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Yuan Z, Li J, Xiao F, Wu Y, Zhang Z, Shi J, Qian J, Wu X, Yan F. Sinensetin protects against periodontitis through binding to Bach1 enhancing its ubiquitination degradation and improving oxidative stress. Int J Oral Sci 2024; 16:38. [PMID: 38734708 PMCID: PMC11088688 DOI: 10.1038/s41368-024-00305-z] [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: 11/13/2023] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 05/13/2024] Open
Abstract
Periodontitis is a chronic inflammatory and immune reactive disease induced by the subgingival biofilm. The therapeutic effect for susceptible patients is often unsatisfactory due to excessive inflammatory response and oxidative stress. Sinensetin (Sin) is a nature polymethoxylated flavonoid with anti-inflammatory and antioxidant activities. Our study aimed to explore the beneficial effect of Sin on periodontitis and the specific molecular mechanisms. We found that Sin attenuated oxidative stress and inflammatory levels of periodontal ligament cells (PDLCs) under inflammatory conditions. Administered Sin to rats with ligation-induced periodontitis models exhibited a protective effect against periodontitis in vivo. By molecular docking, we identified Bach1 as a strong binding target of Sin, and this binding was further verified by cellular thermal displacement assay and immunofluorescence assays. Chromatin immunoprecipitation-quantitative polymerase chain reaction results also revealed that Sin obstructed the binding of Bach1 to the HMOX1 promoter, subsequently upregulating the expression of the key antioxidant factor HO-1. Further functional experiments with Bach1 knocked down and overexpressed verified Bach1 as a key target for Sin to exert its antioxidant effects. Additionally, we demonstrated that Sin prompted the reduction of Bach1 by potentiating the ubiquitination degradation of Bach1, thereby inducing HO-1 expression and inhibiting oxidative stress. Overall, Sin could be a promising drug candidate for the treatment of periodontitis by targeting binding to Bach1.
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Affiliation(s)
- Zhiyao Yuan
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Junjie Li
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Fuyu Xiao
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Yu Wu
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Zhiting Zhang
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Jiahong Shi
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Jun Qian
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Xudong Wu
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China.
| | - Fuhua Yan
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China.
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Wu S, Gao L, Fu J, Zhao C, Wang P. The Application of Virtual Simulation Technology in Scaling and Root Planing Teaching. Int Dent J 2024; 74:303-309. [PMID: 37973524 PMCID: PMC10988261 DOI: 10.1016/j.identj.2023.09.007] [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: 08/15/2023] [Revised: 09/22/2023] [Accepted: 09/28/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND Virtual simulation (VS) technology has been widely utilised in various aspects of oral education. This study aimed to evaluate the impact of VS technology in a scaling and root planing (SRP) teaching programme and explore an effective teaching approach. METHOD A total of 98 fourth-year undergraduates from Guanghua School of Stomatology at Sun Yat-sen University were enrolled in this study and randomly assigned to either the VS teaching group or the traditional teaching (TT) group. All participants received SRP training before undergoing an operational examination. Subsequently, questionnaires were administered to both students and teachers involved in the programme to assess the teaching effect and fidelity of the VS training system. Unpaired Student t test was used to analyse the final test scores and residual rates amongst students. RESULTS The overall residual rate of the calculus in the VS group was significantly lower than that in the TT group (48.81% ± 13.50% vs 56.89% ± 13.68%, P<.01). The difference was particularly notable in posterior teeth, proximal surfaces, and deep pockets. Additionally, the VS group students achieved higher final grades compared to the TT group (86.92 ± 6.10 vs 83.02 ± 6.05, P<0.01). In terms of teaching effectiveness assessment, the VS group students provided higher scores than the TT group, except in the areas of mastery of position, finger rests, and efficiency. CONCLUSIONS The implementation of VS technology demonstrated improvements in students' performance in SRP teaching. Therefore, a novel integrated pedagogic approaches method that combines VS technology with traditional teaching approaches could be further explored in future training programmes.
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Affiliation(s)
- Shiwen Wu
- Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Li Gao
- Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China; Department of Periodontology, Guanghua School and Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jiarun Fu
- Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Chuanjiang Zhao
- Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China; Department of Periodontology, Guanghua School and Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Panpan Wang
- Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China; Department of Periodontology, Guanghua School and Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
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Lin P, Niimi H, Hirota T, Ohsugi Y, Shimohira T, Toyoshima K, Katagiri S, Iwata T, Aoki A. Effects of low-level Er:YAG laser irradiation on proliferation and gene expression in primary gingival fibroblasts isolated from mouse maxilla. JOURNAL OF BIOPHOTONICS 2024; 17:e202300166. [PMID: 37975254 DOI: 10.1002/jbio.202300166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 10/06/2023] [Accepted: 10/24/2023] [Indexed: 11/19/2023]
Abstract
We investigated the effects of low-level Er:YAG laser irradiation on proliferation and alternations in early gene expression of gingival fibroblasts. Mice primary gingival fibroblasts were irradiated with an Er:YAG laser (1.8, 3.9, and 5.8 J/cm2 ). Irradiation at 3.9 J/cm2 promoted cell proliferation without significant changes in lactate dehydrogenase or Hspa1a expression. Three hours after irradiation at 3.9 J/cm2 , the Fn1 expression level was significantly increased. RNA-seq identified 15 differentially expressed genes between irradiated and non-irradiated cells, some of which belonged to immediate early genes (IEGs). Kyoto Encyclopedia of Genes and Genomes pathway analysis indicated MAPK pathway enhancement, and gene set enrichment analysis showed enrichment in the TGF-β signaling gene set. Enhanced proliferation via laser irradiation disappeared upon inhibition of Dusp4, Dusp5, and Tgfr1 expression. Low-level Er:YAG laser irradiation, especially at 3.9 J/cm2 without a major temperature elevation, enhanced fibroblast proliferation, via TGF-β and the MAPK signaling pathway following IEG expression.
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Affiliation(s)
- Peiya Lin
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Hiromi Niimi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Tomomitsu Hirota
- Division of Molecular Genetics, Research Center for Medical Science, The Jikei University School of Medicine, Tokyo, Japan
| | - Yujin Ohsugi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Tsuyoshi Shimohira
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Keita Toyoshima
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Sayaka Katagiri
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Takanori Iwata
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Akira Aoki
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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Fu J, Lao Z, Gao L, Wu S, Huang X, Zhao C, Wang P. Effectiveness of typodont, quail egg and virtual simulation for ultrasonic periodontal scaling teaching among pre-clinical students: a randomized trial. BMC Oral Health 2024; 24:86. [PMID: 38229105 DOI: 10.1186/s12903-023-03767-5] [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: 05/24/2023] [Accepted: 12/12/2023] [Indexed: 01/18/2024] Open
Abstract
BACKGROUND This study aimed to compare the efficacy of three different techniques, namely virtual simulation technology (VS), traditional pathological typodont (TT), and quail egg (QE), in pre-clinical training of periodontal ultrasonic scaling. It also aimed to propose an integrated teaching approach for ultrasonic scaling teaching. METHODS This single-blind randomized multi-arm trial enrolled 108 fourth-year students from Guanghua School of Stomatology at Sun Yat-sen University. The participants were randomly, evenly assigned to VS, TT, or QE group. First, the participants received theoretical review on ultrasonic scaling and demonstrative teaching. Then in the 90-minute operation training by group, students used traditional typodont equipped in head-simulators, raw quail eggs, or scaling module of the UniDental VS system respectively. Then all participants practiced on pathological models for 30 min. In the final operation examination, participants were instructed to remove the supra- and sub-gingival calculi pre-set on designated teeth by ultrasonic scalers within 30 min. Their performances were evaluated by residual calculus rate and a multi-perspective scoring scale. After the examination, questionnaires were provided to assess the teaching effects of each method and the fidelity of VS. Statistical analysis was carried out using one-way, two-way ANOVA, and multiple t-test. RESULTS Students in VS group had significant higher total test scores than QE group (87.89 ± 6.81, 83.53 ± 8.14) and TT group (85.03 ± 6.81). VS group scored higher in several dimensional comparisons with the other two groups, especially in difficult situations. QE group had higher scores particularly in force application and supra-gingival scaling. TT group scored the highest in pivot stability practice and body position training. Students gave higher scores when assessing the fidelity of VS than experienced teachers. CONCLUSION The study highlights the importance of specialized pre-clinical training on ultrasonic scaling for dental students. The methods adopted in current study (VS, TT and QE) each offered unique advantages in education, which can be combined to create an integrative teaching procedure. This procedure aims to provide an effective, advisable and normative pre-clinical training procedure for ultrasonic scaling. By utilizing the strengths of each method, dental educators can deliver high-quality training and ensure that students are well-prepared for clinical practice.
