Korean Journal of Orthodontics最新文献

{"title":"Evaluation of different designs of 3D printed clear aligners on mandibular premolar extrusion using force/moment measurement devices and digital image correlation method.","authors":"Jong-Chan Baik, Youn-Kyung Choi, Yonghun Cho, Yunju Baek, Sung-Hun Kim, Seong-Sik Kim, Soo-Byung Park, Ki Beom Kim, Yong-Il Kim","doi":"10.4041/kjod24.016","DOIUrl":"10.4041/kjod24.016","url":null,"abstract":"<p><strong>Objective: </strong>This study aimed to investigate the effect of three-dimensional (3D) printed clear aligners (CA) with different designs on the extrusion of mandibular premolars using a force/moment measurement system and digital image correlation (DIC).</p><p><strong>Methods: </strong>The forces and moments applied to the mandibular canines, first and second premolars were measured using a multi-axis force/moment transducer when an extrusion of 0.5 mm was planned, assuming the mandibular first premolars were intruded by 1 mm. In addition, displacement and strain changes in the CA were analyzed using the DIC method. CA designs were categorized based on the presence of first premolar attachment and subdivided into equigingival margins, 1-mm extended margins, equi-margins with 1-mm thickness and height, and equi-margins with 1-mm reduced buccolingual width. The CA was printed directly at a thickness of 0.5 mm, and the experiments were conducted at 37°C.</p><p><strong>Results: </strong>The results showed that attachment played an important role in the extrusion of first premolars in both the force/moment measurement system and the DIC method. Intrusion was observed without attachment, even though extrusion was planned. CA designs apply greater force to the cervical region by extending the margin or reducing the buccolingual width, thereby improving extrusion efficiency.</p><p><strong>Conclusions: </strong>Force and moment changes in direct 3D printed CA are complex and difficult to predict; however, modifying aligner designs, such as extending the margin or reducing buccolingual width, and using appropriate attachments could minimize unwanted tooth movement, optimize planned treatment, and increase treatment predictability.</p>","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":"54 6","pages":"359-373"},"PeriodicalIF":2.6,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11602254/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142711756","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}

{"title":"Comparison of the predicted and achieved labiolingual inclinations of the maxillary central incisors in adult Class II division 2 malocclusions treated with clear aligners.","authors":"Mariam Al-Samman, Mais Sadek, Ahmad M Hamdan","doi":"10.4041/kjod24.093","DOIUrl":"10.4041/kjod24.093","url":null,"abstract":"<p><strong>Objective: </strong>This study aimed to compare the predicted and achieved labiolingual inclinations of the maxillary central incisors in adult Class II division 2 malocclusions treated with clear aligners using Power Ridges^® and composite attachments.</p><p><strong>Methods: </strong>This retrospective study included 24 patients (mean age, 26.5 ± 3.3 years). The patients had Class II division 2 malocclusion and were treated with non-extraction with Invisalign^® clear aligners with either Power Ridges^® or composite attachments to enhance the predictability of required change in labiolingual inclination for the maxillary central incisors. Before treatment, treatment prediction and final digital models were exported as stereolithography files and superimposed using the eModel 9.0 \"Compare\" software. The predicted and achieved labiolingual incisor inclinations were compared.</p><p><strong>Results: </strong>The mean accuracies of the achieved inclination of the central incisors were 68.3% in the Power Ridges^® group and 71.6% in the attachments group. No statistically significant differences in predictability were found between the groups (<i>P</i> > 0.05). A low positive correlation was observed between the predicted inclination change and the average absolute difference between the predicted and achieved inclinations (r = 0.19).</p><p><strong>Conclusions: </strong>Predicted labiolingual inclination is not fully achieved with clear aligners in both the Power Ridges^® and attachment groups. Clinicians must take measures to counteract this limitation, specifically in Class II division 2 cases.</p>","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":"54 6","pages":"403-410"},"PeriodicalIF":2.6,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11602257/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142711742","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}

