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Ren C, Chen W, Chen J, Mao C, Liao C, Liu J. The fusion of keratinized epithelium, an indication of early implant placement in the aesthetic area: an animal study. BMC Oral Health 2023; 23:1016. [PMID: 38115040 PMCID: PMC10729501 DOI: 10.1186/s12903-023-03755-9] [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: 10/20/2023] [Accepted: 12/10/2023] [Indexed: 12/21/2023] Open
Abstract
BACKGROUND In the period of the early implant placement, the socket is mainly occupied by provisional matrix (PM). Keratinized epithelium (KE) is critical for primary wound closure. Although both KE and PM are important, the detailed relationship among migrating KE, PM formation and indication of the early implant placement is still unclear. OBJECTIVE This research aimed to locate a healing stage of KE with highest osteogenic PM formation after tooth extraction, which could be treated as the optimal time point for early implant placement. MATERIAL AND METHODS Mice were sacrificed on days 1, 2, 3, 4 and 6 after incisor extraction. Clinical, histological, and immunohistochemical evaluations of the extraction sockets were performed, and statistical analyses were conducted. We then inserted implants into the PM with the greatest bioactivity and observed its osseointegration pattern for 3, 10, 17 and 30 days. RESULT When KE fusion was reached, sockets were dominated by PM with the greatest expression of osteocalcin (OC, P < 0.05) and high levels of CD34 and Runx2. OC and Runx2 expression were positively correlated with KE coverage (P < 0.05). When the implant was inserted at 4 days' healing, the PM maintained its osteogenic ability, and osseointegration proceeded perfectly. CONCLUSION The migration of KE was correlated with the formation of highly osteogenic and angiogenic PM. And the fusion of KE could be treated as an indication for early implant placement.
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Affiliation(s)
- Chengyan Ren
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Oral Diseases & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Weihui Chen
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, China.
| | - Jiangping Chen
- Department of Oral and Cranio-maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chuanqing Mao
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Oral Diseases & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Caiyu Liao
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Oral Diseases & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Jianan Liu
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Oral Diseases & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
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Bae JE, Hwang SM, Aryal YP, Kim TY, Sohn WJ, An SY, Kim JY, An CH, Lee Y, Kim YG, Park JW, Lee JM, Kim JY, Suh JY. Effects of erythropoietin on osteoblast in the tooth extraction socket in mice periodontitis model. Front Physiol 2022; 13:987625. [PMID: 36277197 PMCID: PMC9582603 DOI: 10.3389/fphys.2022.987625] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 09/20/2022] [Indexed: 11/23/2022] Open
Abstract
Periodontitis is an excessive inflammatory event in tooth-supporting tissues and can cause tooth loss. We used erythropoietin (EPO), which has been reported to play an important role in bone healing and modulation of angiogenesis, as a therapeutic agent in vivo and in vitro experimental models to analyze its effect on periodontitis. First, EPO was applied to in vitro MC3T3-E1 cells and human periodontal ligament fibroblast (hPDLF) cells to examine its function in altered cellular events and gene expression patterns. In vitro cultivation of MC3T3-E1 and hPDLF cells with 10 IU/ml EPO at 24 and 48 h showed an obvious increase in cell proliferation. Interestingly, EPO treatment altered the expression of osteogenesis-related molecules, including alkaline phosphatase (ALP), bone morphogenetic protein-2 (BMP-2), and osteocalcin (OC) in MC3T3-E1 cells but not in hPDLF cells. In particular, MC3T3-E1 cells showed increased expression of ALP, BMP-2, and OC on day 5, while hPDLF cells showed increased expression of BMP-2, and OC on day 14. Based on the in vitro examination, we evaluated the effect of EPO on bone formation using an experimentally-induced animal periodontitis model. After the induction of periodontitis in the maxillary left second M, 10 IU/ml of EPO was locally applied to the extraction tooth sockets. Histomorphological examination using Masson’s trichrome (MTC) staining showed facilitated bone formation in the EPO-treated groups after 14 days. Similarly, stronger positive reactions against vascular endothelial growth factor (VEGF), cluster of differentiation 31 (CD31), runt-related transcription factor 2 (RUNX2), and osteocalcin (OC) were detected in the EPO-treated group compared to the control. Meanwhile, myeloperoxidase, an inflammatory marker, was decreased in the EPO-treated group on days 1 and 5. Overall, EPO facilitates bone healing and regeneration through altered signaling regulation and modulation of inflammation in the osteoblast cell lineage and to a lesser extent in hPDLF cells.
