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Mohan K, Sivarajan S, Lau MN, Othman SA, Fayed MMS. Soft tissue changes with skeletal anchorage in comparison to conventional anchorage protocols in the treatment of bimaxillary proclination patients treated with premolar extraction : A systematic review. J Orofac Orthop 2024; 85:146-162. [PMID: 35829730 DOI: 10.1007/s00056-022-00411-9] [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: 09/21/2021] [Accepted: 05/29/2022] [Indexed: 11/24/2022]
Abstract
PURPOSE This review systematically evaluates the evidence related to comparisons between skeletal and conventional anchorage protocols in the treatment of bimaxillary proclination patients who underwent premolars extraction with respect to soft tissue profile changes, treatment duration and three-dimensional (3D) soft tissue changes. METHODS Electronic database search and hand search with no language limitations were conducted in the Cochrane Library, PubMed, Ovid, Web of Science, Scopus and ClinicalTrials.gov. The selection criteria were set to include studies with patients aged 13 years and above requiring extractions of upper and lower first premolars to treat bimaxillary proclination with high anchorage demand. Risk of bias assessment was undertaken with Cochrane's Risk Of Bias tool 2.0 (ROB 2.0) for randomised controlled trials (RCTs) and ROBINS‑I tool for nonrandomised prospective studies. The Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach was used for quality assessment. Results were summarised qualitatively; no meta-analysis was conducted. RESULTS Two RCTs and two nonrandomised prospective studies were included. According to the GRADE approach, there is low to very low quality of evidence that treatment using mini-implant anchorage may significantly change nasolabial angle, upper and lower lip procumbence, and facial convexity angle compared to treatment with conventional anchorage. Similarly, very low quality evidence exists showing no differences in treatment duration between treatments with skeletal or conventional anchorage. CONCLUSIONS The overall existing evidence regarding the effect of anchorage protocols on soft tissue changes in patients with bimaxillary protrusion and premolar extraction treatment plans is of low quality. TRIAL REGISTRATION NUMBER PROSPERO CRD42020216684.
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Affiliation(s)
- Kumeran Mohan
- Department of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya, 50603, Lembah Pantai, Kuala Lumpur, Malaysia
- Department of Orthodontics, Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan, Malaysia
| | - Saritha Sivarajan
- Department of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya, 50603, Lembah Pantai, Kuala Lumpur, Malaysia.
| | - May Nak Lau
- Department of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya, 50603, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Siti Adibah Othman
- Department of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya, 50603, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Mona M Salah Fayed
- Department of Orthodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt
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Yuan J, Zhuang Z, Niu L, Zhang Y, Cui S, Su H, Chen G, Zhang X, Han B, Chen S. A comparative study on anterior teeth retraction-related hard and soft tissue changes with physiologic anchorage control technique. Eur J Med Res 2024; 29:110. [PMID: 38336775 PMCID: PMC10854088 DOI: 10.1186/s40001-024-01670-5] [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: 12/26/2022] [Accepted: 01/13/2024] [Indexed: 02/12/2024] Open
Abstract
Aim of this comparative cross-sectional study was to evaluate the effect of anterior teeth retraction and related hard and soft tissue change under physiologic anchorage control in patients with chief complain of protrusive teeth. 68 Class I or II orthodontic patients undergoing four-premolar extraction and requiring maximum or medium anchorage were included. Patients were treated with physiologic anchorage control technique (PASS group, n = 34, 18.6 ± 7.7 years, 10 male and 24 female) and self-ligation technique (Damon group, n = 34, 17.5 ± 5.4 years, 13 male and 21 female), respectively. TADs were used for anchorage reinforcement in Damon group. Pre- and post-treatment cephalograms were collected. Twenty-six skeletal, dental and soft tissue items were measured and analyzed using a blinded method. T test and paired rank-sum test were used for statistical analysis. The baseline characteristics were similar between groups (P > 0.05). After treatment, inter-group comparison showed statistically significant differences in the decrease of skeletal measurements ∠ANB (- 0.73 ± 1.05° in PASS group and - 0.25 ± 0.84° in the Damon group), Wits value (- 2.56 ± 2.29 mm in PASS group and - 0.47 ± 2.15 mm in Damon group) and soft tissue measurement UL-E (- 2.75 ± 1.36 mm in PASS group and - 2.03 ± 1.30 mm in Damon group) and the increase of FCA and Z angle, which was 2.03 ± 2.12°and 9.52 ± 4.78°in PASS group and 0.97 ± 2.12°and 6.96 ± 4.43°in Damon group, respectively (P < 0.05). Our results indicated that significant anterior teeth retraction and profile improvement could be achieved with PASS technique without additional anchorage devices. Appropriate application of physiologic anchorage control could reduce the dependence of TADs for anterior teeth retraction.