{"title":"Evaluation of condylar dimension and position following rapid maxillary expansion with tooth- or tooth-bone-borne appliances.","authors":"Merve Nur Eglenen, Seden Akan, Derya Germec-Cakan","doi":"10.4041/kjod24.142","DOIUrl":"10.4041/kjod24.142","url":null,"abstract":"<p><strong>Objective: </strong>To assess and compare changes in the dimension and position of the mandibular condyle after tooth-borne (Hyrax) and tooth-bone-borne (Hybrid Hyrax) expansion.</p><p><strong>Methods: </strong>Twenty-five patients who underwent expansion with either tooth-borne appliances (8 girls, 5 boys; mean age 14.3 ± 2.3 years) or tooth-bone-borne appliances (6 girls, 6 boys; mean age 13.8 ± 2.2 years) were examined. Condylar and glenoid fossa morphology before (T0) and 3 months after (T1) expansion were evaluated using cone-beam computed tomography. Condylar measurements (anterior, posterior, and superior joint spaces; condylar height, length, and width), along with sagittal and vertical skeletal and maxillary transversal measurements, were analyzed using Dolphin Imaging software. Wilcoxon and Paired <i>t</i> tests were used for T0 and T1 evaluations, and the Mann-Whitney <i>U</i> test for intergroup comparisons.</p><p><strong>Results: </strong>At both T0 and T1, no statistically significant differences were observed between the groups in terms of condylar dimensions or the position of the condyle within the glenoid fossa. Maxillary transversal measurements increased after expansion in both groups (<i>P</i> < 0.01), with a significantly greater increase in first premolar width in the Hyrax group (<i>P</i> < 0.05). The vertical position of the posterior teeth showed no noteworthy changes (<i>P</i> > 0.05), except for the right second premolar. Temporomandibular joint measurements did not significantly change in either group after treatment (<i>P</i> > 0.05).</p><p><strong>Conclusions: </strong>Neither tooth-borne nor tooth-bone-borne expansion caused significant changes in the condylar dimensions and position at the end of treatment.</p>","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":"54 6","pages":"422-431"},"PeriodicalIF":2.6,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11602252/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142711753","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}

{"title":"Preliminary study of environmental risk and protective factors during pregnancy for cleft lip with or without palate in the Korean population.","authors":"Min-Jeong Kang, Nang Paung Li, Hyunseung Hong, Hyo-Sang Park, Ji Wan Park, Marie M Tolarova, Il-Hyung Yang, Mihee Hong, Seung-Hak Baek","doi":"10.4041/kjod24.137","DOIUrl":"10.4041/kjod24.137","url":null,"abstract":"<p><strong>Objective: </strong>To investigate which types of environmental exposure during pregnancy are risk and protective factors for cleft lip with or without cleft palate (CL/P).</p><p><strong>Methods: </strong>This case-control study included 278 orthodontic patients with CL/P (CL/P group) and 51 without CL/P (non-CL/P group). Demographic and environmental exposure data were collected using questionnaires completed by the parents. Statistical analyses were performed to identify the potential risk and protective factors for CL/P.</p><p><strong>Results: </strong>The two groups did not show significant difference in (1) body weight at birth and number of previous births; (2) fathers' ages at birth and occupation; (3) parents' chronic diseases, alcohol consumption, and exposure to harmful substances; and (4) mothers' smoking, secondhand smoking, and vitamin and calcium intake. Most patients with CL/P were born at normal term (≥ 37 weeks, 93.2%) with normal body weight (2.9-3.7 kg, 63.7%) and as either the first or second child (90.3%). In the CL/P group, the percentages of mothers who were very young or old (≤ 19 years, ≥ 40 years) and with physical labor in their occupation were low (1.8% and 2.2%, respectively). Compared with the non-CL/P group, the CL/P group showed a lower percentage of maternal folic acid intake (68.6% vs. 20.9%, odds ratio [OR] = 0.121; <i>P</i> < 0.001) and higher percentages of mothers' drug intake and fathers' smoking habits (3.9% vs. 16.2%, OR = 4.73, <i>P</i> < 0.05; 39.2% vs. 61.2%, OR = 2.44, <i>P</i> < 0.01).</p><p><strong>Conclusions: </strong>The findings of this study may explain the association between environmental factors and CL/P risk.</p>","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":"54 6","pages":"411-421"},"PeriodicalIF":2.6,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11602255/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142711774","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}

