Korean Journal of Orthodontics最新文献_第7页

Biomechanical analysis for different mandibular total distalization methods with clear aligners: A finite element study. 不同下颌全远端矫正器的生物力学分析:一项有限元研究。

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2023-11-25 Epub Date: 2023-09-14 DOI: 10.4041/kjod23.035

Sewoong Oh, Youn-Kyung Choi, Sung-Hun Kim, Ching-Chang Ko, Ki Beom Kim, Yong-Il Kim

{"title":"Biomechanical analysis for different mandibular total distalization methods with clear aligners: A finite element study.","authors":"Sewoong Oh, Youn-Kyung Choi, Sung-Hun Kim, Ching-Chang Ko, Ki Beom Kim, Yong-Il Kim","doi":"10.4041/kjod23.035","DOIUrl":"10.4041/kjod23.035","url":null,"abstract":"Objective: : The purpose of this finite element method (FEM) study was to analyze the biomechanical differences and tooth displacement patterns according to the traction direction, methods, and sites for total distalization of the mandibular dentition using clear aligner treatment (CAT).Methods: : A finite element analysis was performed on four FEM models using different traction methods (via a precision cut hook or button) and traction sites (mandibular canine or first premolar). A distalization force of 1.5 N was applied to the traction site by changing the direction from -30 to +30° to the occlusal plane. The initial tooth displacement and von Mises stress on the clear aligners were analyzed.Results: : All CAT-based total distalization groups showed an overall trend of clockwise or counterclockwise rotation of the occlusal plane as the force direction varied. Mesiodistal tipping of individual teeth was more prominent than that of bodily movements. The initial displacement pattern of the mandibular teeth was more predominant based on the traction site than on the traction method. The elastic deformation of clear aligners is attributed to unintentional lingual tipping or extrusion of the mandibular anterior teeth.Conclusions: : The initial tooth displacement can vary according to different distalization strategies for CAT-based total distalization. Discreet application and biomechanical understanding of traction sites and directions are necessary for appropriate mandibular total distalization.","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":"53 6","pages":"420-430"},"PeriodicalIF":1.9,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10663580/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138292295","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: 0

Managing oral biofilms to avoid enamel demineralization during fixed orthodontic treatment. 固定正畸治疗中处理口腔生物膜，避免牙釉质脱矿。

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2023-11-25 Epub Date: 2023-09-15 DOI: 10.4041/kjod23.184

Jung-Sub An, Bum-Soon Lim, Sug-Joon Ahn

引用次数: 0

Periodontal health status, oral microbiome, white-spot lesions and oral health related to quality of life-clear aligners versus fixed appliances: A systematic review, meta-analysis and meta-regression. 与生活质量相关的牙周健康状况、口腔微生物群、白斑病变和口腔健康:一项系统综述、荟萃分析和荟萃回归

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2023-11-25 Epub Date: 2023-09-05 DOI: 10.4041/kjod22.272

Ana Sandra Llera-Romero, Milagros Adobes-Martín, José Enrique Iranzo-Cortés, José Maria Montiel-Company, Daniele Garcovich

{"title":"Periodontal health status, oral microbiome, white-spot lesions and oral health related to quality of life-clear aligners versus fixed appliances: A systematic review, meta-analysis and meta-regression.","authors":"Ana Sandra Llera-Romero, Milagros Adobes-Martín, José Enrique Iranzo-Cortés, José Maria Montiel-Company, Daniele Garcovich","doi":"10.4041/kjod22.272","DOIUrl":"10.4041/kjod22.272","url":null,"abstract":"Objective: : Assess and evaluate the different indicators of oral health-related quality of life (OHRQoL) among patients treated with clear aligners (CAs) versus those treated with conventional fixed orthodontics (FAs).Methods: : An electronic search was performed on the database is Web of Science, Scopus, and Embase databases. Randomized and non-randomized control trials, cross-sectional, prospective cohort and retrospective trials were included. Quality was assessed with risk of bias tool and risk of bias in non-randomised studies. Meta-analyses were performed with random effects models, estimating the standardized and non-standardized mean differences, odds ratio and risk ratio as the measure of effect. The effect on time was determined using a meta-regression model.Results: : Thirty one articles were included in the qualitative synthesis and 17 in the meta-analysis. CAs had a significantly lower negative impact on QoL, with an \"important\" effect size, while the influence of time was not significant. Periodontal indicators plaque index (PI), gingival index (GI), probing depth (PD), and bleeding on probing show significantly better values in patients treated with CAs, with moderate to large effect sizes. PI and GI have a significant tendency to improve over time. In microbiological indicators, CAs present a lower biofilm mass without differences in the percentage of patients with high counts of Streptococcus mutans and Lactobacilli bacteria. The risk of white spot lesion onset is ten times lower in carriers of CAs.Conclusions: : Patients wearing CAs show better periodontal indicators, less risk of white spot development, less biofilm mass and a better QoL than patients with FAs.","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":"53 6","pages":"374-392"},"PeriodicalIF":1.9,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10663575/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138292314","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: 0