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Affiliation(s)
- Jianqiao Yuan
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center for Oral Biomaterials and Digital Medical Devices, Beijing, 100081, China
- Department of Orthodontics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Zimeng Zhuang
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center for Oral Biomaterials and Digital Medical Devices, Beijing, 100081, China
| | - Longlong Niu
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center for Oral Biomaterials and Digital Medical Devices, Beijing, 100081, China
- Department of Stomatology, Handan Third People's Hospital, Handan, 056001, China
| | - Yuelan Zhang
- Department of Orthodontics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Shuxia Cui
- Department of Orthodontics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Hong Su
- First Clinical Division, Peking University School and Hospital of Stomatology, Beijing, 100034, China
| | - Gui Chen
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center for Oral Biomaterials and Digital Medical Devices, Beijing, 100081, China
| | - Xin Zhang
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center for Oral Biomaterials and Digital Medical Devices, Beijing, 100081, China
| | - Bing Han
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center for Oral Biomaterials and Digital Medical Devices, Beijing, 100081, China.
| | - Si Chen
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center for Oral Biomaterials and Digital Medical Devices, Beijing, 100081, China.
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Farahani M, Farimani RM, Eskandarloo F. Treatment for Severe Class II Open Bite Using a Bonded Hyrax Expander, IZC Mini-Implants, and MEAW Technique in an Adolescent Patient. Case Rep Dent 2023; 2023:8833818. [PMID: 37789900 PMCID: PMC10545458 DOI: 10.1155/2023/8833818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/29/2023] [Accepted: 08/21/2023] [Indexed: 10/05/2023] Open
Abstract
This case report describes the successful 3D treatment of a patient with a narrow maxilla and a severe class II open bite using a combination of a bonded hyrax expander, infrazygomatic crest mini-implants, and the multiloop edgewise arch-wire (MEAW) technique. A 14-year-old female with a thumb-sucking habit in childhood, presented with a severe open bite, a convex profile, and an obtuse nasolabial angle. Diagnosis revealed a skeletal Class II open bite with moderate crowding in the maxillary and mild crowding in the mandibular arch. Treatment objectives included eliminating the open bite, achieving normal overbite and overjet, and improving upper incisor visibility. Treatment involved the use of a bonded rapid palatal expansion device, mini-implants for maxillary intrusion, fixed appliances, vertical elastics, and a MEAW. Treatment results showed resolution of the open bite, improvement in overbite and overjet, achievement of Class I molar and canine relationships, and improved upper incisors visibility. Fixed appliances were used for the whole 22-month therapy period, and post-treatment records demonstrated that the treatment's objectives were met.
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Affiliation(s)
- Mohammad Farahani
- Department of Orthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Morvaridi Farimani
- Dentofacial Deformities Research Center, Research Institute of Dental Sciences, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Eskandarloo
- Department of Orthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Zhao Y, Jia T, Wang Z. Comparative analysis of anchorage strength and histomorphometric changes after implantation of miniscrews in adults and adolescents: an experimental study in Beagles. BMC Oral Health 2023; 23:639. [PMID: 37670309 PMCID: PMC10478492 DOI: 10.1186/s12903-023-03318-y] [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: 03/12/2023] [Accepted: 08/16/2023] [Indexed: 09/07/2023] Open
Abstract
OBJECTIVES This study aimed to explore the differences in anchorage strength and histomorphometric changes in orthodontic miniscrews between adult and adolescent beagles. MATERIAL AND METHOD Six adult beagles and six young beagles were used as experimental subjects, and eight miniscrews were symmetrically placed in the posterior mandible of each dog. Measurement of the displacement (mm) of two adjacent miniscrews after load application was performed to compare the anchorage strength between the adult and adolescent groups. Three intravital bone fluorochromes (oxytetracycline, calcein green, xylenol orange) were administered postoperatively to mark the active bone-forming surface. Subsequently, the mineral apposition rate and bone-implant contact ratio were measured for dynamic and static histomorphometry. Finally, the expression levels of the RANKL/OPG ratio were evaluated by immunohistochemistry. RESULTS The average displacement of miniscrews in the adult group was significantly less than that in the adolescent group after load application. For histomorphometry analysis, the mineral exposure rate in the adolescent group was higher than that in the adult group with or without force application. In addition, more fractures and new bone formation but deceased bone-implant contact ratios were observed in the adolescent group than in the adult group. The ratio of RANKL/OPG expression increased more in the adolescent group than in the adult group. CONCLUSION Miniscrews do not remain in the same position as skeletal anchors, and the amount of displacement was higher in adolescent group than that in adult group, reflecting the weaker anchorage strength of miniscrews in adolescents due to the higher bone turnover rate and active bone remodelling. Therefore, it is feasible to apply orthodontic loading to the miniscrews in adult patients earlier, even immediately, but it is recommended to wait a period for the adolescents.
