Angle Orthodontist最新文献_第6页

Translating predictors from research to practice. 将预测因子从研究转化为实践。

IF 3.4 2区医学

Angle Orthodontist Pub Date : 2023-03-01 DOI: 10.2319/1945-7103-93.2.253

David W Chambers

引用次数: 0

Letters From Our Readers. 读者来信。

IF 3.4 2区医学

Angle Orthodontist Pub Date : 2023-03-01 DOI: 10.2319/1945-7103-93.2.255

Robert Kelleher

引用次数: 0

Letters From Our Readers. 读者来信。

IF 3.4 2区医学

Angle Orthodontist Pub Date : 2023-03-01 DOI: 10.2319/1945-7103-93.2.256

Naphtali Brezniak, Atalia Wasserstein

引用次数: 0

Role of six cytokines and bone metabolism biomarkers in gingival crevicular fluid in patients undergoing fixed orthodontic appliance treatment in comparison with aligners: a clinical study. 固定矫治器与矫治器治疗患者牙龈缝隙液中六种细胞因子和骨代谢生物标志物的作用对比：一项临床研究。

IF 3.4 2区医学

Angle Orthodontist Pub Date : 2023-02-20 DOI: 10.2319/091722-649.1

Muhammad Abdullah Kamran, Abdullah A Alnazeh, Mohammad Almagbol, Salem Almoammar, Ali Hasan A Alhaizaey, Ibrahim Alshahrani

{"title":"Role of six cytokines and bone metabolism biomarkers in gingival crevicular fluid in patients undergoing fixed orthodontic appliance treatment in comparison with aligners: a clinical study.","authors":"Muhammad Abdullah Kamran, Abdullah A Alnazeh, Mohammad Almagbol, Salem Almoammar, Ali Hasan A Alhaizaey, Ibrahim Alshahrani","doi":"10.2319/091722-649.1","DOIUrl":"10.2319/091722-649.1","url":null,"abstract":"Objectives: The objective of this study was to assess bone biomarkers and cytokines in patients with conventional labial appliances (CLAs) and aligners.Materials and methods: Participants were recruited to undergo orthodontic treatment with CLAs and aligners according to predefined inclusion and exclusion criteria. Periodontal examination was accomplished at baseline and 4 weeks using the plaque index (PI), gingival index (GI), and bleeding on probing (BoP). Samples of gingival crevicular fluid (GCF) were collected at baseline (T0) before the start of treatment and at the 1-month follow-up (T1) to assess bone metabolic and inflammatory biomarkers. GCF from participants with CLAs and aligners was evaluated with enzyme-linked immunosorbent assay. Comparison between labial conventional orthodontic treatment and aligners were assessed using an unpaired t-test. The difference between T0 and T1 was measured using a paired t-test.Results: BoP, PI, and GI demonstrated no significant difference between participants treated with aligners and subjects with CLAs at baseline and at 4 weeks (P > .05). Bone markers and other biomarkers (tumor necrosis factor α, interleukin [IL]-α, IL-2, IL-6, and IL-8) showed significant differences (P < .05). Also, a significant difference between CLAs and aligners was noted among all biomarkers (P < .05) except IL-β.Conclusions: Aligners and CLAs increase the level of inflammatory and bone metabolic biomarkers after 1 month.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10117209/pdf/i1945-7103-93-3-335.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9382096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Assessment of thin bony structures using cone-beam computed tomography. 使用锥形束计算机断层扫描评估薄骨结构。