Three-dimensional evaluation of the pharyngeal airway space in patients with anterior open bite. 前开咬患者咽部气道间隙的三维评价。

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2023-11-25 Epub Date: 2023-01-31 DOI: 10.4041/kjod22.187

Seong-Sik Kim, Yong-Il Kim, Soo-Byung Park, Sung-Hun Kim

{"title":"Three-dimensional evaluation of the pharyngeal airway space in patients with anterior open bite.","authors":"Seong-Sik Kim, Yong-Il Kim, Soo-Byung Park, Sung-Hun Kim","doi":"10.4041/kjod22.187","DOIUrl":"10.4041/kjod22.187","url":null,"abstract":"Objective: : This study aimed to three-dimensionally evaluate the pharyngeal airway space (PAS) of patients with anterior open bite (AOB) by using cone-beam computed tomography (CBCT) and compare the findings with those obtained in individuals with normal occlusion.Methods: : The open bite group (OBG, n = 25) consisted of patients with an anterior overbite of -3 mm or less, while the control group (n = 25) consisted of age- and sex-matched individuals with an anterior overbite of 1-3 mm, Angle Class I malocclusion (1° ≤ point A-nasion-point B angle ≤ 4°), and a normodivergent profile (22° ≤ Frankfort mandibular plane angle ≤ 28°). After the CBCT data were reconstructed into a three-dimensional image, the PAS was segmented into four parts, and the volume of each part was measured. Pharyngeal airway length (PAL) and the area and transverse width of the part showing minimal constriction were also measured. Pearson's correlation analysis was used to evaluate the correlation between changes in the PAS and the amount of anterior overbite.Results: : The OBG showed a significantly narrower airway space in the nasopharyngeal, hypopharyngeal, and total airway volumes. The OBG also showed a significantly smaller area and transverse width of the part with minimal constriction. The OBG showed a significantly longer PAL, but there was no correlation between the amount of anterior overbite and the changes in PAS.Conclusions: : The PAS was associated with AOB. Patients with AOB had a narrower PAS and a smaller part showing minimal constriction.","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":" ","pages":"358-364"},"PeriodicalIF":1.9,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10663578/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10641246","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

READER'S FORUM. 读者的论坛。

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2023-11-25 DOI: 10.4041/kjod53.0006RF

Hyo-Won Ahn

引用次数: 0

Pattern of microimplant displacement during maxillary skeletal expander treatment: A cone-beam computed tomography study. 上颌骨扩张器治疗期间微型植入物移位模式：锥形束计算机断层扫描研究。

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2023-09-25 Epub Date: 2023-09-05 DOI: 10.4041/kjod23.056

Ney Paredes, Ausama Gargoum, Ramon Dominguez-Mompell, Ozge Colak, Joseph Bui, Tam Duong, Maya Giannetti, Fernanda Silva, Kendra Brooks, Won Moon