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Affiliation(s)
- Yi Zhao
- Department of Orthodontics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 324 Jingwu Road, Jinan, Shandong, China
| | - TingTing Jia
- Department of Orthodontics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 324 Jingwu Road, Jinan, Shandong, China
| | - Zhiqiang Wang
- Department of Orthodontics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 324 Jingwu Road, Jinan, Shandong, China.
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Okawa K, Matsunaga S, Kasahara N, Kasahara M, Tachiki C, Nakano T, Abe S, Nishii Y. Alveolar Bone Microstructure Surrounding Orthodontic Anchor Screws with Plasma Surface Treatment in Rats. J Funct Biomater 2023; 14:356. [PMID: 37504851 PMCID: PMC10381738 DOI: 10.3390/jfb14070356] [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: 06/18/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023] Open
Abstract
A lateral load was applied to anchor screws that had undergone surface treatment, and the structure, cellular dynamics, and quality of the bone surrounding anchor screws were analyzed to investigate the effect of this surface treatment on the peri-implant jawbone. In addition, bone microstructural characteristics were quantitatively evaluated for each site of loading on the bone around the anchor screw. Rats were euthanized after observation on days 3, 5, or 7, and bone quality analyses were performed. Bone-implant contact rate increased more rapidly at an early stage in the treated surface group than in the untreated surface group. Bone lacuna morphometry showed that the measured values adjacent to the screw at the screw neck on the compressed side (A) and at the screw tip on the uncompressed side (D) were significantly lower than those at the screw tip on the compressed side (B) and at the screw neck on the uncompressed side (C). Collagen fiber bundle diameter showed that the measured values adjacent to regions A and D were significantly higher than those at regions B and C. Anchor screw surface activation facilitates initial bone contact of the screw, suggesting that early loading may be possible in clinical practice.
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Affiliation(s)
- Keisuke Okawa
- Department of Orthodontics, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
- Oral Health Science Center, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Satoru Matsunaga
- Oral Health Science Center, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
- Department of Anatomy, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Norio Kasahara
- Oral Health Science Center, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
- Department of Histology and Developmental Biology, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Masaaki Kasahara
- Oral Health Science Center, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
- Department of Dental Materials Science, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Chie Tachiki
- Department of Orthodontics, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
- Oral Health Science Center, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Takayoshi Nakano
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita 565-0871, Japan
| | - Shinichi Abe
- Oral Health Science Center, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
- Department of Anatomy, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Yasushi Nishii
- Department of Orthodontics, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
- Oral Health Science Center, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
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Yoneyama Y, Matsuno T, Fujioka-Kobayashi M, Satomi T. In vitro and in vivo evaluation of surface functionalization of titanium with H 2 O 2 hydrothermal treatment and FGF-2. J Biomed Mater Res B Appl Biomater 2023; 111:646-655. [PMID: 36245283 DOI: 10.1002/jbm.b.35183] [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: 12/09/2021] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 01/21/2023]
Abstract
The goals of the study were to investigate the effects on bone bioactivity of a titanium dioxide layer formed by hydrothermal oxidation of a titanium surface with hydrogen peroxide (H2 O2 ) and loading with fibroblast growth factor-2 (FGF-2) in vitro and in vivo. Ti-6Al-4V discs were hydrothermally oxidized with H2 O2 and then loaded with FGF-2. After cytotoxicity testing, Ti-6Al-4V mini-implants were subjected to the same treatment, and their osteogenic potential was evaluated histologically in a rat model. H2 O2 hydrothermal oxidation resulted in a dense porous network structure and hydrophilic changes, which improved retention of FGF-2. Morphologically, the cell density was higher, cell elongation was more pronounced, and the cell adhesion area was significantly higher in FGF-2-loaded cells than in those without FGF-2. In a cell proliferation assay using mouse osteoblast-like cells, absorbance tended to increase over time, especially in the FGF-2 group after 7 and 14 days, and in a bone differentiation assay based on ALP activity, there was a significant increase in the FGF-2 group after 14 days. In the rat model, H2 O2 hydrothermal oxidation and FGF-2 loading both resulted in more laminar bone tissue in the bone marrow around the mini-implant. These results suggest that titanium surface functionalization by H2 O2 hydrothermal oxidation and FGF-2 may promote initial cell adhesion, proliferation, and osteodifferentiation, and enhance bone bioactivity. These effects all contribute to early bonding of an implant with the surrounding bone.