{"title":"Genetic polymorphisms in external apical root resorption and orthodontic tooth movements: A systematic review.","authors":"Ana Luiza Cabral de Ávila Andrade, Yasmin Dias de Almeida Pinto, Bernardo Emerenciano Barros Maia, Joice Dias Corrêa, Diogo de Azevedo Miranda, Flávio Ricardo Manzi, Izabella Lucas de Abreu Lima","doi":"10.4041/kjod24.030","DOIUrl":"10.4041/kjod24.030","url":null,"abstract":"<p><strong>Objective: </strong>External apical root resorption (EARR) is characterized by permanent loss of dental structure at the root apex. This study aimed to systematically review gene polymorphisms associated with EARR in orthodontic patients.</p><p><strong>Methods: </strong>Electronic database searches were performed across several databases.</p><p><strong>Results: </strong>This systematic review included 21 studies. Outcome measures were based on tooth dimensions observed on radiographs obtained before and after treatment. Polymorphisms in the following genes were genotyped using polymerase chain reaction-restriction fragment length polymorphism analysis: purinergic-receptor-P2X, ligand-gated ion channel 7 (<i>P2RX7</i>), caspase-1/interleukin-converting enzyme (<i>CASP1</i>/<i>ICE</i>), caspase-5 (<i>CASP5</i>), IL-1beta (<i>IL1B</i>), IL-1alpha (<i>IL1A</i>), interleukin-1 receptor antagonist gene (<i>IL1RN</i>), tissue non-specific alkaline phosphatase (<i>TNSALP</i>), tumor necrosis factor-alpha (<i>TNFα</i>), tumor necrosis factor receptor superfamily gene member 11a (<i>TNFRSF11A</i>), secreted phosphoprotein 1 (<i>SPP1</i>), tumor necrosis factor receptor superfamily gene member 11b (<i>TNFRSF11B</i>), interleukin 17A (<i>IL17</i>), interleukin 6 (<i>IL6</i>), receptor activator of nuclear factor-kappa B (<i>RANK</i>), osteoprotegerin (<i>OPG</i>), stromal antigen 2 (<i>STAG2</i>), vitamin D receptor (<i>VDR</i>), cytochrome P450 family 24 subfamily A member 1 (<i>CYP24A1</i>), cytochrome P450 family 27 subfamily B (<i>CYP27B1</i>), group-specific component (<i>GC</i>), and interleukin-1 receptor-associated kinases 1 (<i>IRAK1</i>).</p><p><strong>Conclusions: </strong>Almost all studies suggested that IL1 gene is associated with EARR. Additionally, <i>P2RX7</i> may be an important factor contributing to the etiopathogenesis of EARR. <i>TNFRSF11A</i>, <i>SPP1</i>, <i>IL1RN</i>, <i>IL6</i>, <i>TNFRSF11B</i>, <i>STAG2</i>, <i>VDR</i>, <i>IRAK1</i>, <i>IL-17</i>, <i>CASP1</i>/<i>ICE</i> and <i>CASP5</i> have been identified in isolated studies. Further observational studies are needed to better explain the association between these genes and EARR.</p>","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":" ","pages":"284-302"},"PeriodicalIF":2.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11422680/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142005805","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}

{"title":"Correlations of temporomandibular joint morphology and position using cone-beam computed tomography and dynamic functional analysis in orthodontic patients: A cross-sectional study.","authors":"Bin Xu, Jung-Jin Park, Seong-Hun Kim","doi":"10.4041/kjod24.089","DOIUrl":"https://doi.org/10.4041/kjod24.089","url":null,"abstract":"<p><strong>Objective: </strong>To correlate temporomandibular joint (TMJ) morphology and position with cone-beam computed tomography (CBCT) images, Joint Vibration Analysis (JVA), and Jaw Tracker (JT) to develop a radiation-free, dynamic method for screening and monitoring the TMJ in orthodontic patients.</p><p><strong>Methods: </strong>A total of 236 orthodontic patients without symptoms of TMJ disorders who had undergone CBCT were selected for the JVA and JT tests in this cross-sectional study. TMJ position and morphology were measured using a three-dimensional analysis software. JT measurements involved six opening-closing cycles, and JVA measurements were performed using a metronome to guide the mouth opening-closing movements of the patients. The correlations among the three measuring devices were evaluated.</p><p><strong>Results: </strong>Abnormalities in condylar surface morphology affected the mandibular range of motion. The cut-off value results show that when various measurement groups are within a certain range, abnormalities may be observed in morphology (area under the curve, 0.81; <i>P</i> < 0.001). A 300/< 300 Hz ratio ≥ 0.09 suggested abnormal morphology (<i>P</i> < 0.05). Correlations were observed among the maximum opening velocity, maximum vertical opening position, and joint spaces in the JT measurements. Correlations were also observed between the > 300/< 300 Hz ratio, median frequency, total integral, integral < 300 Hz, and peak frequency with joint spaces in the JVA measurements.</p><p><strong>Conclusions: </strong>JT and JVA may serve as rapid, non-invasive, and radiation-free dynamic diagnostic tools for monitoring and screening TMJ abnormalities before and during orthodontic treatment.</p>","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":"54 5","pages":"325-341"},"PeriodicalIF":2.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11422681/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142331986","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}

