The Angle orthodontist最新文献

英文中文

Combined orthodontic and surgical open bite correction. 正畸联合手术开牙矫正。

The Angle orthodontist

Pub Date : 2022-03-16 DOI: 10.2319/123121-959.1

G. Arnett, A. D'Agostino, E. Grendene, R. Mclaughlin, L. Trevisiol

OBJECTIVESTo present a clinical description of the team's treatment techniques.MATERIALS AND METHODSIn Part 1, 30 patients underwent segmental maxillary orthodontics, multisegment Le Fort I, and bilateral sagittal osteotomies of the mandible. Part 1 reported excellent occlusal stability at a mean follow-up of 49.43 months (range, 36-92 months). Cases presented in Part 2 were selected based on availability of excellent technique photographs. The same techniques described in Part 2 cases were used on all Part 1 patients.RESULTSThe coordination of arch widths and forms, overbite, overjet, and maxillary curve of Spee corrections were stable using the team protocols for orthodontic and surgical treatment.CONCLUSIONSIn the study group, long-term three-dimensionally stable occlusal results were achieved. To duplicate these results, specific orthodontic preparation, intraoperative surgical steps, and postsurgical steps must be carefully planned and executed. These steps are described in this article, Part 2.

目的介绍该团队治疗技术的临床描述。材料与方法第1部分，30例患者行上颌节段正畸、多节段Le Fort I和双侧下颌骨矢状面截骨术。第一部分报道了平均随访49.43个月(范围36-92个月)时良好的咬合稳定性。在第2部分提出的案例是根据优秀的技术照片的可用性选择的。在第2部分病例中描述的相同技术用于第1部分的所有患者。结果Spee矫正牙弓宽度与形态的协调性、复咬合、复咬合、上颌弯曲度均稳定。结论本研究获得了长期三维稳定的咬合效果。为了重复这些结果，必须仔细计划和执行特定的正畸准备、术中手术步骤和术后步骤。本文第2部分描述了这些步骤。

引用次数: 3

Association between malocclusion and articulation of phonemes in early childhood. 儿童早期音素发音与错颌畸形的关系。

The Angle orthodontist

Pub Date : 2022-03-11 DOI: 10.2319/043021-342.1

Omaya Amr-Rey, P. Sánchez-Delgado, R. Salvador-Palmer, R. Cibrián, V. Paredes-Gallardo

OBJECTIVESTo evaluate the relationship between dental malocclusion and speech to understand the etiology of speech sound disorders (SSD) in schoolchildren and to make a correct diagnosis and treatment plan.MATERIALS AND METHODSArticulation and dental occlusion, oromyofunctional evaluation with orofacial praxis and musculature, resting tongue position, and swallowing pattern were analyzed in 290 schoolchildren between the ages of 4 and 7 years. Statistical tests were considered significant for P < .05.RESULTSA significant association between dental malocclusions (Angle Class II and III, anterior open bite, edge-to-edge bite, overjet and anterior crossbite) and phonetic alterations (P = .008) was observed. Sigmatisms and rhotacisms were the most frequent disorders. Malocclusions also showed a significant association with oral habits and with orofacial praxis and muscle activity.CONCLUSIONSThe presence of malocclusion can cause imbalances in the functions involved in the stomatognathic system. Awareness of this relationship in young children would help professionals to implement preventive measures for the optimum development of children's oral health.

