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Calazans Neto JV, Ferreira I, Ramos AP, Bolfarini C, Batalha RL, Dos Reis AC, Valente MLDC. Comparative analysis of the physical, chemical, and microbiological properties of Ti-6Al-4V disks produced by different methods and subjected to surface treatments. J Prosthet Dent 2024; 131:742.e1-742.e8. [PMID: 38383281 DOI: 10.1016/j.prosdent.2024.01.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 02/23/2024]
Abstract
STATEMENT OF PROBLEM To improve the osseointegration of dental implants and reduce microbiological growth, different micro- and nanoscale surface topographies can be used. PURPOSE The purpose of this in vitro study was to evaluate the influence of Ti-6Al-4V with 4 surfaces, machined (DU), machined+hydroxyapatite (DUHAp), machined+acid-alkali treatment (DUAA), and additive manufacturing (DMA), on the physical, chemical, and microbiological properties. MATERIAL AND METHODS The topography of Ti-6Al-4V disks with the 4 surfaces was evaluated by scanning electron microscopy (SEM), the chemical composition by energy dispersive X-ray spectroscopy (EDS), and the crystalline structure by X-ray diffraction (XRD). Physical and chemical properties were analyzed by using wettability and surface free energy, roughness, and microbial adhesion against Staphylococcus aureus by colony forming units (CFU). One-way ANOVA analysis of variance and the Tukey multiple comparisons test were applied to evaluate the data, except CFU, which was submitted to the Kruskal-Wallis nonparametric test (α=.05). RESULTS DU photomicrographs showed a topography characteristic of a polished machined surface, DUHAp and DUAA exhibited patterns corresponding to the surface modifications performed, and in DMA the presence of partially fused spherical particles was observed. The EDS identified chemical elements inherent in the Ti-6Al-4V, and the DUHAp and DUAA disks also had the ions from the treatments applied. XRD patterns revealed similarities between DU and DMA, as well as characteristic peaks of hydroxyapatite (HA) in the DUHAp disk and the DUAA. Compared with DU and DMA the DUHAp and DUAA groups showed hydrophilic behavior with smaller contact angles and higher surface free energy (P<.05). DMA showed a higher mean value of roughness, different from the others (P<.05), and a higher CFU for S. aureus (P=.006). CONCLUSIONS DUHAp and DUAA showed similar behaviors regarding wettability, surface free energy, and bacterial adhesion. Among the untreated groups, DMA exhibited higher roughness, bacterial adhesion, and lower wettability and surface free energy.
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Affiliation(s)
- João Vicente Calazans Neto
- Master's student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Izabela Ferreira
- Master's student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Ana Paula Ramos
- Professor, Department of Chemistry, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, (USP), Ribeirão Preto, Brazil
| | - Claudemiro Bolfarini
- Professor, Professor, Federal University of São Carlos (UFSCar), São Carlos, Brazil
| | - Rodolfo Lisboa Batalha
- Researcher, Materials and Technologies, Department of Research, Development and Innovation, Institute of Welding and Quality (ISQ), Porto Salvo, Oeiras, Portugal
| | - Andréa Cândido Dos Reis
- Professor, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Mariana Lima da Costa Valente
- Professor, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil.
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Geng H, Sun X, Zhang X, Yuan Y. Efficient titanium surface modified using bifunctional chimeric peptides to prevent biofilm formation by multiple microorganisms. Colloids Surf B Biointerfaces 2023; 230:113534. [PMID: 37690227 DOI: 10.1016/j.colsurfb.2023.113534] [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: 06/14/2023] [Revised: 08/18/2023] [Accepted: 09/04/2023] [Indexed: 09/12/2023]
Abstract
It is still a challenge to prevent the formation of bacterial biofilms on the surfaces of oral implants. A chemical peptide with binding and antibacterial properties may be a promising agent if used to modify titanium (Ti) surfaces to inhibit biofilm formation. In this study, peptides were designed by linking the antimicrobial sequence derived from human β-defensin-3 (hBD-3) to the Ti-binding peptide-1 (TBP-1) sequence by using a triple glycine (G) linker. The antimicrobial activity and biocompatibility characteristics of the chemical-peptide-modified Ti surface were then evaluated and the potential antibacterial mechanism was investigated. This study demonstrated that the chemical-peptide-modified surface exhibited satisfactory bactericidal activities against Streptococcus gordonii, Fusobacterium nucleatum, and Porphyromonas gingivalis. In addition to its potent bacteria-killing efficacy, the surface-immobilised chemical peptide also demonstrated excellent biocompatibility to L929 cells. Moreover, the disruption of the integrity of the bacterial membrane partially revealed the antibacterial mechanism of the peptide. This study demonstrated the potential of chemical-peptide-modified Ti surfaces for preventing the occurrence of peri-implant diseases, thereby providing a promising approach to improving the survival rate of oral implants.
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Affiliation(s)
- Hongjuan Geng
- Department of Stomatology, Tianjin Hospital, 406 Jiefang South Road, Hexi District, Tianjin 300211, PR China
| | - Xun Sun
- Department of Stomatology, Tianjin Hospital, 406 Jiefang South Road, Hexi District, Tianjin 300211, PR China
| | - Xi Zhang
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, PR China.
| | - Yang Yuan
- General Hospital, Tianjin Medical University, 154 An Shan Road, Tianjin 300052, PR China.
