Angle Orthodontist最新文献

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The Tip and Torque adjustable bracket as a new concept in design. Tip和Torque可调支架作为一种全新的设计理念。
IF 3.4 2区 医学
Angle Orthodontist Pub Date : 2022-05-01 DOI: 10.2319/061421-474.1
Ama Johal, Christoph Bourauel, Samir Moghanchi, Terry Dickerson, Paul Gaudin, Emma Louise Elliott
{"title":"The Tip and Torque adjustable bracket as a new concept in design.","authors":"Ama Johal,&nbsp;Christoph Bourauel,&nbsp;Samir Moghanchi,&nbsp;Terry Dickerson,&nbsp;Paul Gaudin,&nbsp;Emma Louise Elliott","doi":"10.2319/061421-474.1","DOIUrl":"https://doi.org/10.2319/061421-474.1","url":null,"abstract":"<p><strong>Objectives: </strong>To test a new concept in bracket design-the tip and torque adjustable bracket (TTAB)-to identify its integral ability to change both tip and torque.</p><p><strong>Materials and methods: </strong>The newly designed TTAB underwent independent testing using the orthodontic measurement and simulation system. The TTAB incorporated Roth tip and torque prescription values, with the unique quality of the bracket to enhance or reduce the innate prescribed values of tip (by either +10° or -10°) and torque (by either +7.5° or -7.5°). The TTAB was tested using both the incorporated standard Roth prescription on the rate of canine retraction (sliding mechanics), using 0.018-inch stainless-steel (SS) arch wire, and with alteration of tip values (-10° and +10°). Similarly, frictional measurements and torque evaluations using 0.019 × 0.025-inch SS arch wire were undertaken with the standard prescription and altered torque (+7.5° and -7.5°). In addition, a number of control investigations were performed. Differences were analyzed using analysis of variance.</p><p><strong>Results: </strong>The rate of observed tooth movement for the TTAB with its prescribed baseline values was comparable to that of the control brackets. Importantly, the alteration of TTAB tip to -10° and +10° significantly (P < .001) increased and reduced, respectively, the rates of canine retraction. In the alteration of torque, at +7.5° and -7.5°, the bracket delivered a moment of +9.3 (2.8) Nmm and -11.9 (3.8) Nmm, respectively, to the lateral incisor (P < .001).</p><p><strong>Conclusions: </strong>This in vitro study demonstrates a new concept in preadjusted edgewise bracket design, offering adjustable tip and torque, with the potential for expanded clinical scope.</p>","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":"92 3","pages":"380-387"},"PeriodicalIF":3.4,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9020388/pdf/i1945-7103-92-3-380.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39722332","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 reliability in orthodontic literature. 正畸文献可靠性评估。
IF 3.4 2区 医学
Angle Orthodontist Pub Date : 2022-05-01 DOI: 10.2319/081021-625.1
Richard E Donatelli, Ji-Ae Park, Yasser Murdi Abdullah Alghamdi, Nikolaos Pandis, Shin-Jae Lee
{"title":"Assessment of reliability in orthodontic literature.","authors":"Richard E Donatelli,&nbsp;Ji-Ae Park,&nbsp;Yasser Murdi Abdullah Alghamdi,&nbsp;Nikolaos Pandis,&nbsp;Shin-Jae Lee","doi":"10.2319/081021-625.1","DOIUrl":"https://doi.org/10.2319/081021-625.1","url":null,"abstract":"<p><strong>Objectives: </strong>To map the statistical methods applied to assess reliability in orthodontic publications and to identify possible trends over time.</p><p><strong>Materials and methods: </strong>Original research articles published in 2009 and 2019 in a subset of orthodontic journals were downloaded. Publication characteristics, including publication year, number of authors, single vs multicenter study, geographic origin of the study, statistician involvement, study category, subject category, types of reliability assessment, and statistical methods applied to assess reliability, were recorded. Descriptive statistics, Chi-square tests, and logistic regression analyses were performed to investigate associations between reliability analysis and study characteristics.</p><p><strong>Results: </strong>A total of 768 original research articles were analyzed. The most prevalent study category was observational (69%) with a statistician involved in 16% of studies. Overall, reliability was assessed in 47% of studies, and the most frequent methods applied to assess reliability were intraclass correlation coefficients or kappa statistics (60.4%). The odds of applying appropriate methods were greater in 2019 than in 2009 (odds ratio [OR]: 2.43; 95% confidence interval [CI]: 1.75, 3.37; P < .001). Involvement of a statistician resulted in greater odds of applying appropriate methods compared to no statistician involvement (OR: 1.88; 95% CI: 1.23, 2.87; P < .01).