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Damanaki A, Beisel-Memmert S, Nokhbehsaim M, Abedi A, Rath-Deschner B, Nogueira AVB, Deschner J. Influence of Occlusal Hypofunction on Alveolar Bone Healing in Rats. Int J Mol Sci 2023; 24:9744. [PMID: 37298695 PMCID: PMC10253992 DOI: 10.3390/ijms24119744] [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: 01/31/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023] Open
Abstract
The aim of this in vivo study was to investigate the effect of occlusal hypofunction on alveolar bone healing in the absence or presence of an enamel matrix derivative (EMD). A standardized fenestration defect over the root of the mandibular first molar in 15 Wistar rats was created. Occlusal hypofunction was induced by extraction of the antagonist. Regenerative therapy was performed by applying EMD to the fenestration defect. The following three groups were established: (a) normal occlusion without EMD treatment, (b) occlusal hypofunction without EMD treatment, and (c) occlusal hypofunction with EMD treatment. After four weeks, all animals were sacrificed, and histological (hematoxylin and eosin, tartrate-resistant acid phosphatase) as well as immunohistochemical analyses (periostin, osteopontin, osteocalcin) were performed. The occlusal hypofunction group showed delayed bone regeneration compared to the group with normal occlusion. The application of EMD could partially, but not completely, compensate for the inhibitory effects of occlusal hypofunction on bone healing, as evidenced by hematoxylin and eosin and immunohistochemistry for the aforementioned molecules. Our results suggest that normal occlusal loading, but not occlusal hypofunction, is beneficial to alveolar bone healing. Adequate occlusal loading appears to be as advantageous for alveolar bone healing as the regenerative potential of EMD.
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Affiliation(s)
- Anna Damanaki
- Department of Periodontology and Operative Dentistry, University Medical Center, University of Mainz, 55131 Mainz, Germany
| | - Svenja Beisel-Memmert
- Department of Orthodontics, Center of Dento-Maxillo-Facial Medicine, University of Bonn, 53111 Bonn, Germany
| | - Marjan Nokhbehsaim
- Section of Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, 53111 Bonn, Germany
| | - Ali Abedi
- Department of Periodontology and Operative Dentistry, University Medical Center, University of Mainz, 55131 Mainz, Germany
| | - Birgit Rath-Deschner
- Department of Orthodontics, Center of Dento-Maxillo-Facial Medicine, University of Bonn, 53111 Bonn, Germany
| | - Andressa V. B. Nogueira
- Department of Periodontology and Operative Dentistry, University Medical Center, University of Mainz, 55131 Mainz, Germany
| | - James Deschner
- Department of Periodontology and Operative Dentistry, University Medical Center, University of Mainz, 55131 Mainz, Germany
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Effects of Obesity on Bone Healing in Rats. Int J Mol Sci 2021; 22:ijms222413339. [PMID: 34948136 PMCID: PMC8704371 DOI: 10.3390/ijms222413339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/05/2021] [Accepted: 12/07/2021] [Indexed: 12/12/2022] Open
Abstract
Although the association between periodontitis and obesity is well explored, it is unclear whether obesity is associated with a worse therapeutic outcome after periodontal treatment. The aim of this study was to investigate the effects of obesity on bone healing with and without the application of regeneration-promoting molecules. A standardized bone fenestration-type defect was created over the root of the mandibular first molar in 15 Wistar rats. Ten animals received a high-fat, high-sucrose diet (HFSD), while the remaining five animals were fed a standard diet. During surgery, the fenestration defects from half of the HFSD-fed, i.e., obese animals, were treated with regeneration-promoting molecules (enamel matrix derivative; EMD). After four weeks, bone healing was evaluated by histomorphometry, TRAP staining and immunohistochemistry for RUNX2 and osteopontin. The analyses revealed that the spontaneous healing of the periodontal defects was compromised by obesity. Application of EMD partially compensated for the negative effect of obesity. Nevertheless, EMD-stimulated bone healing in obese animals was not better than the spontaneous healing in the obesity-free control group, indicating that obesity may also inhibit the stimulatory effects of regeneration-promoting molecules. Our results show that obesity can negatively influence bone healing and suggest that bone healing may be compromised in humans.
