and 'Moderate' reporting quality, respectively. A number of items were adequately reported in all studies related to background (Item 4a), relevance of methods/results (7a) and interpretation of images (11e), whereas only one item related to changes in protocol (6d) was not reported in any. No associations were confirmed between reporting quality scores and number of authors, origin of the corresponding author, journal of publication (endodontic specialty vs. non- specialty), impact factor or year of publication. CONCLUSIONS Animal studies published in the specialty of endodontics were mostly of 'moderate' quality in terms of the quality of reporting. Adherence to the PRIASE 2021 guidelines will enhance the reporting of animal studies in the expectation that all future publications will be high quality.
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Affiliation(s)
- Giorgos Tzanetakis
- Department of Endodontics, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Aleksandar Jakovljevic
- Department of Pathophysiology, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Despina Koletsi
- Clinic of Orthodontics and Pediatric Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
- Meta- Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, California, USA
| | - Jelena Jacimovic
- Central Library, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Venkateshbabu Nagendrababu
- University of Sharjah, College of Dental Medicine, Department of Preventive and Restorative Dentistry, Sharjah, UAE
| | - Henry Fergus Duncan
- Division of Restorative Dentistry & Periodontology, Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland
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Yang X, Zheng T, Yang N, Yin Z, Wang W, Bai Y. A Review of the research methods and progress of biocompatibility evaluation of root canal sealers. AUST ENDOD J 2023; 49 Suppl 1:508-514. [PMID: 36480411 DOI: 10.1111/aej.12725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 09/22/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022]
Abstract
The function of root canal sealer was to achieve an appropriate three-dimensional filling effect by filling the root canal and some irregular lumen, thereby inhibiting the residual bacteria. There were many types of sealers, but research to find the most suitable ones was still ongoing. In recent years, researchers had continuously improved the performance of sealers by developing new sealers or adding active ingredients to the sealers. However, most sealers exhibit varying degrees of cytotoxicity and tissue responses, which affect clinical therapy efficacy. This review describes different technical approaches, and recent research progress in the biocompatibility evaluation of root canal sealers and provides brief insights into this field by summarising the performance studies of different root canal sealers.
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Affiliation(s)
- Xiliang Yang
- Department of Oral, College of stomatology, North China University of Science and Technology, Tangshan City, China
| | - Tianxia Zheng
- Department of Oral, College of stomatology, North China University of Science and Technology, Tangshan City, China
| | - Nuoya Yang
- Department of Oral, College of stomatology, North China University of Science and Technology, Tangshan City, China
| | - Zihan Yin
- Department of Oral, College of stomatology, North China University of Science and Technology, Tangshan City, China
| | - Wuliang Wang
- Department of Oral, College of stomatology, North China University of Science and Technology, Tangshan City, China
| | - Yuhong Bai
- Department of Oral, College of stomatology, North China University of Science and Technology, Tangshan City, China
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Inada RNH, Queiroz MB, Lopes CS, Silva ECA, Torres FFE, da Silva GF, Guerreiro-Tanomaru JM, Cerri PS, Tanomaru-Filho M. Biocompatibility, bioactive potential, porosity, and interface analysis calcium silicate repair cements in a dentin tube model. Clin Oral Investig 2023:10.1007/s00784-023-05002-5. [PMID: 37014506 DOI: 10.1007/s00784-023-05002-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023]
Abstract
OBJECTIVES This study is to evaluate biocompatibility, bioactive potential, porosity, and dentin/material interface of Bio-C Repair (BIOC-R), MTA Repair HP (MTAHP), and Intermediate Restorative Material (IRM). MATERIALS AND METHODS Dentin tubes were implanted into subcutaneous of rats for 7, 15, 30, and 60 days. Thickness of capsules, number of inflammatory cells (ICs), interleukin-6 (IL-6), osteocalcin (OCN), and von Kossa were evaluated. Porosity and material/dentin interface voids were also analyzed. Data were submitted to ANOVA and Tukey's tests (p < 0.05). RESULTS IRM capsules were thicker and contained greater ICs and IL-6-immunopositive cells at 7 and 15 days. BIOC-R capsules exhibited higher thickness and ICs at 7 days and greater IL-6 at 7 and 15 days than MTAHP (p < 0.05). At 30 and 60 days, no significant difference was observed among the groups. OCN-immunopositive cells, von Kossa-positive, and birefringent structures were observed in BIOC-R and MTAHP. MTAHP exhibited higher porosity and interface voids (p < 0.05). CONCLUSIONS BIOC-R, MTAHP, and IRM are biocompatible. Bioceramics materials demonstrate bioactive potential. MTAHP presented the highest porosity and presence of voids. CLINICAL RELEVANCE BIOC-R and MTAHP have adequate biological properties. BIOC-R demonstrated lower porosity and presence of voids, which may represent better sealing for its clinical applications.