目的探讨牙合错与言语的关系，了解学童言语-声音障碍的病因，制定正确的诊断和治疗方案。材料与方法对290例4 ~ 7岁小学生的口腔咬合、口面肌功能评价、静息舌位和吞咽方式进行分析。P < 0.05认为有统计学意义。结果牙合错误(牙合角度ⅱ类和ⅲ类、前牙合开放、牙合边缘对牙合、牙合覆盖和前牙合交叉)与语音改变有显著相关性(P = 0.008)。符号音和元音是最常见的障碍。错牙合也与口腔习惯、口面活动和肌肉活动有显著的联系。结论错牙合的存在可引起口颌系统功能失衡。在幼儿中认识到这种关系将有助于专业人员实施预防措施，以实现儿童口腔健康的最佳发展。

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引用次数: 3

Effects of compressive stress combined with mechanical vibration on osteoclastogenesis in RAW 264.7 cells. 压缩应力联合机械振动对RAW 264.7细胞破骨细胞生成的影响。

The Angle orthodontist

Pub Date : 2022-03-09 DOI: 10.2319/090321-682.1

Boontida Changkhaokham, Sumit Suamphan, P. Pavasant, Suwanna Jitpukdeebodintra, C. Leethanakul

OBJECTIVESTo investigate the effects of compressive force and/or mechanical vibration on NFATc1, DCSTAMP, and CTSK (cathepsin K) gene expression and the number of tartrate-resistant acid phosphatase (TRAP)-positive multinucleated cells in RAW 264.7 cells, a murine osteoclastic-like cell line.MATERIALS AND METHODSRAW 264.7 cells were subjected to mechanical vibration, compressive force, or compressive force combined with vibration. Cell viability and the numbers of TRAP-positive multinucleated cells were evaluated. NFATc1, DCSTAMP, and CTSK gene expressions were analyzed using real-time quantitative reverse transcription polymerase chain reaction.RESULTSCompressive force combined with mechanical vibration significantly increased the numbers of TRAP-positive multinucleated cells but did not significantly affect cell viability. In addition, compressive force combined with mechanical vibration significantly increased NFATc1, DCSTAMP, and CTSK mRNA expression compared with compressive force or vibration alone.CONCLUSIONSCompressive force combined with mechanical vibration induces osteoclastogenesis and upregulates NFATc1, DCSTAMP, and CTSK gene expression in RAW 264.7 cells. These results provide more insight into the mechanisms by which vibratory force accelerates orthodontic tooth movement.

目的探讨压缩力和/或机械振动对小鼠破骨样细胞系RAW 264.7细胞中NFATc1、DCSTAMP和CTSK (cathepsin K)基因表达和TRAP阳性多核细胞数量的影响。材料与方法对sraw 264.7细胞进行机械振动、压缩力或压缩力与振动的联合作用。测定细胞活力和trap阳性多核细胞数量。实时定量逆转录聚合酶链反应分析NFATc1、DCSTAMP、CTSK基因表达。结果压缩力联合机械振动可显著增加trap阳性多核细胞的数量，但对细胞活力无显著影响。此外，与单独压缩力或振动相比，压缩力联合机械振动显著增加了NFATc1、DCSTAMP和CTSK mRNA的表达。结论压缩力联合机械振动诱导RAW 264.7细胞破骨生成，上调NFATc1、DCSTAMP、CTSK基因表达。这些结果提供了更多的洞察机制，通过振动力加速正畸牙齿的运动。

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引用次数: 0

Alveolar bone thickness and height changes following incisor retraction treatment with microimplants. 微种植牙后牙槽骨厚度和高度的变化。

