1
|
Xie J, Huang H, Xu S, Zhou K, Chen X, Fang J, Zhao F. Dentin tubules as a long-term sustained release carrier to accelerate bone repair by loading FTY720. J Control Release 2025; 377:446-457. [PMID: 39581552 DOI: 10.1016/j.jconrel.2024.11.051] [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: 07/11/2024] [Revised: 11/04/2024] [Accepted: 11/20/2024] [Indexed: 11/26/2024]
Abstract
The controlled release of drugs remains a huge challenge in the field of tissue engineering. Current research focuses on the construction of drug carriers by using various advanced technologies. However, the pore-like structure that exists within our human body is ignored. Herein, a dental particle loaded with FTY720 by using dentin tubules (Dent-FTY720) was successfully prepared, which could achieve long-term sustained release of drugs. Meanwhile, Dent-FTY720 significantly promoted bone defect repair because of the similarity in composition to bone including hydroxyapatite and collagen. Furthermore, the loaded drugs exhibited both anti-immune and anti-inflammatory properties. This research introduces a novel concept in drug loading, highlighting the potential of dentin tubules as a drug delivery system.
Collapse
Affiliation(s)
- Jiaman Xie
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou 510280, China
| | - Haohui Huang
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou 510280, China
| | - Shijing Xu
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou 510280, China
| | - Keyi Zhou
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou 510280, China; School of Stomatology of Qingdao University, Qingdao 266003, PR China
| | - Xiaofeng Chen
- Department of Biomaterials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510641, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou, Guangdong 510006, PR China
| | - Jingxian Fang
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou 510280, China.
| | - Fujian Zhao
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou 510280, China.
| |
Collapse
|
2
|
Zhou Q, Wang J, Tang Y, Bu W, Gao J, Du S, Guo Y, Guo Y, Meng H. Evaluation of the effect of orthodontic treatment on the reliability of facial recognition by using three-dimensional model superimposition technique. Forensic Sci Int 2024; 364:112253. [PMID: 39426159 DOI: 10.1016/j.forsciint.2024.112253] [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: 07/25/2023] [Revised: 07/22/2024] [Accepted: 10/14/2024] [Indexed: 10/21/2024]
Abstract
3D-3D registration of facial models, has great advantages in personal individual identification in forensic medicine. However, orthodontic treatment has brought changes in facial soft and hard tissues, which has a potential effect in personal identification. The aim of the study was to explore whether orthodontic treatment affects 3D-3D facial recognition. A total of 68 patients aged between 18 and 38 were selected (30 subjects with tooth extraction, 38 subjects with non-tooth extraction) and a control group consisting of 30 volunteers without orthodontic treatment was selected from a database of 3dMD facial models. 3dMD facial model acquisition was performed twice for each subject. For both extraction and non-extraction groups, T0 was acquired before treatment, and T1 was acquired at the end of treatment. The time span of 2 times 3dMD facial model acquisition in the control group was about 2 years. 3dMD facial models were then registered onto other 3dMD models belonging to the same and different individuals according to the minimum point-to-point distance, getting a cohort of matches and mismatches. Root mean square (RMS) value of the minimum point-to-point distance between two models was then calculated. The intra- and inter-observer repeatability coefficients were 0.986 (P<0.001) and 0.982 (P<0.001). The absolute technical error of measurement (TEM) value was 0.05 mm and 0.04 mm, and relative technical error of measurement (rTEM) value was 4.91 % and 3.60 %, respectively. Possible significant differences between groups were assessed through independent samples t-test or Mann-Whitney U test (p<0.001). The average RMS value was 1.03±0.33 mm in matches of orthodontic group, 0.67±0.22 mm in matches of control group, and 2.66±0.51 mm in mismatches. An RMS value range of 1.70-1.77 mm could distinguish matches from mismatches in 100 % of cases in the present study. This study showed that orthodontic treatment would not affect 3D-3D facial recognition in adults for the purpose of individual identification in forensic medicine.
