Korean Journal of Orthodontics最新文献_第3页

Comparison of dimensional accuracy between direct-printed and thermoformed aligners 直接印刷和热成型对准器尺寸精度的比较

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2022-04-22 DOI: 10.4041/kjod21.269

Nickolas Koenig, Jin-Young Choi, Julie F. McCray, Andrew Hayes, P. Schneider, Ki Beom Kim

{"title":"Comparison of dimensional accuracy between direct-printed and thermoformed aligners","authors":"Nickolas Koenig, Jin-Young Choi, Julie F. McCray, Andrew Hayes, P. Schneider, Ki Beom Kim","doi":"10.4041/kjod21.269","DOIUrl":"https://doi.org/10.4041/kjod21.269","url":null,"abstract":"Objective The purpose of this study was to evaluate and compare the dimensional accuracy between thermoformed and direct-printed aligners. Methods Three types of aligners were manufactured from the same reference standard tessellation language (STL) file thermoformed aligners were manufactured using Zendura FLXTM (n = 12) and Essix ACETM (n = 12), and direct-printed aligners were printed using Tera HarzTM TC-85DAP 3D Printer UV Resin (n = 12). The teeth were not manipulated with any tooth-moving software in this study. The samples were sprayed with an opaque scanning spray, scanned, imported to Geomagic® Control XTM metrology software, and superimposed on the reference STL file by using the best-fit alignment algorithm. Distances between the aligner meshes and the reference STL file were measured at nine anatomical landmarks. Results Mean absolute discrepancies in the Zendura FLXTM aligners ranged from 0.076 ± 0.057 mm to 0.260 ± 0.089 mm and those in the Essix ACETM aligners ranged from 0.188 ± 0.271 mm to 0.457 ± 0.350 mm, while in the direct-printed aligners, they ranged from 0.079 ± 0.054 mm to 0.224 ± 0.041 mm. Root mean square values, representing the overall trueness, ranged from 0.209 ± 0.094 mm for Essix ACETM, 0.188 ± 0.074 mm for Zendura FLXTM, and 0.140 ± 0.020 mm for the direct-printed aligners. Conclusions This study showed greater trueness and precision of direct-printed aligners than thermoformed aligners.","PeriodicalId":49934,"journal":{"name":"Korean Journal of Orthodontics","volume":"139 1","pages":"249 - 257"},"PeriodicalIF":1.9,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86546335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Split orthodontic airway plate: An innovation to the utilization method of conventional orthodontic airway plate for neonates with Robin sequence 分离式正畸导气管板:对常规正畸导气管板在Robin序列新生儿使用方法的创新

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2022-04-22 DOI: 10.4041/kjod21.238

H. Choo, Seong-Hun Kim, Hyo-Won Ahn, C. Poets, K. Chung

引用次数: 2

Influence of late removal after treatment on the removal torque of microimplants 治疗后较晚拔除对微种植体拔除力矩的影响

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2022-04-14 DOI: 10.4041/kjod21.217

