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Zhang H, Li L, Sun X, Hou B, Luo C. Research and development of microenvironment's influence on stem cells from the apical papilla - construction of novel research microdevices: tooth-on-a-chip. Biomed Microdevices 2024; 26:33. [PMID: 39023652 DOI: 10.1007/s10544-024-00715-0] [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] [Accepted: 06/29/2024] [Indexed: 07/20/2024]
Abstract
Stem cells are crucial in tissue engineering, and their microenvironment greatly influences their behavior. Among the various dental stem cell types, stem cells from the apical papilla (SCAPs) have shown great potential for regenerating the pulp-dentin complex. Microenvironmental cues that affect SCAPs include physical and biochemical factors. To research optimal pulp-dentin complex regeneration, researchers have developed several models of controlled biomimetic microenvironments, ranging from in vivo animal models to in vitro models, including two-dimensional cultures and three-dimensional devices. Among these models, the most powerful tool is a microfluidic microdevice, a tooth-on-a-chip with high spatial resolution of microstructures and precise microenvironment control. In this review, we start with the SCAP microenvironment in the regeneration of pulp-dentin complexes and discuss research models and studies related to the biological process.
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Affiliation(s)
- Hexuan Zhang
- Center for Microscope Enhanced Dentistry, School of Stomatology, Capital Medical University, Beijing, China
- Department of Endodontics and Operative Dentistry, School of Stomatology, Capital Medical University, Beijing, China
| | - Lingjun Li
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China
| | - Xiaoqiang Sun
- Department of Endodontics and Operative Dentistry, School of Stomatology, Capital Medical University, Beijing, China.
| | - Benxiang Hou
- Center for Microscope Enhanced Dentistry, School of Stomatology, Capital Medical University, Beijing, China.
| | - Chunxiong Luo
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China.
- The State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, School of Physics, Peking University, Beijing, China.
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Elnawam H, Abdallah A, Nouh S, Khalil NM, Elbackly R. Influence of extracellular matrix scaffolds on histological outcomes of regenerative endodontics in experimental animal models: a systematic review. BMC Oral Health 2024; 24:511. [PMID: 38689279 PMCID: PMC11061952 DOI: 10.1186/s12903-024-04266-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 04/16/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND Decellularized extracellular matrix (dECM) from several tissue sources has been proposed as a promising alternative to conventional scaffolds used in regenerative endodontic procedures (REPs). This systematic review aimed to evaluate the histological outcomes of studies utilizing dECM-derived scaffolds for REPs and to analyse the contributing factors that might influence the nature of regenerated tissues. METHODS The PRISMA 2020 guidelines were used. A search of articles published until April 2024 was conducted in Google Scholar, Scopus, PubMed and Web of Science databases. Additional records were manually searched in major endodontic journals. Original articles including histological results of dECM in REPs and in-vivo studies were included while reviews, in-vitro studies and clinical trials were excluded. The quality assessment of the included studies was analysed using the ARRIVE guidelines. Risk of Bias assessment was done using the (SYRCLE) risk of bias tool. RESULTS Out of the 387 studies obtained, 17 studies were included for analysis. In most studies, when used as scaffolds with or without exogenous cells, dECM showed the potential to enhance angiogenesis, dentinogenesis and to regenerate pulp-like and dentin-like tissues. However, the included studies showed heterogeneity of decellularization methods, animal models, scaffold source, form and delivery, as well as high risk of bias and average quality of evidence. DISCUSSION Decellularized ECM-derived scaffolds could offer a potential off-the-shelf scaffold for dentin-pulp regeneration in REPs. However, due to the methodological heterogeneity and the average quality of the studies included in this review, the overall effectiveness of decellularized ECM-derived scaffolds is still unclear. More standardized preclinical research is needed as well as well-constructed clinical trials to prove the efficacy of these scaffolds for clinical translation. OTHER The protocol was registered in PROSPERO database #CRD42023433026. This review was funded by the Science, Technology and Innovation Funding Authority (STDF) under grant number (44426).
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Affiliation(s)
- Hisham Elnawam
- Endodontics, Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Champollion Street, Azarita, Alexandria, Egypt.
- Tissue Engineering Laboratories, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
| | - Amr Abdallah
- Endodontics, Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Champollion Street, Azarita, Alexandria, Egypt
| | - Samir Nouh
- Tissue Engineering Laboratories, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
- Surgery Department, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Nesma Mohamed Khalil
- Oral Biology Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Rania Elbackly
- Endodontics, Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Champollion Street, Azarita, Alexandria, Egypt
- Tissue Engineering Laboratories, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
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Liao Y, Pan T, Xing X. Regenerative Endodontic Treatment in Dentinogenesis Imperfecta-Induced Apical Periodontitis. Case Rep Dent 2024; 2024:5128588. [PMID: 38223911 PMCID: PMC10787646 DOI: 10.1155/2024/5128588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/28/2023] [Accepted: 12/21/2023] [Indexed: 01/16/2024] Open
Abstract
Pulp involvement of immature permanent teeth with dentinogenesis imperfecta is challenging and could lead to extraction. A case of dentinogenesis imperfecta-induced periapical periodontitis of an immature permanent tooth was treated with regenerative endodontic treatment (RET), and root maturation was observed in 12-month follow-up. An 8-year-old girl presented acute pain and swelling in central mandibular region. Clinical and radiographic examination revealed "shell teeth" appearance of teeth 31, 41, and 42. Periapical lesion of tooth 31 was observed. Tooth 41 was previously treated with apexification. RET was planned and carried out for the necrotic tooth (tooth 31) with dentinogenesis imperfecta. The 1-, 3-, 7-, and 12-month postoperative recall revealed complete healing of periapical lesions. Root maturation characterized by elongation of root, thickening of dentinal walls, and closure of root apex was observed with radiographic examinations. We show that RET could be a desirable treatment for necrotic immature permanent teeth with dentinogenesis imperfecta and lead to resolution of endodontic lesions as well as maturation of dental root. The findings of this case suggest that RET should be considered by endodontist and pediatric dentist to treat teeth with similar dental anomalies and apical periodontitis.