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Affiliation(s)
- Ju-Eun Bae
- Department of Periodontology, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
| | - Sung-Min Hwang
- Department of Periodontology, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
| | - Yam Prasad Aryal
- Department of Biochemistry, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
| | - Tae-Young Kim
- Department of Biochemistry, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
| | - Wern-Joo Sohn
- Pre-Major of Cosmetics and Pharmaceutics, Daegu Haany University, Gyeongsan, South Korea
| | - Seo-Young An
- Department of Oral and Maxillofacial Radiology, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
| | - Ji-Youn Kim
- Department of Dental Hygiene, College of Health Science, Gachon University, Incheon, South Korea
| | - Chang-Hyeon An
- Department of Oral and Maxillofacial Radiology, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
| | - Youngkyun Lee
- Department of Biochemistry, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
| | - Yong-Gun Kim
- Department of Periodontology, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
| | - Jin-Woo Park
- Department of Periodontology, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
| | - Jae-Mok Lee
- Department of Periodontology, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
| | - Jae-Young Kim
- Department of Biochemistry, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
- *Correspondence: Jae-Young Kim, ; Jo-Young Suh,
| | - Jo-Young Suh
- Department of Periodontology, School of Dentistry, IHBR Kyungpook National University, Daegu, South Korea
- *Correspondence: Jae-Young Kim, ; Jo-Young Suh,
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Yan ZQ, Wang XK, Zhou Y, Wang ZG, Wang ZX, Jin L, Yin H, Xia K, Tan YJ, Feng SK, Xie PL, Tang SY, Fang CY, Cao J, Xie H. H-type blood vessels participate in alveolar bone remodeling during murine tooth extraction healing. Oral Dis 2020; 26:998-1009. [PMID: 32144839 DOI: 10.1111/odi.13321] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 02/20/2020] [Accepted: 02/27/2020] [Indexed: 12/11/2022]
Abstract
OBJECTIVES We aimed to investigate whether skeletal-specific H-type blood vessels exist in alveolar bone and how they function in alveolar bone remodeling. MATERIALS AND METHODS H-type vessels with high expression of CD31 and Endomucin (CD31hi Emcnhi ) were immunostained in alveolar bone. Abundance and age-related changes in CD31hi Emcnhi endothelial cells (H-ECs) were detected by flow cytometry. Osteoprogenitors association with H-type vessels and bone mass were detected in tooth extraction model of alveolar bone remodeling by immunohistofluorescence and micro-CT, respectively. Transcription and expression of H-EC feature genes during in vitro Notch inhibition were measured by RT-qPCR and immunocytofluorescence. RESULTS We verified that H-type vessels existed in alveolar bone, the abundance of which was highest at infancy age, then decreased but maintained a constant level during aging. In tooth extraction model, H-ECs significantly increased with concomitant perivascular accumulation of Runx2+ osteoprogenitors and gradually augmentation of bone mass. Notch inhibition of in vitro cultured H-ECs resulted in decreased expression levels of Emcn and hes1, but not Pecam1 or Kdr genes, with decreased expression levels of H-EC numbers, accordingly. CONCLUSIONS The present study suggests that H-type vessels promote osteogenesis during alveolar bone remodeling. Notch signaling pathway regulates expression of Emcn and possibly determines fate and functions of alveolar H-ECs.
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Affiliation(s)
- Zi-Qi Yan
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Department of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiao-Kai Wang
- Department of Emergency Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Yong Zhou
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zheng-Guang Wang
- Department of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhen-Xing Wang
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Ling Jin
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Hao Yin
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Kun Xia
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Yi-Juan Tan
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Shi-Kai Feng
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Ping-Li Xie
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China
| | - Si-Yuan Tang
- Xiangya Nursing School, Central South University, Changsha, China
| | - Chang-Yun Fang
- Department of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - Jia Cao
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Hui Xie
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Organ Injury, Aging and Regenerative Medicine, Changsha, China.,Hunan Key Laboratory of Bone Joint Degeneration and Injury, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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