Collapse
Affiliation(s)
- Qin Zhou
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China; Department of Orthodontics, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China; State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, No. 169 Changle West Road, Xi'an, Shaanxi 710032, China
| | - Jinxiu Wang
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China; Department of Orthodontics, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China
| | - Yu Tang
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China; Department of Orthodontics, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China
| | - Wenqing Bu
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China; Department of Orthodontics, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China
| | - Jie Gao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, No. 169 Changle West Road, Xi'an, Shaanxi 710032, China
| | - Shaoyi Du
- Clinical Research Center of Shanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China; Institute of Artificial Intelligence and Robotics, College of Artificial Intelligence, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Yuxin Guo
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China
| | - Yucheng Guo
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China; Department of Orthodontics, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China; Clinical Research Center of Shanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China.
| | - Haotian Meng
- Key laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, No. 98 XiWu Road, Xi'an, Shaanxi 710004, China.
| |
Collapse
|
3
|
Bühling S, Schmied S, Eslami S, Brandt S, Plein N, Kopp S, Sayahpour B. Changes in the arch width and buccal corridor after fixed orthodontic treatment with Damon self-ligating system: premolar extraction vs. non-extraction. Dental Press J Orthod 2024; 29:e2423159. [PMID: 38985075 PMCID: PMC11235572 DOI: 10.1590/2177-6709.29.3.e2423159.oar] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 04/24/2024] [Indexed: 07/11/2024] Open
Abstract
INTRODUCTION Extraction vs. non-extraction is a crucial decision in orthodontic therapy. OBJECTIVE The aim of the present study was to investigate the changes in the dental arch width and buccal corridor after orthodontic treatment using extraction and non-extraction therapy with Damon self-ligating system. MATERIAL AND METHODS This retrospective study consisted of 35 patients (20 female and 15 male patients with median age of 12.5 years), treated by extracting 4 or 2 premolars, and 37 patients (16 female and 21 male patients with the median age of 12.8 years), treated without premolar extraction. Both groups were treated with Damon self-ligating system. Plaster models before (T0) and after (T1) treatment were measured, and the arch width values were determined at the level of the first molars, second premolars, canines and palatal rugae. Buccal corridor width was measured using the extraoral images at T0 and T1. Paired t-test was used for the analysis of the normally distributed data, and Wilcoxon Mann-Whitney U test was used for the data with non-normal distribution. Values of p<0.05 were set as statistically significant. RESULTS The upper intercanine width increased significantly in both groups (p<0.01). In the non-extraction group, the arch width increased significantly in the maxillary second premolar and first molar region (p<0.01) as well as in the region of the canines (p=0.04), second premolars (p=0.01) and first molars (p<0.01) of the mandible. The buccal corridor decreased significantly in the non-extraction group (p<0.01). CONCLUSION Premolar extraction in combination with Damon self-ligating system did not lead to reduction of the dental arch width in the maxilla, nor did it increase the size of the buccal corridors.
Collapse
Affiliation(s)
- Sarah Bühling
- Department of Orthodontics, Johann-Wolfgang Goethe University (Frankfurt, Germany)
| | | | - Sara Eslami
- Department of Orthodontics, Johann-Wolfgang Goethe University (Frankfurt, Germany)
| | - Silvia Brandt
- Department of Prosthodontics, Johann-Wolfgang Goethe University (Frankfurt, Germany)
| | - Nicolas Plein
- Department of Orthodontics, Johann-Wolfgang Goethe University (Frankfurt, Germany)
| | - Stefan Kopp
- Department of Orthodontics, Johann-Wolfgang Goethe University (Frankfurt, Germany)
| | - Babak Sayahpour
- Department of Orthodontics, Johann-Wolfgang Goethe University (Frankfurt, Germany)
| |
Collapse
|
4
|
Qiao Q, Zhang L, Xie X, Bai Y, Su L. Using a structured light scanner to evaluate 3-dimensional soft-tissue changes after extracting 4 premolars in young adult female patients. Am J Orthod Dentofacial Orthop 2024; 165:80-92.e4. [PMID: 37715754 DOI: 10.1016/j.ajodo.2023.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 07/01/2023] [Accepted: 07/01/2023] [Indexed: 09/18/2023]
Abstract
