Angle Orthodontist最新文献_第8页

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

Morphometric and volumetric analysis of the proximity between the incisive canal and maxillary central incisors during anterior retraction: a retrospective cone-beam computed tomography study. 前牙牵引过程中切管与上颌中切牙之间距离的形态和体积分析：一项回顾性锥形束计算机断层扫描研究。

IF 3 2区医学

Angle Orthodontist Pub Date : 2023-03-01 DOI: 10.2319/060222-406.1

Narubhorn Ongprakobkul, Yuji Ishida, Sirima Petdachai, Aiko Ishizaki, Chiyo Shimizu, Paiboon Techalertpaisarn, Takashi Ono

{"title":"Morphometric and volumetric analysis of the proximity between the incisive canal and maxillary central incisors during anterior retraction: a retrospective cone-beam computed tomography study.","authors":"Narubhorn Ongprakobkul, Yuji Ishida, Sirima Petdachai, Aiko Ishizaki, Chiyo Shimizu, Paiboon Techalertpaisarn, Takashi Ono","doi":"10.2319/060222-406.1","DOIUrl":"10.2319/060222-406.1","url":null,"abstract":"Objectives: To elucidate the relationships and factors affecting the proximity between the incisive canal (IC) and maxillary central incisors and to predict the probable outcomes after anterior tooth retraction using cone beam computed tomography (CBCT).Materials and methods: Retrospective CBCT data taken before and after maxillary anterior retraction in 36 patients were used in this study. The incisive canal length (ICL), maxillary central incisor length (TL), angles between the palatal plane and axes of the maxillary alveolar border (θ1), IC (θ2), and maxillary central incisor (θ3), retraction distance (TDE), distance from the maxillary central incisors to the IC (D), cross-sectional area of the IC (CSA), and volume of the IC were evaluated. Comparison of the parameters between contact and noncontact groups were examined. Logistic regression was performed to analyze the probable outcome prediction.Results: All parameters significantly decreased after anterior retraction, except for the ICL. Eighteen roots in 12 patients contacted the IC. The θ1, θ2, θ3, and D values at all levels were significantly lower, whereas the TDE, midlevel and oral opening CSA, and volume were significantly higher in the contact group compared with the noncontact group. The larger the pretreatment θ1 and θ3 were, the higher was the chance of incisors not contacting the IC.Conclusions: Maxillary central incisors not contacting the IC after anterior retraction was positively associated with larger degrees of pretreatment maxillary alveolar bone angle and maxillary central incisor angle.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":"159-167"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9933555/pdf/i1945-7103-93-2-159.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9376936","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

Bone thickness and height of the buccal shelf area and the mandibular canal position for miniscrew insertion in patients with different vertical facial patterns, age, and sex. 不同垂直面部形态、年龄和性别患者的骨厚度、颊面骨架区域的高度以及微型螺钉插入时的下颌管位置。

IF 3 2区医学

Angle Orthodontist Pub Date : 2023-03-01 DOI: 10.2319/060822-412.1

Vitor Mascarenhas Eto, Natália Couto Figueiredo, Luiz Fernando Eto, Gabriel Maia Azevedo, Amaro Ilídio Vespasiano Silva, Ildeu Andrade

{"title":"Bone thickness and height of the buccal shelf area and the mandibular canal position for miniscrew insertion in patients with different vertical facial patterns, age, and sex.","authors":"Vitor Mascarenhas Eto, Natália Couto Figueiredo, Luiz Fernando Eto, Gabriel Maia Azevedo, Amaro Ilídio Vespasiano Silva, Ildeu Andrade","doi":"10.2319/060822-412.1","DOIUrl":"10.2319/060822-412.1","url":null,"abstract":"Objectives: The objectives of this article were the following: (1) to analyze bone thickness and height (BTH) of the buccal shelf area (BS) quantitatively in four different potentially eligible sites for miniscrew insertion; (2) to compare and contrast BTH and the changes in spatial position of the inferior alveolar nerve canal (IANC); and (3) to assess differences with age among vertical facial patterns (hypodivergent, normodivergent, and hyperdivergent) and sex.Materials and methods: Cone-beam computed tomography scans of 205 individuals (110 women and 95 men) were divided into groups according to age, vertical facial pattern, and sex. The BTH of the BS and the BTH to the IANC were measured in the mesial and distal roots of the first and second molars.Results: BTH progressively increased in a posterior direction (P < .001), while BTH to the IANC increased and decreased (P < .001) for thickness and height, respectively, in the same direction in all age groups, for the three different vertical facial patterns, and in both sexes. Women showed significantly less BTH to the IANC (P < .002). Hypodivergent patients had greater BTH (P < .024) and a smaller bone height to the IANC (P < .018) only in the first molar region. Patients over 40 years of age had lower bone height in the second molar area (P < .003).Conclusions: The ideal place for BS miniscrew insertion is the region of the distal root of the second molars, regardless of facial pattern, sex, and age. The BS in women has less BTH and less BTH to the IANC.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":"185-194"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9933561/pdf/i1945-7103-93-2-185.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9376990","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