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Affiliation(s)
- Jiarun Fu
- Hospital of Stomatology, Sun Yat-Sen University, No.55 Linyuan Xi Road, Guangzhou, Guangdong, 510055, China
| | - Zhentao Lao
- Hospital of Stomatology, Sun Yat-Sen University, No.55 Linyuan Xi Road, Guangzhou, Guangdong, 510055, China
| | - Li Gao
- Hospital of Stomatology, Sun Yat-Sen University, No.55 Linyuan Xi Road, Guangzhou, Guangdong, 510055, China
- Department of Periodontology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
| | - Shiwen Wu
- Hospital of Stomatology, Sun Yat-Sen University, No.55 Linyuan Xi Road, Guangzhou, Guangdong, 510055, China
| | - Xin Huang
- Hospital of Stomatology, Sun Yat-Sen University, No.55 Linyuan Xi Road, Guangzhou, Guangdong, 510055, China
- Department of Periodontology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China
| | - Chuanjiang Zhao
- Hospital of Stomatology, Sun Yat-Sen University, No.55 Linyuan Xi Road, Guangzhou, Guangdong, 510055, China.
- Department of Periodontology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China.
| | - Panpan Wang
- Hospital of Stomatology, Sun Yat-Sen University, No.55 Linyuan Xi Road, Guangzhou, Guangdong, 510055, China.
- Department of Periodontology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China.
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Yan M, Liang W, Du L, Guo R, Cao Y, Ni S, Zhong Y, Zhang K, Qu K, Qin X, Chen L, Wu W. Metronidazole-loaded polydopamine nanomedicine with antioxidant and antibacterial bioactivity for periodontitis. Nanomedicine (Lond) 2023; 18:2143-2157. [PMID: 38127626 DOI: 10.2217/nnm-2023-0245] [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] [Indexed: 12/23/2023] Open
Abstract
Aim: This study focused on treating periodontitis with bacterial infection and local over accumulation of reactive oxygen species. Materials & methods: Polydopamine nanoparticles (PDA NPs) were exploited as efficient carriers for encapsulated metronidazole (MNZ). The therapeutic efficacy and biocompatibility of PDA@MNZ NPs were investigated through both in vitro and in vivo studies. Results: The nanodrug PDA@MNZ NPs were successfully fabricated, with well-defined physicochemical characteristics. In vitro, the PDA@MNZ NPs effectively eliminated intracellular reactive oxygen species and inhibited the growth of Porphyromonas gingivalis. Moreover, the PDA@MNZ NPs exhibited synergistic therapy for periodontitisin in vivo. Conclusion: PDA@MNZ NPs were confirmed with exceptional antimicrobial and antioxidant functions, offering a promising avenue for synergistic therapy in periodontitis.
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Affiliation(s)
- Meng Yan
- Key Laboratory for Biorheological Science & Technology of Ministry of Education, State & Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, China
| | - Wen Liang
- Stomatological Hospital of Chongqing Medical University, Chongqing, 401147, China
| | - Lan Du
- Stomatological Hospital of Chongqing Medical University, Chongqing, 401147, China
| | - Rongjuan Guo
- Stomatological Hospital of Chongqing Medical University, Chongqing, 401147, China
| | - Yu Cao
- Key Laboratory for Biorheological Science & Technology of Ministry of Education, State & Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, China
| | - Sheng Ni
- Key Laboratory for Biorheological Science & Technology of Ministry of Education, State & Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, China
| | - Yuan Zhong
- Key Laboratory for Biorheological Science & Technology of Ministry of Education, State & Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, China
| | - Kun Zhang
- Key Laboratory for Biorheological Science & Technology of Ministry of Education, State & Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, China
- Chongqing University Three Gorges Hospital, Chongqing Municipality Clinical Research Center for Geriatric Diseases, Chongqing, 404000, China
| | - Kai Qu
- Key Laboratory for Biorheological Science & Technology of Ministry of Education, State & Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, China
- Chongqing University Three Gorges Hospital, Chongqing Municipality Clinical Research Center for Geriatric Diseases, Chongqing, 404000, China
| | - Xian Qin
- Key Laboratory for Biorheological Science & Technology of Ministry of Education, State & Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, China
- Chongqing University Three Gorges Hospital, Chongqing Municipality Clinical Research Center for Geriatric Diseases, Chongqing, 404000, China
| | - Liang Chen
- Stomatological Hospital of Chongqing Medical University, Chongqing, 401147, China
| | - Wei Wu
- Key Laboratory for Biorheological Science & Technology of Ministry of Education, State & Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, China
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Liang Y, Gao W, Deng S, Wu D, Jiang Y, Zhang Y, Qiu R. Graphene quantum dots promote migration and differentiation of periodontal ligament stem cells. Front Chem 2023; 11:1213507. [PMID: 38025053 PMCID: PMC10679356 DOI: 10.3389/fchem.2023.1213507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 11/01/2023] [Indexed: 12/01/2023] Open
Abstract
Graphene and its derivatives have attracted much attention as nanomaterials in bone tissue engineering because of their remarkable ability to induce cell osteogenic differentiation. However, graphene quantum dots (GQDs), as graphene derivatives, little is known about their osteodifferentiation- and osteoinduction-promoting capabilities, especially in the restoration of bone defect caused by periodontitis. Therefore, there is a growing need to investigate the effect of GQDs on periodontal ligament stem cells (PDLSCs). Here, we postulated that GQDs are a promising biocompatible nanomaterial that facilitated the migration and differentiation of PDLSCs, and use laboratory methods like CCK-8, transwell experiments, qRT-PCR, Alizarin red staining and immunofluorescence staining to evaluate. Our experiments confirmed that GQDs did not inhibit cell viability, with most cells remaining viable even at GQDs concentrations of up to 30 μg mL-1. Moreover, GQDs were found to significantly enhance PDLSC migration, with the peak effect observed at concentrations of 5 and 10 μg mL-1. Furthermore, GQDs accelerated osteoblastic differentiation in PDLSCs and induced the mineralization of calcium nodules. Additionally, GQDs were shown to promote fibroblast differentiation in PDLSCs compared to the control group. Thus, GQDs not only possessed low cytotoxicity and good biocompatibility, but also displayed the beneficial capability to migration and differentiation of PDLSCs, which indicated GQDs might be a potential nanomaterial for bone regeneration.