IF 3.4 2区医学

Angle Orthodontist Pub Date : 2023-02-16 DOI: 10.2319/090922-633.1

Camilla Lennholm, Anna Westerlund, Henrik Lund

{"title":"Assessment of thin bony structures using cone-beam computed tomography.","authors":"Camilla Lennholm, Anna Westerlund, Henrik Lund","doi":"10.2319/090922-633.1","DOIUrl":"10.2319/090922-633.1","url":null,"abstract":"Objectives: To investigate the validity and reliability of marginal bone level measurements on cone-beam computed tomography (CBCT) images of thin bony structures using various reconstruction techniques, two image resolutions, and two viewing modes.Materials and methods: CBCT and histologic measurements of the buccal and lingual aspects of 16 anterior mandibular teeth from 6 human specimens were compared. Multiplanar (MPR) and three-dimensional (3D) reconstructions, standard and high resolutions, and gray scale and inverted gray scale viewing modes were assessed.Results: Validity of radiologic and histologic comparisons were highest using the standard protocol, MPR, and the inverted gray scale viewing mode (mean difference = 0.02 mm) and lowest using a high-resolution protocol and 3D-rendered images (mean difference = 1.10 mm). Mean differences were significant (P < .05) at the lingual surfaces for both reconstructions, viewing modes (MPR windows), and resolutions.Conclusions: Varying the reconstruction technique and viewing mode does not improve the observer's ability to visualize thin bony structures in the anterior mandibular region. The use of 3D-reconstructed images should be avoided when thin cortical borders are suspected. The small difference when using a high-resolution protocol is unjustified due to the higher radiation dose required. Previous studies have focused on technical parameters; the present study explores the next link in the imaging chain.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10117211/pdf/i1945-7103-93-3-328.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9381315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Pain and discomfort perception during miniscrew-anchored maxillary protraction: secondary data analysis of a randomized clinical trial. 微型螺钉固定上颌牵引过程中的疼痛和不适感：随机临床试验的辅助数据分析。

IF 3.4 2区医学

Angle Orthodontist Pub Date : 2023-02-16 DOI: 10.2319/092022-655.1

Felicia Miranda, Lucas Duarte Parra, José Carlos da Cunha Bastos, Alexandre Magno Dos Santos, Ivan de Souza Silva, Beatriz Quevedo, Aron Aliaga-Del Castillo, Daniela Garib

{"title":"Pain and discomfort perception during miniscrew-anchored maxillary protraction: secondary data analysis of a randomized clinical trial.","authors":"Felicia Miranda, Lucas Duarte Parra, José Carlos da Cunha Bastos, Alexandre Magno Dos Santos, Ivan de Souza Silva, Beatriz Quevedo, Aron Aliaga-Del Castillo, Daniela Garib","doi":"10.2319/092022-655.1","DOIUrl":"10.2319/092022-655.1","url":null,"abstract":"Objectives: To compare the perception of pain and discomfort of patients and guardians during treatment between miniscrew-anchored maxillary protraction (MAMP) therapy using Hybrid (HH) and Conventional Hyrax (CH) expanders.Materials and methods: Group HH was composed of 18 subjects (8 female, 10 male; initial age: 10.80 years) with Class III malocclusion treated with a hybrid expander in the maxilla and two miniscrews in the anterior region of the mandible. Class III elastics were used from maxillary first molar to mandibular miniscrews. Group CH was composed of 14 subjects (6 female, 8 male; initial age: 11.44 years) treated with a similar protocol except for conventional Hyrax expander. Pain and discomfort of patients and guardians were assessed using a visual analog scale immediately after placement (T1), after 24 hours (T2), and 1 month after appliance installation (T3). Mean differences (MD) were obtained. Intergroup and intragroup timepoint comparisons were performed using independent t-tests, analysis of variance for repeated measures and Friedman test (P < 5%).Results: Both groups demonstrated similar levels of pain and discomfort with a significant decrease after 1 month of appliance placement (MD: 4.21; P = .608). Compared to patient perceptions, guardians reported a higher level of pain and discomfort at all timepoints (MD, T1: 13.91, P < .001; T2: 23.15, P < .001; T3: 9.35, P = .008).Conclusions: MAMP therapy with HH and CH produced similar levels of pain and discomfort after appliance installation until 1 month after treatment. Pain and discomfort may not influence the choice between HH and CH expanders.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10117207/pdf/i1945-7103-93-3-313.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9381317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Occlusal contacts and treatment with the Invisalign appliance: a retrospective analysis of predicted vs achieved outcomes. 咬合接触和隐适美矫正器的治疗：预测结果与实现结果的回顾性分析。

