The Angle orthodontist最新文献_第4页

Influence of aging on facial attractiveness perception in individuals with normal occlusion.

The Angle orthodontist Pub Date : 2025-02-06 DOI: 10.2319/082724-708.1

Gabriela Natsumeda, Ivan Silva, Felicia Miranda, Camila Massaro, Daniela Garib

{"title":"Influence of aging on facial attractiveness perception in individuals with normal occlusion.","authors":"Gabriela Natsumeda, Ivan Silva, Felicia Miranda, Camila Massaro, Daniela Garib","doi":"10.2319/082724-708.1","DOIUrl":"https://doi.org/10.2319/082724-708.1","url":null,"abstract":"Objectives: To evaluate the perception of orthodontists and laypeople of facial attractiveness during aging in participants with acceptable, untreated occlusion.Materials and methods: Frontal and profile facial photographs of 24 participants (13 male, 11 female) with acceptable, untreated occlusion, taken during adolescence (mean age = 13.3 years) and late adulthood (mean age = 61.2 years) were used. Groups of 30 orthodontists and 30 laypeople scored the facial attractiveness using a scale from 1 (unattractive face) to 10 (very attractive face). Raters indicated the apparent age at T2 and the most and least pleasing facial structures. Three-way analysis of variance was used to assess the influence of sex, age, and rater group on facial attractiveness. Mann-Whitney test was used to compare males and females regarding the apparent age perceived by raters at late adulthood (P < .05).Results: Mature age was judged with lower scores on facial attractiveness (mean = 5.43) by both groups compared with adolescence (mean = 6.51). Facial attractiveness was not affected by sex. At late adulthood, females were considered younger by both groups of raters, while men were perceived more similar to their actual age. Laypeople were slightly more critical than orthodontists in the assessment of facial attractiveness. Thirty percent of the raters indicated the eyes as the most pleasant region and the chin and nose as the least pleasing structures.Conclusions: Facial attractiveness slightly decreased from adolescent to mature ages. Women appeared younger than their actual age at late adulthood.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143257660","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}

引用次数: 0

Importance of the early phase of orthodontic force application in the induction of root resorption.

The Angle orthodontist Pub Date : 2025-02-06 DOI: 10.2319/060324-433.1

Mariko Funaki-Dohi, Yuka Hotokezaka, Hitoshi Hotokezaka, Yukako Nashiro-Oyakawa, Takeshi Moriishi, Mizuki Ohama, Yosuke Iuchi, Takuya Nakamura, Kie Nishioka-Sakamoto, Noriaki Yoshida

{"title":"Importance of the early phase of orthodontic force application in the induction of root resorption.","authors":"Mariko Funaki-Dohi, Yuka Hotokezaka, Hitoshi Hotokezaka, Yukako Nashiro-Oyakawa, Takeshi Moriishi, Mizuki Ohama, Yosuke Iuchi, Takuya Nakamura, Kie Nishioka-Sakamoto, Noriaki Yoshida","doi":"10.2319/060324-433.1","DOIUrl":"https://doi.org/10.2319/060324-433.1","url":null,"abstract":"Objective: To investigate the effectiveness of early and short-term administration of lithium (Li) during orthodontic force application (OFA) in preventing orthodontically induced root resorption (OIRR) and verify the importance of the early phase of OFA in the induction of OIRR.Materials and methods: Bilateral maxillary first molars of 10-week-old male Wistar rats were moved for 14 days using a closed coil spring inserted between the first molar and the incisor. The rats were randomly grouped into three groups: a group receiving Li for the first 4 days, a group receiving Li daily for 14 days, and a control group receiving a vehicle (saline). Orthodontic tooth movement (OTM) was measured using microcomputed tomography on day 14. The OIRR, osteoclasts, and odontoclasts were evaluated via histological analysis. Immunohistochemical staining for the receptor-activated NF-kB ligand and osteoprotegerin was also performed.Results: The OTM distance did not differ among the three groups, and the pattern of OTM changed from tipping to bodily movement for both Li groups. Early and short-term administration of Li suppressed OIRR on day 14 as effectively as long-term administration for 14 days. The observed odontoclasts on days 4 and 14 were significantly reduced in both Li groups. Osteoprotegerin expression was significantly increased on day 14 in both groups receiving Li relative to the vehicle group.Conclusions: Early and short-term Li administration effectively suppressed OIRR. This suggests that the early phase of OFA plays an important role in the induction of OIRR.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143257599","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}

引用次数: 0

Comparison of individualized facial growth prediction models using artificial intelligence and partial least squares based on the Mathews growth collection.