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Kreve S, Oliveira VC, Santos ES, Oliveira TT, Valente MLC, Batalha RL, Nascimento CD, Reis AC. In situ evaluation of microbial profile formed on Ti-6Al-4V additive manufacturing disks: 16S rRNA sequencing. J Prosthet Dent 2023:S0022-3913(23)00192-0. [PMID: 37120373 DOI: 10.1016/j.prosdent.2023.03.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 05/01/2023]
Abstract
STATEMENT OF PROBLEM Dental implants obtained by additive manufacturing may present changes in the microbiome formed. However, studies profiling the microbial communities formed on Ti-6Al-4V are lacking. PURPOSE The purpose of this in situ study was to characterize the profile of the microbial communities formed on Ti-6Al-4V disks produced by additive manufacturing and machining. MATERIAL AND METHODS Titanium disks produced by additive manufacturing (AMD) and machining (UD) were housed in the buccal region of removable intraoral devices. These devices containing both disks were used by eight participants for 96 hours. After every 24 hours of intraoral exposure, the biofilm that had formed on the disks was collected. The 16S rRNA genes from each specimen were amplified and sequenced with the Miseq Illumina instrument and analyzed. Total microbial quantification was evaluated by analysis of variance-type statistics using the nparLD package. The Wilcoxon test was used to evaluate alpha diversity (α=.05). RESULTS A difference was found in the microbial communities formed on additively manufactured and machined disks, with a reduction in operational taxonomic units (OTUs) for the AMD group compared with the UD group. Firmicutes and Proteobacteria were the most abundant phyla. Of the 1256 genera sequenced, Streptococcus predominated on both disks. CONCLUSIONS The microbiome of the biofilm formed on the Ti-6Al-4V disks was significantly influenced by the fabrication method. The AMD disks showed lower total microbial counts than the UD disks.
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Affiliation(s)
- Simone Kreve
- Doctoral student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, USP, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Viviane C Oliveira
- Specialized Laboratory Technician, Department of Dental Materials and Prosthodontics, School of Dentistry of Ribeirao Preto, University of Sao Paulo (USP), Ribeirao Preto, Brazil
| | - Emerson S Santos
- Specialized Laboratory Technician, Faculty of Pharmaceutical Sciences of Ribeirão Preto, Department of Clinical Toxicological and Bromatologic Analysis, USP, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Thaisa T Oliveira
- Master student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, USP, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Mariana L C Valente
- Post-doctoral student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, USP, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Rodolfo L Batalha
- Researcher, Materials and Technologies, Department of Research, Development and Innovation, Instituto de Soldadura e Qualidade, Porto Salvo, Oeiras, Portugal
| | - Cássio do Nascimento
- Associate Professor, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, USP, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Andréa C Reis
- Associate Professor, Departament of Dental Materials and Prosthesis, Ribeirão Preto Dental School, USP, University of São Paulo, Ribeirão Preto, SP, Brazil.
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Zhang X, Zhang J, Wen Y. An efficient DNAzyme-based DNA scaffold for label-free and sensitive bacterial pathogen detection. Anal Biochem 2023; 666:115076. [PMID: 36764566 DOI: 10.1016/j.ab.2023.115076] [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: 10/28/2022] [Revised: 01/24/2023] [Accepted: 02/04/2023] [Indexed: 02/11/2023]
Abstract
Even though it is very important, it is still rather difficult to detect minuscule levels of the bacterial pathogen in clinical practice, such as samples from dental implants. We construct here an efficient scaffold for label-free and sensitive Staphylococcus aureus (S. aureus) detection. The precise recognition of target bacteria by the detection scaffold leads to the self-assembly of Chain i and DNAzyme based cleavage of Chain iii. In detail, active DNAzyme conformation is formed based on the hybridization of Chain iii and Chain ii, and a nicking site is generated in Chain iii, making it possible to form a self-primer in Chain i. With the assistance of DNA polymerase, a single-strand DNA chain is added to the 3' terminal of Chain i, in which process the bacteria is released for the complex to bind with a next detection scaffold, forming a signal recycle. Following DNAzyme-based cleavage, the liberated sequences unroll MB and release G-rich sequences that can specifically bind with the fluorescent dye Thioflavin T (ThT), initiating ThT's fluorescence signal production. The approach demonstrates a wide detection range of 102 CFU/mL and 106 CFU/mL with a low limit of detection of 45 CFU/mL based on the developed detection scaffold, offering good prospects in the diagnosis of bacterial illnesses.
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Affiliation(s)
- Xue Zhang
- Dental Department, People's Hospital of Chong Qing Liang Jiang New Area, Chongqing, 401120, China
| | - Jiali Zhang
- Dental Department, People's Hospital of Chong Qing Liang Jiang New Area, Chongqing, 401120, China
| | - Yongbin Wen
- Dental Department, People's Hospital of Chong Qing Liang Jiang New Area, Chongqing, 401120, China.
