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Amaral MF, Casatti CA, Naqvi AR, Debortoli CVL, Atili Brandini D. Histological changes in pulp-dentin complex in tooth subjected to traumatic occlusion and subluxation. Saudi Dent J 2024; 36:321-327. [PMID: 38420008 PMCID: PMC10897626 DOI: 10.1016/j.sdentj.2023.11.012] [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: 06/28/2023] [Revised: 11/07/2023] [Accepted: 11/13/2023] [Indexed: 03/02/2024] Open
Abstract
Background This study evaluated the influence of traumatic occlusion in the dentin-pulp complex a molar teeth submitted to subluxation. Material and methods Ninety Wistar rats were divided into groups Naïve (N), Subluxation (S) and Subluxation with traumatic occlusion (STO) and submitted to histological analysis after 7 and 21 days. A quantitative analysis was submitted to one-way ANOVA and Tukey's post-hoc test, and Chi-square and Bonferronís post-hoc test. Results S and STO showed a significant increase in blood vessels area (p < 0.0005), amorphous fundamental substance (p < 0.0005) and reactionary dentin formation (p < 0.0005), as well as a decrease in the nuclear profile (p < 0.0005), odontoblast layer (p = 0.013 and p < 0.0005) by day 7 when compared with N. These changes normalized by day 21, except for the reactionary dentin (p < 0.0005) in both S and STO groups. Interestingly, the STO group exhibited significant changes in the increase of pulp calcification (p < 0.0005), presence of tubules with nuclei (p < 0.0005), and inflammatory infiltrate (p < 0.0005), as well reduction of nuclear profile (p < 0.0005), odontoblast layer (p < 0.0005) compared with N and S at day 21. Conclusions STO impaired the defence response and decreased pulp regeneration capacity by increasing the inflammatory infiltrate and pulp calcification, and decreasing the nucleated cell number in the odontoblast layer and central pulp.
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Affiliation(s)
- Marina Fuzette Amaral
- Department of Diagnosis and Surgery, São Paulo State University (UNESP), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Cláudio Aparecido Casatti
- Department of Physiology and Morphology, São Paulo State University (UNESP), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Afsar Raza Naqvi
- Mucosal Immunology Lab, The University of Illinois at Chicago, College of Dentistry, Dept. of Periodontics, Chicago, IL, United States
| | | | - Daniela Atili Brandini
- Department of Diagnosis and Surgery, São Paulo State University (UNESP), School of Dentistry, Araçatuba, São Paulo, Brazil
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EzEldeen M, Pedano De Piero MNS, Xu L, Driesen RB, Wyatt J, Van Gorp G, Meschi N, Van Meerbeek B, Lambrichts I, Jacobs R. Multimodal Imaging of Dental Pulp Healing Patterns following Tooth Autotransplantation And Regenerative Endodontic Treatment. J Endod 2023:S0099-2399(23)00324-2. [PMID: 37315781 DOI: 10.1016/j.joen.2023.06.003] [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: 03/21/2023] [Revised: 05/30/2023] [Accepted: 06/05/2023] [Indexed: 06/16/2023]
Abstract
INTRODUCTION Understanding the healing process of dental pulp after tooth autotransplantation (TAT) and regenerative endodontic treatment (RET) of immature teeth is important both clinically and scientifically. This study aimed to characterize the pattern of dental pulp healing in human teeth that underwent TAT and RET using state-of-the-art imaging techniques. MATERIALS AND METHODS This study examined four human teeth, two premolars that underwent TAT and two central incisors that received RET. The premolars were extracted after one year (case 1) and two years (case 2) due to ankylosis, while the central incisors were extracted after three years (cases 3 and 4) for orthodontic reasons. Nanofocus x-ray computed tomography was used to image the samples before being processed for histological and immunohistochemical analysis. Laser scanning confocal second harmonic generation imaging (SHG) was used to examine the patterns of collagen deposition. A maturity-matched premolar was included as a negative control for the histological and SHG analysis. RESULTS Analysis of the four cases revealed different patterns of dental pulp healing. Similarities were observed in the progressive obliteration of the root canal space. However, a striking loss of typical pulpal architecture was observed in the TAT cases, while a pulp-like tissue was observed in one of the RET cases. Odontoblast-like cells were observed in cases 1 and 3. CONCLUSION This study provided insights into the patterns of dental pulp healing after TAT and RET. The SHG imaging sheds light on the patterns of collagen deposition during reparative dentin formation.