Ho-Jin Kim, Hyo-sang Park

{"title":"Influence of late removal after treatment on the removal torque of microimplants","authors":"Ho-Jin Kim, Hyo-sang Park","doi":"10.4041/kjod21.217","DOIUrl":"https://doi.org/10.4041/kjod21.217","url":null,"abstract":"Objective To compare the removal torque of microimplants upon post-use removal and post-retention removal and to assess the influencing factors. Methods The sample group included 241 patients (age, 30.25 ± 12.2 years) with 568 microimplants. They were divided into the post-use (microimplants removed immediately after use or treatment) and post-retention (microimplants removed during the retention period) removal groups. The removal torque in both groups was assessed according to sex, age, placement site and method, and microimplant size. Pearson correlation and multiple linear regression analyses were performed for evaluating variables influencing the removal torque. Results The mean period of total in-bone stay of microimplants in the post-retention removal group (1,237 days) was approximately two times longer than that in the post-use removal group (656.28 days). The removal torques in the post-retention removal group (range, 4–5 N cm) were also higher than those in the post-use removal group. The mandible and pre-drilling groups demonstrated higher placement and removal torques than did the maxilla and no-drilling groups, respectively. In the no-drilling post-use removal group, the placement torque and microimplant length positively correlated with the removal torque. In the post-retention removal group, unloading in-bone stay period and microimplant diameter positively correlated with the removal torque in the no-drilling and pre-drilling methods, respectively. Conclusions The removal torques differed according to the orthodontic loading and removal time of microimplants. With prolonged retention of microimplants inserted using the no-drilling method, the removal torque was clinically acceptable and positively correlated with the unloading in-bone stay period.","PeriodicalId":49934,"journal":{"name":"Korean Journal of Orthodontics","volume":"128 1","pages":"201 - 209"},"PeriodicalIF":1.9,"publicationDate":"2022-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75675182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effectiveness of miniscrew assisted rapid palatal expansion using cone beam computed tomography: A systematic review and meta-analysis 锥形束计算机断层扫描辅助快速腭扩张的有效性:系统回顾和荟萃分析

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2022-04-14 DOI: 10.4041/kjod21.256

Patchaya Siddhisaributr, Kornkanok Khlongwanitchakul, N. Anuwongnukroh, S. Manopatanakul, Nita Viwattanatipa

{"title":"Effectiveness of miniscrew assisted rapid palatal expansion using cone beam computed tomography: A systematic review and meta-analysis","authors":"Patchaya Siddhisaributr, Kornkanok Khlongwanitchakul, N. Anuwongnukroh, S. Manopatanakul, Nita Viwattanatipa","doi":"10.4041/kjod21.256","DOIUrl":"https://doi.org/10.4041/kjod21.256","url":null,"abstract":"Objective This study aims to examine the effectiveness of miniscrew assisted rapid palatal expansion (MARPE) treatment in late adolescents and adult patients using cone-beam computed tomography (CBCT). Methods Literature search was conducted in five electronic databases (PubMed, Embase, Scopus, Web of Science, and Cochrane Library) based on the PICOS keyword design focusing on MARPE. Out of the 18 CBCT screened outcomes, only nine parameters were sufficient for the quantitative meta-analysis. The parameters were classified into three main groups 1) skeletal changes, 2) alveolar change, and 3) dental changes. Heterogeneity test, estimation of pooled means, publication bias, sensitivity analysis and risk of bias assessment were also performed. Results Upon database searching, only 14 full-text articles were qualified from the 364 obtained results. Heterogeneity test indicated the use of the random-effects model. The pooled mean estimate were as follows 1) Skeletal expansion zygomatic width, 2.39 mm; nasal width, 2.68 mm; jugular width, 3.12 mm; and midpalatal suture at the posterior nasal spine and anterior nasal spine, 3.34 mm and 4.56 mm, respectively; 2) Alveolar molar width expansion, 4.80 mm; and 3) Dental expansion inter-canine width, 3.96 mm; inter-premolar width, 4.99 mm and inter-molar width, 5.99 mm. The percentage of expansion demonstrated a skeletal expansion (PNS) of 55.76%, alveolar molar width expansion of 24.37% and dental expansion of 19.87%. Conclusions In the coronal view, the skeletal and dental expansion created by MARPE was of the pyramidal pattern. MARPE could successfully expand the constricted maxilla in late adolescents and adult patients.","PeriodicalId":49934,"journal":{"name":"Korean Journal of Orthodontics","volume":"76 1","pages":"182 - 200"},"PeriodicalIF":1.9,"publicationDate":"2022-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88539354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Maxillary space closure using a digital manufactured Mesialslider in a single appointment workflow 上颌空间封闭使用数字制造的Mesialslider在单一预约工作流程

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2022-04-14 DOI: 10.4041/kjod21.203

Lynn Wilhelmy, J. Willmann, N. Tarraf, B. Wilmes, D. Drescher

引用次数: 2

Which anchorage device is the best during retraction of anterior teeth? An overview of systematic reviews 前牙后缩时，哪一种支抗装置效果最好?系统综述