IF 3.4 2区医学

Angle Orthodontist Pub Date : 2023-02-13 DOI: 10.2319/102822-738.1

Emma Bowman, Patrick Bowman, Tony Weir, Craig Dreyer, Maurice J Meade

{"title":"Occlusal contacts and treatment with the Invisalign appliance: a retrospective analysis of predicted vs achieved outcomes.","authors":"Emma Bowman, Patrick Bowman, Tony Weir, Craig Dreyer, Maurice J Meade","doi":"10.2319/102822-738.1","DOIUrl":"10.2319/102822-738.1","url":null,"abstract":"Objectives: To quantify the predicted occlusal contact outcomes compared with the clinically achieved occlusal contacts following treatment using the Invisalign aligner appliance.Materials and methods: The occlusal contacts of 33 adult patients presenting with a Class I mild-to-moderate malocclusion (spacing <4 mm or crowding of <6 mm) and treated using the Invisalign appliance were measured at the initial, predicted, and achieved stages of treatment by the metrology software Geomagic Control X. Assessed measurements were related to individual teeth and anterior, posterior, and overall contacts.Results: The mean (standard deviation) difference between the achieved occlusal contact was significantly less than that predicted for overall occlusal contact and posterior occlusal contact (P < .0025). The achieved posterior occlusal contact was also less than pretreatment initial posterior occlusal contact. There was no difference in anterior occlusal contact between the predicted and achieved outcomes (P > .05). The central and lateral incisors displayed no statistically significant difference between the predicted and achieved occlusal contact. The patients with prescribed overcorrection demonstrated a statistically significant difference in predicted occlusal contact compared with those with nonprescribed overcorrection (P ≤ .0025), but no statistically significant difference in achieved occlusal contact.Conclusions: Treatment by the Invisalign appliance in Class I mild-to-moderate malocclusion resulted in a decrease in posterior occlusal contact. Further research is required to account for the deficiencies between the predicted and achieved clinical outcome related to occlusal contact and to determine the corrective changes required in the treatment protocols.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10117214/pdf/i1945-7103-93-3-275.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9735229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 root resorption in the lower incisors after orthodontic treatment of skeletal Class III malocclusion by three-dimensional volumetric measurement with cone-beam computed tomography. 三维锥束计算机断层测量正畸治疗骨性ⅲ类错颌后下门牙牙根吸收的评价。

IF 3.4 2区医学

Angle Orthodontist Pub Date : 2023-02-13 DOI: 10.2319/090322-609.1

Junjie Chen, Ruoyu Ning

{"title":"Evaluation of root resorption in the lower incisors after orthodontic treatment of skeletal Class III malocclusion by three-dimensional volumetric measurement with cone-beam computed tomography.","authors":"Junjie Chen, Ruoyu Ning","doi":"10.2319/090322-609.1","DOIUrl":"10.2319/090322-609.1","url":null,"abstract":"Objectives: To investigate the volumetric changes of the lower incisor roots in skeletal Class III orthodontic patients with anterior crossbite after premolar extraction therapy.Materials and methods: Thirty-six adults, aged 18-28 years, had four-premolar extraction treatment. Pre- and posttreatment cone-beam computed tomography (CBCT) images were used to assess the thickness and height of alveolar bone, root volume, and length. A paired t-test was used to detect changes in root volume and length before and after treatment. Pearson's correlation analysis was applied to estimate the correlation between root volume and dentoskeletal morphology.Results: Both the central and lateral incisors had intrusion and tipping movement after treatment. Compared with pretreatment data, root length decreased significantly. The lingual root volume of root cervical, apical third, and the labial root volume of the root apical third decreased significantly (P < .05), among which the percentage of tooth loss at the tip volume was the highest. The pretreatment height of the alveolar ridge crest, thickness of the alveolar bone, and type of incisor movement were related to the volume and length loss.Conclusions: Volume and length loss in the apical third of the lower incisor roots in skeletal Class III patients treated with a Class III bicuspid extraction pattern is common. The pretreatment height of the alveolar ridge crest, thickness of the alveolar bone, and type of tooth movement are related to the loss.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10117204/pdf/i1945-7103-93-3-320.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9735228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of piezocision-assisted lower second molar protraction on periodontal tissues, alveolar bone height, and lower second molar root resorption. 压电切削辅助下第二磨牙牵引对牙周组织、牙槽骨高度和下第二磨牙根吸收的影响。