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Affiliation(s)
- Mostafa EzEldeen
- OMFS IMPATH Research Group, Faculty of Medicine, Department of Imaging and Pathology, KU Leuven and Oral and Maxillofacial Surgery, University Hospitals Leuven, Kapucijnenvoer 33, 3000 Leuven, Belgium; KU Leuven (University of Leuven), Department of Oral Health Sciences, KU Leuven and Paediatric Dentistry and Special Dental Care, University Hospitals Leuven, Kapucijnenvoer 33, 3000 Leuven, Belgium.
| | - Mariano N Simon Pedano De Piero
- KU Leuven (University of Leuven), Department of Oral Health Sciences, Endodontology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Lianyi Xu
- OMFS IMPATH Research Group, Faculty of Medicine, Department of Imaging and Pathology, KU Leuven and Oral and Maxillofacial Surgery, University Hospitals Leuven, Kapucijnenvoer 33, 3000 Leuven, Belgium; Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Ronald B Driesen
- Biomedical Research Institute, Hasselt University, Campus Diepenbeek, Agoralaan Building C, B-3590 Diepenbeek, Belgium
| | - Jan Wyatt
- KU Leuven (University of Leuven), Department of Oral Health Sciences, KU Leuven and Paediatric Dentistry and Special Dental Care, University Hospitals Leuven, Kapucijnenvoer 33, 3000 Leuven, Belgium
| | - Gertrude Van Gorp
- KU Leuven (University of Leuven), Department of Oral Health Sciences, KU Leuven and Paediatric Dentistry and Special Dental Care, University Hospitals Leuven, Kapucijnenvoer 33, 3000 Leuven, Belgium
| | - Nastaran Meschi
- Section of Endodontology, Department of Oral Health Sciences, Ghent University, C. Heymanslaan 10/P8, 9000 Ghent, Belgium
| | - Bart Van Meerbeek
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT - Biomaterials Research group & UZ Leuven, University Hospitals Leuven, Dentistry, Kapucijnenvoer 33, 3000 Leuven, Belgium
| | - Ivo Lambrichts
- Biomedical Research Institute, Hasselt University, Campus Diepenbeek, Agoralaan Building C, B-3590 Diepenbeek, Belgium
| | - Reinhilde Jacobs
- OMFS IMPATH Research Group, Faculty of Medicine, Department of Imaging and Pathology, KU Leuven and Oral and Maxillofacial Surgery, University Hospitals Leuven, Kapucijnenvoer 33, 3000 Leuven, Belgium; Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden
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Queiroz AF, Hidalgo MM, Consolaro A, Panzarini SR, França AB, Melo ME, Poi WR. Effect of systemic antibiotic therapy on pulp repair following extrusive luxation and avulsion in a murine model: A histomorphological study. Dent Traumatol 2022; 38:397-409. [PMID: 35662418 DOI: 10.1111/edt.12771] [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: 12/17/2021] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND/AIM The evidence for any benefit of systemic antibiotic therapy on pulp survival following extrusive luxation and avulsion is inconclusive. The aim of this study was to evaluate the effect of systemic antibiotic therapy with amoxycillin and tetracycline for 7 days on different aspects of dental pulp repair in a murine model. MATERIAL AND METHODS The right maxillary incisor of 180 4 to 8-week-old male Wistar rats underwent extrusive luxation or avulsion. The animals were then treated with saline solution (control), tetracycline, or amoxicillin administered intra-gastrically for 7 days, and euthanized at 7, 15, and 30 days post-operatively. The layer of odontoblast cells, reparative dentin deposition, Hertwig's epithelial root sheath, pulp necrosis, and periapical inflammatory infiltrate were histomorphologically analyzed and scored. Mann-Whitney, Kruskal-Wallis, and Dunn tests were used to compare mean scores for the different procedures, treatments, and times (p ≤ .05). RESULTS Significant differences were observed between luxated and avulsed teeth (p < .05). In luxated teeth, no differences were observed among treatments and times, except for more tertiary dentin deposition in the coronal third with the use of tetracycline compared with amoxicillin at 15 days (p < .05). In avulsed teeth, higher scores for the layer of odontoblast cells and lower scores for periapical inflammatory infiltrate at 7 days and pulp necrosis at 7 and 15 days were observed in the amoxicillin group compared to the saline and tetracycline groups (p < .05). At 30 days, however, no differences were observed among treatments. CONCLUSIONS The use of systemic antibiotic therapy with tetracycline or amoxicillin for 7 days did not contribute to pulp repair following extrusive luxation or avulsion in rats. However, the results warrant further research into the use of amoxicillin for a more extended period of time in cases of avulsion.
