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Lyu J, Chen H, Luo J, Lin S, Yang G, Zhou M, Tao J. Shape memory and hemostatic silk-laponite scaffold for alveolar bone regeneration after tooth extraction trauma. Int J Biol Macromol 2024; 260:129454. [PMID: 38237836 DOI: 10.1016/j.ijbiomac.2024.129454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 01/28/2024]
Abstract
Persistent bleeding and the absence of alveolar bone stress following tooth loss can hinder socket healing, complicating future dental implant procedures, and potentially leading to neighboring tooth instability. Therefore, developing materials that promote alveolar bone regeneration and possess both hemostatic and osteogenic properties is crucial for preserving the extraction sites. This study introduces a silk-based laponite composite scaffold material with proficient hemostatic and osteogenic functions, and excellent shape-memory properties for efficient extraction- site filling. In vitro studies research demonstrated that the scaffold's inherent negative charge of the scaffold significantly enhanced blood coagulation and thrombin generation. Moreover, its porous structure and slightly rough inner surface promoted blood cell adhesion and, improved the hemostatic performance. Furthermore, the scaffold facilitated stem cell osteogenic differentiation by activating the TRPM7 channel through the released of magnesium ions. In vivo tests using rat models confirmed its effectiveness in promoting coagulation and mandibular regeneration. Thus, this study proposes a promising approach for post-extraction alveolar bone regenerative repair. The composite scaffold material, with its hemostatic and osteogenic capabilities and shape-memory features, can potentially enhance dental implant success and overall oral health.
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Affiliation(s)
- Jiaxuan Lyu
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, No. 639 Zhizaoju Road, Shanghai 200011, China
| | - Hongyan Chen
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University; Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai 200011, China
| | - Jiaxin Luo
- Department of Dental Implantology, School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, No. 195 Dongfengwest Road, Guangzhou 510160, China
| | - Sihan Lin
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University; Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai 200011, China
| | - Guangzheng Yang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University; Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai 200011, China
| | - Mingliang Zhou
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University; Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai 200011, China.
| | - Jiang Tao
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, No. 639 Zhizaoju Road, Shanghai 200011, China.
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Al Shehhi YI, Elemam NM, Alsaegh MA. The response of salivary proinflammatory biomarkers to tooth extraction in individuals with type II diabetes mellitus. BMC Oral Health 2024; 24:250. [PMID: 38373910 PMCID: PMC10875873 DOI: 10.1186/s12903-024-04006-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 02/08/2024] [Indexed: 02/21/2024] Open
Abstract
PURPOSE This study investigated the levels of salivary proinflammatory cytokines in the saliva of patients living with type II diabetes mellitus (DM) compared to those in healthy individuals three times: before tooth extraction and at 2 hours and 2 days after tooth extraction. METHODS The study included 27 participants. Among them, 20 (n = 20; 74%) had type II DM, and seven (n = 7; 26%) were healthy control subjects. Saliva samples were collected at three time intervals: before tooth extraction and 2 hours and 2 days after tooth extraction. The salivary biomarkers were investigated using a Luminex multiplex assay. These salivary biomarkers included tumor necrosis factor-alpha (TNF-α), interleukin 6 (IL-6), interleukin 1-beta (IL-1β), and interferon-gamma (IFN-γ). RESULTS At baseline, patients with type II DM had significantly lower levels of IL-1β (P = 0.016). Moreover, 2 hours after extraction, patients with type II DM had significantly lower levels of IL-1β and TNF-α than did healthy control subjects (P = 0.046 and P = 0.020, respectively). In addition, 2 days after tooth extraction, the DM group had significantly greater IL-6 levels (P = 0.010) than the control group. CONCLUSIONS In patients with type II DM, salivary proinflammatory biomarker levels are generally comparable or lower than those in healthy control subjects. Proinflammatory cytokines manifest differently in patients with type II DM after tooth extraction than in normal healthy individuals. There is generally a delayed early response of salivary proinflammatory markers in patients living with type II DM who undergo tooth extraction.
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Affiliation(s)
- Yousuf Ibrahim Al Shehhi
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, UAE
| | - Noha M Elemam
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, UAE
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, UAE
| | - Mohammed Amjed Alsaegh
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, UAE.
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卢 婷, 郑 颖, 杨 海, 吴 补, 熊 君, 黄 呈, 潘 育, 黎 美, 何 菲, 熊 符. [Structural characteristics of the deciduous teeth of Tibetan miniature pigs]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2019; 39:1113-1117. [PMID: 31640964 PMCID: PMC8888271 DOI: 10.12122/j.issn.1673-4254.2019.09.18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To explore the histological structure of the deciduous teeth and the tooth germs of Tibetan miniature pigs for studies of dental tissue diseases and tooth regeneration. METHODS The structure of the deciduous teeth of Tibetan miniature pigs was observed by X-ray. The ultrastructure of the enamel and dentin of deciduous teeth was characterized by scanning electron microscopy. The jaws and teeth were three-dimensionally reconstructed using Mimics software based on Micro-CT scanning of the deciduous teeth. Image J software was used to calculate the gray value and the mineralization density of the deciduous teeth. Hisotological structure of the tooth germ and the pulp tissue of Tibetan miniature pigs was observed using HE staining. RESULTS The deciduous teeth of Tibetan miniature pigs were composed of enamel, dentin and medullary pulp tissue. The permanent tooth germ were formed during the deciduous dentition. The enamel and dentin ultrastructure of deciduous teeth were consistent with that of human deciduous teeth. The enamel and dentin mineralization densities were 2.47±0.09 g/cm3 and 1.72±0.07 g/cm3, respectively. The pathological structures of tooth germ and pulp tissue were similar to those of human teeth, and the pulp tissue of the deciduous teeth was in an undifferentiated state. CONCLUSIONS The deciduous teeth of Tibetan miniature pig have similar anatomy, ultrastructure and histopathological structure to human teeth and can serve as a good animal model for studying human dental tissue diseases and the mechanisms of tooth regeneration.