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Affiliation(s)
- Rafaela Nanami Handa Inada
- Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Rua Humaitá, 1680, Araraquara, SP, CEP 14801-903, Brazil
| | - Marcela Borsatto Queiroz
- Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Rua Humaitá, 1680, Araraquara, SP, CEP 14801-903, Brazil
| | - Camila Soares Lopes
- Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Rua Humaitá, 1680, Araraquara, SP, CEP 14801-903, Brazil
| | - Evelin Carine Alves Silva
- Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Rua Humaitá, 1680, Araraquara, SP, CEP 14801-903, Brazil
| | - Fernanda Ferrari Esteves Torres
- Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Rua Humaitá, 1680, Araraquara, SP, CEP 14801-903, Brazil
| | - Guilherme Ferreira da Silva
- Department of Dentistry, Centro Universitário Sagrado Coração (UNISAGRADO), Rua Irmã Armida, 10-50, Bauru, SP, CEP 17011-160, Brazil
| | - Juliane Maria Guerreiro-Tanomaru
- Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Rua Humaitá, 1680, Araraquara, SP, CEP 14801-903, Brazil
| | - Paulo Sérgio Cerri
- Department of Morphology and Children Clinic, São Paulo State University (UNESP), School of Dentistry, Rua Humaitá, 1680, Araraquara, SP, CEP 14801-903, Brazil
| | - Mário Tanomaru-Filho
- Department of Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Rua Humaitá, 1680, Araraquara, SP, CEP 14801-903, Brazil.
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Edanami N, Belal RSI, Takenaka S, Yoshiba K, Gutierrez REB, Takahara S, Yoshiba N, Ohkura N, Noiri Y. In Vivo Assessment of the Calcium Salt-Forming Ability of a New Calcium Silicate-Based Intracanal Medicament: Bio-C Temp. Dent J (Basel) 2023; 11:dj11040091. [PMID: 37185469 PMCID: PMC10137445 DOI: 10.3390/dj11040091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/17/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
Calcium salt precipitation induced by intracanal medicaments contributes to the formation of apical hard tissue during apexification. This study compared the calcium salt-forming ability of a new calcium silicate-based intracanal medicament (Bio-C Temp) with that of two commercial calcium hydroxide pastes (Calcipex Plane II and Vitapex) in a rat subcutaneous implantation model. Polytetrafluoroethylene tubes containing each of the three materials were subcutaneously implanted in 4-week-old male Wistar rats. After 28 days, the composition and amount of calcium salts formed at the material–tissue interface were assessed using micro-Raman spectroscopy, X-ray diffraction, and elemental mapping. The tested materials produced white precipitates that had Raman spectra with peaks corresponding to hydroxyapatite and calcite. X-ray diffraction detected hydroxyapatite formation on Calcipex Plane II and Vitapex implants, as well as calcite formation on all three materials. Elemental mapping revealed that Bio-C Temp generated significantly smaller calcium- and phosphorus-rich calcified regions within the subcutaneous connective tissue than Vitapex. These results indicate that Bio-C Temp produced less calcium salt in rat subcutaneous tissue than Vitapex, although all materials formed hydroxyapatite and calcite in rat subcutaneous tissue. Bio-C Temp could be less effective than Vitapex in promoting apical hard tissue formation during apexification.