{"title":"Upper airway dimensions and craniofacial morphology: A correlation study using cone beam computed tomography.","authors":"Ana Rita da Rocha Martins de Carvalho, Maria Cristina Figueiredo Pollmann, Eugénio Joaquim Pereira Martins","doi":"10.4041/kjod23.206","DOIUrl":"10.4041/kjod23.206","url":null,"abstract":"<p><strong>Objective: </strong>To determine the correlation between dentoskeletal parameters related to craniofacial morphology and the upper airway (UA) volume.</p><p><strong>Methods: </strong>Cone-beam computed tomography images of 106 randomly selected orthodontic patients were analyzed using NemoFab Ortho software. The dentoskeletal variables assessed were anterior facial height (AFH), posterior facial height (PFH), PFH/AFH ratio, hyoid position, maxillary width (MW), and palatal depth. The UA volume (evaluation in anatomical regions and as a whole) was also assessed using the same software. We also evaluated potential differences in UA variables between age and sex groups. The correlation between the dentoskeletal parameters and UA volume was calculated using the Pearson correlation coefficient (R). Analysis of variance and Student's t test were performed to assess differences between age and sex for UA variables. Statistical analyses were performed using SPSS software (version 26 for Windows).</p><p><strong>Results: </strong>This study found that PFH, AFH, and MW were the dentoskeletal parameters most strongly correlated with UA volume. However, the ANB angle did not show any significant correlation with UA volume. Additionally, differences in UA volumes were observed between age groups. Sex differences were found in both the \"8-12\" and \"≥ 16\" age groups for oropharyngeal and pharyngeal volumes.</p><p><strong>Conclusions: </strong>In conclusion, our findings indicate a significant correlation between UA volume and dentoskeletal parameters, particularly those related to facial height and MW.</p>","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":" ","pages":"274-283"},"PeriodicalIF":2.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11422678/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141918062","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}

{"title":"Dentoalveolar effects of open-bite correction with the dual action vertical intra-arch technique: A finite element analysis.","authors":"Sérgio Estelita Barros, Kelly Chiqueto, Franciele Alberton, Katherine Jaramillo Cevallos, Juliana Faria, Bianca Heck, Leonardo Machado, Pedro Noritomi","doi":"10.4041/kjod23.261","DOIUrl":"10.4041/kjod23.261","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate tooth displacement and periodontal stress generated by the dual action vertical intra-arch technique (DAVIT) for open-bite correction using three-dimensional finite element analysis.</p><p><strong>Methods: </strong>A three-dimensional model of the maxilla was created by modeling the cortical bone, cancellous bone, periodontal ligament, and teeth from the second molar to the central incisor of a hemiarch. All orthodontic devices were designed using specific software to reproduce their morpho-dimensional characteristics, and their physical properties were determined using Young's modulus and Poisson's coefficient of each material. A linear static simulation was performed to analyze the tooth displacements (mm) and maximum stresses (Mpa) induced in the periodontal ligament by the posterior intrusion and anterior extrusion forces generated by the DAVIT.</p><p><strong>Results: </strong>The first and second molars showed the greatest intrusion, whereas the canines and lateral incisors showed the greatest extrusion displacement. A neutral zone of displacement corresponding to the fulcrum of occlusal plane rotation was observed in the premolar region. Buccal tipping of the molars and lingual tipping of the anterior teeth occurred with intrusion and extrusion, respectively. Posterior intrusion generated compressive stress at the apex of the buccal roots and furcation of the molars, while anterior extrusion generated tensile stress at the apex and apical third of the palatal root surface of the incisors and canines.</p><p><strong>Conclusions: </strong>DAVIT mechanics produced a set of beneficial effects for open-bite correction, including molar intrusion, extrusion and palatal tipping of the anterior teeth, and occlusal plane rotation with posterior teeth uprighting.</p>","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":" ","pages":"316-324"},"PeriodicalIF":2.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11422677/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142037652","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}