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Affiliation(s)
| | | | | | | | | | | | - Rongmin Qiu
- Guangxi Key Laboratory of Oral and Maxillofacial Surgery Disease Treatment, Guangxi Health Commission Key Laboratory of Prevention and Treatment for Oral Infectious Diseases, Guangxi Key Laboratory of Oral and Maxillofacial Rehabilitation and Reconstruction, Guangxi Clinical Research Center for Craniofacial Deformity, College of Stomatology, Hospital of Stomatology, Guangxi Medical University, Nanning, China
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Soldati KR, Jiang Y, Brandt BW, Exterkate RAM, Buijs MJ, Nazmi K, Kaman WE, Cheng L, Bikker FJ, Crielaard W, Zandim-Barcelos DL, Deng DM. Differential Modulation of Saliva-Derived Microcosm Biofilms by Antimicrobial Peptide LL-31 and D-LL-31. Pathogens 2023; 12:1295. [PMID: 38003760 PMCID: PMC10675243 DOI: 10.3390/pathogens12111295] [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: 09/27/2023] [Revised: 10/24/2023] [Accepted: 10/27/2023] [Indexed: 11/26/2023] Open
Abstract
Microbiome modulation, aiming to restore a health-compatible microbiota, is a novel strategy to treat periodontitis. This study evaluated the modulation effects of antimicrobial peptide LL-31 and its D-enantiomer (D-LL-31) on saliva-derived microcosm biofilms, spiked with or without Porphyromonas gingivalis. To this end, one-day-old biofilms were incubated for 24 h with biofilm medium alone, or medium containing 40 µM LL-31 or D-LL-31, after which biofilms were grown for 5 days. Biofilms were assessed at 1 day and 5 days after intervention for the total viable cell counts, dipeptidyl peptidase IV (DPP4) activity, P. gingivalis amount (by qPCR) and microbial composition (by sequencing). The results showed that D-LL-31, not LL-31, significantly reduced the total viable cell counts, the P. gingivalis amount, and the DPP4 activity of the biofilms spiked with P. gingivalis, but only at 1 day after intervention. In the biofilms spiked with P. gingivalis, D-LL-31 tended to reduce the α-diversity and the compositional shift of the biofilms in time as compared to the control and LL-31 groups. In conclusion, D-LL-31 showed a better performance than LL-31 in biofilm modulation. The biofilm modulation function of the peptides could be impaired when the biofilms were in a severely dysbiotic state.
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Affiliation(s)
- Kahena R. Soldati
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The Netherlands; (K.R.S.); (Y.J.); (B.W.B.); (R.A.M.E.); (M.J.B.); (W.C.)
- Department of Oral Diagnosis and Surgery, School of Dentistry at Araraquara, Universidade Estadual Paulista—UNESP, Araraquara 1680, SP, Brazil;
| | - Yaling Jiang
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The Netherlands; (K.R.S.); (Y.J.); (B.W.B.); (R.A.M.E.); (M.J.B.); (W.C.)
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;
| | - Bernd W. Brandt
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The Netherlands; (K.R.S.); (Y.J.); (B.W.B.); (R.A.M.E.); (M.J.B.); (W.C.)
| | - Rob A. M. Exterkate
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The Netherlands; (K.R.S.); (Y.J.); (B.W.B.); (R.A.M.E.); (M.J.B.); (W.C.)
| | - Mark J. Buijs
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The Netherlands; (K.R.S.); (Y.J.); (B.W.B.); (R.A.M.E.); (M.J.B.); (W.C.)
| | - Kamran Nazmi
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The Netherlands; (K.N.); (W.E.K.); (F.J.B.)
| | - Wendy E. Kaman
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The Netherlands; (K.N.); (W.E.K.); (F.J.B.)
| | - Lei Cheng
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;
| | - Floris J. Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The Netherlands; (K.N.); (W.E.K.); (F.J.B.)
| | - Wim Crielaard
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The Netherlands; (K.R.S.); (Y.J.); (B.W.B.); (R.A.M.E.); (M.J.B.); (W.C.)
| | - Daniela L. Zandim-Barcelos
- Department of Oral Diagnosis and Surgery, School of Dentistry at Araraquara, Universidade Estadual Paulista—UNESP, Araraquara 1680, SP, Brazil;
| | - Dong Mei Deng
- Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The Netherlands; (K.R.S.); (Y.J.); (B.W.B.); (R.A.M.E.); (M.J.B.); (W.C.)
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8
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Recent Clinical Treatment and Basic Research on the Alveolar Bone. Biomedicines 2023; 11:biomedicines11030843. [PMID: 36979821 PMCID: PMC10044990 DOI: 10.3390/biomedicines11030843] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/07/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
The periodontal ligament is located between the bone (alveolar bone) and the cementum of the tooth, and it is connected by tough fibers called Sharpey’s fibers. To maintain healthy teeth, the foundation supporting the teeth must be healthy. Periodontal diseases, also known as tooth loss, cause the alveolar bone to dissolve. The alveolar bone, similar to the bones in other body parts, is repeatedly resorbed by osteoclasts and renewed by osteogenic cells. This means that an old bone is constantly being resorbed and replaced by a new bone. In periodontal diseases, the alveolar bone around the teeth is absorbed, and as the disease progresses, the alveolar bone shrinks gradually. In most cases, the resorbed alveolar bone does not return to its original form even after periodontal disease is cured. Gum covers the tooth surface so that it matches the shape of the resorbed alveolar bone, exposing more of the tooth surface than before, making the teeth look longer, leaving gaps between the teeth, and in some cases causing teeth to sting. Previously, the only treatment for periodontal diseases was to stop the disease from progressing further before the teeth fell out, and restoration to the original condition was almost impossible. However, a treatment method that can help in the regeneration of the supporting tissues of the teeth destroyed by periodontal diseases and the restoration of the teeth to their original healthy state as much as possible is introduced. Recently, with improvements in implant material properties, implant therapy has become an indispensable treatment method in dentistry and an important prosthetic option. Treatment methods and techniques, which are mainly based on experience, have gradually accumulated scientific evidence, and the number of indications for treatment has increased. The development of bone augmentation methods has contributed remarkably to the expansion of indications, and this has been made possible by various advances in materials science. The induced pluripotent stem cell (iPS) cell technology for regenerating periodontal tissues, including alveolar bone, is expected to be applied in the treatment of diseases, such as tooth loss and periodontitis. This review focuses on the alveolar bone and describes clinical practice, techniques, and the latest basic research.
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Liu Y, Zhao Y, Zhu W, Han M, Mi F, Wang B. Comprehensive reparative effects of bacteriostatic poly(L-lactide-co-glycolide)/poly(L-lactide-co-ε-caprolactone) electrospinning membrane on alveolar bone defects in progressive periodontitis. J Biomed Mater Res B Appl Biomater 2023; 111:513-525. [PMID: 36196879 DOI: 10.1002/jbm.b.35168] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 09/06/2022] [Accepted: 09/14/2022] [Indexed: 01/21/2023]
Abstract
Periodontitis is a chronic inflammatory disease that leads to the loss of alveolar bone, among several studies focusing on reconstructing periodontal bone caused by periodontitis, guided bone regeneration (GBR) is a promising approach. In this study a serial clinically applied antibiotics loaded poly(L-lactide-co-glycolide)/poly(L-lactide-co-ε-caprolactone) (PLGA/PLCA) fibrous mesh to prevent and reconstruct defective bone in periodontitis were prepared by electrospinning. Incorporation of antibiotics promoted the hydrophilicity but decreased the crystallinity of PLGA/PLCA membranes. Antibiotics could be sustained released from membranes. Metronidazole, minocycline, and doxycycline incorporated membranes could suppress Porphyromonas gingivalis (P. gingivalis) within 21 days in vitro. Metronidazole and minocycline incorporated membranes decreased 41% and 55.5% colony counts in rat gingival crevicular fluid in vivo. Minocycline-loaded membrane could support the proliferation of MC3T3-E1 cells and maintained 79% viability of human ligament fibroblasts cultured on it. And MC3T3-E1 cells could undergo osteoblastic differentiation when cultured with pure PLGA/PLCA membrane and minocycline incorporated membrane. Then in vivo repairable effects of those antibiotics loaded membranes were evaluated in alveolar bone defected P. gingivalis infected model. The application of minocycline loaded membranes, effectively prevented the bone resorption of periodontitis caused by P. gingivalis. After been treated with minocycline incorporated membrane, volume of defected bone of maintained at about 50% level of control rats. 8 weeks post-operation, newly regenerated bone was observed in the operative alveolar bone of the pure PLGA/PLCA membrane, metronidazole and minocycline incorporated PLGA/PLCA membrane treated groups. Minocycline/PLGA/PLCA electrospinning membrane is a promising GBR material that can be applied to guide regeneration of periodontitis-induced alveolar bone damage.