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Affiliation(s)
- Naoki Edanami
- Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Razi Saifullah Ibn Belal
- Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Shoji Takenaka
- Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Kunihiko Yoshiba
- Division of Oral Science for Health Promotion, Department of Oral Health and Welfare, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Rosa Edith Baldeon Gutierrez
- Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Shintaro Takahara
- Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Nagako Yoshiba
- Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Naoto Ohkura
- Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Yuichiro Noiri
- Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
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Alhindi OH, Atmeh AR, Alhawaj H, Omar O. Inflammatory response to epoxy resin and calcium silicate sealers preheated with different temperatures: an in vivo study. Clin Oral Investig 2023; 27:2235-2243. [PMID: 36977762 DOI: 10.1007/s00784-023-04960-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 03/17/2023] [Indexed: 03/29/2023]
Abstract
OBJECTIVE To determine the impact of heat exposure of different sealers on inflammatory cytokine secretions and tissue response in vivo. MATERIALS AND METHODS Silicone tubes were prefilled with epoxy resin (ER) or calcium silicate (CS) sealers, preheated at 37, 60, or 120 °C, and implanted in rat subcutaneous site. Peri-implant exudate and tissue were analyzed after 1 and 4 weeks for cytokine secretions and tissue organization. RESULTS At 1 week, 120 °C-preheated CS and ER induced higher secretions of tumor necrosis factor alpha (TNF-α) and interleukin 6 (IL-6), respectively, as compared to sham/empty tube groups. At 4 weeks, whereas TNF-α secretion was reduced in CS, it increased in ER group, particularly for 120 °C. Both sealers revealed high IL-6 after 4 weeks as compared to sham/empty tube, and generally, higher IL-6 secretions were associated with ER. Histology at 1 week revealed lower degree of inflammatory infiltrate in the groups of the highest preheating temperature (120 °C). Nonetheless, at 4 weeks, whereas fibrous capsule area and inflammatory infiltrate remained low in the CS120 group, they were high in ER120. CONCLUSION Preheating ER sealer to 120 °C induced high and prolonged secretion of proinflammatory cytokines (TNF-α and IL-6), whereas this effect was transient for the CS sealer. This was associated with increased fibrous capsule and inflammatory infiltrate in response to 120 °C-preheated ER. CLINICAL RELEVANCE Heat-induced changes in sealer properties alter the inflammatory response in vivo, which may affect the clinical outcome. This will not only help appropriate selection of obturation technique for different sealers, but also for optimizing the properties of new generation of sealers.
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Queiroz MB, Inada RNH, Jampani JLDA, Guerreiro-Tanomaru JM, Sasso-Cerri E, Tanomaru-Filho M, Cerri PS. Biocompatibility and bioactive potential of an experimental tricalcium silicate-based cement in comparison with Bio-C repair and MTA Repair HP materials. Int Endod J 2023; 56:259-277. [PMID: 36314136 DOI: 10.1111/iej.13863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 10/17/2022] [Accepted: 10/18/2022] [Indexed: 11/05/2022]
Abstract
AIM To evaluate the tissue reaction of a tricalcium silicate-based repair material associated with 30% calcium tungstate (TCS + CaWO4 ) in comparison to Bio-C Repair (Bio-C; Angelus) and to MTA Repair HP (MTA HP; Angelus). METHODOLOGY Polyethylene tubes filled with one of the materials or left empty (control group, CG) were implanted into the subcutaneous tissues of rats for 7, 15, 30 and 60 days (n = 32/group). The capsule thickness, number of inflammatory cells, collagen content, interleukin-6 (IL-6), osteocalcin (OCN), von Kossa reaction and analysis under polarized light were evaluated. The data were subjected to generalized linear models for repeated measures, except the OCN. OCN data were submitted to Kruskal-Wallis and Dunn's post hoc test and Friedman followed by Nemenyi's test at significance level of 5%. RESULTS At all time points, significant differences in the number of inflammatory cells were not observed between TCS + CaWO4 and Bio-C, whereas, at 15, 30 and 60 days, no significant difference was detected between TCS + CaWO4 and MTA HP. At all periods, significant differences were not detected in the number of fibroblasts in TCS + CaWO4 versus MTA HP, and, at 60 days, no significant difference was demonstrated between these groups and CG. Significant differences in the immunoexpression of IL-6 were not detected amongst bioceramic materials at all periods. From 7 to 60 days, significant reduction in the number of inflammatory cells, number of IL-6-immunopositive cells and in the capsule thickness was accompanied by significant increase in the collagen in all groups. OCN-immunolabelled cells, von Kossa-positive structures and amorphous calcite deposits were observed around all materials, whereas, in the CG, these structures were not seen. CONCLUSIONS These findings indicate that the experimental material (TCS + CaWO4 ) is biocompatible and has a bioactive potential, similar to the MTA HP and Bio-C Repair, and suggest its use as a root repair material.
