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Silva LAB, Azevedo LU, Consolaro A, Barnett F, Xu Y, Battaglino RA, Cañadas PS, de Oliveira KMH, Silva RAB. Novel endodontic sealers induce cell cytotoxicity and apoptosis in a dose-dependent behavior and favorable response in mice subcutaneous tissue. Clin Oral Investig 2017; 21:2851-2861. [PMID: 28281012 DOI: 10.1007/s00784-017-2087-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 02/20/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The objective of the present study is to evaluate the in vitro cytotoxicity and in vivo biocompatibility of two novel endodontic sealers: RealSeal XT1 and Sealapex Xpress on the subcutaneous connective tissue of mice. MATERIALS AND METHODS The cytotoxicity was assessed by cell viability using the MTT assay (one-way ANOVA), trypan blue test (Mann-Whitney) and cell apoptosis by flow cytometer. For the subcutaneous study, polyethylene tubes filled with the sealers were implanted in 70 BALB/c mice: 6 experimental groups (n = 10/group) and 2 control groups with empty tubes (n = 5/group). At the end of experimental periods (7, 21, and 63 days), the tissue was removed and histotechnically processed. Angioblastic proliferation and edema (Fisher's exact test) were evaluated, besides thickness measurement (μm) of the reactionary granulomatous tissue and neutrophil counts (Kruskal-Wallis and Dunn's post test; Mann-Whitney) (α = 0.05). RESULTS MTT assay, trypan blue, and analysis of apoptotic cells showed a dose-dependent direct effect: the more diluted the sealer, the less cytotoxic. Regarding the angioblastic proliferation and edema, difference between the sealers at 7 and 63 days occurred (p < 0.05). Both endodontic sealers initially promoted perimaterial tissue reaction as a foreign body granuloma and thus stimulated favorable tissue responses. CONCLUSIONS Both sealers showed a dose-dependent effect and promoted satisfactory subcutaneous tissue response; the sealer Sealapex Xpress was less cytotoxic and more biocompatible than RealSeal XT. CLINICAL RELEVANCE The step of root canal filling during endodontic treatment is highly important for the preservation of the periapical tissue integrity. Subcutaneous reaction to endodontic sealers enables scientific basis for clinical use.
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Affiliation(s)
- L A B Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café s/n, Monte Alegre, Ribeirão Preto, SP, 14040-904, Brazil
| | - L U Azevedo
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café s/n, Monte Alegre, Ribeirão Preto, SP, 14040-904, Brazil
| | - A Consolaro
- Department of Oral Pathology, Bauru Dental School, University of São Paulo, Bauru, SP, Brazil
| | - F Barnett
- Department of Dental Medicine, Albert Einstein Medical Center, Philadelphia, PA, USA
| | - Y Xu
- Department of Skeletal Biology, The Forsyth Institute, Cambridge, MA, USA
| | - R A Battaglino
- Department of Physical Medicine and Rehabilitation, University of Colorado School of Medicine, Denver, CO, USA
| | - P S Cañadas
- Department of Endodontics, School of Dentistry, University of Barcelona, Barcelona, Spain
| | - Katharina Morant Holanda de Oliveira
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café s/n, Monte Alegre, Ribeirão Preto, SP, 14040-904, Brazil.
| | - R A B Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café s/n, Monte Alegre, Ribeirão Preto, SP, 14040-904, Brazil
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Lima CCB, Conde Júnior AM, Rizzo MS, Moura RD, Moura MS, Lima MDM, Moura LFAD. Biocompatibility of root filling pastes used in primary teeth. Int Endod J 2014; 48:405-16. [DOI: 10.1111/iej.12328] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Accepted: 05/29/2014] [Indexed: 11/28/2022]
Affiliation(s)
- C. C. B. Lima
- Postgraduate Programme in Dentistry; Federal University of Piauí (UFPI); Teresina Brazil
| | - A. M. Conde Júnior
- Department of Morphology; Federal University of Piauí (UFPI); Teresina Brazil
| | - M. S. Rizzo
- Department of Clinic and Veterinary Surgery; Federal University of Piauí (UFPI); Teresina Brazil
| | - R. D. Moura
- Postgraduate Programme in Pathology; University of São Paulo (USP); São Paulo Brazil
| | - M. S. Moura
- Department of Pathology and Dentistry Clinic; Federal University of Piauí (UFPI); Teresina Brazil
| | - M. D. M. Lima
- Department of Pathology and Dentistry Clinic; Federal University of Piauí (UFPI); Teresina Brazil
| | - L. F. A. D. Moura
- Department of Pathology and Dentistry Clinic; Federal University of Piauí (UFPI); Teresina Brazil
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de Oliveira Marreiro R, Bandeira MFCL, de Souza TP, de Almeida MC, Bendaham K, Venâncio GN, Rodrigues IC, Coelho CN, Milério PSLL, de Oliveira GP, de Oliveira Conde NC. Evaluation of the stability and antimicrobial activity of an ethanolic extract of Libidibia ferrea. Clin Cosmet Investig Dent 2014; 6:9-13. [PMID: 24501546 PMCID: PMC3912047 DOI: 10.2147/ccide.s54319] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Biofilm is a dense, whitish, noncalcified aggregate of bacteria, with desquamated epithelial cells and food debris creating conditions for an imbalance of resident oral microflora and favoring the destruction of hard and soft tissues by development of caries and gingivitis. The aim of this study was to obtain and characterize an extract of Libidibia ferrea, ex Caesalpinia ferrea L. and to evaluate its feasibility for formulation as a mouthwash, according to current legislation. For this purpose, pH, sedimentation, density, and stability were evaluated, along with microbiological testing of the extract. The microbiological test was used to verify the presence of Staphylococcus aureus, Pseudomonas aeruginosa, fungi, yeasts, coliforms, and minimum inhibitory concentrations of Streptococcus mutans and Streptococcus oralis strains. Characterization, microbiological evaluation, and minimum inhibitory concentration results were tabulated and described using descriptive statistics. The L. ferrea extract showed stable characteristics, product quality, and antibacterial activity against the microorganisms tested irrespective of experimental time intervals. According to these results, it can be concluded that formulation of a mouthwash containing L. ferrea extract to control biofilm is feasible, but further studies are needed.
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Affiliation(s)
| | | | | | | | - Katiana Bendaham
- School of Dentistry, Federal University of Amazonas, Manaus, Amazonas, Brazil
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