The Angle orthodontist Pub Date : 2025-01-31 DOI: 10.2319/082124-687.1

Jeffrey Roseth, Jong-Hak Kim, Jun-Ho Moon, Dong-Yub Ko, Heesoo Oh, Shin-Jae Lee, Heeyeon Suh

{"title":"Comparison of individualized facial growth prediction models using artificial intelligence and partial least squares based on the Mathews growth collection.","authors":"Jeffrey Roseth, Jong-Hak Kim, Jun-Ho Moon, Dong-Yub Ko, Heesoo Oh, Shin-Jae Lee, Heeyeon Suh","doi":"10.2319/082124-687.1","DOIUrl":"https://doi.org/10.2319/082124-687.1","url":null,"abstract":"Objectives: To develop facial growth prediction models using artificial intelligence (AI) under various conditions, and to compare performance of these models with each other as well as with the partial least squares (PLS) growth prediction model.Materials and methods: Longitudinal lateral cephalograms from 33 subjects in the Mathews growth collection were utilized. A total of 1257 pairs of before and after growth lateral cephalograms were included. In each image, 46 hard and 32 soft tissue landmarks were manually identified. Growth prediction models were constructed using a deep learning method based on TabNet deep neural network and partial least squares (PLS) method. Prediction accuracies of the two methods were compared.Results: On average, artificial intelligence (AI) showed 0.61 mm less prediction error than PLS. Among the 77 predicted landmarks, AI was more accurate than PLS in 60 landmarks. When comparing AI models with varying numbers of training epochs, those with higher epochs yielded more accurate predictions. Overall, PLS and AI exhibited greater prediction errors for soft tissue and mandibular landmarks compared to hard tissue and maxillary landmarks. However, AI showed a smaller increase in prediction error in areas with greater variability.Conclusions: AI proved to be a valuable growth prediction method, with clinically acceptable prediction errors averaging 1.49 mm for 45 hard tissue landmarks and 1.71 mm for 32 soft tissue landmarks. PLS accurately predicted landmarks with low variability. However, AI generally outperformed PLS, particularly for landmarks in the lower part of the craniofacial structure and soft tissue, where uncertainty is considerable.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143070576","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}

引用次数: 0

Anterior retraction with a canine implant in the way using clear aligner: a case report. 前牙内收与犬种植体的方式使用明确对准：1例报告。

The Angle orthodontist Pub Date : 2025-01-13 DOI: 10.2319/041624-302.1

Xu Zhang, Pochun Lin, Naiqi Liao, Quan Yuan, Yu Li

{"title":"Anterior retraction with a canine implant in the way using clear aligner: a case report.","authors":"Xu Zhang, Pochun Lin, Naiqi Liao, Quan Yuan, Yu Li","doi":"10.2319/041624-302.1","DOIUrl":"https://doi.org/10.2319/041624-302.1","url":null,"abstract":"Objective: A 26-year-old woman came for orthodontic treatment to improve her profile with protrusive lips. Diagnosed as bimaxillary protrusion, extraction followed by anterior retraction was indispensable for the case. However, her left upper lateral incisor was absent, the left upper canine had moved mesially and replaced the adjacent incisor, and the original canine location was restored with a long implant, which was in good condition. Surgical removal of the implant would be tricky and might lead to atrophy of the alveolar bone. In addition, the upper left central incisor had a short, curved root, which could not undergo significant movement.Materials and methods: After crucial discussion between orthodontists and implantologists, based on digital setup, an innovative treatment plan was developed. Four incisors were extracted followed by clear aligner therapy for anterior retraction. An individualized zirconia abutment was installed on the upper left implant in a retroclined direction, cemented with a zirconia crown to replace the upper lateral incisor. Minimally invasive veneers were made to reshape the other upper incisors for better esthetics.Results: Finally, the patient had her profile greatly improved and the teeth well aligned without removal of the implant.Conclusion: Thus, the seemingly mission impossible was accomplished with a satisfactory outcome, thanks to imaginative treatment planning and delicate interdisciplinary collaboration based on digital simulation.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142974203","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}

引用次数: 0

Orthodontic treatment for preserving periodontally hopeless teeth in a middle-aged patient: a case report. 正畸治疗保牙周无望的中年患者1例报告。