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Aldulaijan HA, Al-Zawawi AS, Shaheen MY, Ali D, Divakar DD, Basudan AM. Assessment of salivary alpha amylase and mucin-4 before and after non-surgical treatment of peri-implant mucositis. Int J Implant Dent 2022; 8:30. [PMID: 35834021 PMCID: PMC9283593 DOI: 10.1186/s40729-022-00429-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 06/30/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The present study was based on the null hypothesis that there is no difference in clinicoradiographic parameters and whole salivary alpha amylase (AA) and mucin-4 levels before and after non-surgical mechanical debridement (NSMD) of patients with peri-implant mucositis (PM). The aim was to assess whole salivary AA and mucin-4 levels before and after treatment of PM. METHODS Patients with PM (Group-1) and individuals without peri-implant diseases (Group-2) were included. Demographic data was collected and peri-implant modified plaque and bleeding indices (mPI and mBI, respectively), probing depth (PD) and crestal bone loss were measured at baseline. Levels of AA and mucin-4 were assessed in unstimulated whole saliva samples. All patients underwent full-mouth non-surgical periodontal therapy (NSPT) and NSMD; and clinical parameters and salivary biomarkers were re-assessed after 3 months. Level of significance was set at P < 0.01. RESULTS Twenty-six and 32 individuals were included in groups 1 and 2, respectively. None of the participants had periodontitis. At baseline clinical periodontal parameters (PI [P < 0.001], GI [P < 0.001], clinical AL [P < 0.001] and PD [P < 0.001]) were significantly high in Group-1 than Group-2. At 3-month follow-up, there was a statistically significant reduction in clinical periodontal and peri-implant parameters (PI [P < 0.01], GI [P < 0.01], and PD [P < 0.01]) in Group-1 compared with their baseline values. At baseline, salivary AA levels were significantly high in Group-1 than Group-2 (P < 0.01). At 3-month follow-up, there was no significant difference in whole salivary AA levels among patients in groups 1 and 2. CONCLUSIONS The AA and mucin-4 levels are potential biomarkers for evaluation of peri-implant diseases including PM. Mechanical instrumentation continues to be the most predictable treatment option for the management of peri-implant diseases.
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Affiliation(s)
- Hajer A Aldulaijan
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Abeer S Al-Zawawi
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Marwa Y Shaheen
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Dena Ali
- Department of General Dental Practice, Kuwait University, P. O. Box 24923, 13110, Safat, Kuwait
| | - Darshan Devang Divakar
- Department of Oral Medicine and Radiology, Sharavathi Dental College and Hospital, Shivamogga, 577204, Karnataka, India.,Department of Oral Medicine and Radiology, Faculty of Dentistry, Levy Mwanawasa Medical University (LMMU), Ministry of Health, Lusaka, Zambia
| | - Amani M Basudan
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, 11451, Saudi Arabia
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Silk sericin/PLGA electrospun scaffolds with anti-inflammatory drug-eluting properties for periodontal tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2022; 133:112723. [DOI: 10.1016/j.msec.2022.112723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/22/2022] [Accepted: 02/15/2022] [Indexed: 12/13/2022]
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Nrf2 in the Field of Dentistry with Special Attention to NLRP3. Antioxidants (Basel) 2022; 11:antiox11010149. [PMID: 35052653 PMCID: PMC8772975 DOI: 10.3390/antiox11010149] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/06/2022] [Accepted: 01/09/2022] [Indexed: 02/06/2023] Open
Abstract
The aim of this review article was to summarize the functional implications of the nuclear factor E2-related factor or nuclear factor (erythroid-derived 2)-like 2 (Nrf2), with special attention to the NACHT (nucleotide-binding oligomerization), LRR (leucine-rich repeat), and PYD (pyrin domain) domains-containing protein 3 (NLRP3) inflammasome in the field of dentistry. NLRP3 plays a crucial role in the progression of inflammatory and adaptive immune responses throughout the body. It is already known that this inflammasome is a key regulator of several systemic diseases. The initiation and activation of NLRP3 starts with the oral microbiome and its association with the pathogenesis and progression of several oral diseases, including periodontitis, periapical periodontitis, and oral squamous cell carcinoma (OSCC). The possible role of the inflammasome in oral disease conditions may involve the aberrant regulation of various response mechanisms, not only in the mouth but in the whole body. Understanding the cellular and molecular biology of the NLRP3 inflammasome and its relationship to Nrf2 is necessary for the rationale when suggesting it as a potential therapeutic target for treatment and prevention of oral inflammatory and immunological disorders. In this review, we highlighted the current knowledge about NLRP3, its likely role in the pathogenesis of various inflammatory oral processes, and its crosstalk with Nrf2, which might offer future possibilities for disease prevention and targeted therapy in the field of dentistry and oral health.
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Kreve S, Reis ACD. Bacterial adhesion to biomaterials: What regulates this attachment? A review. JAPANESE DENTAL SCIENCE REVIEW 2021; 57:85-96. [PMID: 34188729 PMCID: PMC8215285 DOI: 10.1016/j.jdsr.2021.05.003] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 05/07/2021] [Accepted: 05/23/2021] [Indexed: 12/14/2022] Open
Abstract
Bacterial adhesion to the surface of dental materials play a significant role in infections. The factors that govern microbial attachment involves different types of physical-chemical interactions and biological processes. Studying bacterial adhesion makes it possible to understand the mechanisms involved in attachment and helps in the search for technologies that promote antibacterial surfaces.
Bacterial attachment to biomaterials is of great interest to the medical and dental field due to its impact on dental implants, dental prostheses, and others, leading to the need to introduce methods for biofilm control and mitigation of infections. Biofilm adhesion is a multifactorial process and involves characteristics relevant to the bacterial cell as well as biological, chemical, and physical properties relative to the surface of biomaterials. Bacteria encountered different environmental conditions during their growth and developed interspecies communication strategies, as well as various mechanisms to detect the environment and facilitate survival, such as chemical sensors or physical detection mechanisms. However, the factors that govern microbial attachment to surfaces are not yet fully understood. In order to understand how bacteria interact with surfaces, as well as to characterize the physical-chemical properties of bacteria adhesins, and to determine their interrelation with the adhesion to the substrate, in recent years new techniques of atomic force microscopy (AFM) have been developed and helped by providing quantitative results. Thus, the purpose of this review is to gather current studies about the factors that regulate microbial adhesion to surfaces in order to offer a guide to studies to obtain technologies that provide an antimicrobial surface.