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

Overbite recognition and factors affecting esthetic tolerance among laypeople. 非专业人士对咬合过度的认识以及影响美学容忍度的因素。

IF 3 2区医学

Angle Orthodontist Pub Date : 2023-03-01 DOI: 10.2319/051822-367.1

Nattapon Boonchuay, Udom Thongudomporn, Chidchanok Leethanakul, Steven J Lindauer, Nattaporn Youravong

{"title":"Overbite recognition and factors affecting esthetic tolerance among laypeople.","authors":"Nattapon Boonchuay, Udom Thongudomporn, Chidchanok Leethanakul, Steven J Lindauer, Nattaporn Youravong","doi":"10.2319/051822-367.1","DOIUrl":"10.2319/051822-367.1","url":null,"abstract":"Objectives: To determine recognition ability and the levels of esthetic tolerance of deep bite and anterior open bite (AOB) among laypeople and investigate the factors affecting levels of tolerance.Materials and methods: Using a questionnaire, laypeople (N = 100) were examined, and overbite was measured. They were tested for whether they recognized deep bite and AOB. Esthetic tolerance thresholds for deep bite and AOB were selected by incremental depiction in grayscale images. Stepwise logistic regression analyses were used to quantify the effect of recognition and other factors (age, sex, education level, occupation, history of orthodontic treatment, interest in orthodontic treatment or retreatment, and overbite presence) affecting the tolerance of overbite problems (α = 0.05).Results: Of the participants, 55% and 94% recognized deep bite and AOB, respectively. Participants with a deep bite were significantly more likely to esthetically tolerate deep bite compared with those without a deep bite (odds ratio [OR], 3.57; 95% confidence interval [CI], 1.29-9.89). Participants who recognized a deep bite problem had significantly lower esthetic tolerance to deep bite compared with participants who did not recognize a deep bite (OR, 0.17; 95% CI, 0.06-0.45). None of the other eight chosen factors significantly affected the tolerance level of AOB (P > .05).Conclusions: Participants with a deep bite or those who did not recognize a deep bite had significantly higher esthetic tolerance of deep bite than those without or those who recognized the problem (P < .05).","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":"205-212"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9933563/pdf/i1945-7103-93-2-205.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10815478","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

Unilateral condylar hyperplasia treated with simultaneous 2-jaw orthognathic surgery and posterior segmental osteotomy. 同时采用双颚正颌手术和后段截骨术治疗单侧髁状突增生。

IF 3 2区医学

Angle Orthodontist Pub Date : 2023-03-01 DOI: 10.2319/060122-401.1

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

{"title":"Unilateral condylar hyperplasia treated with simultaneous 2-jaw orthognathic surgery and posterior segmental osteotomy.","authors":"Seong-Sik Kim, Kyu-Sung Jung, Yong-Il Kim, Soo-Byung Park, Sung-Hun Kim","doi":"10.2319/060122-401.1","DOIUrl":"10.2319/060122-401.1","url":null,"abstract":"A 25-year-old woman presented with left condylar hyperplasia, canting-type facial asymmetry, mandibular prognathism, and arch width discrepancy. Bone scintigraphy confirmed the inactive status of the condyle, and the temporomandibular joint functioned within the normal range; thus, orthognathic surgery without condylectomy was performed. To correct facial asymmetry successfully through orthognathic surgery, sufficient dentoalveolar decompensation must be achieved in the presurgical orthodontic phase. In cases of canting-type facial asymmetry, teeth on the nondeviated side are extruded as dentoalveolar compensation. Therefore, vertical decompensation is required for intrusion of the extruded teeth. A miniscrew and resin build-ups were used for the intrusion of teeth, and posterior segmental osteotomy was simultaneously performed with orthognathic surgery for further intrusion. The canting-type facial asymmetry was notably corrected through successful vertical decompensation and close cooperation between orthodontists and maxillofacial surgeons. After 2 years of retention, the treatment results remained stable.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":"236-252"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9933568/pdf/i1945-7103-93-2-236.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10821381","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

Angular and positional changes of the maxillary third molars after orthodontic treatment with different premolar extraction patterns. 采用不同前磨牙拔除模式进行正畸治疗后，上颌第三磨牙的角度和位置变化。