The Angle orthodontist Pub Date : 2025-01-13 DOI: 10.2319/041524-299.1

Hai-Van Giap, Seung-Hyun Kang, Jeong-Won Paik, Kyung Chul Oh, Kee-Joon Lee

{"title":"Orthodontic treatment for preserving periodontally hopeless teeth in a middle-aged patient: a case report.","authors":"Hai-Van Giap, Seung-Hyun Kang, Jeong-Won Paik, Kyung Chul Oh, Kee-Joon Lee","doi":"10.2319/041524-299.1","DOIUrl":"https://doi.org/10.2319/041524-299.1","url":null,"abstract":"In this case report, we show a strategic approach to prolonging the lifespan of pathologically migrated maxillary canines with a hopeless prognosis in a 57-year-old female patient, highlighting the potential of orthodontic management for middle-aged patients to enhance both occlusion and facial esthetics while minimizing the need for extensive prosthetic treatment. According to the visual treatment objective, the nonextraction treatment plan showed advantages in the type of orthodontic tooth movement and final occlusal relationship. Therefore, considering the favorable periodontal treatment results and single-root teeth, the hopelessly migrated maxillary canines were relocated, eliminating the existing trauma from occlusion. Segmental tooth movement was performed, and orthodontic temporary skeletal anchorage devices were used to support strategic orthodontic tooth movement. After 27 months of treatment, proper occlusion was established with a significant improvement in facial esthetics. The periodontally compromised teeth were preserved with adequate periodontal support. The patient expressed satisfaction with the results, and the 30-month follow-up records confirmed the stability of treatment outcomes.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142974185","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}

引用次数: 0

Evaluation of quality of life after orthognathic surgery in obstructive sleep apnea syndrome: a systematic review. 阻塞性睡眠呼吸暂停综合征患者正颌手术后的生活质量评估：系统综述。

The Angle orthodontist Pub Date : 2025-01-01 DOI: 10.2319/020624-99.1

Inês Francisco, Raquel Travassos, Anabela Baptista Paula, Bárbara Oliveiros, Filipa Marques, Madalena Prata Ribeiro, Mariana McEvoy, Mariana Santos, Catarina Oliveira, Carlos Miguel Marto, Eunice Carrilho, Catarina Nunes, Francisco Vale

{"title":"Evaluation of quality of life after orthognathic surgery in obstructive sleep apnea syndrome: a systematic review.","authors":"Inês Francisco, Raquel Travassos, Anabela Baptista Paula, Bárbara Oliveiros, Filipa Marques, Madalena Prata Ribeiro, Mariana McEvoy, Mariana Santos, Catarina Oliveira, Carlos Miguel Marto, Eunice Carrilho, Catarina Nunes, Francisco Vale","doi":"10.2319/020624-99.1","DOIUrl":"10.2319/020624-99.1","url":null,"abstract":"Objectives: To develop a systematic review of patient perspectives on the treatment of obstructive sleep apnea syndrome (OSAS) after undergoing orthognathic advancement surgery.Materials and methods: This systematic review adhered to the preferred reporting items for systematic reviews and meta-analysis (PRISMA) guidelines, and Patient, Intervention, Comparison, and Outcome (PICO) methodology was employed to formulate the research question. A literature search was performed using the following databases: Cochrane Library (Trials), PubMed via MEDLINE, Embase, and Web of Science (all databases). The Newcastle-Ottawa Scale was used to assess quality of the studies.Results: Initially, 1407 articles were retrieved from diverse databases, and these were subjected to initial scrutiny. Subsequently, 17 articles were selected for thorough quality analysis and 6 studies for quantitative analysis. Most studies were classified as good quality. Maxillomandibular advancement surgery appeared to enhance patient satisfaction in cases of moderate to severe adult OSAS.Conclusions: Maxillomandibular advancement surgery significantly improves patients' subjective overall quality of life, improving by 6.36 points in questionnaire ratings and demonstrating long-term stability.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":" ","pages":"104-125"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11662364/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142607862","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

Eruptive path of maxillary canines in patients with lateral incisor agenesis: a longitudinal follow-up. 侧切牙缺失患者的上颌犬齿萌出路径：纵向随访。

The Angle orthodontist Pub Date : 2025-01-01 DOI: 10.2319/031324-211.1

João Gabriel Rando Poiani, Gabriela Utrago, Felícia Miranda, Vinícius Augustus Merino da Silva, Ana Cláudia de Castro Ferreira Conti, Daniela Garib