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Affiliation(s)
- Yiming Liu
- Department of Stomatology, North Sichuan Medical College & Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Yun Zhao
- Department of Stomatology, North Sichuan Medical College & Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Wanchun Zhu
- Department of Stomatology, North Sichuan Medical College & Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Mei Han
- Department of Stomatology, North Sichuan Medical College & Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Fanglin Mi
- Department of Stomatology, North Sichuan Medical College & Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Bing Wang
- Department of Chemistry, School of Pharmacy, North Sichuan Medical College, Nanchong, China
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10
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Chen B, Li S, Chang Y, Zhang J, Liu J, Dong Y, Yan F. Macrophages contribute to periodontal wound healing mainly in the tissue proliferation stage. J Periodontal Res 2023; 58:122-130. [PMID: 36398469 DOI: 10.1111/jre.13074] [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: 06/08/2022] [Revised: 11/01/2022] [Accepted: 11/07/2022] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The aim of this study was to determine the preliminary role of macrophages in different stages of periodontal healing. BACKGROUND Macrophages are promising target cells for periodontal regeneration. However, the stage at which they play a more important role during periodontal repair has not been elucidated till date. METHODS First, the dynamic changes in M1 and M2 macrophages were analyzed in a rat periodontal-defect model at Days 1, 3, 5, 7, 14, 21, and 28 post-surgery. Macrophages were then depleted after 1, 6, and 14 days of surgery, and the healing results were evaluated via micro-computed tomography and histopathological detection. Finally, the effects of M1 and M2 macrophages on the proliferation and osteogenic differentiation of mesenchymal stem cells (MSCs) were verified in vitro. RESULTS During natural periodontal healing, the number of M1 macrophages increased the most during the early stage of healing (3 days post-operation), and subsequently, it decreased rapidly. The number of M2 macrophages was at its peak during the middle and late stages of tissue healing (5-21 days post-surgery). Interestingly, the highest number of M2 macrophages was observed at 5-14 days post-operation in the alveolar bone, while it was observed at 21 days post-operation in the cementum area. On the first and 14th day post-operation, the clearance of macrophages had no significant effect on tissue healing; however, on the sixth day post-operation, macrophage depletion significantly inhibited tissue regeneration (p < .05). In vitro studies showed that M2 macrophages, rather than M1 macrophages, could significantly promote the proliferation of MSCs (p < .01). CONCLUSION It is better to intervene in tissue proliferation phase when a M2 macrophage regulation-based periodontal regenerative therapy is planned in the future.
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Affiliation(s)
- Bin Chen
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Central laboratory of Stomatology, Nangjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Songying Li
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Central laboratory of Stomatology, Nangjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yaqin Chang
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Suzhou Stomatological Hospital, Suzhou, China
| | - Jiading Zhang
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Suzhou Stomatological Hospital, Suzhou, China
| | - Jiaying Liu
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Central laboratory of Stomatology, Nangjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yingchun Dong
- Central laboratory of Stomatology, Nangjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Department of Oral Anesthesiology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Fuhua Yan
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Central laboratory of Stomatology, Nangjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
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11
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Nanomaterials in Scaffolds for Periodontal Tissue Engineering: Frontiers and Prospects. Bioengineering (Basel) 2022; 9:bioengineering9090431. [PMID: 36134977 PMCID: PMC9495816 DOI: 10.3390/bioengineering9090431] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/15/2022] [Accepted: 08/30/2022] [Indexed: 11/19/2022] Open
Abstract
The regeneration of periodontium represents important challenges to controlling infection and achieving functional regeneration. It has been recognized that tissue engineering plays a vital role in the treatment of periodontal defects, profiting from scaffolds that create the right microenvironment and deliver signaling molecules. Attributable to the excellent physicochemical and antibacterial properties, nanomaterials show great potential in stimulating tissue regeneration in tissue engineering. This article reviewed the up-to-date development of nanomaterials in scaffolds for periodontal tissue engineering. The paper also represented the merits and defects of different materials, among which the biocompatibility, antibacterial properties, and regeneration ability were discussed in detail. To optimize the project of choosing materials and furthermore lay the foundation for constructing a series of periodontal tissue engineering scaffolds, various nanomaterials and their applications in periodontal regeneration were introduced.
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12
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Xu L, Qin X, Mozaffari MS, Yan D, Sun X, Cao Y. Hybrid system with stable structure of hard/soft tissue substitutes induces re-osseointegration in a rat model of biofilm-mediated peri-implantitis. J Biomed Mater Res B Appl Biomater 2022; 110:2452-2463. [PMID: 35620882 DOI: 10.1002/jbm.b.35102] [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: 12/03/2021] [Revised: 03/19/2022] [Accepted: 05/09/2022] [Indexed: 11/07/2022]
Abstract
Re-osseointegration of an infected/contaminated dental implant poses major clinical challenges. We tested the hypothesis that the application of an antibiotic-releasing construct, combined with hard/soft tissue replacement, increases the efficacy of reconstructive therapy. We initially fabricated semi-flexible hybrid constructs of β-TCP/PHBHHx, with tetracycline (TC) (TC amounts: 5%, 10%, and 15%). Thereafter, using in vitro assays, TC release profile, attachment to rat bone marrow-derived stem cells (rBMSCs) and their viability as well as anti-bacterial activity were determined. Thereafter, regenerative efficacies of the three hybrid constructs were assessed in a rat model of peri-implantitis induced by Aggregatibacter actinomycetemcomitans biofilm; control animals received β-TCP/Bio-Gide and TC injection. Eight weeks later, maxillae were obtained for radiological, histological, and histomorphometric analyses of peri-implant tissues. Sulcus bleeding index was chronologically recorded. Serum cytokines levels of IL-6 and IL-1β were also evaluated by enzyme-linked immunosorbent assay. Substantial amounts of tetracycline, from hybrid constructs, were released for 2 weeks. The medium containing the released tetracycline did not affect the adhesion or viability of rBMSCs; however, it inhibited the proliferation of A. actinomycetemcomitans. Osteogenesis and osseointegration were more marked for the 15% hybrid construct group than the other two groups. The height of attachment and infiltration of inflammatory cells within fibrous tissue was significantly reduced in the experimental groups than the control group. Our protocol resulted in re-osseointegration on a biofilm-contaminated implant. Thus, an antibiotic releasing inorganic/organic construct may offer a therapeutic option to suppress infection and promote guided tissue regeneration thereby serving as an integrated multi-layer substitute for both hard/soft tissues.