The Angle orthodontist

Pub Date : 2022-03-01 DOI: 10.2319/091121-702.1

Bui Quang Hung, M. Hong, H. Kyung, Ho-Jin Kim

OBJECTIVESTo evaluate alveolar bone remodeling following incisor retraction treatment with microimplants and to examine the relationship between crown/root distal movement and thickness/height changes of the alveolus.MATERIALS AND METHODSA total of 24 patients (mean age, 19.29 ± 4.64 years) with bialveolar protrusion treated by incisor retraction with microimplants were included. The distances of the crown and root tip movements as well as the thickness (alveolar bone thickness [ABT]; labial, lingual, and total) and vertical level (vertical bone level [VBL]; labial and lingual) of the alveolar bone were assessed using cone-beam computed tomography images obtained before treatment (T1) and after treatment (T2). All T1 and T2 variables were compared, and further comparisons of alveolar bone changes were conducted between the two groups based on the distance of the crown (low-crown-movement and high-crown-movement groups) and root movements (low-root-movement and high-root-movement groups). To determine the correlation of the crown or root movement with the variables of alveolar bone changes, Pearson correlation coefficients were calculated.RESULTSSignificant differences were found in all VBL and ABT variables after treatment in both jaws but not in total ABT. Based on the crown and root movements, alveolar bone change significantly differed between the root-movement groups, whereas there was no significant difference between the crown-movement groups. In addition, root movement showed significant correlations with the variables.CONCLUSIONSRemarkable changes in the height and thickness of alveolar bone were found after microimplant-aided incisor retraction treatment in all groups except for total ABT. Root movement was significantly correlated with the alveolar bone changes.

目的观察微种植牙切牙后牙槽骨的重建情况，探讨牙槽骨的冠/根远端运动与牙槽骨厚度/高度变化的关系。材料与方法采用微种植治疗双牙槽突患者24例，平均年龄19.29±4.64岁。牙冠与根尖移动距离及牙槽骨厚度[ABT];唇部、舌部和全身)和垂直水平(垂直骨水平[VBL];使用治疗前(T1)和治疗后(T2)获得的锥形束计算机断层扫描图像评估牙槽骨的唇和舌部)。比较所有T1和T2变量，并根据冠的距离(低冠移动组和高冠移动组)和根的移动(低根移动组和高根移动组)进一步比较两组之间的牙槽骨变化。为了确定牙冠或牙根移动与牙槽骨变化的相关性，我们计算Pearson相关系数。结果治疗后双颌VBL和ABT各项指标均有显著性差异，但总ABT无显著性差异。基于牙冠和牙根运动，牙根运动组间牙槽骨变化有显著性差异，而牙冠运动组间无显著性差异。此外，根系运动与各变量呈显著相关。结论除全ABT组外，各组牙槽骨高度和厚度均有显著变化，牙根运动与牙槽骨变化有显著相关性。

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引用次数: 4

Academic Orthodontic Opportunities. 学术正畸机会。

The Angle orthodontist

Pub Date : 2022-02-15 DOI: 10.2319/0003-3219-88.6.845

引用次数: 0

Root resorption in relation to a modified piezocision technique. 根吸收与改良压切术的关系。

The Angle orthodontist

Pub Date : 2022-01-11 DOI: 10.2319/121520-1009.1

Juliana Gómez Arana, D. Rey, H. Rios, María Antonia Alvarez, L. Cevidanes, A. Ruellas, J. Aristizábal

OBJECTIVESTo evaluate root resorption of lower incisors and canines quantitatively in a group of patients who underwent orthodontic treatment with piezocision and/or a collagen reinforcement technique with a fully resorbable three-dimensional (3D) collagen xenograft matrix compared with a control group.MATERIALS AND METHODSThe study sample of this secondary analysis consisted of 32 periodontally healthy patients with angle Class I malocclusion or mild Class II or III malocclusion and moderate irregularity index scores who underwent orthodontic treatment and had before (T0) and after treatment (T1) cone-beam computed tomography scans. Root resorption of lower incisors and canines was assessed quantitatively in the following four groups: the control group received orthodontic treatment without piezocision, experimental group 1 received orthodontic treatment with piezocision, experimental group 2 received orthodontic treatment with piezocision and a 3D collagen matrix, and experimental group 3 received orthodontic treatment with a 3D collagen matrix.RESULTSAn overall statistically significant decrease in root length from T0 to T1 for all groups was observed (P < .05). However, there was no significant difference among the groups in the amount of root length decrease from T0 to T1.CONCLUSIONSOrthodontic treatment combined with piezocision does not increase the risk of root resorption of lower incisors and canines when compared with orthodontic treatment without acceleration techniques. More studies with larger samples should be undertaken to confirm these results.