IF 3 2区医学

Angle Orthodontist Pub Date : 2023-03-01 DOI: 10.2319/013022-90.1

Maria R Mang de la Rosa, Lisa J Langer, Fotis Kouroupakis-Bakouros, Paul-Georg Jost-Brinkmann, Theodosia N Bartzela

{"title":"Angular and positional changes of the maxillary third molars after orthodontic treatment with different premolar extraction patterns.","authors":"Maria R Mang de la Rosa, Lisa J Langer, Fotis Kouroupakis-Bakouros, Paul-Georg Jost-Brinkmann, Theodosia N Bartzela","doi":"10.2319/013022-90.1","DOIUrl":"10.2319/013022-90.1","url":null,"abstract":"Objectives: To evaluate the angular and positional changes of the maxillary second (M2) and third molars (M3) after orthodontic premolar extraction treatment according to patient skeletal classification and growth pattern.Materials and methods: Panoramic radiographs of patients treated with extraction of the first or second premolars (n = 116) and patients treated without extraction (n = 92), taken before orthodontic treatment (T0) and after completion of multibracket appliance therapy (T1) were analyzed. Angle classification, growth pattern, crowding, and incisor inclination were recorded. The palatal (PP) and interorbital planes (IOP) were used as reference lines. Changes in the M3 angulation relative to PP and IOP (T0-T1) within the same group were evaluated with paired t-tests. One-way analysis of variance (ANOVA) and Kruskal-Wallis tests were used for comparisons between the groups. Accordingly, pairwise comparisons were performed with Mann-Whitney U-tests or independent t-tests (P < .05).Results: The M3 angulation related to the PP and the IOP did not differ significantly between the extraction and nonextraction groups. The M2 angulation improved in the premolar extraction group between T0 and T1 (M2/PP, P < .001). According to Archer's classification, the change in the vertical position of M3 differed significantly between the extraction and nonextraction groups (P < .001).Conclusions: The angulation of M3 improved over time regardless of the extraction decision. The vertical eruption pattern of M3 was positively influenced only in the extraction group. M2 became significantly more upright in the orthodontic extraction treatment groups.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":"135-143"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9933569/pdf/i1945-7103-93-2-135.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10814657","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

A quantitative analysis of macrophage-colony-stimulating factor in peri-miniscrew implant crevicular fluid before and after orthodontic loading. 正畸前后种植体周围缝隙液中巨噬细胞集落刺激因子的定量分析

IF 3 2区医学

Angle Orthodontist Pub Date : 2023-03-01 DOI: 10.2319/062322-445.1

Sakshi Katyal, Om Prakash Kharbanda, Ritu Duggal, Vilas D Samrit

{"title":"A quantitative analysis of macrophage-colony-stimulating factor in peri-miniscrew implant crevicular fluid before and after orthodontic loading.","authors":"Sakshi Katyal, Om Prakash Kharbanda, Ritu Duggal, Vilas D Samrit","doi":"10.2319/062322-445.1","DOIUrl":"10.2319/062322-445.1","url":null,"abstract":"Objectives: To analyze macrophage-colony-stimulating factor (M-CSF), a bone remodeling biomarker in the peri-miniscrew implant crevicular fluid (PMICF) after insertion and orthodontic loading.Materials and methods: This prospective study included 40 miniscrew implant (MSI) sites in 10 subjects undergoing fixed orthodontic mechanotherapy utilizing miniscrew anchorage. After dental alignment, miniscrews were inserted between the second premolar and first molar roots. After 21 days of insertion, MSIs were direct loaded with closed-coil springs (200 g force) for en masse retraction of anterior teeth. PMICF was collected with Periopaper™ strips from the gingival crevice around MSIs at six time points (T1-T6: 1 hour, 1 day, 21 days postinsertion, and 7, 21, and 42 days postloading). PMICF was quantified for M-CSF by enzyme-linked immunosorbent assay. Paired comparison of mean M-CSF concentrations before and after loading stages (T1-T6) was made using the Wilcoxon signed-rank test.Results: The mean M-CSF concentration showed a significant peak at T3 (21 days postinsertion; 12.646 pg/mL; T1 vs T3: P < .0001). After orthodontic loading of miniscrews, M-CSF levels increased to 13.570 pg/mL at T4 (7 days after loading; T1 vs T4: P < .001) and maintained at a plateau to T5 (21 days postloading; 11.994 pg/mL). However, the difference between preloading and postloading was not statistically significant (T3 vs T4).Conclusions: The maximum M-CSF activity around MSIs was observed at around 3 weeks of miniscrew insertion, suggesting underlying bone remodeling after surgical injury. However, orthodontic force on MSIs did not cause any significant surge in M-CSF levels postloading.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":"222-227"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9933565/pdf/i1945-7103-93-2-222.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10814917","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