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Affiliation(s)
- Lianyi Xu
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xu Qin
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mahmood S Mozaffari
- Department of Oral Biology, Dental College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Di Yan
- Department of Oral and Maxillofacial Surgery, General Hospital, Ningxia Medical University, Yinchuan, China
| | - Xiaojuan Sun
- Department of Oral and Maxillofacial Surgery, General Hospital, Ningxia Medical University, Yinchuan, China
| | - Yingguang Cao
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Huazhong University of Science and Technology, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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13
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Metabolomics Research in Periodontal Disease by Mass Spectrometry. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27092864. [PMID: 35566216 PMCID: PMC9104832 DOI: 10.3390/molecules27092864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/24/2022] [Accepted: 04/27/2022] [Indexed: 11/20/2022]
Abstract
Periodontology is a newer field relative to other areas of dentistry. Remarkable progress has been made in recent years in periodontology in terms of both research and clinical applications, with researchers worldwide now focusing on periodontology. With recent advances in mass spectrometry technology, metabolomics research is now widely conducted in various research fields. Metabolomics, which is also termed metabolomic analysis, is a technology that enables the comprehensive analysis of small-molecule metabolites in living organisms. With the development of metabolite analysis, methods using gas chromatography–mass spectrometry, liquid chromatography–mass spectrometry, capillary electrophoresis–mass spectrometry, etc. have progressed, making it possible to analyze a wider range of metabolites and to detect metabolites at lower concentrations. Metabolomics is widely used for research in the food, plant, microbial, and medical fields. This paper provides an introduction to metabolomic analysis and a review of the increasing applications of metabolomic analysis in periodontal disease research using mass spectrometry technology.
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14
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Moreno Rodríguez JA, Ortiz Ruiz AJ. Periodontal granulation tissue preservation in surgical periodontal disease treatment: a pilot prospective cohort study. J Periodontal Implant Sci 2022; 52:298-311. [PMID: 36047583 PMCID: PMC9436644 DOI: 10.5051/jpis.2105780289] [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: 11/05/2021] [Revised: 01/21/2022] [Accepted: 02/09/2022] [Indexed: 11/08/2022] Open
Abstract
Purpose Methods Results Conclusions
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15
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Huang Q, Huang X, Gu L. Periodontal Bifunctional Biomaterials: Progress and Perspectives. MATERIALS 2021; 14:ma14247588. [PMID: 34947197 PMCID: PMC8709483 DOI: 10.3390/ma14247588] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/28/2021] [Accepted: 12/02/2021] [Indexed: 12/25/2022]
Abstract
Periodontitis is a chronic infectious disease that destroys periodontal supportive tissues and eventually causes tooth loss. It is attributed to microbial and immune factors. The goal of periodontal therapy is to achieve complete alveolar bone regeneration while keeping inflammation well-controlled. To reach this goal, many single or composite biomaterials that produce antibacterial and osteogenic effects on periodontal tissues have been developed, which are called bifunctional biomaterials. In this review, we summarize recent progress in periodontal bifunctional biomaterials including bioactive agents, guided tissue regeneration/guided bone regeneration (GTR/GBR) membranes, tissue engineering scaffolds and drug delivery systems and provide novel perspectives. In conclusion, composite biomaterials have been greatly developed and they should be chosen with care due to the risk of selection bias and the lack of evaluation of the validity of the included studies.
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Affiliation(s)
- Qiuxia Huang
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China;
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou 510055, China
| | - Xin Huang
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou 510055, China
- Department of Periodontology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
- Correspondence: (X.H.); (L.G.)
| | - Lisha Gu
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China;
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou 510055, China
- Correspondence: (X.H.); (L.G.)
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16
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Apical approach in periodontal reconstructive surgery with enamel matrix derivate and enamel matrix derivate plus bone substitutes: a randomized, controlled clinical trial. Clin Oral Investig 2021; 26:2793-2805. [PMID: 34791548 PMCID: PMC8898230 DOI: 10.1007/s00784-021-04256-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 10/23/2021] [Indexed: 11/17/2022]
Abstract
Objectives This parallel, randomized controlled clinical trial evaluated the influence of bone substitutes (BS) on the efficacy of the non-incised papillae surgical approach (NIPSA) with enamel matrix derivate (EMD) in resolving deep, isolated, combined non-contained intrabony and supra-alveolar periodontal defects, preserving the soft tissue. Material and methods Twenty-four patients were randomized to treatment with NIPSA and EMD or NIPSA plus EMD and BS. Bleeding on probing (BoP), interproximal clinical attachment level (CAL), interproximal probing depth (PD), recession (REC), location of the tip of the papilla (TP), and width of the keratinized tissue (KT) were evaluated before surgery and at 1 year post-surgery (primary outcomes). Wound closure was assessed at 1 week post‐surgery, and supra‐alveolar attachment gain (SUPRA-AG) was recorded at 1 year post‐surgery. Results At 1 week, 87.5% of cases registered complete wound closure and there were no cases of necrosis, without differences between groups (p > .05). At 1 year, all cases showed negative BoP. A significant PD reduction (NIPSA + EMD 8.25 ± 2.70 mm vs. NIPSA + EMD + BS 6.83 ± 0.81 mm) and CAL gain (NIPSA + EMD 8.33 ± 2.74 mm vs. NIPSA + EMD + BS 7.08 ± 2.68 mm) were observed (p < .001) in both groups, without significant between-group differences (p > .05). The residual PD was < 5 mm in all defects (NIPSA + EMD 2.50 ± 0.67 mm vs. NIPSA + EMD + BS 2.67 ± 0.78 mm). Soft tissues were preserved without significant between-group differences (REC: NIPSA + EMD 0.25 ± 0.45 mm vs. NIPSA + EMD + BS 0.17 ± 0.58 mm, p > .05; KT: 0.00 ± 0.43 mm vs. 0.08 ± 0.67 mm, p > .05). There were improvements in the papilla in both groups (TP: NIPSA + EMD 0.33 ± 0.49 mm vs. NIPSA + EMD + BS 0.45 ± 0.52 mm, p > .05), which was only significant in the NIPSA EMD + BS group (0.45 ± 0.52 mm; p < .05). In both groups, CAL gain was recorded in the supra-alveolar component, showing full resolution of the intrabony component of the defect in all cases (SUPRA-AG: NIPSA + EMD 1.83 ± 1.11 mm vs. NIPSA + EMD + BS 2.00 ± 1.76 mm, p > .05). Conclusions NIPSA and EMD with or without BS seem to be a valid surgical approach in the treatment of isolated, deep non-contained periodontal defects. In our study, both treatments resulted in significant PD reduction and CAL gain, that extended in the supra-alveolar component, without differences with the use of BS. Both treatments resulted in soft tissue preservation. However, the addition of BS may improve interdental papillary tissue. Clinical relevance
NIPSA, with or without bone substitutes, resulted in significant periodontal improvement, with soft tissue preservation in isolated, deep non-contained periodontal defects. The application of bone substitutes may provide interproximal soft tissue gain. Clinical trial registration Clinicaltrials.gov: NCT04712630. Supplementary Information The online version contains supplementary material available at 10.1007/s00784-021-04256-1.