{"title":"Pattern of microimplant displacement during maxillary skeletal expander treatment: A cone-beam computed tomography study.","authors":"Ney Paredes, Ausama Gargoum, Ramon Dominguez-Mompell, Ozge Colak, Joseph Bui, Tam Duong, Maya Giannetti, Fernanda Silva, Kendra Brooks, Won Moon","doi":"10.4041/kjod23.056","DOIUrl":"10.4041/kjod23.056","url":null,"abstract":"Objective: To analyze the microimplant (MI) displacement pattern on treatment with a maxillary skeletal expander (MSE) using cone-beam computed tomography (CBCT).Methods: Thirty-nine participants (12 males and 27 females; mean age, 18.2 ± 4.2 years) were treated successfully with the MSE II appliance. Their pre- and post-expansion CBCT data were superimposed. The pre- and post-expansion anterior and posterior inter-MI angles, neck and apical inter-MI distance, plate angle, palatal bone thickness at the MI positions, and suture opening at the MI positions were measured and compared.Results: The jackscrew plate was slightly bent in both anterior and posterior areas. There was no significant difference in the extent of suture opening between the anterior and posterior MIs (p > 0.05). The posterior MI to hemiplate line was greater than that anteriorly (p < 0.05). The apical distance between the posterior MIs was greater than that anteriorly (p < 0.05). The palatal thickness at the anterior MIs was significantly greater than that posteriorly (p > 0.01).Conclusions: In the coronal plane, the angulation between the anterior MIs in relation to the jackscrew plate was greater than that between the posterior MIs owing to the differential palatal bone thickness.","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":" ","pages":"289-297"},"PeriodicalIF":1.9,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/3e/56/kjod-53-5-289.PMC10547596.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10507749","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: 0

Evaluation of pain experienced by orthodontic patients following elastomeric separator insertion: A cross-sectional study. 正畸患者插入弹性隔离物后疼痛的评估：一项横断面研究。

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2023-09-25 DOI: 10.4041/kjod22.257

Hareem Sultan, Hana Pervez, Sidra Maqsood, Wajeeh Syed Zeeshan

{"title":"Evaluation of pain experienced by orthodontic patients following elastomeric separator insertion: A cross-sectional study.","authors":"Hareem Sultan, Hana Pervez, Sidra Maqsood, Wajeeh Syed Zeeshan","doi":"10.4041/kjod22.257","DOIUrl":"https://doi.org/10.4041/kjod22.257","url":null,"abstract":"Objective Pain following the insertion of separators and archwires varies with age, sex, race, ethnicity, threshold, and health status. This study aimed to evaluate the characteristics of pain in orthodontic patients after the insertion of elastomeric separators, its effects on daily life, and its association with age and sex in a population not previously studied in this regard. Methods A cross-sectional study of 130 patients undergoing orthodontic treatment included collecting data on demographics, pain experienced following the placement of separators, time of onset, duration, characteristics, change in dietary pattern or chewing side, intake of analgesics, and severity of pain on the Wong Baker’s scale. The results are reported as counts and percentages. Associations between sex and age were evaluated using Pearson’s chi-square test. Results Among the 130 patients, 56.2% were 9–20 years old, 63.8% experienced pain following the insertion of separators, 22.9% had their first episode of pain at 4 hours, 56.6% experienced intermittent pain, and 37.3% experienced discomfort; 18.1% males and 81.9% females experienced pain following the insertion of separators. Pearson’s chi-square test showed a significant association between pain and sex (P = 0.04). Most patients (37.3%) reported “hurts little more” for pain intensity on Wong Baker’s scale and 21.7% reported all four quadrants as sites of pain. Conclusions The pain experienced after separator insertion was associated with sex and age. Females experienced more pain than males and patients between the age range of 21 and 36 years suffered more pain during mastication than between 9 and 20 years old.","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":"53 5","pages":"298-306"},"PeriodicalIF":1.9,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/e7/d3/kjod-53-5-298.PMC10547595.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41123356","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

Three-dimensional evaluation of the association between tongue position and upper airway morphology in adults: A cross-sectional study. 成人舌头位置和上呼吸道形态之间关系的三维评估：一项横断面研究。

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2023-09-25 DOI: 10.4041/kjod23.019

Yuchen Zheng, Hussein Aljawad, Min-Seok Kim, Su-Hoon Choi, Min-Soo Kim, Min-Hee Oh, Jin-Hyoung Cho