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Isik Andrikopoulos G, Farsalinos K, Poulas K. Electronic Nicotine Delivery Systems (ENDS) and Their Relevance in Oral Health. TOXICS 2019; 7:toxics7040061. [PMID: 31817732 PMCID: PMC6958319 DOI: 10.3390/toxics7040061] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/27/2019] [Accepted: 12/04/2019] [Indexed: 02/07/2023]
Abstract
The number and popularity of electronic nicotine delivery systems (ENDS) and especially e-cigarettes (e-cigs) have been increasing in the last decade. Although ENDS owe their popularity to excluding the harmful chemicals that are present in tobacco smoke, there is a debate whether they are safe, regulated, and as harmless as they are assumed to be and have potential unknown long-term effects. Involvement of cigarette smoking to the progression of periodontal diseases, other adverse oral health outcomes, and its detrimental effects to oral health are well-described. ENDS producer companies claim that these products can improve oral health by providing alternatives to smoking. However, the effect of e-cigs on oral health is not fully understood and is still debated among many scientists and clinicians. The number of studies addressing the potential toxic effect of ENDS or e-cig aerosol on oral cells is limited along with the clinical studies which are still preliminary, and their sample size is limited. The long-term effects of inhaled aerosols and the potential synergistic effect of the e-cigs components are not known. It is essential and of utmost importance to determine whether exposure to ENDS aerosol contributes to the progression of periodontal diseases and how it affects periodontal ligament and gingival cells which are believed to be its first targets. This review briefly summarizes the available evidence about the effects of e-cigs on periodontal health including several pathophysiological events, such as oxidative stress, DNA damage, inflammation, cellular senescence, dysregulated repair, and periodontal diseases.
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Affiliation(s)
| | - Konstantinos Farsalinos
- Department of Pharmacy, University of Patras, Rio, 26500 Patras, Greece; (G.I.A.); (K.F.)
- Department of Cardiology, Onassis Cardiac Surgery Center, 17674 Kallithea, Greece
- National School of Public Health, Leof. Alexandras 196, 111521 Athens, Greece
| | - Konstantinos Poulas
- Department of Pharmacy, University of Patras, Rio, 26500 Patras, Greece; (G.I.A.); (K.F.)
- Institute of Research and Innovation NONSMOKE TEAM, Patras Science Park, Stadiou, Platani, Rio, 26504 Patras, Greece
- Correspondence: ; Tel.: +30-2610-962353
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Sallum EA, Ribeiro FV, Ruiz KS, Sallum AW. Experimental and clinical studies on regenerative periodontal therapy. Periodontol 2000 2019; 79:22-55. [PMID: 30892759 DOI: 10.1111/prd.12246] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The recognition of a periodontal therapy as a regenerative procedure requires the demonstration of new cementum, periodontal ligament, and bone coronal to the base of the defect. A diversity of regenerative strategies has been evaluated, including root surface conditioning, bone grafts and bone substitute materials, guided tissue regeneration, enamel matrix proteins, growth/differentiation factors, combined therapies and, more recently, tissue-engineering approaches. The aim of this chapter of Periodontology 2000 is to review the research carried out in Latin America in the field of periodontal regeneration, focusing mainly on studies using preclinical models (animal models) and randomized controlled clinical trials. This review may help clinicians and researchers to evaluate the current status of the therapies available and to discuss the challenges that must be faced in order to achieve predictable periodontal regeneration in clinical practice.