{"title":"Eruptive path of maxillary canines in patients with lateral incisor agenesis: a longitudinal follow-up.","authors":"João Gabriel Rando Poiani, Gabriela Utrago, Felícia Miranda, Vinícius Augustus Merino da Silva, Ana Cláudia de Castro Ferreira Conti, Daniela Garib","doi":"10.2319/031324-211.1","DOIUrl":"10.2319/031324-211.1","url":null,"abstract":"Objectives: To evaluate the eruptive angle, mesiodistal position and height of permanent maxillary canines in patients with agenesis of the permanent maxillary lateral incisor (AL) from the mixed to the permanent dentition.Materials and methods: The sample was composed of orthodontic records of subjects with and without AL. The agenesis group comprised 11 patients, 7 with bilateral and 4 with unilateral AL (8.6 ± 1.6 years, 4 males, 7 females). The control group comprised 9 patients (8.5 ± 1.0 years, 2 males, 7 females) without AL. Panoramic radiographs were analyzed at three timepoints: inter-transitional period (T1), second transitional period (10.1±0.9 years, T2) and permanent dentition (11.9±1.1 years, T3). The long axis angle of the permanent maxillary canine (α and β), the mesiodistal distance (d) in relation to the central incisor, and the height (H) from the cusp tip of the canine to the occlusal plane were evaluated. Intergroup comparisons were performed with t-tests, Mann-Whitney, and Chi-square tests (P < 0.05).Results: A mesial position of the canine cusp tip relative to the distal of the permanent maxillary central incisor was observed for the agenesis group at T1, T2 and T3. From T1 to T2, the agenesis group showed greater occlusal displacement of the canine tooth germ.Conclusions: In patients with AL, canine tooth germs showed more mesial displacement and erupted a mean of 4.5 mm closer to the maxillary central incisors. Eruption of maxillary canines tended to be accelerated during the late mixed dentition in patients with AL.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":" ","pages":"19-26"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11662354/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142083021","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

Diagnostic performance of ClinCheck, Dolphin Imaging, and 3D Slicer software for Bolton discrepancy analysis. 用于博尔顿差异分析的 ClinCheck、Dolphin Imaging 和 3D Slicer 软件的诊断性能。

The Angle orthodontist Pub Date : 2025-01-01 DOI: 10.2319/022724-156.1

Thalita Teixeira Santana, Flávio Copello, Guido Artemio Marañón-Vásquez, Lincoln Issamu Nojima, Eduardo Franzotti Sant'Anna

{"title":"Diagnostic performance of ClinCheck, Dolphin Imaging, and 3D Slicer software for Bolton discrepancy analysis.","authors":"Thalita Teixeira Santana, Flávio Copello, Guido Artemio Marañón-Vásquez, Lincoln Issamu Nojima, Eduardo Franzotti Sant'Anna","doi":"10.2319/022724-156.1","DOIUrl":"10.2319/022724-156.1","url":null,"abstract":"Objectives: To evaluate the diagnostic performance of ClinCheck, Dolphin Imaging orthodontic software, and 3D Slicer for the analysis of Bolton discrepancy (BD).Materials and methods: Fifty-five pairs of early-stage digital models of patients treated with Invisalign were printed to measure the BD by manual method with a digital caliper (gold standard). The discrepancy values calculated by ClinCheck were obtained. In addition, the sample STL files were measured using Dolphin Imaging and 3D Slicer software to obtain BD values. To assess reliability, precision, and accuracy of the methods, intraclass correlation coefficients (ICCs), Dahlberg's formula, paired t-tests, and the Bland-Altman method were used, respectively. Repeated-measures analysis of variance with Bonferroni post hoc test was used to assess the difference between groups.Results: The three methods showed reliable measurements (ICC ≥ 0.7), with the values of anterior Bolton slightly higher than overall Bolton. Measurements for the anterior Bolton showed higher precision (Dahlberg's formula 0.65, 0.70, and 0.55) than those for the overall Bolton. For anterior Bolton, only the measurements obtained by ClinCheck and Dolphin Imaging were accurate (P > .05, no proportion bias), while for overall Bolton, all groups had a significant difference. The Bland-Altman plots demonstrated no consistency for anterior Bolton measurements when 3D Slicer was used and for the overall Bolton.Conclusions: ClinCheck and Dolphin Imaging showed accuracy to quantify anterior BD. For the overall Bolton measurements, ClinCheck showed a statistical difference from the manual assessment but without relevant clinical significance.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":" ","pages":"51-56"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11662356/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142335561","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