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Affiliation(s)
- Alfredo Franco Queiroz
- Dentistry Department, Universidade Estadual de Maringá, Maringa, Brazil.,Surgery and Integrated Clinic, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista, Araçatuba, Brazil
| | | | - Alberto Consolaro
- Pathology Department, Faculdade de Odontologia de Bauru, Universidade de São Paulo, Bauru, Brazil
| | - Sônia Regina Panzarini
- Surgery and Integrated Clinic, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista, Araçatuba, Brazil
| | - Alline Batistussi França
- Surgery and Integrated Clinic, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista, Araçatuba, Brazil.,Dentistry Department, Centro Universitário de Maringá, Maringá, Brazil
| | - Moriel Evangelista Melo
- Surgery and Integrated Clinic, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista, Araçatuba, Brazil
| | - Wilson Roberto Poi
- Surgery and Integrated Clinic, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista, Araçatuba, Brazil
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Tanaka S, Toriumi T, Ito T, Okuwa Y, Futenma T, Otake K, Akiyama Y, Kurita K, Nagao T, Honda M. Histological analysis of dental pulp response in immature or mature teeth after extra-oral subcutaneous transplantation into mice dorsum. J Oral Sci 2021; 63:184-190. [PMID: 33731506 DOI: 10.2334/josnusd.20-0611] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
PURPOSE The aim of this study was to assess the response of dental pulp associated with donor or host cells in the pulp chamber and root canal after extra-oral transplantation. METHODS Wild type or green fluorescent protein (GFP) transgenic first molars from 3-week, 6-week, and 12-week mice were transplanted into the subcutaneous layer of GFP mice or wild type mice. The teeth were histologically and immunohistochemically examined at 5 weeks after transplantation. RESULTS Blood vessels present in the original coronal pulp had anastomosed with those from the recipient tissue that had invaded the root canal. Two distinct eosin-stained extracellular matrices were observed in the pulp chamber and root canal. Acellular matrix composed of nestin-positive, odontoblast-like cells invaded from the outside and was seen in the root canal of 3-week teeth. Cellular matrix comprising alkaline phosphatase (ALP)-positive fibroblast-like cells appeared in the original coronal pulp. In the root canal of the 6-week and 12-week teeth, cellular extracellular matrix consisting of ALP-positive fibroblast-like cells had invaded the recipient tissue. CONCLUSION Dental pulp from immature teeth might be able to regenerate dentin-like tissue. This model could be useful in the development of an optimized vitalization treatment.