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Affiliation(s)
- Enilson A Sallum
- Division of Periodontics, Department of Prosthodontics and Periodontics, School of Dentistry, State University of Campinas - UNICAMP, Piracicaba, São Paulo, Brazil
| | - Fernanda V Ribeiro
- Dental Research Division, School of Dentistry, Paulista University, São Paulo, São Paulo, Brazil
| | - Karina S Ruiz
- Division of Periodontics, Department of Prosthodontics and Periodontics, School of Dentistry, State University of Campinas - UNICAMP, Piracicaba, São Paulo, Brazil
| | - Antonio W Sallum
- Division of Periodontics, Department of Prosthodontics and Periodontics, School of Dentistry, State University of Campinas - UNICAMP, Piracicaba, São Paulo, Brazil
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Javed F, Kellesarian SV, Sundar IK, Romanos GE, Rahman I. Recent updates on electronic cigarette aerosol and inhaled nicotine effects on periodontal and pulmonary tissues. Oral Dis 2017; 23:1052-1057. [PMID: 28168771 DOI: 10.1111/odi.12652] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 01/30/2017] [Accepted: 02/01/2017] [Indexed: 01/06/2023]
Abstract
E-cigarette-derived inhaled nicotine may contribute to the pathogenesis of periodontal and pulmonary diseases in particular via lung inflammation, injurious, and dysregulated repair responses. Nicotine is shown to have antiproliferative properties and affects fibroblasts in vitro, which may interfere in tissue myofibroblast differentiation in e-cig users. This will affect the ability to heal wounds by decreasing wound contraction. In periodontics, direct exposure to e-vapor has been shown to produce harmful effects in periodontal ligament and gingival fibroblasts in culture. This is due to the generation of reactive oxygen species/aldehydes/carbonyls from e-cig aerosol, leading to protein carbonylation of extracellular matrix and DNA adducts/damage. A limited number of studies regarding the effects of e-cig in oral and lung health are available. However, no reports are available to directly link the deleterious effects on e-cigs, inhaled nicotine, and flavorings aerosol on periodontal and pulmonary health in particular to identify the risk of oral diseases by e-cigarettes and nicotine aerosols. This mini-review summarizes the recent perspectives on e-cigarettes including inhaled nicotine effects on several pathophysiological events, such as oxidative stress, DNA damage, innate host response, inflammation, cellular senescence, profibrogenic and dysregulated repair, leading to lung remodeling, oral submucous fibrosis, and periodontal diseases.
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Affiliation(s)
- F Javed
- Department of General Dentistry, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, USA
| | - S V Kellesarian
- Department of General Dentistry, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, USA
| | - I K Sundar
- Department of Environmental Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - G E Romanos
- Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, NY, USA.,Department of Oral Surgery and Implant Dentistry, Johann Wolfgang Goethe University, Dental School, Frankfurt, Germany
| | - I Rahman
- Department of Environmental Medicine, University of Rochester Medical Center, Rochester, NY, USA
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Corrêa MG, Gomes Campos ML, Marques MR, Ambrosano GMB, Casati MZ, Nociti FH, Sallum EA. Alcohol intake may impair bone density and new cementum formation after enamel matrix derivative treatment: histometric study in rats. J Periodontal Res 2015; 51:60-9. [DOI: 10.1111/jre.12279] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2015] [Indexed: 12/19/2022]
Affiliation(s)
- M. G. Corrêa
- Division of Periodontics; Department of Prosthodontics and Periodontics; Piracicaba Dental School; University of Campinas; Piracicaba São Paulo Brazil
| | - M. L. Gomes Campos
- Division of Periodontics; Department of Prosthodontics and Periodontics; Piracicaba Dental School; University of Campinas; Piracicaba São Paulo Brazil
| | - M. R. Marques
- Division of Histology; Department of Morphology; Piracicaba Dental School; University of Campinas; Piracicaba São Paulo Brazil
| | - G. M. B. Ambrosano
- Division of Biostatistics; Department of Community Dentistry; Piracicaba Dental School; University of Campinas; Piracicaba São Paulo Brazil
| | - M. Z. Casati
- Division of Periodontics; Department of Prosthodontics and Periodontics; Piracicaba Dental School; University of Campinas; Piracicaba São Paulo Brazil
| | - F. H. Nociti
- Division of Periodontics; Department of Prosthodontics and Periodontics; Piracicaba Dental School; University of Campinas; Piracicaba São Paulo Brazil
| | - E. A. Sallum
- Division of Periodontics; Department of Prosthodontics and Periodontics; Piracicaba Dental School; University of Campinas; Piracicaba São Paulo Brazil