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Affiliation(s)
- Simone Kreve
- Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, USP-University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Andréa C Dos Reis
- Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, USP-University of São Paulo, Ribeirão Preto, SP, Brazil
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Minkiewicz-Zochniak A, Jarzynka S, Iwańska A, Strom K, Iwańczyk B, Bartel M, Mazur M, Pietruczuk-Padzik A, Konieczna M, Augustynowicz-Kopeć E, Olędzka G. Biofilm Formation on Dental Implant Biomaterials by Staphylococcus aureus Strains Isolated from Patients with Cystic Fibrosis. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2030. [PMID: 33920743 PMCID: PMC8073800 DOI: 10.3390/ma14082030] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 02/06/2023]
Abstract
Implants made of ceramic and metallic elements, which are used in dentistry, may either promote or hinder the colonization and adhesion of bacteria to the surface of the biomaterial to varying degrees. The increased interest in the use of dental implants, especially in patients with chronic systemic diseases such as cystic fibrosis (CF), is caused by an increase in disease complications. In this study, we evaluated the differences in the in vitro biofilm formation on the surface of biomaterials commonly used in dentistry (Ti-6Al-4V, cobalt-chromium alloy (CoCr), and zirconia) by Staphylococcus aureus isolated from patients with CF. We demonstrated that S. aureus adherence and growth depends on the type of material used and its surface topography. Weaker bacterial biofilm formation was observed on zirconia surfaces compared to titanium and cobalt-chromium alloy surfaces. Moreover, scanning electron microscopy showed clear differences in bacterial aggregation, depending on the type of biomaterial used. Over the past several decades, S. aureus strains have developed several mechanisms of resistance, especially in patients on chronic antibiotic treatment such as CF. Therefore, the selection of an appropriate implant biomaterial with limited microorganism adhesion characteristics can affect the occurrence and progression of oral cavity infections, particularly in patients with chronic systemic diseases.
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Affiliation(s)
- Anna Minkiewicz-Zochniak
- Department of Medical Biology, Medical University of Warsaw, Litewska 14/16, 00-575 Warsaw, Poland; (A.M.-Z.); (S.J.); (K.S.); (M.K.)
| | - Sylwia Jarzynka
- Department of Medical Biology, Medical University of Warsaw, Litewska 14/16, 00-575 Warsaw, Poland; (A.M.-Z.); (S.J.); (K.S.); (M.K.)
| | - Agnieszka Iwańska
- Department of Microbiology, National Tuberculosis and Lung Diseases Research Institute, Płocka 26, 01-138 Warsaw, Poland; (A.I.); (E.A.-K.)
| | - Kamila Strom
- Department of Medical Biology, Medical University of Warsaw, Litewska 14/16, 00-575 Warsaw, Poland; (A.M.-Z.); (S.J.); (K.S.); (M.K.)
| | - Bartłomiej Iwańczyk
- The Chair and Department of Oral Surgery, Medical University of Lublin, Karmelicka 7, 20-081 Lublin, Poland;
| | - Marta Bartel
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland; (M.B.); (M.M.)
| | - Maciej Mazur
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland; (M.B.); (M.M.)
| | - Anna Pietruczuk-Padzik
- Department of Pharmaceutical Microbiology, Centre for Preclinical Research and Technology, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1B, 02-097 Warsaw, Poland;
| | - Małgorzata Konieczna
- Department of Medical Biology, Medical University of Warsaw, Litewska 14/16, 00-575 Warsaw, Poland; (A.M.-Z.); (S.J.); (K.S.); (M.K.)
| | - Ewa Augustynowicz-Kopeć
- Department of Microbiology, National Tuberculosis and Lung Diseases Research Institute, Płocka 26, 01-138 Warsaw, Poland; (A.I.); (E.A.-K.)
| | - Gabriela Olędzka
- Department of Medical Biology, Medical University of Warsaw, Litewska 14/16, 00-575 Warsaw, Poland; (A.M.-Z.); (S.J.); (K.S.); (M.K.)
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d’Avanzo N, Bruno MC, Giudice A, Mancuso A, Gaetano FD, Cristiano MC, Paolino D, Fresta M. Influence of Materials Properties on Bio-Physical Features and Effectiveness of 3D-Scaffolds for Periodontal Regeneration. Molecules 2021; 26:1643. [PMID: 33804244 PMCID: PMC7999474 DOI: 10.3390/molecules26061643] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 12/14/2022] Open
Abstract
Periodontal diseases are multifactorial disorders, mainly due to severe infections and inflammation which affect the tissues (i.e., gum and dental bone) that support and surround the teeth. These pathologies are characterized by bleeding gums, pain, bad breath and, in more severe forms, can lead to the detachment of gum from teeth, causing their loss. To date it is estimated that severe periodontal diseases affect around 10% of the population worldwide thus making necessary the development of effective treatments able to both reduce the infections and inflammation in injured sites and improve the regeneration of damaged tissues. In this scenario, the use of 3D scaffolds can play a pivotal role by providing an effective platform for drugs, nanosystems, growth factors, stem cells, etc., improving the effectiveness of therapies and reducing their systemic side effects. The aim of this review is to describe the recent progress in periodontal regeneration, highlighting the influence of materials' properties used to realize three-dimensional (3D)-scaffolds, their bio-physical characteristics and their ability to provide a biocompatible platform able to embed nanosystems.
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Affiliation(s)
- Nicola d’Avanzo
- Department of Health Science, University “Magna Græcia” of Catanzaro, Campus Universitario—Germaneto, Viale Europa, I-88100 Catanzaro, Italy; (N.d.); (M.C.B.); (A.G.); (A.M.)