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Affiliation(s)
- Ying Liao
- Department of Pediatric Dentistry, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
| | - Ting Pan
- Department of Pediatric Dentistry, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
| | - Xianghui Xing
- Department of Pediatric Dentistry, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
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Hu Z, Xiang Y, Wei Y, Gu X, Leng W, Xia L. Bacterial diversity in primary infected root canals of a Chinese cohort: analysis of 16 S rDNA sequencing. BMC Oral Health 2023; 23:932. [PMID: 38012618 PMCID: PMC10680180 DOI: 10.1186/s12903-023-03618-3] [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: 04/21/2023] [Accepted: 11/03/2023] [Indexed: 11/29/2023] Open
Abstract
PURPOSE To characterize the bacterial community in the primarily infected root canals. METHODS A total of 13 samples were collected from the primarily infected root canals. 16 S rDNA sequencing was performed to define bacterial community. Taxonomic annotation, bacterial hierarchical structures, community richness and diversity, and inter-subject variability of the bacterial community in the root canal samples were analyzed. Gender, age, and duration of the toothache-specific bacterial community associated with the patient groups were analyzed. RESULTS A total of 359 Species were annotated and identified in the whole study cohort. The Alpha diversity analysis showed that the species diversity and detection rate of the 13 samples were high, which reflected the authenticity of sequencing results. The Beta diversity analysis was used to compare the degree of difference between different root canal samples. The 13 samples were divided into two groups according to the results, group A was samples I1-I12, and group B was samples I13. The bacterial species of group A samples were analyzed with the clinical characteristics of patients, and it was found that gender, and duration specific differences in bacterial species, and there was no significant difference in species types among different ages of patients. CONCLUSION There were a wide diversity and inter-subject variability in the bacterial community in the primary infected root canals. While Porphyromonas gingivalis was the most abundant species, Fusobacterium nucleatum was the most variable species in the bacterial community of the root canal. The bacterial community at different taxonomic levels varied from sample to sample, despite consistent disease diagnoses. There was gender, duration-specific differences in the bacterial species in the primary infected root canals.
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Affiliation(s)
- Ziqiu Hu
- Department of Stomatology, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, China
- Institute of Oral Diseases, School of Dentistry, Hubei University of Medicine, Shiyan, 442000, China
| | - Yonggang Xiang
- Department of Ophthalmology, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, China
| | - Yanhong Wei
- Department of Stomatology, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, China
- Institute of Oral Diseases, School of Dentistry, Hubei University of Medicine, Shiyan, 442000, China
| | - Xinsheng Gu
- Department of Pharmacology, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Weidong Leng
- Department of Stomatology, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, China.
- Institute of Oral Diseases, School of Dentistry, Hubei University of Medicine, Shiyan, 442000, China.
| | - Lingyun Xia
- Department of Stomatology, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, China.
- Institute of Oral Diseases, School of Dentistry, Hubei University of Medicine, Shiyan, 442000, China.
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Aminoshariae A, Azarpazhooh A, Fouad AF, Glickman GN, He J, Kim SG, Kishen A, Letra AM, Levin L, Setzer FC, Tay FR, Hargreaves KM. Insights into the October 2022 Issue of the JOE. J Endod 2022; 48:1229-1231. [PMID: 36162875 DOI: 10.1016/j.joen.2022.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
| | - Amir Azarpazhooh
- Faculty of Dentistry University of Toronto, Toronto, Ontario, Canada
| | - Ashraf F Fouad
- University of Alabama at Birmingham, Birmingham, Alabama
| | | | - Jianing He
- Texas A&M College of Dentistry, College Station, Texas
| | - Sahng G Kim
- Columbia University College of Dental Medicine, New York, New York
| | - Anil Kishen
- Faculty of Dentistry University of Toronto, Toronto, Ontario, Canada
| | - Ariadne M Letra
- Department of Oral and Craniofacial Sciences, Center for Craniofacial and Dental Genetics, University of Pittsburgh, School of Dental Medicine, Pittsburgh, Pennsylvania
| | | | - Frank C Setzer
- University of Pennsylvania School of Dental Medicine, Philadelphia, Pennsylvania
| | - Franklin R Tay
- The Dental College of Georgia, Augusta University, Augusta, Georgia
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