INTRODUCTION Facial esthetics have always received much attention in orthodontic treatment, especially in young adult female patients. Three-dimensional (3D) soft-tissue changes after orthodontic extraction have not been fully explained. This study evaluated the 3D morphologic changes after orthodontic extraction in young female patients using a structured light scanner. METHODS Forty-five adult female patients aged 20-25 years were enrolled in our study. The treatment group consisted of patients who received orthodontic treatment with 4 premolar extractions, and the control group was composed of young female volunteers who had not undergone any orthodontic treatment. To monitor the soft-tissue changes, 9 morphologic regions and 12 landmarks were identified for the 3D deviation analyses. The spatial deviations of landmarks and regions in the x, y, and z directions were constructed for quantitative analysis. Color map images were constructed to visualize soft-tissue displacement as a qualitative evaluation. The paired sample test was used to compare differences at the beginning of the experiment (T0) and after 24 months (T1) in both groups. An independent t test with Bonferroni correction was performed to compare differences between the treatment and control groups. A linear regression test was performed between incisor retraction and changes in the perioral tissues. RESULTS Subtracting the effect of aging from the lip changes in the control group, the treatment group showed a statistically significant difference in the displacement of labrale superius (-1.37 mm), labrale inferius (-1.89 mm), the upper lip region (-0.98 mm), and the lower lip region (-1.36 mm) along the z-axis. No significant differences were found between the treatment and control groups in the temporal, parotideomasseteric, and buccal regions. Pearson correlation tests indicated a positive correlation between incisor tip retraction and changes in soft tissues (two-dimensional cephalometric analysis, 3D landmark measurements, and 3D regional measurements). The correlation coefficient ranged between 0.45 and 0.55. CONCLUSIONS Three-dimensional soft-tissue changes were mainly concentrated in the upper and lower lip regions in adult female patients after the 4 premolars were extracted. For female patients aged 20-25 years with 4 extracted premolars, soft-tissue changes in the temporal, parotideomasseteric, and buccal regions were not clinically significant.
Collapse
Affiliation(s)
- Qingchen Qiao
- School of Stomatology, Capital Medical University, Beijing, China
| | - Li Zhang
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
| | - Xianju Xie
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
| | - Yuxing Bai
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China.
| | - Li Su
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China.
| |
Collapse
|
5
|
Benson PE, Alshawy E, Fenton GD, Frawley T, Misra S, Ng T, O'Malley P, Smith G. Extraction vs nonextraction of premolars for orthodontic treatment: A scoping review examining the extent, range, and characteristics of the literature. Am J Orthod Dentofacial Orthop 2023; 164:368-376. [PMID: 36967315 DOI: 10.1016/j.ajodo.2023.02.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 02/01/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION The debate about whether malocclusion can or should be treated with or without extraction of premolars continues. This scoping review quantifies the literature, summarizes the outcomes researched and methods, and proposes a way to reduce uncertainty in this area. METHODS Electronic and gray literature searches were undertaken without language restriction, but non-English language titles and abstracts were not translated. A minimum of 2 people independently screened the titles and abstracts. RESULTS Searches identified 9010 articles, of which 3851 were duplicates; 5159 were screened, and 4617 were excluded (1092 laboratory or animal studies, 1219 case reports or series, 2306 with no information). By consensus, 399 articles contained information concerning differences between orthodontic patients treated with or without premolar extractions (143 were unclear). The majority (n = 372) reported outcomes in 8 areas. Fifty-seven were review articles (32 systematic reviews and 25 nonsystematic reviews or opinions). The most common research design in the remainder was a cohort (n = 280, 82% of 342 articles reporting primary data), of which a very large majority were considered retrospective (n = 249, 89% of articles reported for subjects over ≥2 time points). Only 28 (8% of articles reporting primary data) were judged to involve prospective data collection (4 randomized controlled trials [RCTs], 23 cohorts, 1 unclear design). Excluding reviews and unclear articles, 99% (332 out of 336) were considered observational research and only 1% were interventional. CONCLUSIONS There was limited low-quality evidence that extracting premolars in orthodontic patients have a possible negative effect in 2 outcome areas and a positive effect in 1 outcome area. Most study reports were of low methodological quality, and further reviews are unlikely to provide new information. Investigators should concentrate on collecting primary data of outcomes important to patients. A protocol has been made available to help reduce methodological differences, assist future meta-analyses and increase the generalizability of findings: https://doi.org/10.17605/OSF.IO/CQ49Y.