目的与对照组相比，定量评估采用压切和/或胶原增强技术进行正畸治疗的患者下门牙和犬根的吸收情况。材料与方法本二次分析的研究样本包括32例牙周健康患者，患有角I类错牙合或轻度II或III类错牙合，中度不规则指数评分，接受正畸治疗，并在治疗前(T0)和治疗后(T1)进行锥形束计算机断层扫描。定量评估下门牙和犬根吸收情况，分为四组:对照组采用不做压切的正畸治疗，实验1组采用压切正畸治疗，实验2组采用压切+ 3D胶原基质正畸治疗，实验3组采用3D胶原基质正畸治疗。结果从T0到T1，各组根长均显著减少(P < 0.05)。但从T0到T1，各组间根长减少量无显著差异。结论与不加加速技术的正畸治疗相比，压切联合正畸治疗不会增加下门牙和犬根吸收的风险。应该进行更多的大样本研究来证实这些结果。

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引用次数: 1

List of 2020 Reviewers. 2020年评审人员名单。

The Angle orthodontist

Pub Date : 2020-12-18 DOI: 10.2319/0003-3219-91.1.141

引用次数: 0

Letter to the Editor. 给编辑的信。

The Angle orthodontist

Pub Date : 2020-11-04 DOI: 10.4274/tmsj.galenos.2020.07.03.09

S. Anvery, Pramod Philip

引用次数: 0

Mandibular dental changes following serial and late extraction of mandibular second premolars. 下颌第二前磨牙连续拔除和晚期拔除后的下颌牙齿变化。

The Angle orthodontist

Pub Date : 2020-03-01 Epub Date: 2019-10-24 DOI: 10.2319/041819-272.1

Rob Mintenko, David B Kennedy, Jolanta Aleksejuniene, Alan G Hannam, Edwin H Yen

Objectives: To determine changes in occlusal curves and dental tipping occurring from mandibular second premolar serial extraction, early extraction of deciduous mandibular second molars with missing second premolars, and late second premolar extraction compared with untreated controls.

Materials and methods: Information was collected from 85 subjects at three time points: T0, prior to serial extraction; T1, after serial extraction and drift prior to orthodontic treatment, and pretreatment for the late premolar extraction patients; and T2, posttreatment. Untreated age- and gender-matched controls were used for comparison. Three occlusal curves were measured on digitized mandibular casts, and dental tipping was assessed using lateral cephalograms.

Results: At T0, there were no significant differences among groups. At T1, there was significant steepening of Monson's sphere and the curve of Wilson between early and late extraction and control groups. At T2, the differences in Monson's sphere and the curve of Wilson were fully corrected. At T1, there were significant differences in the tipping of mandibular 6's, 4's, and 3's between the early extraction groups compared with the late extraction and control groups. At T2, these differences in tipping were fully corrected. There were no differences in mandibular incisor tipping between groups at T1 or T2.

Conclusions: Serial extraction produced steeper occlusal curves and significant tipping of mandibular first molars, first premolars, and canines after extraction and physiologic drift (T1). Accentuated occlusal curves and tooth tipping were fully corrected following orthodontic treatment (T2). Mandibular incisor position was unchanged by serial or late second premolar extraction.