Use of a novel body mandibular plane (mental foramen-protuberance menti) in analyzing mandibular asymmetry compared with conventional border mandibular plane. 与传统的边界下颌平面相比，使用新型下颌体平面（心孔-突起menti）分析下颌不对称。

IF 3 2区医学

Angle Orthodontist Pub Date : 2023-03-01 DOI: 10.2319/072522-513.1

Ho-Jin Kim, Hyung-Kyu Noh, Hyo-Sang Park

{"title":"Use of a novel body mandibular plane (mental foramen-protuberance menti) in analyzing mandibular asymmetry compared with conventional border mandibular plane.","authors":"Ho-Jin Kim, Hyung-Kyu Noh, Hyo-Sang Park","doi":"10.2319/072522-513.1","DOIUrl":"10.2319/072522-513.1","url":null,"abstract":"Objectives: To compare a novel body mandibular horizontal plane (mental foramen-protuberance menti; Body-MHP) with the conventional border mandibular horizontal plane (gonion-menton [Me]; Border-MHP) to assess mandibular body inclination and dental compensation of skeletal Class III patients with and without facial asymmetry.Materials and methods: Retrospective data obtained from diagnostic cone-beam computed tomography of 90 skeletal Class III patients (mean age, 21.67 ± 2.93 years; range, 15.0-30.6 years) were divided into symmetry (n = 30) and asymmetry groups (n = 60). The asymmetry group was subdivided into roll (n = 30) and non-roll types (n = 30). The differences in body inclination and dental measurements (distance and angle) according to two mandibular planes (Body-MHP and Border-MHP) were assessed in the groups and subgroups.Results: Mandibular body inclinations relative to the Body-MHP were not different in the roll-type asymmetric mandible between the sides, while those relative to the Border-MHP were different (P < .001). For the mandibular first molar positions relative to the Border-MHP, the differences in vertical distance between the sides were undermeasured and the inclination differences were overmeasured when compared relative to the Body-MHP.Conclusions: The Body-MHP demonstrated better bilateral similarity in body inclination compared with the Border-MHP in patients with roll-type facial asymmetry. The novel body mandibular plane ensures an accurate diagnosis for tooth movement and jaw surgery, particularly in the roll-type asymmetric mandible.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":"195-204"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9933560/pdf/i1945-7103-93-2-195.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10817012","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

Changes in the condylar head after orthognathic surgery in Class III patients: a retrospective three-dimensional study. III 类患者正颌手术后髁状突头部的变化：一项回顾性三维研究。

IF 3 2区医学

Angle Orthodontist Pub Date : 2023-03-01 DOI: 10.2319/052922-394.1

Betul Nazli Gulcek, Elvan Onem Ozbilen, Sibel Biren

{"title":"Changes in the condylar head after orthognathic surgery in Class III patients: a retrospective three-dimensional study.","authors":"Betul Nazli Gulcek, Elvan Onem Ozbilen, Sibel Biren","doi":"10.2319/052922-394.1","DOIUrl":"10.2319/052922-394.1","url":null,"abstract":"Objectives: To evaluate the axial and dimensional changes of the condylar head after orthognathic surgery, including Le Fort I and bilateral sagittal split ramus osteotomies, and to assess condylar remodeling through three-dimensional (3D) surface superimposition.Materials and methods: Twenty-four patients (15 females, 9 males; mean age: 32.22 ± 6.92 years) with skeletal Class III deformity were included in the study. Cone-beam computed tomography data obtained in the preoperative (T0) and postoperative (T1) periods were examined using Mimics and 3-Matic software. The height, depth, and width of the condylar head and its angular changes were measured. The volumes of the 3D reconstructed models were calculated, and remodeling amounts were evaluated through regional surface superimposition. Statistical significance was set at P < .05.Results: Following the surgery, there was a significant decrease in the size of condyles (P < .05). An inward rotation of the condyles was found in the axial plane (T0: 79.60 ± 6.01°, T1: 76.6 ± 6.48°, P < .05). The maximum resorption, maximum apposition, mean remodeling, and mean absolute remodeling were -2.63 ± 1.23 mm, 1.15 ± 0.4 mm, -0.30 ± 0.34 mm, and 0.73 ± 0.43 mm, respectively. No correlation was found between the angular changes and remodeling parameters or linear and volumetric changes of the condylar head (P > .05).Conclusions: Condyles undergo a remodeling process with a resorptive character following orthognathic surgery, without clinically significant effects in the present study.","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":" ","pages":"168-175"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9933558/pdf/i1945-7103-93-2-168.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10815476","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