- Department of Pharmacy, University of Chieti−Pescara “G. d’Annunzio”, I-66100 Chieti, Italy
| | - Maria Chiara Bruno
- Department of Health Science, University “Magna Græcia” of Catanzaro, Campus Universitario—Germaneto, Viale Europa, I-88100 Catanzaro, Italy; (N.d.); (M.C.B.); (A.G.); (A.M.)
| | - Amerigo Giudice
- Department of Health Science, University “Magna Græcia” of Catanzaro, Campus Universitario—Germaneto, Viale Europa, I-88100 Catanzaro, Italy; (N.d.); (M.C.B.); (A.G.); (A.M.)
| | - Antonia Mancuso
- Department of Health Science, University “Magna Græcia” of Catanzaro, Campus Universitario—Germaneto, Viale Europa, I-88100 Catanzaro, Italy; (N.d.); (M.C.B.); (A.G.); (A.M.)
| | - Federica De Gaetano
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D’Alcontres 31, I-98166 Messina, Italy;
| | - Maria Chiara Cristiano
- Department of Experimental and Clinical Medicine, University “Magna Græcia” of Catanzaro, Campus Universitario—Germaneto, Viale Europa, I-88100 Catanzaro, Italy;
| | - Donatella Paolino
- Department of Experimental and Clinical Medicine, University “Magna Græcia” of Catanzaro, Campus Universitario—Germaneto, Viale Europa, I-88100 Catanzaro, Italy;
| | - Massimo Fresta
- Department of Health Science, University “Magna Græcia” of Catanzaro, Campus Universitario—Germaneto, Viale Europa, I-88100 Catanzaro, Italy; (N.d.); (M.C.B.); (A.G.); (A.M.)
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Gonçalves IMR, Herrero ER, Carvalho O, Henriques B, Silva FS, Teughels W, Souza JCM. Antibiofilm effects of titanium surfaces modified by laser texturing and hot-pressing sintering with silver. J Biomed Mater Res B Appl Biomater 2021; 109:1588-1600. [PMID: 33622023 DOI: 10.1002/jbm.b.34817] [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: 08/17/2020] [Revised: 01/23/2021] [Accepted: 02/01/2021] [Indexed: 11/07/2022]
Abstract
Peri-implant diseases are one of the main causes of dental implant failure. New strategies for dental implants manufacturing have been developed to prevent the accumulation of bacteria and related inflammatory reactions. The main aim of this work was to develop laser-treated titanium surfaces covered with silver that generate a electrical dipole to inhibit the oral bacteria accumulation. Two approaches were developed for that purpose. In one approach a pattern of different titanium dioxide thickness was produced on the titanium surface, using a Q-Switched Nd:YAG laser system operating at 1064 nm. The second approach was to incorporate silver particles on a laser textured titanium surface. The incorporation of the silver was performed by laser sintering and hot-pressing approaches. The anti-biofilm effect of the discs were tested against biofilms involving 14 different bacterial strains growth for 24 and 72 hr. The morphological aspects of the surfaces were evaluated by optical and field emission guns scanning electronical microscopy (FEGSEM) and therefore the wettability and roughness were also assessed. Physicochemical analyses revealed that the test surfaces were hydrophilic and moderately rough. The oxidized titanium surfaces showed no signs of antibacterial effects when compared to polished discs. However, the discs with silver revealed a decrease of accumulation of Porphyromonas gingivalis and Prevotella intermedia strains. Thus, the combination of Nd:YAG laser irradiation and hot-pressing was effective to produce silver-based patterns on titanium surfaces to inhibit the growth of pathogenic bacterial species. The laser parameters can be optimized to achieve different patterns, roughness, and thickness of the modified titanium layer regarding the type and region of the implant.
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Affiliation(s)
- Inês M R Gonçalves
- Center for MicroElectroMechanical Systems (CMEMS-UMINHO), University of Minho, Guimarães, Braga, 4800-058, Portugal
| | - Esteban R Herrero
- Department of Oral Health Sciences, Periodontology, KU Leuven & Dentistry, University Hospitals Leuven, Katholieke Universiteit Leuven, Leuven, 3000, Belgium
| | - Oscar Carvalho
- Center for MicroElectroMechanical Systems (CMEMS-UMINHO), University of Minho, Guimarães, Braga, 4800-058, Portugal
| | - Bruno Henriques
- Center for MicroElectroMechanical Systems (CMEMS-UMINHO), University of Minho, Guimarães, Braga, 4800-058, Portugal
| | - Filipe S Silva
- Center for MicroElectroMechanical Systems (CMEMS-UMINHO), University of Minho, Guimarães, Braga, 4800-058, Portugal
| | - Wim Teughels
- Department of Oral Health Sciences, Periodontology, KU Leuven & Dentistry, University Hospitals Leuven, Katholieke Universiteit Leuven, Leuven, 3000, Belgium
| | - Júlio C M Souza
- Center for MicroElectroMechanical Systems (CMEMS-UMINHO), University of Minho, Guimarães, Braga, 4800-058, Portugal.,Department of Dental Sciences, University Institute of Health Sciences (IUCS), CESPU, Gandra PRD, 4585-116, Portugal
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12
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In vitro Interactions between Streptococcus intermedius and Streptococcus salivarius K12 on a Titanium Cylindrical Surface. Pathogens 2020; 9:pathogens9121069. [PMID: 33419248 PMCID: PMC7765831 DOI: 10.3390/pathogens9121069] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/11/2020] [Accepted: 12/17/2020] [Indexed: 12/14/2022] Open
Abstract
Peri-implantitis is a steadily rising disease and is caused by oral bacterial pathogens able to form biofilm on implant surfaces and peri-implant tissues, making antibiotics treatment less effective. The use of commercial probiotics against oral pathogens could serve as an alternative to prevent biofilm formation. Streptococcus intermedius is one of the early colonizers of biofilm formation in dental implants. The aim of this study was to model the interaction between S. intermedius and Streptococcus salivarius strain K12, a probiotic bacterium producing bacteriocins. S. intermedius was co-cultured with S. salivarius K12 in an in vitro model simulating the biofilm formation in a dental implant composed by a titanium cylinder system. Biofilm formation rate was assessed by Real-Time PCR quantification of bacterial count and expression levels of luxS gene, used in response to cell density in the biofilm. Biofilm formation, bacteriocin production, luxS expression patterns were found to be already expressed within the first 12 h. More importantly, S. salivarius K12 was able to counter the biofilm formation in a titanium cylinder under the tested condition. In conclusion, our dental implant model may be useful for exploring probiotic-pathogen interaction to find an alternative to antibiotics for peri-implantitis treatment.