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2022-04-14 DOI: 10.4041/kjod21.153

Yassir A. Yassir, Sarah A. Nabbat, G. McIntyre, D. Bearn

{"title":"Which anchorage device is the best during retraction of anterior teeth? An overview of systematic reviews","authors":"Yassir A. Yassir, Sarah A. Nabbat, G. McIntyre, D. Bearn","doi":"10.4041/kjod21.153","DOIUrl":"https://doi.org/10.4041/kjod21.153","url":null,"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.","PeriodicalId":49934,"journal":{"name":"Korean Journal of Orthodontics","volume":"39 1","pages":"220 - 235"},"PeriodicalIF":1.9,"publicationDate":"2022-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90759045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Conservative orthodontic treatment for severe pathologic migration following total glossectomy: A case report 全舌切除术后严重病理性移位的保守正畸治疗1例

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2022-04-14 DOI: 10.4041/kjod21.215

H. Giap, J. Jeon, K. Kim, Kee-Joon Lee

{"title":"Conservative orthodontic treatment for severe pathologic migration following total glossectomy: A case report","authors":"H. Giap, J. Jeon, K. Kim, Kee-Joon Lee","doi":"10.4041/kjod21.215","DOIUrl":"https://doi.org/10.4041/kjod21.215","url":null,"abstract":"Glossectomy combined with radiotherapy causes different levels of tongue function disorders and leads to severe malocclusion, with poor periodontal status in cancer survivors. Although affected patients require regular access to orthodontic care, special considerations are crucial for treatment planning. This case report describes the satisfactory orthodontic management for the correction of severe dental crowding in a 43-year-old female 6 years after treatment for tongue cancer with total glossectomy combined with radiotherapy, to envision the possibility of orthodontic care for oral cancer survivors. Extraction was performed to correct dental crowding and establish proper occlusion following alignment, after considering the possibility of osteoradionecrosis. Orthodontic mini-implants were used to provide skeletal anchorage required for closure of the extraction space and intrusion of the anterior teeth. The dental crowding was corrected, and Class I occlusal relationship was established after 36 months of treatment. The treatment outcome was sustained after 15 months of retention, and long-term follow-up was recommended.","PeriodicalId":49934,"journal":{"name":"Korean Journal of Orthodontics","volume":"18 1","pages":"298 - 307"},"PeriodicalIF":1.9,"publicationDate":"2022-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89070267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of periodontal parameters and gingival crevicular fluid cytokines in children with anterior open bite receiving passive orthodontic treatment with a spur. 儿童前牙开咬接受被动正畸治疗后牙周参数和龈沟液细胞因子的评价。

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2022-03-25 DOI: 10.4041/kjod.2022.52.2.142

Gabriel Antônio Dos Anjos Tou, Ivana Márcia Alves Diniz, Marcus Vinicius Lucas Ferreira, Ricardo Alves de Mesquita, Mônica Yamauti, Tarcília Aparecida Silva, Soraia Macari