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Affiliation(s)
- Yuya Yoneyama
- Department of Oral and Maxillofacial Surgery, The Nippon Dental University School of Life Dentistry at Tokyo, Fujimi, Japan
| | - Tomonori Matsuno
- Department of Oral and Maxillofacial Surgery, The Nippon Dental University School of Life Dentistry at Tokyo, Fujimi, Japan
| | - Masako Fujioka-Kobayashi
- Department of Oral and Maxillofacial Surgery, The Nippon Dental University School of Life Dentistry at Tokyo, Fujimi, Japan
| | - Takafumi Satomi
- Department of Oral and Maxillofacial Surgery, The Nippon Dental University School of Life Dentistry at Tokyo, Fujimi, Japan
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Analysis for Predictors of Failure of Orthodontic Mini-implant Using Patient-Specific Finite Element Models. Ann Biomed Eng 2023; 51:594-603. [PMID: 36167866 DOI: 10.1007/s10439-022-03067-z] [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: 04/21/2022] [Accepted: 08/27/2022] [Indexed: 11/01/2022]
Abstract
In this study, we analyzed the clinical factors and mechanical parameters for predicting orthodontic mini-implant (OMI) failure in the mandible, which has different properties from the maxilla. A patient-specific finite element analysis was applied to 32 OMIs (6 failures and 26 successes) implanted between the mandibular second premolars and first molars used for anchorage. The peak stress and strain parameters were calculated for each sample. A logistic regression of the failure (vs. success) of OMIs on the mechanical parameters in the models was conducted. In addition, the influence of clinical factors on the mechanical parameters considered to be related to OMI failure was examined by a regression analysis. The mechanical parameter which best predicts OMI failure in the mandible was found to be a minimum principal strain of between 0.5 to 1.0 mm from the OMI surface (R2 = 0.8033). The results indicate the patient's bone density, distance between the OMIs and adjacent root, and vertical implantation angle of the OMIs are potential clinical predictors of OMI failure in the mandible.
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Ritchie C, McGregor S, Bearn DR. Temporary anchorage devices and the forces and effects on the dentition and surrounding structures during orthodontic treatment: a scoping review. Eur J Orthod 2023; 45:324-337. [PMID: 36763546 DOI: 10.1093/ejo/cjac072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
BACKGROUND Temporary anchorage devices (TADs) offer the clinician an immediate temporary source of skeletal anchorage for a range of orthodontic interventions. It is important to understand forces involved in using TADs and the effects on the dentition and surrounding structures, to improve clinical outcomes. OBJECTIVE To examine and qualitatively synthesize literature on the forces involved with the use of TADs and the effects on the dentition and surrounding structures in orthodontic tooth movement, to provide better understanding of the complex interactions and the clinical implications. SEARCH METHODS Electronic databases searched included: Cochrane Library [including Central Register of Controlled Trials (CENTRAL)], Embase via OVID, Pubmed, and Scopus. Study screening and selection were conducted in duplicate. SELECTION CRITERIA Studies selected were clinical studies, simulation studies (computer or laboratory-based), or animal studies with no restriction over gender, age, study type (excluding case reports), or setting. Studies focusing on the forces involved with the use of TADs in orthodontic treatment and their effects on the dentition and surrounding structures were included. DATA COLLECTION AND ANALYSIS A data charting form was piloted and refined. Data charting was performed independently and in duplicate. This consisted of key fields with predetermined options and free text. The extracted data were collated, and a narrative synthesis conducted. RESULTS The results from 203 included studies were grouped into seven TAD based interventions combining the clinical, simulation, and animal studies. They were: En masse retraction of anterior teeth, intrusion, movement of a single tooth, orthopaedic interventions, distalisation, maxillary expansion and other types. The forces involved with the use of TADs, and their effects on the dentition and surrounding structures, were presented in descriptive and tabular formats. LIMITATIONS This review restricted study language to English. Formal appraisal of the quality of evidence is not a required feature of scoping reviews, as per the PRISMA-ScR guidelines, however it was evident that a proportion of clinical studies were of high risk of bias and low quality and therefore any proposed changes the reader may consider to their clinical practice should be