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Affiliation(s)
| | - Rafaela N H Inada
- Department of Restorative Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - José Leandro de Abreu Jampani
- Laboratory of Histology and Embryology, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Dental School, São Paulo State University (UNESP), Araraquara, Brazil
| | | | - Estela Sasso-Cerri
- Laboratory of Histology and Embryology, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Dental School, São Paulo State University (UNESP), Araraquara, Brazil
| | - Mário Tanomaru-Filho
- Department of Restorative Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - Paulo Sérgio Cerri
- Laboratory of Histology and Embryology, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Dental School, São Paulo State University (UNESP), Araraquara, Brazil
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Benetti F, Ferreira LL, Dos Reis-Prado AH, Faria FD, Ervolino E, Berbert FLCV, Leonardo RDT, Dias J, Gomes-Filho JE, Cintra LTA. Interleukin-6, tumor necrosis factor-α, and CD5 immunolabeling of new experimental endodontic sealer and repair material. Odontology 2023; 111:93-104. [PMID: 35751826 DOI: 10.1007/s10266-022-00723-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 06/07/2022] [Indexed: 01/06/2023]
Abstract
The aim of this study was to evaluate the biocompatibility and immunoinflammatory response of the Sealepox and Sealepox-RP, based on interleukin (IL)-6, tumor necrosis factor (TNF)-α, and CD5 immunolabelling. The ProRoot MTA (PRMTA) was used for comparison. Polyethylene tubes (1.0-mm internal, 1.6-mm external diameter, and 10.0-mm length; ISO 10993) with or without (control) materials were randomly implanted in the dorsum of 35 rats (4 per rat). After 7, 15, 30, 60, and 90 days (n = 7), the tubes were removed for histological and immunohistochemical analysis. The Kruskal-Wallis and Dunn's test for non-parametric data and, ANOVA and Tukey test for parametric data were used (P < 0.05). Hematoxylin and eosin staining revealed that the concentration of inflammatory cells decreased over time with no differences between groups in all periods (P > 0.05). Regarding IL-6 immunostaining, there was no difference at 7 days (P > 0.05); all groups decreased over time, being faster for the PRMTA group and also, with no differences between groups in the last period (P > 0.05). For TNF-α, at 7 days there was no difference between groups (P > 0.05); there was an increase at 15 days for PRMTA and, at 30 and 60 days, for PRMTA and Sealepox compared to the control (P < 0.05). At 90 days, Sealepox RP showed the lowest immunostaining being similar to the control (P > 0.05). Regarding CD5 cells, at 7 days, there was high immunostaining for PRMTA compared to the control (P < 0.05); and significant reduction over time with difference for all groups at 30 and 60 days. (P < 0.05); Sealepox was similar to the control in all periods (P > 0.05). Sealepox RP showed the highest immunostaining at 15 days, being different from the control and PRMTA (P < 0.05); in the other periods it was similar to the control (P > 0.05). It can be concluded that Sealepox and Sealepox-RP were biocompatible and demonstrated similar immunoinflammatory response regarding IL-6, TNF-α, and CD5 compared to PRMTA.
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Affiliation(s)
- Francine Benetti
- Department of Restorative Dentistry, Faculdade de Odontologia, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), R: José Bonifácio, 1193. Vila Mendonça, Araçatuba, São Paulo, Brazil
| | - Luciana Louzada Ferreira
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), R: José Bonifácio, 1193. Vila Mendonça, Araçatuba, São Paulo, Brazil
| | - Alexandre Henrique Dos Reis-Prado
- Department of Restorative Dentistry, Faculdade de Odontologia, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Flávio Duarte Faria
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), R: José Bonifácio, 1193. Vila Mendonça, Araçatuba, São Paulo, Brazil
| | - Edilson Ervolino
- Department of Basic Science, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | | | - Renato de Toledo Leonardo
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araraquara, SP, Brazil
| | - João Dias
- University Institute Egas Moniz (IUEM), Monte de Caparica, Almada, Portugal
| | - João Eduardo Gomes-Filho
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), R: José Bonifácio, 1193. Vila Mendonça, Araçatuba, São Paulo, Brazil
| | - Luciano Tavares Angelo Cintra
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), R: José Bonifácio, 1193. Vila Mendonça, Araçatuba, São Paulo, Brazil. .,School of Dentistry, Dental Assistance Center for Disabled Persons (CAOE) of the São Paulo State University (UNESP), Araçatuba, SP, Brazil.