{"title":"Evaluation of periodontal parameters and gingival crevicular fluid cytokines in children with anterior open bite receiving passive orthodontic treatment with a spur.","authors":"Gabriel Antônio Dos Anjos Tou, Ivana Márcia Alves Diniz, Marcus Vinicius Lucas Ferreira, Ricardo Alves de Mesquita, Mônica Yamauti, Tarcília Aparecida Silva, Soraia Macari","doi":"10.4041/kjod.2022.52.2.142","DOIUrl":"https://doi.org/10.4041/kjod.2022.52.2.142","url":null,"abstract":"Objective: To evaluate clinical parameters and gingival crevicular fluid (GCF) cytokines in children with anterior open bite receiving passive orthodontic treatment with spurs.Methods: Twenty children with indications for interceptive orthodontic treatment, an anterior open bite, and good oral hygiene and periodontal health were included in this study. GCF samples were collected from the mandibular and maxillary central incisors before (baseline) and 24 hours and 7 days after spur bonding. Clinical and periodontal examinations and cytokine analyses were performed.Results: At 7 days after spur attachment, gingival bleeding in the mandibular group was increased relative to that in the maxillary group. Visible plaque was correlated with gingival bleeding at 7 days and the GCF volume at 24 hours after spur attachment. Compared with those at baseline, interleukin (IL)-8 levels in the maxillary group and IL-1β levels in both tooth groups increased at both 24 hours and 7 days and at 7 days, respectively. At 24 hours, IL-8, IL-1β, and IL-6 levels were higher in the maxillary group than in the mandibular group. Cytokine production was positively correlated with increased GCF volume, but not with gingival bleeding, visible plaque, or probing depth.Conclusions: Although orthodontic treatment with spurs in children resulted in increased gingival bleeding around the mandibular incisors, IL levels were higher around the maxillary incisors and not correlated with periodontal parameters. Increased cytokine levels in GCF may be associated with the initial tooth movement during open bite correction with a passive orthodontic appliance in children.","PeriodicalId":49934,"journal":{"name":"Korean Journal of Orthodontics","volume":"52 2","pages":"142-149"},"PeriodicalIF":1.9,"publicationDate":"2022-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ac/16/kjod-52-2-142.PMC8964467.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40318082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

FAREWELL EDITORIAL. 告别编辑。

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2022-03-25 DOI: 10.4041/kjod.2022.52.2.81

Hyoung-Seon Baik

引用次数: 0

Differences in dentoskeletal and soft tissue changes due to rapid maxillary expansion using a tooth-borne expander between adolescents and adults: A retrospective observational study. 青少年和成人使用牙载扩张器快速上颌扩张后牙骨骼和软组织变化的差异:一项回顾性观察研究。

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2022-03-25 DOI: 10.4041/kjod.2022.52.2.131

Jung-Sub An, Bo-Yeon Seo, Sug-Joon Ahn

{"title":"Differences in dentoskeletal and soft tissue changes due to rapid maxillary expansion using a tooth-borne expander between adolescents and adults: A retrospective observational study.","authors":"Jung-Sub An, Bo-Yeon Seo, Sug-Joon Ahn","doi":"10.4041/kjod.2022.52.2.131","DOIUrl":"https://doi.org/10.4041/kjod.2022.52.2.131","url":null,"abstract":"Objective: The purpose of this study was to compare the differences in dentoskeletal and soft tissue changes following conventional tooth-borne rapid maxillary expansion (RME) between adolescents and adults.Methods: Dentoskeletal and soft tissue variables of 17 adolescents and 17 adults were analyzed on posteroanterior and lateral cephalograms and frontal photographs at pretreatment (T1) and after conventional RME using tooth-borne expanders (T2). Changes in variables within each group between T1 and T2 were analyzed using Wilcoxon signed-rank test. Mann-Whitney U test was used to determine the differences in the pretreatment age, expansion and post-expansion durations, and dentoskeletal and soft tissue changes after RME between the groups. Spearman's correlation between pretreatment age and transverse dentoskeletal changes in the adolescent group was calculated.Results: Despite similar amounts of expansion at the crown level in both groups, the adult group underwent less skeletal expansion with less intermolar root expansion after RME than the adolescent group. The skeletal vertical dimension increased significantly in both groups without significant intergroup difference. The anteroposterior position of the maxilla was maintained in both groups, while a greater backward displacement of the mandible was evident in the adult group than that in the adolescent group after RME. The soft tissue alar width increased in both groups without a significant intergroup difference. In the adolescent group, pretreatment age was not significantly correlated with transverse dentoskeletal changes.Conclusions: Conventional RME may induce similar soft tissue changes but different dentoskeletal changes between adolescents and adults.","PeriodicalId":49934,"journal":{"name":"Korean Journal of Orthodontics","volume":"52 2","pages":"131-141"},"PeriodicalIF":1.9,"publicationDate":"2022-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/8b/4c/kjod-52-2-131.PMC8964468.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40318081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5