contextualized in light of this. CONCLUSIONS Across the seven types of TAD based interventions the effects on the dentition and surrounding structures are described providing a better understanding of the complex interactions. A guide to the level and direction of forces in each type of intervention is provided to aid clinicians in achieving high quality outcomes. IMPLICATIONS There is a need to validate future FEA simulation studies by comparing to clinical data. It is also recommended that future scoping reviews incorporate a formal critical appraisal of studies to facilitate the translation of the results into clinical practice. Development of a standard set of terms for TADs is recommended to facilitate future research. REGISTRATION Registration of a scoping review is not possible with PROSPERO. FUNDING None to declare.
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Affiliation(s)
- Colin Ritchie
- Orthodontic Department, Dundee Dental Hospital and Research School, University of Dundee, Scotland
| | - Scott McGregor
- Library & Learning Centre, University of Dundee, Scotland
| | - David R Bearn
- Orthodontic Department, University of Dundee, Scotland
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Effectiveness of micro-implant in vertical control during orthodontic extraction treatment in class II adults and adolescents after pubertal growth peak: a systematic review and meta-analysis. Clin Oral Investig 2023; 27:2149-2162. [PMID: 36738320 DOI: 10.1007/s00784-023-04881-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 01/24/2023] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To compare the effectiveness of micro-implant (MI) and conventional anchorage (CA) in vertical control during orthodontic extraction treatment of class II adults and adolescents after pubertal growth peak. MATERIALS AND METHODS Literature search was conducted through Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, EMBASE, Web of Science, China National Knowledge Infrastructure (CNKI), Wanfang Database, VIP, China Biology Medicine (CBM), and other sources, from inception to December 2021. Randomized clinical trials (RCTs) and controlled clinical trials (CCTs) were included. Mean differences (MDs) with 95% confidence intervals (CIs) were conducted. A meta-analysis concerning change of mandibular plane, vertical change of upper and lower molar, change of occlusal plane, SNB, chin position, and profile was carried out. RESULTS A total of 10,669 records were identified in the database search, and 19 studies (10 RCTs and 9 CCTs) were included in the final analysis. Compared with CA, MI significantly decreased mandibular plane angle and intruded upper molars. No significant difference was found in vertical change of lower molars, occlusal plane, SNB, chin position, and profile. CONCLUSION MI seems to be more effective than CA in vertical control during orthodontic extraction treatment of class II adults and adolescents after pubertal growth peak. CLINICAL RELEVANCE MI should be given priority when considering the vertical control of class II patients, which is beneficial to the counterclockwise rotation of mandible or at least prevention of deterioration of the profile.
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Wu Y, Zhu B, Zhang X, Li D, Zhang K, Liang J, Cao B. Preparation and characterization of Y-doped microarc oxidation coating on AZ31 magnesium alloys. J Biomater Appl 2022; 37:930-941. [PMID: 35971286 DOI: 10.1177/08853282221121886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The rapid degradation characteristics of magnesium alloys limit its application in the field of orthopedic fracture fixation and cardiovascular stents. This study aimed to improve the corrosion resistance and biocompatibility of AZ31 magnesium alloys and prepare degradable implant materials. Micro-arc oxidation (MAO) was used to change the concentration of yttrium acetate in the electrolyte to prepare coatings with different yttrium content on the surface of AZ31 magnesium alloy. Through characterization, it is proved that the yttrium in the coating mainly exists in the form of Y3+. The polarization potential experiment shows that the micro-arc oxidation coating significantly improves the corrosion resistance of magnesium alloys. With the increase of yttrium acetate concentration in the electrolyte, the corrosion resistance of the coating first increases and then weakens. When the concentration is 0.0035 mol/L, the coating has the highest corrosion resistance. The results of CCK-8 cytotoxicity experiment and cell morphology observation also proved that the cell viability in each group was greater than 140%, and the yttrium-doped coating on the surface of AZ31 magnesium alloy has no cytotoxicity, can promote cell growth, and has good biocompatibility.