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Kargarpour Z, Nasirzade J, Panahipour L, Miron RJ, Gruber R. Liquid PRF Reduces the Inflammatory Response and Osteoclastogenesis in Murine Macrophages. Front Immunol 2021; 12:636427. [PMID: 33897689 PMCID: PMC8062717 DOI: 10.3389/fimmu.2021.636427] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 03/08/2021] [Indexed: 12/25/2022] Open
Abstract
Macrophage activation and osteoclastogenesis are hallmarks of inflammatory osteolysis and may be targeted by the local application of liquid platelet-rich fibrin (PRF). Liquid PRF is produced by a hard spin of blood in the absence of clot activators and anticoagulants, thereby generating an upper platelet-poor plasma (PPP) layer, a cell-rich buffy coat layer (BC; termed concentrated-PRF or C-PRF), and the remaining red clot (RC) layer. Heating PPP has been shown to generate an albumin gel (Alb-gel) that when mixed back with C-PRF generates Alb-PRF having extended working properties when implanted in vivo. Evidence has demonstrated that traditional solid PRF holds a potent anti-inflammatory capacity and reduces osteoclastogenesis. Whether liquid PRF is capable of also suppressing an inflammatory response and the formation of osteoclasts remains open. In the present study, RAW 264.7 and primary macrophages were exposed to lipopolysaccharides (LPS), lactoferrin, and agonists of Toll-like receptors (TLR3 and TLR7) in the presence or absence of lysates prepared by freeze-thawing of liquid PPP, BC, Alb-gel, and RC. For osteoclastogenesis, primary macrophages were exposed to receptor activator of nuclear factor kappa B ligand (RANKL), macrophage colony-stimulating factor (M-CSF), and human transforming growth factor-β1 (TGF-β1) in the presence or absence of PPP, BC, Alb-gel, RC lysates and hemoglobin. We show here that it is mainly the lysates prepared from PPP and BC that consistently reduced the agonist-induced expression of interleukin 6 (IL6) and cyclooxygenase-2 (COX2) in macrophages, as determined by RT-PCR and immunoassay. With respect to osteoclastogenesis, lysates from PPP and BC but also from RC, similar to hemoglobin, reduced the expression of osteoclast marker genes tartrate-resistant acid phosphatase (TRAP) and cathepsin K, as well as TRAP histochemical staining. These findings suggest that liquid PRF holds a potent in vitro heat-sensitive anti-inflammatory activity in macrophages that goes along with an inhibition of osteoclastogenesis.
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Affiliation(s)
- Zahra Kargarpour
- Department of Oral Biology, Medical University of Vienna, Vienna, Austria
| | - Jila Nasirzade
- Department of Oral Biology, Medical University of Vienna, Vienna, Austria
| | - Layla Panahipour
- Department of Oral Biology, Medical University of Vienna, Vienna, Austria
| | - Richard J Miron
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Reinhard Gruber
- Department of Oral Biology, Medical University of Vienna, Vienna, Austria.,Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
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18
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Jiang Y, Feng J, Du J, Fu J, Liu Y, Guo L, Liu Y. Clinical and biochemical effect of laser as an adjunct to non-surgical treatment of chronic periodontitis. Oral Dis 2021; 28:1042-1057. [PMID: 33715262 PMCID: PMC9292540 DOI: 10.1111/odi.13847] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/17/2021] [Accepted: 02/25/2021] [Indexed: 12/17/2022]
Abstract
Objectives To evaluate the clinical and biochemical efficacy of laser therapy as an adjunct to non‐surgical treatment in chronic periodontitis. Methods A systematic search was performed through the PubMed, EMBASE, and Cochrane Library for eligible articles published as of May 2, 2020, supplemented by information search in the System for Information on Programme Literature in Europe and a manual literature search. Only randomized controlled trials (RCTs) used to compare the adjunctive use of laser and non‐surgical treatment alone with an observation period of at least 6 months were included. Results Sixteen RCTs with a total of 525 subjects were included. Meta‐analysis suggested that the additional use of laser to scaling and root planing (SRP) showed significant superiority over SRP alone among most of clinical parameters involved. Regarding the GCF, although volume in the laser group was lower at week 4 and 12, no significant difference was found regarding the cytokines level. Subgroup analysis revealed that the combined therapy produced no significant difference in PD, CAL and PI at most time points for studies in respect to smokers. No treatment‐related adverse events had been reported in the included studies. Conclusions Pooled analysis suggested that laser‐assisted non‐surgical treatment improved clinical outcome to SRP alone in the management of non‐smoking chronic periodontitis patients.
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Affiliation(s)
- Yiyang Jiang
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Jie Feng
- Department of General Dentistry, School of Stomatology Wangfujing Division, Capital Medical University, Beijing, China
| | - Juan Du
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Jingfei Fu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Yitong Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Lijia Guo
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
| | - Yi Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
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Silveira GRC, de Lima DC, Cintra LTÂ, Brigagão MRPL, Ervolino E, Fernandes LA. Influence of Doxycycline and InGaAlP Diode Laser at 660 nm Wavelength in the Treatment of Periodontitis Induced in Rats: In Vivo Study. Photochem Photobiol 2021; 97:1104-1115. [PMID: 33713346 DOI: 10.1111/php.13414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/05/2021] [Accepted: 03/06/2021] [Indexed: 11/28/2022]
Abstract
This study evaluated the influence of Doxycycline (DOX) and Low-Intensity Laser (LIL) (InGaAlP diode laser) as scaling and root planing (SRP) adjuvants in the treatment of periodontitis induced in rats. The rats received periodontal disease induction, and after 7 days, the ligature was removed, and the animals were divided into groups/treatments: NT-receive no treatment; SRP-submitted only to SRP; DOX-submitted to SRP and DOX irrigation; LIL-submitted to SRP and LIL irradiation; and DOX + LIL-submitted to SRP treatments, DOX irrigation and LIL irradiation. The animals were sacrificed at 7, 15 and 30 days, and then, the analyses were performed. A lower concentration of Alpha-glycoprotein acid and Complement 3 was observed in the DOX + LIL group compared to all the other groups in all the periods, and for Complement 4 at 15 and 30 days (P < 0.01). A lower bone loss (BL) was observed in the DOX + LIL group compared to all the other groups in all the periods (P < 0.01). It can be concluded that LIL was effective in the reduction of proteins, and its association with DOX was effective in the reduction of proteins and BL, in the treatment of periodontal induction in rats.
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Affiliation(s)
| | - Daniela Coelho de Lima
- Faculty of Dentistry, Federal University of Alfenas (UNIFAL-MG), Alfenas, Minas Gerais, Brazil
| | - Luciano Tavares Ângelo Cintra
- Faculty of Dentistry, Department of Restorative Dentistry, São Paulo State University (UNESP), Araçatuba, São Paulo, Brazil
| | | | - Edílson Ervolino
- Faculty of Dentistry, Department of Basic Sciences, São Paulo State University (UNESP), Araçatuba, São Paulo, Brazil
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Porter GC, Safii SH, Medlicott NJ, Duncan WJ, Tompkins GR, Coates DE. Formulation of a Semisolid Emulsion Containing Leptospermum scoparium Essential Oil and Evaluation of In Vitro Antimicrobial and Antibiofilm Efficacy. PLANTA MEDICA 2021; 87:253-266. [PMID: 33434939 DOI: 10.1055/a-1330-8765] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Manuka oil, an essential oil derived from the Leptospermum scoparium, has been traditionally used for wound care and as a topical antibacterial, antifungal, and anti-inflammatory. However, the essential oil is not well retained at mucosal sites, such as the oral cavity, where the benefits of the aforementioned properties could be utilized toward the treatment of persistent biofilms. Within this study, L. scoparium essential oil was incorporated into a semisolid emulsion for improved delivery. The safety profile of L. scoparium essential oil on human gingival fibroblasts was determined via cell viability, cytotoxicity, and caspase activation. The minimal bactericidal concentration of L. scoparium essential oil was determined, and the emulsion's antibiofilm effects visualized using confocal laser scanning microscopy. L. scoparium essential oil demonstrated a lower IC50 (0.02% at 48 h) when compared to the clinical control chlorhexidine (0.002% at 48 h) and displayed lower cumulative cytotoxicity. Higher concentrations of L. scoparium essential oil (≥ 0.1%) at 6 h resulted in higher caspase 3/7 activation, suggesting an apoptotic pathway of cell death. A minimal bactericidal concentration of 0.1% w/w was observed for 6 oral bacteria and 0.01% w/v for Porphyromonas gingivalis. Textural and rheometric analysis indicated increased stability of emulsion with a 1 : 3 ratio of L. scoparium essential oil: Oryza sativa carrier oil. The optimized 5% w/w L. scoparium essential oil emulsion showed increased bactericidal penetrative effects on Streptococci gordonii biofilms compared to oil alone and to chlorhexidine controls. This study has demonstrated the safety, formulation, and antimicrobial activity of L. scoparium essential oil emulsion for potential antibacterial applications at mucosal sites.