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13
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Jin ZH, Peng MD, Li Q. The effect of implant neck microthread design on stress distribution of peri-implant bone with different level: A finite element analysis. J Dent Sci 2020; 15:466-471. [PMID: 33505618 PMCID: PMC7816038 DOI: 10.1016/j.jds.2019.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 12/02/2019] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND/PURPOSE Significant research has proposed that the implant with microthread in the neck can significantly reduce marginal bone loss, but whether it is consistent in the condition of marginal bone loss is still unknown. The objective of this study is to investigate the effect of microthread on stress distribution in peri-implant bone with different bone level using finite element analysis. MATERIALS AND METHODS A series of computational models of mandible segments with different bone resorption and implant models with or without microthread in the neck was installed by computer-aided design software. The simulated occlusal force of 150N was applied buccolingually on the top center point of implant. The FEA was performed, and the von Mises stress, principal stress and shear stress in peri-implant bone were recorded and analyzed. RESULTS In all models, the T-neck group exhibits higher von Mises stress and principal stress, as well as lower shear stress than S-neck group. Three types of stresses increase with the depth of bone resorption developed, but the differences of shear stress between two groups of implants were gradually decreased. CONCLUSION The micro-thread design in implant neck can reduce marginal bone loss by decreasing shear stress in peri-implant bone, but this effect is gradually weakened with the decline of the marginal bone level.
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Affiliation(s)
- Zhi-Heng Jin
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST), Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan, China
- Dept. of Prosthodontics, Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Meng-Dong Peng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST), Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan, China
- Dept. of Prosthodontics, Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Qing Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST), Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan, China
- Dept. of Prosthodontics, Hospital of Stomatology, Wuhan University, Wuhan, China
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14
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Inubushi J, Liang K. Update on minocycline in vitro activity against odontogenic bacteria. J Infect Chemother 2020; 26:1334-1337. [PMID: 32933859 DOI: 10.1016/j.jiac.2020.08.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/21/2020] [Accepted: 08/18/2020] [Indexed: 11/17/2022]
Abstract
Periodontitis, which is a chronic inflammation caused by biofilm from numerous gram-negative and -positive oral bacterial species between gingiva and tooth, is known to have a poor prognosis. Susceptibility of standard strains (19 strains) and clinical isolates (90 strains) of aerobic and anaerobic oral bacteria, including a recently recovered as novel pathogens for periodontitis called Filifactor alocis, was tested to minocycline (MINO) by using the agar dilution method according to the Clinical and Laboratory Standards Institute. MINO is a well-used therapeutic antibiotic for periodontits. In this study, minimum inhibitory concentrations (MICs) of MINO against Aggregatibacter actinomycetemcomitans (n = 1), Porphyromonas gingivalis (n = 5), Prevotella intermedia (n = 1), Tannerella forsythia (n = 1) and F. alocis (n = 1), were 0.12, ≤0.016-0.03, ≤0.016, 0.03, and 2 μg/mL, respectively. MICs range of MINO against clinical isolates (10 isolates each) Streptococcus intermedius, P. gingivalis, P. intermedia, Fusobacterum nucleatum, Parvimonas micra were 0.06-16, ≤0.016-0.03, ≤0.016-1, ≤0.016-0.12, and ≤0.016-0.25 μg/mL, respectively. These results showed that MINO has superior in vitro activities against to known and recent recovered oral bacteria. Moreover, low prevalence in non-susceptible bacteria was observed to MINO.