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Affiliation(s)
| | - Bowu Zhu
- 12426Lanzhou University, Lanzhou, China
| | | | - Duhong Li
- 12426Lanzhou University, Lanzhou, China
| | | | - Jun Liang
- 53045Chinese Academy of Sciences Lanzhou Branch, Lanzhou, China
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The Efficacy of Orthodontics plus Implant Anchorage in Orthodontic Treatment: A Randomized Controlled Study. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:4049076. [PMID: 35677371 PMCID: PMC9170419 DOI: 10.1155/2022/4049076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/28/2022] [Accepted: 05/09/2022] [Indexed: 11/25/2022]
Abstract
Objective To investigate the efficacy of orthodontics plus implant anchorage in orthodontic treatment. Methods This randomized controlled study was conducted on 90 patients who had orthodontic treatment in our hospital between October 2019 and October 2020, and they were assigned to either a control group (n = 45) or an observation group (n = 45) via the random number table method. Patients in the control group received orthodontics while those in the observation group underwent orthodontics plus implant anchorage. The two groups were compared in terms of clinical indexes, efficacy, orthodontic state, adverse reaction rate, quality of life, and satisfaction. Results After treatment, orthodontics plus implant anchorage led to lower gingival attachment level, gingival bleeding index, plaque index, and periodontal probing depth versus orthodontics alone (P < 0.05); orthodontics plus implant anchorage contributed to a higher efficacy versus orthodontics alone (91.11% vs. 73.33%, P < 0.05); orthodontics plus implant anchorage resulted in smaller molar displacement, larger protrusion distance of the upper central incisor, and larger inclination angle of the upper central incisor (P < 0.05); orthodontics plus implant anchorage was associated with fewer adverse reactions (4.44% vs. 26.67%, P < 0.05) and a higher quality of life scores versus orthodontics alone (P < 0.05); orthodontics plus implant anchorage yielded a higher satisfaction level versus orthodontics alone (95.56% vs. 66.67%, P < 0.05). Conclusion The orthodontics plus implant anchorage offers a promising solution in orthodontic treatment. It is conducive to restoring dental indicators and improving quality of life and satisfaction. It is therefore worthy of application.
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Yassir YA, Nabbat SA, McIntyre GT, Bearn DR. Which anchorage device is the best during retraction of anterior teeth? An overview of systematic reviews. Korean J Orthod 2022; 52:220-235. [PMID: 35418518 PMCID: PMC9117787 DOI: 10.4041/kjod21.153] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 10/07/2021] [Accepted: 11/17/2021] [Indexed: 12/04/2022] Open
Abstract
Objective To evaluate the available evidence regarding the clinical effectiveness of different types of anchorage devices. Methods A comprehensive literature search of different electronic databases was conducted for systematic reviews investigating different anchorage methods published up to April 15, 2021. Any ongoing systematic reviews were searched using PROSPERO, and a grey literature search was undertaken using Google Scholar and OpenGrey. No language restriction was applied. Screening, quality assessment, and data extraction were performed independently by two authors. Information was categorized and narratively synthesized for the key findings from moderate- and high-quality reviews. Results Fourteen systematic reviews were included (11 were of moderate/high quality). Skeletal anchorage with miniscrews was associated with less anchorage loss (and sometimes with anchorage gain). Similarly, skeletal anchorage was more effective in retracting anterior teeth and intruding incisors and molars, resulting in minor vertical skeletal changes and improvements in the soft tissue profile. However, insufficient evidence was obtained for the preference of any anchorage method in terms of the duration of treatment, number of appointments, quality of treatment, patient perception, or adverse effects. The effectiveness of skeletal anchorage can be enhanced when directly loaded, used in the mandible rather than the maxilla, used buccally rather than palatally, using dual rather than single miniscrews, used for en-masse retraction, and in adults. Conclusions The level of evidence regarding anchorage effectiveness is moderate. Nevertheless, compared to conventional anchorage, skeletal anchorage can be used with more anchorage preservation. Further high-quality randomized clinical trials are required to confirm these findings.