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Affiliation(s)
- Gemma C Porter
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - Syarida H Safii
- Department of Restorative Dentistry, University of Malaya, Kuala Lumpur
| | | | - Warwick J Duncan
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - Geoffrey R Tompkins
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - Dawn E Coates
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
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21
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Silveira GRC, de Lima DC, Cintra LTÂ, Brigagão MRPL, Ervolino E, Fernandes LA. Systemic and local effects of doxycycline and low-intensity laser treatment on periodontitis in rats. J Periodontal Implant Sci 2021; 52:39-53. [PMID: 35187872 PMCID: PMC8860759 DOI: 10.5051/jpis.2100420021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 07/12/2021] [Accepted: 07/15/2021] [Indexed: 11/29/2022] Open
Abstract
Purpose This study evaluated the systemic and local effects of doxycycline (DOX) and low-intensity laser (LIL) treatment as adjuvants to scaling and root planing (SRP) in the treatment of experimental periodontitis in rats. Methods The sample consisted of 180 male rats (Rattus norvegicus albinus, Wistar), of which 30 did not receive induction of periodontal disease (negative control [NC] group) and 150 received induction of periodontal disease in the lower first molar. After 7 days, the ligature was removed, and the animals were divided into the following groups: NT (no treatment), SRP (SRP), DOX (SRP and DOX irrigation), LIL (SRP and laser irradiation), and DOX+LIL (SRP, DOX, and LIL). The animals were euthanized at 7, 15, and 30 days; thereafter, biochemical, radiographic, histological, and immunohistochemical analyses were performed. Results In the intragroup analysis, lower concentrations of α-1-glycoprotein acid (α-1-Ga) and complement 3 (C3) were observed in the DOX+LIL group than in all other groups at all time points, as well as lower levels of complement 4 (C4) at 15 and 30 days (P<0.001). Less bone loss was observed in the DOX, LIL, and DOX+LIL groups than in the NC and SRP groups at all time points (P<0.001). There was a smaller number of tartrate-resistant acid phosphatase (TRAP)-positive cells in the DOX+LIL group than in the other groups at all time points (P<0.001). Positive correlations were observed between the systemic levels of α-1-Ga, C3, and C4 and the number of TRAP-positive cells. Conclusions The combination of DOX with LIL as SRP adjuvants was effective both systemically and locally for the treatment of experimental periodontitis in rats.
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Affiliation(s)
| | | | | | | | - Edilson Ervolino
- Department of Basic Sciences, São Paulo State University (UNESP) Faculty of Dentistry, Araçatuba, Brazil
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22
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Hromcik F, Vokurka J, Kyr M, Izakovicova Holla L. Granulation Tissue Enhanced with Aspirin and Omega‐3 PUFAs as a Local Adjunct to the Surgical Treatment of Periodontitis. EUR J LIPID SCI TECH 2020. [DOI: 10.1002/ejlt.202000259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Filip Hromcik
- Clinic of Dentistry St. Anne's Faculty Hospital Pekarska 53 Brno 65691 Czech Republic
- Faculty of Medicine Masaryk University Kamenice 5 Brno 62500 Czech Republic
| | - Jan Vokurka
- Clinic of Dentistry St. Anne's Faculty Hospital Pekarska 53 Brno 65691 Czech Republic
- Faculty of Medicine Masaryk University Kamenice 5 Brno 62500 Czech Republic
| | - Michal Kyr
- Faculty of Medicine Masaryk University Kamenice 5 Brno 62500 Czech Republic
- Department of Pediatric Oncology University Hospital Brno Cernopolni 9 Brno 61300 Czech Republic
| | - Lydie Izakovicova Holla
- Clinic of Dentistry St. Anne's Faculty Hospital Pekarska 53 Brno 65691 Czech Republic
- Faculty of Medicine Masaryk University Kamenice 5 Brno 62500 Czech Republic
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23
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Xu Y, Zhao S, Weng Z, Zhang W, Wan X, Cui T, Ye J, Liao L, Wang X. Jelly-Inspired Injectable Guided Tissue Regeneration Strategy with Shape Auto-Matched and Dual-Light-Defined Antibacterial/Osteogenic Pattern Switch Properties. ACS APPLIED MATERIALS & INTERFACES 2020; 12:54497-54506. [PMID: 33226209 DOI: 10.1021/acsami.0c18070] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Periodontitis is a bacterial infectious disease leading to the loss of periodontal supporting tissues and teeth. The current guided tissue regeneration (GTR) membranes for periodontitis treatments cannot effectively promote tissue regeneration for the limited antibacterial properties and the excessively fast degradation rate. Besides, they need extra tailoring according to variform defects before implantation, leading to imprecise match. This study proposed an injectable sodium alginate hydrogel composite (CTP-SA) doped with cubic cuprous oxide (Cu2O) and polydopamine-coated titanium dioxide (TiO2@PDA) nanoparticles for GTR. Inspired by the gelation process of the jelly, the phase change (liquid to solid) of CTP-SA after injection could automatch variform bone defects. Meanwhile, CTP-SA exhibited broad-spectrum antibacterial capabilities under blue light (BL) irradiation, including Streptococcus mutans (one of the most abundant bacteria in oral biofilms). Moreover, the reactive oxygen species released under BL excitation could accelerate the oxidation of Cu+ to Cu2+. Afterward, osteogenesis could be enhanced through two factors simultaneously: the stimulation of newly formed Cu2+ and the photothermal effect of CTP-SA under near-infrared (NIR) irradiation. Collectively, through this dual-light (blue and NIR) noninvasive regulation, CTP-SA could switch antibacterial and osteogenic modes to address requirements of patients at different healing stages, thereby realizing the customized GTR procedures.
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Affiliation(s)
- Yingying Xu
- Affiliated Stomatological Hospital, Nanchang University, Nanchang, Jiangxi 330006, P. R. China
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, Jiangxi 330088, P. R. China
- Key Laboratory of Oral Biomedicine, Nanchang, Jiangxi 330006, P. R. China
| | - Siyu Zhao
- Affiliated Stomatological Hospital, Nanchang University, Nanchang, Jiangxi 330006, P. R. China
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, Jiangxi 330088, P. R. China
- Key Laboratory of Oral Biomedicine, Nanchang, Jiangxi 330006, P. R. China
| | - Zhenzhen Weng
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330088, P. R. China
| | - Wei Zhang
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330088, P. R. China
| | - Xinyi Wan
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, Jiangxi 330088, P. R. China
| | - Tongcan Cui
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, Jiangxi 330088, P. R. China
| | - Jing Ye
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, Jiangxi 330088, P. R. China
| | - Lan Liao
- Affiliated Stomatological Hospital, Nanchang University, Nanchang, Jiangxi 330006, P. R. China
- Key Laboratory of Oral Biomedicine, Nanchang, Jiangxi 330006, P. R. China
| | - Xiaolei Wang
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, Jiangxi 330088, P. R. China
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330088, P. R. China
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24
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Hasegawa Y, Takayama T, Iwano Y. Clinical classification of tooth position in the alveolar bone housing with periodontal defects. J Dent Sci 2020; 16:795-798. [PMID: 33854740 PMCID: PMC8025220 DOI: 10.1016/j.jds.2020.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 11/23/2020] [Indexed: 12/03/2022] Open
Abstract
A new classification of tooth position in the alveolar bone housing, which indicates the width of alveolar bone for buccolingual direction, with bone defects caused by periodontal disease is proposed. This classification highlights the importance of tooth position in the alveolar bone housing in terms of the progression of the regenerative process and the factors that may affect the prognosis of compromised teeth after regenerative surgery. Tooth positions were divided into two groups: (i) The whole tooth is centrally positioned in the existing alveolar bone housing (Grade I) and (ii) A part of the tooth is exposed out of the existing alveolar bone housing (Grade II). Grade II is further divided into two subgroups according to situations encountered in clinical practice. The following subclasses are suggested: Subgroup A, where the alveolar bone housing is broader than the tooth, and Subgroup B, where the alveolar bone housing is narrower than the tooth. These subgroups represent a discrepancy between tooth size and alveolar bone dimensions in the buccolingual orientation. This classification could be useful for planning the correct regenerative treatment for each type of the tooth position in the alveolar bone housing with periodontal defects.