{"title":"Three-dimensional evaluation of the association between tongue position and upper airway morphology in adults: A cross-sectional study.","authors":"Yuchen Zheng, Hussein Aljawad, Min-Seok Kim, Su-Hoon Choi, Min-Soo Kim, Min-Hee Oh, Jin-Hyoung Cho","doi":"10.4041/kjod23.019","DOIUrl":"https://doi.org/10.4041/kjod23.019","url":null,"abstract":"Objective: This study aimed to evaluate the association between low tongue position (LTP) and the volume and dimensions of the nasopharyngeal, retropalatal, retroglossal, and hypopharyngeal segments of the upper airway.Methods: A total of 194 subjects, including 91 males and 103 females were divided into a resting tongue position (RTP) group and a LTP group according to their tongue position. Subjects in the LTP group were divided into four subgroups (Q1, Q2, Q3, and Q4) according to the intraoral space volume. The 3D slicer software was used to measure the volume and minimum and average cross-sectional areas of each group. Airway differences between the RTP and LTP groups were analyzed to explore the association between tongue position and the upper airway.Results: No significant differences were found in the airway dimensions between the RTP and LTP groups. For both retropalatal and retroglossal segments, the volume and average cross-sectional area were significantly greater in the patients with extremely low tongue position. Regression analysis showed that the retroglossal airway dimensions were positively correlated with the intraoral space volume and negatively correlated with A point-nasion-B point and palatal plane to mandibular plane. Males generally had larger retroglossal and hypopharyngeal airways than females.Conclusions: Tongue position did not significantly influence upper airway volume or dimensions, except in the extremely LTP subgroup.","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":"53 5","pages":"317-327"},"PeriodicalIF":1.9,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/03/9b/kjod-53-5-317.PMC10547593.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41157438","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

Does the quality of orthodontic studies influence their Altmetric Attention Score? 正畸研究的质量会影响他们的高度注意力评分吗？

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2023-09-25 DOI: 10.4041/kjod22.101

Thamer Alsaif, Nikolaos Pandis, Martyn T Cobourne, Jadbinder Seehra

{"title":"Does the quality of orthodontic studies influence their Altmetric Attention Score?","authors":"Thamer Alsaif, Nikolaos Pandis, Martyn T Cobourne, Jadbinder Seehra","doi":"10.4041/kjod22.101","DOIUrl":"https://doi.org/10.4041/kjod22.101","url":null,"abstract":"Objective: The aim of this study was to determine whether an association between study quality, other study characteristics, and Altmetric Attention Scores (AASs) existed in orthodontic studies.Methods: The Scopus database was searched to identify orthodontic studies published between January 1, 2017, and December 31, 2019. Articles that satisfied the eligibility criteria were included in this study. Study characteristics, including study quality were extracted and entered into a pre-pilot data collection sheet. Descriptive statistics were calculated. On an exploratory basis, random forest and gradient boosting machine learning algorithms were used to examine the influence of article characteristics on AAS.Results: In total, 586 studies with an AAS were analyzed. Overall, the mean AAS of the samples was 5. Twitter was the most popular social media platform for publicizing studies, accounting for 53.7%. In terms of study quality, only 19.1% of the studies were rated as having a high level of quality, with 41.8% of the studies deemed moderate quality. The type of social media platform, number of citations, impact factor, and study type were among the most influential characteristics of AAS in both models. In contrast, study quality was one of the least influential characteristics on the AAS.Conclusions: Social media platforms contributed the most to the AAS for orthodontic studies, whereas study quality had little impact on the AAS.","PeriodicalId":51260,"journal":{"name":"Korean Journal of Orthodontics","volume":"53 5","pages":"328-335"},"PeriodicalIF":1.9,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/06/55/kjod-53-5-328.PMC10547592.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41174919","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

READER'S FORUM. 读者论坛。

IF 1.9 3区医学

Korean Journal of Orthodontics Pub Date : 2023-09-25 DOI: 10.4041/kjod23.121RF

Vasiliki Koretsi

引用次数: 0