IF 3.4 2区医学

Angle Orthodontist Pub Date : 2023-02-10 DOI: 10.2319/090622-621.1

Elham S Abu Alhaija, Marwan M Al-Areqi, Raed AlShami, Emad F Al Maaitah, Ahed Al Wahadni

{"title":"Effect of piezocision-assisted lower second molar protraction on periodontal tissues, alveolar bone height, and lower second molar root resorption.","authors":"Elham S Abu Alhaija, Marwan M Al-Areqi, Raed AlShami, Emad F Al Maaitah, Ahed Al Wahadni","doi":"10.2319/090622-621.1","DOIUrl":"10.2319/090622-621.1","url":null,"abstract":"Objectives: To assess the effect of piezocision on periodontal tissues and alveolar bone height and to detect lower second molar root resorption in piezocision-assisted mandibular second molar protraction compared to no-piezocision molar protraction.Materials and methods: Twenty-one subjects (four males, 17 females, aged 22.43 ± 2.83 years) who presented with bilateral extraction of lower first molars were included. The patients were divided into two groups; Group 1: Piezocision-assisted molar protraction (right or left side of subjects) in which piezocision was performed immediately before lower second molar protraction and, Group 2: No-piezocision molar protraction in which lower second molar protraction was not surgically assisted. Plaque index (PI), gingival index (GI), periodontal pocket depth (PPD), width of keratinized gingiva (WKG), gingival recession (GR), lower second molar mesial root resorption, alveolar bone height, and mandibular bone height were recorded at T1 (immediately before molar protraction) and at T2 (after second molar space closure).Results: In the piezocision-assisted molar protraction group, significant changes were detected in the WKG (P < .001), GR (P < .05), and the mandibular bone height (P < .001). Compared to the no-piezocision group, piezocision-assisted molar protraction resulted in an increased WKG (P < .001) and less second molar mesial root resorption (P < .01).Conclusions: Piezocision does not have any detrimental effect on the periodontium and produces less root resorption.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10117208/pdf/i1945-7103-93-3-306.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9380908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Fixation of an orthodontic anchor screw using beta-tricalcium phosphate in a screw-loosening model in rats. 在大鼠螺钉松动模型中使用 beta 磷酸三钙固定正畸固定螺钉。

IF 3.4 2区医学

Angle Orthodontist Pub Date : 2023-02-10 DOI: 10.2319/080822-558.1

Kie Nishioka-Sakamoto, Hitoshi Hotokezaka, Yuka Hotokezaka, Yukako Nashiro, Mariko Funaki, Seigo Ohba, Noriaki Yoshida

{"title":"Fixation of an orthodontic anchor screw using beta-tricalcium phosphate in a screw-loosening model in rats.","authors":"Kie Nishioka-Sakamoto, Hitoshi Hotokezaka, Yuka Hotokezaka, Yukako Nashiro, Mariko Funaki, Seigo Ohba, Noriaki Yoshida","doi":"10.2319/080822-558.1","DOIUrl":"10.2319/080822-558.1","url":null,"abstract":"Objectives: To create an orthodontic anchor screw (OAS)-loosening model and to investigate whether filling the bone hole with beta-tricalcium phosphate (β-TCP) can fix the OAS against orthodontic force.Materials and methods: Bone holes with different diameters (1.6, 2.1, or 2.5 mm) were drilled in the tibias of 11-week-old male Wistar rats, and an OAS (3.0 mm in length and 1.2 mm in diameter) was inserted. After a healing period of 2 or 4 weeks, orthodontic force was applied, and the diameter of the bone hole appropriate for the loosening model was determined. Subsequently, under the loosening model, the bone hole was filled with β-TCP, orthodontic force was applied, and movement of the OAS and surrounding tissue changes were evaluated by micro-computed tomography images and histological specimen analysis.Results: The bone hole of 1.6 mm in diameter was employed as the OAS-loosening model. When β-TCP was inserted into the bone hole, the linear distance and mesial tipping angle of the OAS movement decreased markedly. Furthermore, the values of bone morphometry significantly increased with β-TCP filling.Conclusions: An OAS-loosening model was established in rats and demonstrated that the loosening OAS was stabilized by β-TCP filling through bone formation. β-TCP may be useful for fixation of a loosening OAS.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10117216/pdf/i1945-7103-93-3-341.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9380912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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