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Affiliation(s)
| | - Tadahiro Takayama
- Department of Periodontology, Nihon University School of Dentistry, Tokyo, Japan.,Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
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25
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Bitencourt FV, Bender CV, Fiorini T, Gomes SC, Visioli F, Angst PDM. Periodontal condition and treatment in a patient with rare systemic condition: A case report for acid sphingomyelinase deficiency. SPECIAL CARE IN DENTISTRY 2020; 41:103-110. [PMID: 33179797 DOI: 10.1111/scd.12540] [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: 06/09/2020] [Revised: 10/15/2020] [Accepted: 10/16/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Acid sphingomyelinase deficiency (ASMD) is a rare group of autosomal recessive disorders. This report provides the first detailed description of the periodontal condition and treatment response in a patient with chronic visceral ASMD. CASE DESCRIPTION A 49-year-old white woman with ASMD showed elevated visible plaque index (VPI), gingival bleeding index (GBI), and bleeding on probing (BOP) at 100% of sites. Periodontal pocket depths (PPD) were mostly shallow to moderate (at 96% of sites), whereas the loss of clinical attachment (CAL) was moderate to severe (54% and 46% of sites, respectively, at 4-6 mm and ≥7 mm categories). Periapical radiographs revealed the presence of furcation involvement and intra-bony defects. The periodontal diagnosis was periodontitis stage IV, generalized, grade C. Ninety days after the end of the supra and subgingival control (e.g., cause-related therapy), marked reduction was observed for all periodontal indicators: VPI (-83%), GBI (-79%), BOP (-85%), elimination of sites PPD ≥7 mm, 27% increase in sites PPD 1-3 mm (from 64% to 91%), and gain of clinical attachment (gain of 11% CAL 1-3 mm and 25% CAL 4-6 mm; and a reduction of 36% CAL ≥7 mm). PRACTICAL IMPLICATIONS Despite the severity of the initial periodontal condition, the patient with chronic visceral ASMD responded well to the non-surgical periodontal treatment.
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Affiliation(s)
- Fernando Valentim Bitencourt
- Department of Conservative Dentistry - Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Cláubia Viegas Bender
- Department of Conservative Dentistry - Oral Pathology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Tiago Fiorini
- Department of Conservative Dentistry - Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Sabrina Carvalho Gomes
- Department of Conservative Dentistry - Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Fernanda Visioli
- Department of Conservative Dentistry - Oral Pathology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Patricia Daniela Melchiors Angst
- Department of Conservative Dentistry - Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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26
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Furtsev TV, Kazanovskay AA, Zeer GM. [Assessment of the efficiency of root canals sealing depending on the type of root dentin treatment (experimental study)]. STOMATOLOGII︠A︡ 2020; 98:24-27. [PMID: 31957418 DOI: 10.17116/stomat20199806224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Research objective was a comparative assessment of quality of sealing of root canals, subjected to a standard method of processing, processing by the laser and processing by LAI equipment, with sealer and the gutta-percha. The study included 20 teeth extracted because of chronic periodontitis and divided into four groups. Root canals were processed according to the traditional protocol using as an irrigant 3% NaOCl and 17% EDTA solution, LAI equipment, the Er laser; Cr; YSGG 2780 nm at a power 1W and 1,5W and sealed up using single protocol by means of an epoxy siler of AH+ and gutta-percha by continuous wave by means of the CalamusDual (DentsplayMaillefer) device. Scanning electronic microscopy was used to study the efficiency of sealing depending on a type of processing. The highest sealing of the obturation material to the canal walls was revealed in teeth processed by the laser at a power of 1.5 W confirmed by lack of emptiness between a material and a dentine. Conventional irrigation protocol did not result in an optimal obturation with the extent of empty spaces up to 13 microns. The results of the pilot research are the basis for more extensive studies.
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Affiliation(s)
- T V Furtsev
- Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences - Scientific Research Institute of Medical Problems of the North, Krasnoyarsk, Russia.,Dental Clinic MediDent, Krasnoyarsk, Russia
| | | | - G M Zeer
- Siberian Federal University, Krasnoyarsk, Russia
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27
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Lizambard M, Menu T, Fossart M, Bassand C, Agossa K, Huck O, Neut C, Siepmann F. In-situ forming implants for the treatment of periodontal diseases: Simultaneous controlled release of an antiseptic and an anti-inflammatory drug. Int J Pharm 2019; 572:118833. [PMID: 31715363 DOI: 10.1016/j.ijpharm.2019.118833] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 10/23/2019] [Accepted: 10/28/2019] [Indexed: 01/16/2023]
Abstract
Different types of in-situ forming implants based on poly(lactic-co-glycolic acid) (PLGA) for the controlled dual release of an antiseptic drug (chlorhexidine) and an anti-inflammatory drug (ibuprofen) were prepared and thoroughly characterized in vitro. N-methyl-pyrrolidone (NMP) was used as water-miscible solvent, acetyltributyl citrate (ATBC) as plasticizer and hydroxypropyl methylcellulose (HPMC) was added to enhance the implants' stickiness/bioadhesion upon formation within the periodontal pocket. Different drug forms exhibiting substantially different solubilities were used: chlorhexidine dihydrochloride and digluconate as well as ibuprofen free acid and lysinate. The initial drug loadings were varied from 1.5 to 16.1%. In vitro drug release, dynamic changes in the pH of the surrounding bulk fluid and in the systems' wet mass as well as polymer degradation were monitored. Importantly, the release of both drugs, chlorhexidine and ibuprofen, could effectively be controlled simultaneously during several weeks. Interestingly, the tremendous differences in the drug forms' solubilities (e.g., factor >5000) did not translate into major differences in the resulting release kinetics. In the case of ibuprofen, this can likely (at least in part) be attributed to significant drug-polymer interactions (ibuprofen acts as a plasticizer for PLGA). In the case of chlorhexidine, the release of the much less soluble dihydrochloride was even faster compared to the more soluble digluconate (when combined with ibuprofen free acid). In the case of ibuprofen, at higher initial drug loadings also limited solubility effects within the implants seem to play a role, in contrast to chlorhexidine. In the latter case, instead, increased system porosity effects likely dominate at higher drug loadings.
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Affiliation(s)
- M Lizambard
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - T Menu
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - M Fossart
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - C Bassand
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - K Agossa
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - O Huck
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie-dentaire, 8 rue Sainte-Elisabeth, 67000 Strasbourg, France
| | - C Neut
- Univ. Lille, Inserm, CHU Lille, U995-LIRIC, F-59000 Lille, France
| | - F Siepmann
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France.
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