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15
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Allan B, Ruan R, Landao-Bassonga E, Gillman N, Wang T, Gao J, Ruan Y, Xu Y, Lee C, Goonewardene M, Zheng M. Collagen Membrane for Guided Bone Regeneration in Dental and Orthopedic Applications. Tissue Eng Part A 2020; 27:372-381. [PMID: 32741266 DOI: 10.1089/ten.tea.2020.0140] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Treatment of cortical bone defects is a clinical challenge. Guided bone regeneration (GBR), commonly used in oral and maxillofacial dental surgery, may show promise for orthopedic applications in repair of cortical bone defects. However, a limitation in the use of GBR for cortical bone defects is the lack of an ideal scaffold that provides sufficient mechanical support to bridge the cortical bone with minimal interference in the repair process. We have developed a new collagen membrane, CelGro™, for use in GBR. We report the material characterization of CelGro and evaluate the performance of CelGro in translational preclinical and clinical studies. The results show CelGro has a bilayer structure of different fiber alignment and is composed almost exclusively of type I collagen. CelGro was found to be completely acellular and free from xenoantigen, α-gal (galactose-alpha-1,3-galactose). In the preclinical study of a rabbit cortical bone defect model, CelGro demonstrated enhanced bone-remodeling activity and cortical bone healing. Microcomputed tomography evaluation showed early bony bridging over the defect area 30 days postoperatively, and nearly complete restoration of mature cortical bone at the bone defect site 60 days postoperatively. Histological analysis 60 days after surgery further confirmed that CelGro enables bridging of the cortical bone defect by induction of newly formed cortical bone. Compared to a commercially available collagen membrane, Bio-Gide®, CelGro showed much better cortical alignment and reduced porosity at the defect interface. As selection of orthopedic patients with cortical bone defects is complex, we conducted a clinical study evaluating the performance of CelGro in guided bone regeneration around dental implants. CelGro was used in GBR procedures in a total of 16 implants placed in 10 participants. Cone-beam computed tomography images show significantly increased bone formation both horizontally and vertically, which provides sufficient support to stabilize implants within 4 months. Together, the findings of our study demonstrate that CelGro is an ideal membrane for GBR not only in oral and maxillofacial reconstructive surgery but also in orthopedic applications (Clinical Trial ID ACTRN12615000027516).
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Affiliation(s)
- Brent Allan
- Centre for Orthopaedic Research, Faculty of Health and Medical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia.,Oral and Maxillofacial Department, St John of God Subiaco Hospital, Subiaco, Western Australia, Australia.,Orthodontics, Dental School, Faculty of Health and Medical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Rui Ruan
- Centre for Orthopaedic Research, Faculty of Health and Medical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Euphemie Landao-Bassonga
- Centre for Orthopaedic Research, Faculty of Health and Medical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Nicholas Gillman
- Griffith University School of Medicine, Gold Coast, Queensland, Australia
| | - Tao Wang
- Centre for Orthopaedic Research, Faculty of Health and Medical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Junjie Gao
- Centre for Orthopaedic Research, Faculty of Health and Medical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia.,Perron Institute for Neurological and Translational Science, Nedlands, Western Australia, Australia
| | - Yonghua Ruan
- Department of Pathology, Kunming Medical University, Kunming, China
| | - Yuan Xu
- Medical Imaging Center, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Clair Lee
- Centre for Orthopaedic Research, Faculty of Health and Medical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Mithran Goonewardene
- Orthodontics, Dental School, Faculty of Health and Medical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Minghao Zheng
- Centre for Orthopaedic Research, Faculty of Health and Medical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia.,Perron Institute for Neurological and Translational Science, Nedlands, Western Australia, Australia
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16
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Re K, Patel S, Gandhi J, Suh Y, Reid I, Joshi G, Smith NL, Khan SA. Clinical utility of hyperbaric oxygen therapy in dentistry. Med Gas Res 2020; 9:93-100. [PMID: 31249258 PMCID: PMC6607863 DOI: 10.4103/2045-9912.260651] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
This fuller impact of the use of hyperbaric oxygen therapy within dentistry is taking greater notice with newer research findings. There are new advancements in research regarding postradiotherapy cases, osteonecrosis of the jaw, osteomyelitis, periodontal disease, and dental implants. Hyperbaric oxygen therapy can even be used in conjunction with other procedures such as bone grafting. Although the research and clinical utility has come a long way, there are several complications to be mindful of during the application of hyperbaric oxygen therapy.
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Affiliation(s)
- Kaitlyn Re
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA
| | - Shrey Patel
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA
| | - Jason Gandhi
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA; Medical Student Research Institute, St. George's University School of Medicine, Grenada, West Indies
| | - Yiji Suh
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA
| | - Inefta Reid
- Department of Internal Medicine, Stony Brook Southampton Hospital, Southampton, NY, USA
| | - Gunjan Joshi
- Department of Internal Medicine, Stony Brook Southampton Hospital, Southampton, NY, USA
| | | | - Sardar Ali Khan
- Department of Physiology and Biophysics; Department of Urology, Stony Brook University School of Medicine, Stony Brook, NY, USA
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17
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Oliveira Silva TS, Freitas AR, Albuquerque RF, Pedrazzi V, Ribeiro RF, Nascimento C. A 3‐year longitudinal prospective study assessing microbial profile and clinical outcomes of single‐unit cement‐retained implant restorations: Zirconia versus titanium abutments. Clin Implant Dent Relat Res 2020; 22:301-310. [DOI: 10.1111/cid.12888] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 01/16/2020] [Accepted: 01/22/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Thalisson S. Oliveira Silva