{"title":"Finite element analysis of the effects of different archwire forms and power arm positions on maxillary incisors in <i>en masse</i> retraction using fixed lingual orthodontic appliances.","authors":"Hilal Tarkan, Ihsan Sami Guvenc","doi":"10.4041/kjod23.196","DOIUrl":"10.4041/kjod23.196","url":null,"abstract":"<p><strong>Objective: </strong>This study aimed to investigate the effects of archwire form and power arm positions on maxillary incisors during lingual <i>en masse</i> retraction supported by miniscrew implants, using the finite element analysis method.</p><p><strong>Methods: </strong>Sliding mechanics for lingual <i>en masse</i> retraction were simulated using the finite element method. Power arms were placed mesial and distal to the maxillary canine with straight and mushroom-shaped archwires. Miniscrews provided absolute anchorage for retraction force.</p><p><strong>Results: </strong>When power arms were positioned mesial to the canine teeth, an increase in the intercanine distance was observed, while a decrease was noted when the power arms were distal to the canine tooth. Lateral incisors exhibited a greater torque loss, particularly when the power arm was mesial to the canine tooth. In the central incisors, the mushroom archwire resulted in intrusion, while the straight archwire showed an extrusion tendency. Movements in groups using the straight archwire were less controlled compared to those in groups using the mushroom archwire.</p><p><strong>Conclusions: </strong>The archwire form and the position of the power arm affected the torque loss and vertical position of incisors during lingual <i>en masse</i> retraction supported by miniscrew implants. The most controlled movement was achieved with the combination of a power arm positioned distal to the canine tooth and a mushroom archform.</p>","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":" ","pages":"265-273"},"PeriodicalIF":2.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11422679/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141762455","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}

{"title":"Effectiveness of autologous leukocyte-platelet-rich fibrin on the rate of maxillary canine retraction, rotation, pain, and soft tissue healing: A split-mouth randomized controlled trial.","authors":"Subrat Kumar Satapathy, Surya Kanta Das, Ashish Kumar Barik, Devpartim Mohanty, Sunil Kumar Rath, Mitali Mishra","doi":"10.4041/kjod23.112","DOIUrl":"https://doi.org/10.4041/kjod23.112","url":null,"abstract":"<p><strong>Objective: </strong>To assess the effectiveness of leukocyte-platelet-rich fibrin (L-PRF) compared with conventional treatment on canine retraction, rotation, pain, and soft tissue healing.</p><p><strong>Methods: </strong>Sixteen adult patients aged 18-25 years (10 females, and 6 males; mean age 22.25 ± 2.26 years) with Class I bimaxillary protrusion and Class II div 1 malocclusion participated in this single-center, split-mouth randomized controlled trial at the Orthodontics Department of a single hospital in SCB Dental College and Hospital, Cuttack, India. Randomization was performed using a computer-assisted function with a 1:1 allocation ratio. The intervention included the placement of L-PRF on the experimental side and follow-up for 90 days. The primary outcome measures were canine retraction, rotation, pain, and soft tissue healing. The range of tooth movement was evaluated at 15-day intervals: 0th day (T0), 15th day (T1), 30th day (T2), 45th day (T3), 60th day (T4), 75th day (T5), and 90th day (T6). Canine rotation was assessed at T0 and T6, and pain and soft tissue healing were evaluated on the 3rd, 7th, and 15th days of the treatment.</p><p><strong>Results: </strong>Cumulatively, the L-PRF group demonstrated a significantly greater tooth movement as compared to conventional treatment group (<i>P</i> < 0.001). Overall, canine retraction was 1.5 times greater on the L-PRF side than on the control side. Canine rotation showed no significant relationship, whereas pain and soft tissue healing were significantly better on the L-PRF side than on the control side.</p><p><strong>Conclusions: </strong>Local administration of L-PRF amplifies canine retraction while improving pain and soft tissue repair.</p>","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":"54 5","pages":"303-315"},"PeriodicalIF":2.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11422682/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142331987","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}