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Corrêa MG, Gomes Campos ML, Marques MR, Bovi Ambrosano GM, Casati MZ, Nociti FH, Sallum EA. Outcome of enamel matrix derivative treatment in the presence of chronic stress: histometric study in rats. J Periodontol 2013; 85:e259-67. [PMID: 24283657 DOI: 10.1902/jop.2013.130383] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Psychologic stress and clinical hypercortisolism have been related to direct effects on bone metabolism. However, there is a lack of information regarding the outcomes of regenerative approaches under the influence of chronic stress (CS). Enamel matrix derivative (EMD) has been used in periodontal regenerative procedures, resulting in improvement of clinical parameters. Thus, the aim of this histomorphometric study is to evaluate the healing of periodontal defects after treatment with EMD under the influence of CS in the rat model. METHODS Twenty Wistar rats were randomly assigned to two groups; G1: CS (restraint stress for 12 hours/day) (n = 10), and G2: not exposed to CS (n = 10). Fifteen days after initiation of CS, fenestration defects were created at the buccal aspect of the first mandibular molar of all animals from both groups. After the surgeries, the defects of each animal were randomly assigned to two subgroups: non-treated control and treated with EMD. The animals were euthanized 21 days later. RESULTS G1 showed less bone density (BD) compared to G2. EMD provided an increased defect fill (DF) in G1 and higher BD and new cementum formation (NCF) in both groups. The number of tartrate-resistant acid phosphatase-positive osteoclasts was significantly higher in G1 when compared to G2 and in EMD-treated sites of both groups. CONCLUSIONS CS may produce a significant detrimental effect on BD. EMD may provide greater DF compared to non-treated control in the presence of CS and increased BD and NCF in the presence or absence of CS.
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Affiliation(s)
- Mônica G Corrêa
- Department of Prosthodontics and Periodontics, Division of Periodontics, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
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Corrêa MG, Gomes Campos ML, Marques MR, Casati MZ, Nociti FH, Sallum EA. Histometric Analysis of the Effect of Enamel Matrix Derivative on the Healing of Periodontal Defects in Rats With Diabetes. J Periodontol 2013; 84:1309-18. [DOI: 10.1902/jop.2012.120354] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Vasconcelos DFP, Marques MR, Benatti BB, Barros SP, Nociti FH, Novaes PD. Intermittent parathyroid hormone administration improves periodontal healing in rats. J Periodontol 2013; 85:721-8. [PMID: 23895251 DOI: 10.1902/jop.2013.130155] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Intermittent administration of parathyroid hormone (PTH) promotes new bone formation in patients with osteoporosis and bone fractures. It was shown previously that PTH also reduces periodontitis-related bone loss. The aim of this study is to evaluate the effect of treatment with PTH on periodontal healing in rats. METHODS Fenestration defects were created at the buccal surface of the distal root of the mandibular first molars, and both periodontal ligament (PDL) and cementum were removed. Animals were then assigned to two groups (eight animals per group): group 1: control, placebo administration; and group 2: test, human PTH (hPTH) 1-34 administration at a concentration of 40 μg/kg. For both groups, the animals were injected every 2 days, and the animals were sacrificed at 14 and 21 days after surgery. Specimens were harvested and processed for routine decalcified histologic sections. The following parameters were assessed: 1) remaining bone defect extension (RBDE); 2) newly formed bone density (NFBD); 3) total callus area (TCA); 4) osteoclast number (ON) in the callus region; and 5) newly formed dental cementum-like tissue (NFC). Birefringence of root PDL reattachment was also evaluated. RESULTS Birefringence analysis showed root PDL reattachment for both groups 21 days after treatment. Intermittent hPTH 1-34 administration decreased RBDE (P <0.01) and increased NFBD (P <0.01), TCA (P <0.01), area of NFC (P <0.01), and ON in the callus region (P <0.01). CONCLUSION Within the limits of the present study, intermittent administration of hPTH 1-34 led to an enhanced periodontal healing process compared with non-treated animals.
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La patologia orale tabacco-correlata. DENTAL CADMOS 2013. [DOI: 10.1016/s0011-8524(13)70007-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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WITHDRAWN: La patologia orale tabacco-correlata. DENTAL CADMOS 2012. [DOI: 10.1016/j.cadmos.2012.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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