目的与未经治疗的对照组相比，确定下颌第二前磨牙连续拔除、下颌第二磨牙脱落早期拔除和第二前磨牙缺失以及第二前磨牙晚期拔除所引起的咬合曲线和牙齿倾斜的变化：收集了 85 名受试者在三个时间点的信息：T0，连续拔牙前；T1，连续拔牙后，正畸治疗前的漂移，以及晚期前磨牙拔除患者的预处理；T2，治疗后。未经治疗的年龄和性别匹配的对照组用于比较。在数字化的下颌铸模上测量了三条咬合曲线，并使用侧位头影评估了牙齿倾斜情况：结果：在 T0 阶段，各组之间无明显差异。在 T1，早期拔牙组和晚期拔牙组与对照组之间的 Monson 球形和 Wilson 曲线明显变陡。在 T2 期，Monson's 球和 Wilson 曲线的差异得到了完全纠正。在 T1 期，早期拔牙组与晚期拔牙组和对照组相比，下颌 6's、4's 和 3's 的倾角存在显著差异。在 T2 期，这些倾角差异得到了完全纠正。下颌切牙倾角在T1或T2组之间没有差异：结论：在拔牙和生理漂移（T1）后，连续拔牙产生了更陡的咬合曲线，下颌第一磨牙、第一前磨牙和犬齿出现了明显的倾斜。经过正畸治疗（T2）后，突出的咬合曲线和牙齿倾斜得到了完全矫正。下颌切牙位置在连续拔牙或晚期第二前磨牙拔除后保持不变。

{"title":"Mandibular dental changes following serial and late extraction of mandibular second premolars.","authors":"Rob Mintenko, David B Kennedy, Jolanta Aleksejuniene, Alan G Hannam, Edwin H Yen","doi":"10.2319/041819-272.1","DOIUrl":"10.2319/041819-272.1","url":null,"abstract":"Objectives: To determine changes in occlusal curves and dental tipping occurring from mandibular second premolar serial extraction, early extraction of deciduous mandibular second molars with missing second premolars, and late second premolar extraction compared with untreated controls.Materials and methods: Information was collected from 85 subjects at three time points: T0, prior to serial extraction; T1, after serial extraction and drift prior to orthodontic treatment, and pretreatment for the late premolar extraction patients; and T2, posttreatment. Untreated age- and gender-matched controls were used for comparison. Three occlusal curves were measured on digitized mandibular casts, and dental tipping was assessed using lateral cephalograms.Results: At T0, there were no significant differences among groups. At T1, there was significant steepening of Monson's sphere and the curve of Wilson between early and late extraction and control groups. At T2, the differences in Monson's sphere and the curve of Wilson were fully corrected. At T1, there were significant differences in the tipping of mandibular 6's, 4's, and 3's between the early extraction groups compared with the late extraction and control groups. At T2, these differences in tipping were fully corrected. There were no differences in mandibular incisor tipping between groups at T1 or T2.Conclusions: Serial extraction produced steeper occlusal curves and significant tipping of mandibular first molars, first premolars, and canines after extraction and physiologic drift (T1). Accentuated occlusal curves and tooth tipping were fully corrected following orthodontic treatment (T2). Mandibular incisor position was unchanged by serial or late second premolar extraction.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8051250/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81008340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 the effects of the hybrid Pendulum in comparison with the conventional Pendulum appliance. 比较混合摆与传统摆器的效果。

The Angle orthodontist

Pub Date : 2020-03-01 DOI: 10.2319/051719-340.1

Erdal Bozkaya, T. Tortop, S. Yüksel, Emine Kaygısız

OBJECTIVETo evaluate the anchorage control and distalization of maxillary molars with the hybrid Pendulum appliance and to compare the results with a conventional Pendulum appliance.MATERIALS AND METHODSThis study was carried out on the pre-(T0) and post-(T1) treatment lateral cephalograms and dental casts of 43 patients with Angle Class II molar relationships who were treated with conventional or hybrid Pendulum appliances. The hybrid Pendulum (HP) group consisted of 22 patients (14 females; eight males; mean age 14.3 ± 2.43 years) and treatment results were compared with a conventional Pendulum appliance (CP) group, which consisted of 21 patients (15 females; six males; mean age 14.6 ± 3.39 years). Intragroup comparisons were made with Wilcoxon test and intergroup comparisons were made with Mann-Whitney U-test (P < .05).RESULTSThe mean distalization duration was 0.70 ± 0.25 years in the HP group and 0.83 ± 0.4 years in the CP group. Maxillary first molars showed significant distal movement and tipping of 4.25 mm and 9.09° in the HP group, and 3.21 mm and 9.86° in the CP group. Loss of anchorage at the first premolars was significantly smaller in the HP appliance group compared to CP group. The second premolars distalized spontaneously in the HP group while they mesialized significantly in the CP group. Proclination and protrusion of maxillary incisors were greater with the CP appliance compared to the HP appliance.CONCLUSIONSMaxillary molar distalization was achieved with both appliances. Mesialization of the anchorage unit was controlled successfully with the hybrid Pendulum; however, the conventional Pendulum appliance caused anchorage loss.