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Affiliation(s)
- 婷 卢
- 南方医科大学口腔医学院,南方医院国家重点专科牙体牙髓病科,广东 广州 510515School of Stomatology, Southern Medical University; Department of Endodontics, National Key Specialty of Endodontics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - 颖纯 郑
- 南方医科大学 基础医学院,广东 广州 510515School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China
| | - 海英 杨
- 南方医科大学 实验动物中心,广东 广州 510515Department of Laboratory Animal Center, Southern Medical University, Guangzhou 510515, China
| | - 补领 吴
- 南方医科大学口腔医学院,南方医院国家重点专科牙体牙髓病科,广东 广州 510515School of Stomatology, Southern Medical University; Department of Endodontics, National Key Specialty of Endodontics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - 君 熊
- 南方医科大学 南方医科大学珠江医院检验医学部,广东 广州 510280Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - 呈 黄
- 南方医科大学 基础医学院,广东 广州 510515School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China
| | - 育桦 潘
- 南方医科大学口腔医学院,南方医院国家重点专科牙体牙髓病科,广东 广州 510515School of Stomatology, Southern Medical University; Department of Endodontics, National Key Specialty of Endodontics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - 美怡 黎
- 南方医科大学 基础医学院,广东 广州 510515School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China
| | - 菲 何
- 南方医科大学 基础医学院,广东 广州 510515School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China
| | - 符 熊
- 南方医科大学 基础医学院,广东 广州 510515School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China
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Willett ES, Liu J, Berke M, Giannini PJ, Schmid M, Jia Z, Wang X, Wang X, Samson K, Yu F, Wang D, Nawshad A, Reinhardt RA. Standardized Rat Model Testing Effects of Inflammation and Grafting on Extraction Healing. J Periodontol 2017; 88:799-807. [PMID: 28440741 DOI: 10.1902/jop.2017.160771] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND Loss of alveolar ridge width and height after tooth extraction is well documented, but models to evaluate ridge preservation are neither standardized nor cost-effective. This rat model characterizes the pattern of bone turnover and inflammation after extraction and bone grafting with or without local simvastatin (SIM). METHODS Fifty retired-breeder rats underwent extraction of the maxillary right first molar and standard surgical defect creation under inhalation/local anesthesia. The left side of each animal served as unmanipulated control. Untreated groups (n = 8 to 9 per group) were compared (analysis of variance, t test) at days 0, 7, 14, and 28 for alveolar ridge height and width and for markers of inflammation and bone turnover by microcomputed tomography, histology, and enzyme-linked immunosorbent assay. Seventeen additional specimens had defects grafted with either bone mineralized matrix (BMM) or a BMM+SIM conjugate. RESULTS Extraction-induced bone loss (BL) was noted on buccal, palatal, and interproximal height (P <0.05) and ridge width (P <0.01). Week 1 inflammation positively correlated with ridge height; thereafter, a more intense inflammatory reaction corresponded to reduction in alveolar bone height and density (r = 0.74; P <0.05; Spearman). BMM+SIM preserved the most interproximal bone height (P <0.01), increased ridge width and bone density (P <0.01), enhanced 7-day prostaglandin E2 (P <0.01), and reduced 28-day inflammation density (P <0.05). CONCLUSIONS The standard defect used in the current study paralleled human postextraction alveolar BL. Defect grafting, especially BMM+SIM, reduced inflammation and preserved bone.
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Affiliation(s)
- Emily S Willett
- Department of Oral Biology, College of Dentistry, University of Nebraska Medical Center, Lincoln, NE
| | - Jingpeng Liu
- Department of Oral Biology, College of Dentistry, University of Nebraska Medical Center, Lincoln, NE
| | - Molly Berke
- Department of Oral Biology, College of Dentistry, University of Nebraska Medical Center, Lincoln, NE
| | - Peter J Giannini
- Department of Oral Biology, College of Dentistry, University of Nebraska Medical Center, Lincoln, NE
| | - Marian Schmid
- Department of Oral Biology, College of Dentistry, University of Nebraska Medical Center, Lincoln, NE
| | - Zhenshan Jia
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE
| | - Xiaobei Wang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE
| | - Xiaoyan Wang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE
| | - Kaeli Samson
- Department of Biostatistics, College of Public Health, University of Nebraska Medical Center, Omaha, NE
| | - Fang Yu
- Department of Biostatistics, College of Public Health, University of Nebraska Medical Center, Omaha, NE
| | - Dong Wang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE
| | - Ali Nawshad
- Department of Oral Biology, College of Dentistry, University of Nebraska Medical Center, Lincoln, NE
| | - Richard A Reinhardt
- Department of Surgical Specialties, College of Dentistry, University of Nebraska Medical Center
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Garlet GP. Environment and bone regeneration: how biomaterials, host mediators and even bacterial products can boost bone cells towards better clinical outcomes. J Appl Oral Sci 2015; 23:110-1. [PMID: 26018302 PMCID: PMC4428453 DOI: 10.1590/1678-77572015ed002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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