</p><p><strong>Conclusions: </strong>Over the past decade (2009 vs 2019), reliability assessment became more common in the orthodontic literature, and studies applying correct statistical methods to assess reliability significantly increased. This trend was more apparent in studies that involved a statistician, which may highlight the role of the statistician.</p>","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":"92 3","pages":"409-414"},"PeriodicalIF":3.4,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9020402/pdf/i1945-7103-92-3-409.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39874387","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
Activation and installation of orthodontic appliances temporarily impairs mastication. 启动和安装正畸装置会暂时影响咀嚼功能。
IF 3 2区 医学
Angle Orthodontist Pub Date : 2022-03-01 DOI: 10.2319/061221-469.1
Laís Duarte, Adriana Pinto Bezerra, Carlos Flores-Mir, Graziela De Luca Canto, Luciano José Pereira, Thais Marques Simek Vega Gonçalves
{"title":"Activation and installation of orthodontic appliances temporarily impairs mastication.","authors":"Laís Duarte, Adriana Pinto Bezerra, Carlos Flores-Mir, Graziela De Luca Canto, Luciano José Pereira, Thais Marques Simek Vega Gonçalves","doi":"10.2319/061221-469.1","DOIUrl":"10.2319/061221-469.1","url":null,"abstract":"<p><strong>Objectives: </strong>To investigate the masticatory (masticatory performance, bite force, swallowing threshold, muscle activity, and questionnaires) and nutritional (nutrient intake) impacts of the activation and/or installation of different orthodontic appliances (fixed labial, lingual appliances, and clear aligners).</p><p><strong>Materials and methods: </strong>Six electronic databases and gray literature were searched (up to May 2021) for relevant studies evaluating mastication and nutrition after activation/installation of orthodontic appliances. This review followed PRISMA guidelines and was registered at PROSPERO (CRD42020199510). The risk of bias (RoB 2 and ROBINS-I) and evidence quality Grading of Recommendations Assessment, Development, and Evaluation were analyzed.</p><p><strong>Results: </strong>Of 4226 recorded and screened, 15 studies were finally included. Masticatory performance (standardized mean difference [SMD]: 1.069; 95% coefficient interval [CI]: 0.619 to 1.518) and bite force (SMD: -2.542; 95% CI: -4.867 to -0.217) reduced in the first 24 to 48 hours of fixed labial appliance installation/activation, but they were both normalized after 30 days (P > .05). The swallowing threshold remained constant (P > .05). Nutritional intake was rarely reported but showed copper (P = .002) and manganese (P = .016) reductions, with higher calorie and fat intake (P < .05). Lingual appliances impacted chewing more than labial, and clear aligner wearers reported fewer chewing problems (P < .001). Low to very low levels of evidence were found.</p><p><strong>Conclusions: </strong>Based on low to very low levels of evidence, mastication was reduced during the first 24 to 48 hours of fixed labial appliance activation/installation, but it was transitory (up to 30 days). Due to insufficient data, the nutritional impact of orthodontic appliances was not conclusive.</p>","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":"92 2","pages":"275-286"},"PeriodicalIF":3.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8887415/pdf/i1945-7103-92-2-275.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10182543","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
Short-term skeletal and dentoalveolar effects of overexpansion. 过度扩张对骨骼和牙槽的短期影响。
IF 3.4 2区 医学
Angle Orthodontist Pub Date : 2022-01-01 DOI: 10.2319/032921-243.1
Arun K Bala, Phillip M Campbell, Larry P Tadlock, Emet D Schneiderman, Peter H Buschang
{"title":"Short-term skeletal and dentoalveolar effects of overexpansion.","authors":"Arun K Bala,&nbsp;Phillip M Campbell,&nbsp;Larry P Tadlock,&nbsp;Emet D Schneiderman,&nbsp;Peter H Buschang","doi":"10.2319/032921-243.1","DOIUrl":"https://doi.org/10.2319/032921-243.1","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate whether the amount of rapid maxillary expansion differentially affects the skeletal and dentoalveolar changes that occur.</p><p><strong>Materials and methods: </strong>This randomized controlled trial included 23 patients who had rapid maxillary expansion (RME). Subjects were randomly assigned to a conventional expansion control group (n = 12) or an overexpansion group (n = 11), who started treatment at 13.2 ± 1.5 and 13.8 ± 1 years of age, respectively. Cone beam computed tomography scans (11 cm) were obtained prior to rapid maxillary expander (RME) delivery and approximately 3.7 months later. Initial hand-wrist radiographs were used to determine the participants' skeletal maturity.