目的评价混合式钟摆矫治器对上颌磨牙的支抗控制和离体效果，并与常规钟摆矫治器进行比较。材料与方法本研究对43例采用常规或混合式摆治器治疗的Angle II类磨牙关系患者进行治疗前(T0)和治疗后(T1)的侧位头颅造影和牙模分析。混合型摆(HP)组22例，其中女性14例;八个男性;平均年龄(14.3±2.43)岁)与常规钟摆矫治器(CP)组21例(女性15例;六个男性;平均年龄14.6±3.39岁)。组内比较采用Wilcoxon检验，组间比较采用Mann-Whitney u检验(P < 0.05)。结果HP组和CP组的平均离体时间分别为0.70±0.25年和0.83±0.4年。上颌第一磨牙远端移动明显，HP组为4.25 mm、9.09°，CP组为3.21 mm、9.86°。HP矫治组第一前磨牙支抗损失明显小于CP组。HP组第二前磨牙自发离体，而CP组第二前磨牙明显离体。与HP矫治器相比，CP矫治器上颌门牙的前倾和前伸更大。结论两种矫治器均能达到上颌磨牙远端。采用混合摆控制了锚固单元的定位;然而，传统的钟摆矫治器造成了锚固损失。

{"title":"Evaluation of the effects of the hybrid Pendulum in comparison with the conventional Pendulum appliance.","authors":"Erdal Bozkaya, T. Tortop, S. Yüksel, Emine Kaygısız","doi":"10.2319/051719-340.1","DOIUrl":"https://doi.org/10.2319/051719-340.1","url":null,"abstract":"OBJECTIVE\u0000To evaluate the anchorage control and distalization of maxillary molars with the hybrid Pendulum appliance and to compare the results with a conventional Pendulum appliance.\u0000\u0000\u0000MATERIALS AND METHODS\u0000This study was carried out on the pre-(T0) and post-(T1) treatment lateral cephalograms and dental casts of 43 patients with Angle Class II molar relationships who were treated with conventional or hybrid Pendulum appliances. The hybrid Pendulum (HP) group consisted of 22 patients (14 females; eight males; mean age 14.3 ± 2.43 years) and treatment results were compared with a conventional Pendulum appliance (CP) group, which consisted of 21 patients (15 females; six males; mean age 14.6 ± 3.39 years). Intragroup comparisons were made with Wilcoxon test and intergroup comparisons were made with Mann-Whitney U-test (P < .05).\u0000\u0000\u0000RESULTS\u0000The mean distalization duration was 0.70 ± 0.25 years in the HP group and 0.83 ± 0.4 years in the CP group. Maxillary first molars showed significant distal movement and tipping of 4.25 mm and 9.09° in the HP group, and 3.21 mm and 9.86° in the CP group. Loss of anchorage at the first premolars was significantly smaller in the HP appliance group compared to CP group. The second premolars distalized spontaneously in the HP group while they mesialized significantly in the CP group. Proclination and protrusion of maxillary incisors were greater with the CP appliance compared to the HP appliance.\u0000\u0000\u0000CONCLUSIONS\u0000Maxillary molar distalization was achieved with both appliances. Mesialization of the anchorage unit was controlled successfully with the hybrid Pendulum; however, the conventional Pendulum appliance caused anchorage loss.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84595540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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