Collapse
Affiliation(s)
- Philip E Benson
- Academic Unit of Oral Health, Dentistry and Society, School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom.
| | - Ebrahim Alshawy
- Department of Orthodontics and Pediatric Dentistry, College of Dentistry, Qassim University, Buraydah, Qassim, Saudi Arabia
| | - Gavin D Fenton
- Orthodontic Departments, Cumberland Infirmary, North Cumbria Acute Hospitals NHS Trust and Newcastle Dental Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Tom Frawley
- Orthodontic Department, Charles Clifford Dental Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
| | - Sangeeta Misra
- Orthodontic Department, Charles Clifford Dental Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
| | - Teresa Ng
- Shropshire Community Dental Service NHS Trust, Shrewsbury, United Kingdom
| | - Paul O'Malley
- Orthodontic Department, Charles Clifford Dental Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
| | - Gillian Smith
- Orthodontic Department, James Cook University Hospital, South Tees Hospitals NHS Foundation Trust, Middlesborough, United Kingdom
| |
Collapse
|
6
|
Fan Y, Liu Z, Chen G, Han B, Song G, Matthews H, Claes P, Jiang R, Xu T. Quantification and visualization of the tooth extraction effects on face with spatially dense geometric morphometrics. Orthod Craniofac Res 2023; 26:171-177. [PMID: 35751510 DOI: 10.1111/ocr.12597] [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: 03/26/2022] [Revised: 06/12/2022] [Accepted: 06/17/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE To apply geometric morphometrics and multivariate statistics to evaluate changes of the face for female Chinese patients who underwent orthodontic treatment with different type of anchorage control. METHODS Forty-six adult female patients were enrolled including 33 four first premolar extraction cases (17 patients with mini-implants for maximum anchorage control and 16 patients without mini-implants) and 13 non-extraction cases with minimum treatment duration of 15 months. Spatially dense correspondence was established among all the images The pre-and post-treatment average faces of the two extraction groups and the non-extraction group were generated. Partial least squares regression was used to test the statistical significance of the effects of treatment for different anchorage choice. RESULTS The upper and lower lips were retruded significantly after treatment in the extraction groups. In the maximum anchorage control group, the temple and cheek were depressed by approximately 1 mm, and the zygomatic regions were increased in the mid-face. However, these changes were not statistically significant. In comparison, no statistically significant facial changes occurred in the non-extraction group. CONCLUSIONS The anchorage choice and the removal of four first premolar extraction influence lip shape as well as the perioral regions. However, extraction treatment does not impact the appearance of the cheeks and temples on a statistically level, as compared to orthodontic treatment without premolar extractions. Spatially dense geometric morphometric facilitates comprehensive treatment effect quantification and visualization on the full facial changes for improving orthodontic outcome evaluation.
Collapse
Affiliation(s)
- Yi Fan
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
- Facial Science, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
| | - Zhiyu Liu
- Second Dental Center, Peking University School and Hospital of Stomatology, Beijing, China
| | - Gui Chen
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Bing Han
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Guangying Song
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Harold Matthews
- Facial Science, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- Medical Imaging Research Centre, Universitair Ziekenhuis, Leuven, Belgium
| | - Peter Claes
- Facial Science, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- Medical Imaging Research Centre, Universitair Ziekenhuis, Leuven, Belgium
- Department of Electrical Engineering, KU Leuven, Leuven, Belgium
| | - Ruoping Jiang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Tianmin Xu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| |
Collapse
|
7
|
CATTANEO PM, CORNELIS MA. Digital workflows in Orthodontic postgraduate training. Semin Orthod 2022. [DOI: 10.1053/j.sodo.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|