- Department of Dental Materials and Prosthodontics, Faculty of Dentistry of Ribeirão Preto, Molecular Diagnosis Laboratory University of São Paulo Ribeirão Preto São Paulo Brazil
| | - Alice R. Freitas
- Department of Dental Materials and Prosthodontics, Faculty of Dentistry of Ribeirão Preto, Molecular Diagnosis Laboratory University of São Paulo Ribeirão Preto São Paulo Brazil
| | - Rubens F. Albuquerque
- Department of Dental Materials and Prosthodontics, Faculty of Dentistry of Ribeirão Preto, Molecular Diagnosis Laboratory University of São Paulo Ribeirão Preto São Paulo Brazil
| | - Vinícius Pedrazzi
- Department of Dental Materials and Prosthodontics, Faculty of Dentistry of Ribeirão Preto, Molecular Diagnosis Laboratory University of São Paulo Ribeirão Preto São Paulo Brazil
| | - Ricardo F. Ribeiro
- Department of Dental Materials and Prosthodontics, Faculty of Dentistry of Ribeirão Preto, Molecular Diagnosis Laboratory University of São Paulo Ribeirão Preto São Paulo Brazil
| | - Cássio Nascimento
- Department of Dental Materials and Prosthodontics, Faculty of Dentistry of Ribeirão Preto, Molecular Diagnosis Laboratory University of São Paulo Ribeirão Preto São Paulo Brazil
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Porphyromonas Gingivalis Load is Balanced by 0.20% Chlorhexidine Gel. A Randomized, Double-Blind, Controlled, Microbiological and Immunohistochemical Human Study. J Clin Med 2020; 9:jcm9010284. [PMID: 31968610 PMCID: PMC7019967 DOI: 10.3390/jcm9010284] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/09/2020] [Accepted: 01/16/2020] [Indexed: 12/17/2022] Open
Abstract
Microbial contamination could compromise the stability of dental implants increasing the risk of inflammatory reactions in the surrounding soft tissues. In this human, randomized, double-blind, clinical study, the presence of Porphyromonas gingivalis on the healing abutment and the inflammatory infiltrate surrounding peri-implant soft tissues were investigated. Experiments were done in order to clarify the effect of 0.20% chlorhexidine (CHX) versus placebo, applied during each rehabilitation stage. Thirty patients (15 per group) were included. The load of adhering P. gingivalis on the healing screw were quantified by quantitative Polymerase Chain Reaction (qPCR) Taq-Man. Immunohistochemical analysis was carried out on the gingival biopsy. Moreover, clinical data were recorded. Analysis of variance and the Holm-Sidak test was used to evaluate differences between groups. The results showed a significant low presence of P. gingivalis load in healing abutments belonging to the 0.20% CHX group. Overall, the differences in terms of P. gingivalis DNA copy number between two groups were statistically significant (p < 0.01). All implants showed very low plaque and bleeding scores, but the placebo group appeared to have the highest expression of inflammation markers for T Lymphocytes, B Lymphocytes and macrophages Cluster definitions (CD3, CD20 and CD68). The use of 0.20% CHX could be recommended in all clinical procedures as it reduces significantly P. gingivalis load and host inflammatory response around implants.
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19
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Pimentel SP, Fontes M, Ribeiro FV, Corrêa MG, Nishii D, Cirano FR, Casati MZ, Casarin RCV. Smoking habit modulates peri-implant microbiome: A case-control study. J Periodontal Res 2018; 53:983-991. [DOI: 10.1111/jre.12597] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 05/22/2018] [Accepted: 07/12/2018] [Indexed: 02/06/2023]
Affiliation(s)
- Suzana P. Pimentel
- Dental Research Division; School of Dentistry; Paulista University; São Paulo SP Brazil
| | - Melline Fontes
- Life Sciences Core Facility (LaCTAD); University of Campinas (UNICAMP); Campinas Brazil
| | - Fernanda V. Ribeiro
- Dental Research Division; School of Dentistry; Paulista University; São Paulo SP Brazil
| | - Mônica G. Corrêa
- Dental Research Division; School of Dentistry; Paulista University; São Paulo SP Brazil
| | - Denise Nishii
- Dental Research Division; School of Dentistry; Paulista University; São Paulo SP Brazil
| | - Fabiano R. Cirano
- Dental Research Division; School of Dentistry; Paulista University; São Paulo SP Brazil
| | - Marcio Z. Casati
- Dental Research Division; School of Dentistry; Paulista University; São Paulo SP Brazil
| | - Renato C. V. Casarin
- Dental Research Division; School of Dentistry; Paulista University; São Paulo SP Brazil
- Department of Periodontics and Prosthodontics; Piracicaba Dental School; University of Campinas (UNICAMP); Piracicaba Brazil
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20
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Guided Bone Regeneration Using Collagen Scaffolds, Growth Factors, and Periodontal Ligament Stem Cells for Treatment of Peri-Implant Bone Defects In Vivo. Stem Cells Int 2017; 2017:3548435. [PMID: 28951742 PMCID: PMC5603746 DOI: 10.1155/2017/3548435] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 06/29/2017] [Accepted: 07/18/2017] [Indexed: 12/31/2022] Open
Abstract
Introduction The aim of the study was an evaluation of different approaches for guided bone regeneration (GBR) of peri-implant defects in an in vivo animal model. Materials and Methods In minipigs (n = 15), peri-implant defects around calcium phosphate- (CaP-; n = 46) coated implants were created and randomly filled with (1) blank, (2) collagen/hydroxylapatite/β-tricalcium phosphate scaffold (CHT), (3) CHT + growth factor cocktail (GFC), (4) jellyfish collagen matrix, (5) jellyfish collagen matrix + GFC, (6) collagen powder, and (7) collagen powder + periodontal ligament stem cells (PDLSC). Additional collagen membranes were used for coverage of the defects. After 120 days of healing, bone growth was evaluated histologically (bone to implant contact (BIC;%)), vertical bone apposition (VBA; mm), and new bone height (NBH; %). Results In all groups, new bone formation was seen. Though, when compared to the blank group, no significant differences were detected for all parameters. BIC and NBH in the group with collagen matrix as well as the group with the collagen matrix + GFC were significantly less when compared to the collagen powder group (all: p < 0.003). Conclusion GBR procedures, in combination with CaP-coated implants, will lead to an enhancement of peri-implant bone growth. There was no additional significant enhancement of osseous regeneration when using GFC or PDLSC.
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