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Bioactivity Potential of Bioceramic-Based Root Canal Sealers: A Scoping Review. LIFE (BASEL, SWITZERLAND) 2022; 12:life12111853. [PMID: 36430988 PMCID: PMC9697500 DOI: 10.3390/life12111853] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/19/2022] [Accepted: 10/31/2022] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Bioceramic-based root canal sealers are novel materials with a bioactivity potential that stands out compared with conventional root canal sealers. However, the term bioactivity may be overused and is often misunderstood. Hence, the objective of this study was to synthesize and map key concepts related to the bioactivity analysis of bioceramic-based root canal sealers. METHODS The present scoping review is reported in accordance with the PRISMA-ScR Statement and is registered in the Open Science Framework. Two blinded reviewers carried out a comprehensive search in six databases up to January 10th, 2022: MEDLINE, Scopus, Embase, Web of Science, Cochrane Library, and Lilacs/BBO. Eligibility was considered for in vitro and in vivo studies that evaluated the bioactivity potential of bioceramic-based root canal sealers. RESULTS A total of 53 studies were included in the qualitative synthesis. In vitro bioactivity was evaluated through the mineralization potential, formation of carbonated apatite on the surface, and the gene expression related to proteins involved in the mineralization process. Meanwhile, for in vivo studies, staining techniques associated with immunohistochemical tests were mainly used to detect mineralization on the material-host tissue interface. CONCLUSIONS According to the methodology used, the most prevalent methods to assess bioactivity in acellular form were the immersion of the material in Hank's balanced salt solution, followed by surface observation with scanning electron microscopy and energy dispersive X-ray. In cell cultures, the chosen method was usually Alizarin Red staining, followed by the evaluation of alkaline phosphatase enzymatic activity and the use of molecular biology tests.
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Biocompatibility of a New Calcium Silicate-Based Root Canal Sealer Mediated via the Modulation of Macrophage Polarization in a Rat Model. MATERIALS 2022; 15:ma15051962. [PMID: 35269193 PMCID: PMC8911908 DOI: 10.3390/ma15051962] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/18/2022] [Accepted: 02/28/2022] [Indexed: 12/16/2022]
Abstract
(1) Background: The EndoSequence BC Sealer HiFlow (Brasseler, Savannah, GA, USA) has recently been introduced in clinical applications. Thus, the aims of the present study are to determine its biocompatibility in vivo and to examine its ability to drive macrophage polarization in vitro and in vivo. (2) Methods: HiFlow was implanted into rat connective tissue for 7, 30 and 150 days. The microstructures and elemental compositions were determined by scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDX). Hematoxylin–eosin, immunofluorescence, RT–qPCR and flow cytometry were used to elucidate the effects on inflammatory responses and macrophage polarization. (3) Results: SEM-EDX revealed the formation of surface hydroxyapatite crystal layers. Histological evaluation showed that HiFlow exhibited long-term biocompatibility because it decreased inflammatory responses and reduced the number of macrophages over time; however, tissue necrosis was observed in all the groups. RT–qPCR verified that HiFlow regulated the expression of inflammatory factors to inhibit the inflammatory response. Immunofluorescence analysis performed on in vivo samples revealed that HiFlow promoted M2-like macrophage polarization, and these results were confirmed by flow cytometry in vitro. (4) Conclusion: After 150 days of investigation, HiFlow was considered biologically acceptable, and the formation of apatite crystal layers and the promotion of M2-like macrophage polarization may contribute to its favorable biocompatibility.
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Hepatic enzymes and immunoinflammatory response to Bio-C Temp bioceramic intracanal medication implanted into the subcutaneous tissue of rats. Sci Rep 2022; 12:2788. [PMID: 35181684 PMCID: PMC8857247 DOI: 10.1038/s41598-022-06545-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 01/05/2022] [Indexed: 11/08/2022] Open
Abstract
Our purpose was to evaluate the biocompatibility and hepatotoxicity of a new bioceramic intracanal medicament, Bio-C Temp (BIO). The biological properties of BIO were compared with calcium hydroxide-based intracanal medicament (Calen; CAL), used as gold pattern. Polyethylene tubes filled with BIO or CAL, and empty tubes (control group, CG) were implanted into subcutaneous tissue of rats. After 7, 15, 30 and 60 days, the samples were embedded in paraffin for morphological, quantitative and immunohistochemistry analyses. At 7 and 60 days, blood samples were collected for analysis of serum glutamic-oxaloacetic transaminase (GOT) and glutamic-pyruvic transaminase (GPT) levels. The data were submitted to two-way ANOVA and Tukey’s test (p ≤ 0.05). No significant difference was detected in serum GOT and GPT levels among BIO, CAL and CG specimens. In all periods, BIO specimens exhibited lower number of inflammatory cells and immunoexpression of IL-6, a pro-inflammatory cytokine, than CAL specimens. The reduction of these parameters was accompanied by significant increase in the collagen content and in the immunoexpression of IL-10, a cytokine involved in the tissue repair, over time. Our findings indicate that Bio-C Temp is biocompatible and had no hepatotoxicity effect.
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