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Affiliation(s)
- Sho Tanaka
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University
| | - Taku Toriumi
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University
| | - Tatsuaki Ito
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University
| | - Yuta Okuwa
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University
| | - Taku Futenma
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University
| | - Keita Otake
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University
| | - Yasunori Akiyama
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University
| | - Kenichi Kurita
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University
| | - Toru Nagao
- Department of Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University
| | - Masaki Honda
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University
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Queiroz AF, Hidalgo MM, Consolaro A, Panzarini SR, França AB, Pires WR, Poi WR. Calcific metamorphosis of pulp after extrusive luxation. Dent Traumatol 2018; 35:87-94. [PMID: 30480872 DOI: 10.1111/edt.12456] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 11/21/2018] [Accepted: 11/21/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND/AIM The literature on the pathogenesis of extrusive dental luxation has been focused on periodontal tissue responses, with little attention given to the pulp. The aim of this study was to evaluate the response of dental pulp of teeth following extrusive luxation in a rat model. MATERIAL AND METHODS The maxillary right central incisors of 30 rats were extrusively luxated and repositioned after 5 minutes. The animals were euthanized after 7, 15, and 30 days to provide three groups: I, II, and III, respectively (n = 10). Histological sections were stained with H and E for histomorphometric analysis of the odontoblast layer, reparative dentin deposition, Hertwig's epithelial root sheath, pulp necrosis, and periapical inflammatory infiltrate. RESULTS In most cases, new vascular formation occured in association with reparative dentin deposition on the root walls and within the pulp. In some cases, dentin deposition occupied the entire pulp space over time, with no other types of non-odontogenic hard tissues being observed. Pulp necrosis with the presence of periapical inflammatory infiltrate was also observed in a few cases. No statistical differences were observed among the studied groups. CONCLUSIONS Following extrusive luxation, calcific metamorphosis of the pulp is very likely to occur.
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Affiliation(s)
- Alfredo Franco Queiroz
- Dentistry Department, Universidade Estadual de Maringá, Maringá, PR, Brazil.,Surgery and Integrated Clinics, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista, Araçatuba, SP, Brazil
| | | | - Alberto Consolaro
- Pathology Department, Faculdade de Odontologia de Bauru, Universidade de São Paulo, Bauru, SP, Brazil
| | - Sônia Regina Panzarini
- Surgery and Integrated Clinics, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista, Araçatuba, SP, Brazil
| | - Alline Batistussi França
- Surgery and Integrated Clinics, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista, Araçatuba, SP, Brazil.,Dentistry Department, Centro Universitário de Maringá, Maringá, PR, Brazil
| | - Willian Ricardo Pires
- Surgery and Integrated Clinics, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista, Araçatuba, SP, Brazil
| | - Wilson Roberto Poi
- Surgery and Integrated Clinics, Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista, Araçatuba, SP, Brazil
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Ahmed VKS, Krishnaswamy NR, Thavarajah R. Miniscrew implant fracture and effects of such retained tip on dentin-pulp complex: a histological report. Dent Traumatol 2015; 32:161-5. [PMID: 26382020 DOI: 10.1111/edt.12225] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2015] [Indexed: 01/21/2023]
Abstract
Miniscrew implants provide an excellent orthodontic anchorage. Besides the clinical benefits, miniscrew implants cause minor discomforts and in certain instances poses problematic complications. Damage to the adjacent tooth structure is the most feared complication of miniscrew implant placement, while fracture of miniscrew implants is the rarest. Miniscrew fracture could occur either during its placement or during its removal. An unusual case report is presented of a miniscrew implant tip fracture following root contact while attempting to remove it. This report highlights the effect of such miniscrew implant fracture on the dentin-pulp complex. The present case is probably the first to give direct histological evidence in humans that a miniscrew fracture or a retained miniscrew implant tip along the dentin/cementum without obvious miniscrew implant penetration could elicit pulp changes. Therefore this case report emphasizes the fact that prior to placing miniscrew implant, clinicians should have acquired proper training and adequate skills in terms of MSI placement and management of fractured MSI.
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Affiliation(s)
- Valai Kasim Shakeel Ahmed
- Department of Orthodontics and Dentofacial Orthopedics, Ragas Dental College and Hospital, Uthandi, Chennai, India
| | | | - Rooban Thavarajah
- Department of Oral and Maxillofacial Pathology, Ragas Dental College and Hospital, Uthandi, Chennai, India
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