In vitro measurement of the initial forces and moments generated for a curve of Spee malocclusion with labial and lingual archwire forms. Spee型唇、舌弓形错牙合曲线初始力和力矩的体外测量。

The Angle orthodontist Pub Date : 2025-01-01 DOI: 10.2319/050224-349.1

Silas Yeung, Brandon Owen, Giseon Heo, Jason P Carey, Paul W Major, Dan L Romanyk

{"title":"In vitro measurement of the initial forces and moments generated for a curve of Spee malocclusion with labial and lingual archwire forms.","authors":"Silas Yeung, Brandon Owen, Giseon Heo, Jason P Carey, Paul W Major, Dan L Romanyk","doi":"10.2319/050224-349.1","DOIUrl":"10.2319/050224-349.1","url":null,"abstract":"Objectives: To compare the biomechanics of labial and lingual fixed orthodontic treatment options for a simulated curve of Spee malocclusion.Materials and methods: An in vitro electromechanical orthodontic simulator was used to measure the three-dimensional forces and moments on each tooth of a mandibular arch. Labial and lingual brackets, both with 0.018-inch slot sizes, were bonded to mechanical teeth. Three archwire forms were considered: labial straight, lingual straight, and lingual mushroom. The simulator was set in a passive levelled position with 0.016-inch × 0.022-inch stainless steel archwires, then teeth were moved to a curve of Spee maloclussion with the first premolar intruded 1.5 mm and the canine and second premolar intruded 0.75 mm. Two-way mixed multivariate analysis of variance (α = 0.05) was used to compare forces and moments generated among the three archwires.Results: Statistical differences were found in 55 of 63 comparisons of forces and moments between archwire types for each tooth around the arch. The lowest force magnitudes were measured for labial straight archwires at each tooth position. The lateral incisor experienced the largest gingival forces with all archwire forms. The first premolar and first molar experienced labial-lingual crown tipping moments in opposite directions between labial and the two lingual archwire forms.Conclusions: Biomechanical differences between labial, lingual straight, and lingual mushroom treatment modalities for the correction of curve of Spee misalignments were elucidated. Labial straight archwire exerted the lowest force magnitudes overall. For both lingual archwire forms, the labial-lingual inclination of the first premolar could be highly variable during levelling.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":"95 1","pages":"35-42"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11662361/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142848773","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 accuracy of digital indirect bonding vs. conventional systems: a randomized clinical trial. 评估数字间接粘接与传统系统的准确性：随机临床试验。

The Angle orthodontist Pub Date : 2025-01-01 DOI: 10.2319/030624-179.1

Eloisa Peixoto Soares Ueno, Teresa Cristina Alvez da Silva Gonzalez de Carvalho, Lylian Kazumi Kanashiro, Weber Ursi, Israel Chilvarquer, José Rino Neto, João Batista de Paiva

{"title":"Evaluation of the accuracy of digital indirect bonding vs. conventional systems: a randomized clinical trial.","authors":"Eloisa Peixoto Soares Ueno, Teresa Cristina Alvez da Silva Gonzalez de Carvalho, Lylian Kazumi Kanashiro, Weber Ursi, Israel Chilvarquer, José Rino Neto, João Batista de Paiva","doi":"10.2319/030624-179.1","DOIUrl":"10.2319/030624-179.1","url":null,"abstract":"Objectives: To compare the accuracy and chair time of self-ligating brackets using direct bonding, traditional indirect bonding (IB), and computer-aided design/computer-aided manufacturing (CAD/CAM) IB techniques after orthodontic leveling and alignment.Materials and methods: Forty-five patients were randomly assigned to three bonding groups (G1 [n = 15], G2 [n = 15], and G3 [n = 15]). Evaluation after the alignment and leveling phases used two parameters of the objective grading system of the American Board of Orthodontics for root parallelism and posterior marginal ridges, assessed using panoramic radiographies (PR I and PR II), a digital model, and a plaster model. Blinding was only applied for outcome assessment. No serious harm was observed except for gingivitis associated with plaque accumulation.Results: Although G3 showed better numerical results, they were not statistically significant in the radiographic or model evaluations (P > .001). Mean chair time was significantly shorter in G3 (1.1 ± 11.8 min) vs. G1 (56.7 ± 7.3 min) and G2 (52.8 ± 8.3 min; P < .001).Conclusions: The CAD/CAM IB system for self-ligating brackets was as effective as conventional methods, with a shorter chair time.","PeriodicalId":94224,"journal":{"name":"The Angle orthodontist","volume":" ","pages":"3-11"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11662360/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142402544","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