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Affiliation(s)
- Yassir A Yassir
- Orthodontic Department, College of Dentistry, University of Baghdad, Baghdad, Iraq.,School of Dentistry, University of Dundee, Dundee, UK
| | | | | | - David R Bearn
- School of Dentistry, University of Dundee, Dundee, UK
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Matsumoto T, Matsunaga S, Kasahara M, Kasahara N, Nakano T, Ishimoto T, Nishii Y. Evaluation of the Microstructural Characteristics of Bone Surrounding Anchor Screws Placed under a Horizontal Load by Exploring the Orientation of Biological Apatite Crystals and Collagen Fiber Anisotropy. J HARD TISSUE BIOL 2022. [DOI: 10.2485/jhtb.31.79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | | | | | - Norio Kasahara
- Department of Histology and Developmental Biology, Tokyo Dental College
| | - Takayoshi Nakano
- Division of Materials & Manufacturing Science, Graduate School of Engineering, Osaka University
| | - Takuya Ishimoto
- Division of Materials & Manufacturing Science, Graduate School of Engineering, Osaka University
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14
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Ugarte OM, Gialain IO, de Carvalho NM, Fukuoka GL, Ballester RY, Cattaneo PM, Roscoe MG, Meira JBC. Can maxilla and mandible bone quality explain differences in orthodontic mini-implant failures? Biomater Investig Dent 2021; 8:1-9. [PMID: 33521649 PMCID: PMC7808375 DOI: 10.1080/26415275.2020.1863155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Purpose: This study aimed to compare the risk of orthodontic mini-implant (OMI) failure between maxilla and mandible. A critical analysis of finite-element studies was used to explain the contradiction of the greatest clinical success for OMIs placed in the maxilla, despite the higher quality bone of mandible. Materials and Methods: Four tridimensional FE models were built, simulating an OMI inserted in a low-dense maxilla, control maxilla, control mandible, and high-dense mandible. A horizontal force was applied to simulate an anterior retraction of 2 N (clinical scenario) and 10 N (overloading condition). The intra-bone OMI displacement and the major principal bone strains were used to evaluate the risk of failure due to insufficient primary stability or peri-implant bone resorption. Results: The OMI displacement was far below the 50–100 µm threshold, suggesting that the primary stability would be sufficient in all models. However, the maxilla was more prone to lose its stability due to overload conditions, especially in the low-dense condition, in which major principal bone strains surpassed the pathologic bone resorption threshold of 3000 µstrain. Conclusions: The differences in orthodontic mini-implant failures cannot be explained by maxilla and mandible bone quality in finite-element analysis that does not incorporate the residual stress due to OMI insertion.
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Affiliation(s)
- Omar Melendres Ugarte
- School of Dentistry, Department of Biomaterials and Oral Biology, University of São Paulo, São Paulo, Brazil
| | - Ivan Onone Gialain
- School of Dentistry, Department of Biomaterials and Oral Biology, University of São Paulo, São Paulo, Brazil
| | - Naor Maldonado de Carvalho
- School of Dentistry, Department of Biomaterials and Oral Biology, University of São Paulo, São Paulo, Brazil
| | - Gisele Lie Fukuoka
- School of Dentistry, Department of Biomaterials and Oral Biology, University of São Paulo, São Paulo, Brazil
| | - Rafael Yague Ballester
- School of Dentistry, Department of Biomaterials and Oral Biology, University of São Paulo, São Paulo, Brazil
| | - Paolo Maria Cattaneo
- Department of Dentistry, Section of Orthodontics, Aarhus University, Aarhus, Denmark
| | - Marina Guimarães Roscoe
- School of Dentistry, Department of Biomaterials and Oral Biology, University of São Paulo, São Paulo, Brazil
| | - Josete Barbosa Cruz Meira
- School of Dentistry, Department of Biomaterials and Oral Biology, University of São Paulo, São Paulo, Brazil
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15
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Teeth angulations after class II treatment with the Jones Jig followed by fixed appliances: A retrospective panoramic analysis. Int Orthod 2020; 18:436-442. [DOI: 10.1016/j.ortho.2020.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/09/2020] [Accepted: 06/13/2020] [Indexed: 11/22/2022]
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