</p><p><strong>Results: </strong>The RME screws were activated 5.6 ± 1.2 mm and 10.1 ± 0.6 mm in the conventional and overexpansion groups, respectively. Overexpansion produced significantly greater expansion of the nasal cavity (2.1X-2.5X), maxillary base (2.3X), buccal alveolar crest (1.4X), and greater palatine foramina (1.9X). Significantly greater intermolar width increases (1.8X) and molar inclination (2.8X) changes were also produced. The nasal cavity and maxillary base expanded 23%-32% as much as the screws were activated. Skeletal expansion was positively correlated with RME screw activation (R = 0.61 to 0.70) and negatively correlated (R = -0.56 to -0.64) with the patients' skeletal maturation indicators (SMIs). Together, screw activation and the patients' SMI scores explained 48%-66% of the variation in skeletal expansion.</p><p><strong>Conclusions: </strong>This pilot study shows that overexpansion produces greater changes than conventional expansion, with greater skeletal effects among less mature patients.</p>","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":"92 1","pages":"55-63"},"PeriodicalIF":3.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8691462/pdf/i1945-7103-92-1-55.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39308291","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: 2
Speech performance in adult patients undergoing Invisalign treatment. 接受隐形眼镜治疗的成人患者的语言表现。
IF 3.4 2区 医学
Angle Orthodontist Pub Date : 2022-01-01 DOI: 10.2319/122820-1037.1
Erin Corsi Fraundorf, Eustáquio Araújo, Hiroshi Ueno, Patricia Pigato Schneider, Ki Beom Kim
{"title":"Speech performance in adult patients undergoing Invisalign treatment.","authors":"Erin Corsi Fraundorf,&nbsp;Eustáquio Araújo,&nbsp;Hiroshi Ueno,&nbsp;Patricia Pigato Schneider,&nbsp;Ki Beom Kim","doi":"10.2319/122820-1037.1","DOIUrl":"https://doi.org/10.2319/122820-1037.1","url":null,"abstract":"<p><strong>Objectives: </strong>To assess speech performance of adult patients undergoing orthodontic treatment with Invisalign.</p><p><strong>Materials and methods: </strong>Twenty-four adult patients with Invisalign (Invisalign group: 6 men, 18 women; average age; 34.88 years) and 20 adult patients with fixed labial appliances (fixed group: 5 men, 15 women; average age; 38.85 years) were evaluated. Speech was recorded immediately before delivery of the first set of clear aligners or bonding of labial appliances (T0), immediately after delivery or bonding (T1), and 2 months after delivery or bonding (T2). Speech was evaluated via a combination of three auditory analyses: (1) objective acoustic analysis through digital sonography, (2) semiobjective assessment by six speech and language pathologists, and (3) subjective assessment patient questionnaire.</p><p><strong>Results: </strong>The objective acoustic analysis showed a statistically significant difference over time from T0 to T1, T1 to T2, and T0 to T2 for Invisalign patients. The semiobjective analysis revealed a significant speech alteration from T0 to T1 and T1 to T2 for both groups, and from T0 to T2 in the Invisalign group. The subjective analysis showed a significant difference between means of Invisalign and fixed group patient perception at both T1 and T2.</p><p><strong>Conclusions: </strong>Invisalign treatment significantly affected speech, and although patients experience some level of adaptation, speech does not return to normal after 2 months of treatment.</p>","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":"92 1","pages":"80-86"},"PeriodicalIF":3.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8691480/pdf/i1945-7103-92-1-80.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39329046","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: 3
Prediction of maxillary canine impaction using eruption pathway and angular measurement on panoramic radiographs. 利用爆发路径和全景x线片角度测量预测上颌犬牙嵌塞。
IF 3.4 2区 医学
Angle Orthodontist Pub Date : 2022-01-01 DOI: 10.2319/030121-164.1
Jong Hyun Shin, Sewoong Oh, Hyejin Kim, Eungyung Lee, Seung-Min Lee, Ching-Chang Ko, Yong-Il Kim
{"title":"Prediction of maxillary canine impaction using eruption pathway and angular measurement on panoramic radiographs.","authors":"Jong Hyun Shin,&nbsp;Sewoong Oh,&nbsp;Hyejin Kim,&nbsp;Eungyung Lee,&nbsp;Seung-Min Lee,&nbsp;Ching-Chang Ko,&nbsp;Yong-Il Kim","doi":"10.2319/030121-164.1","DOIUrl":"https://doi.org/10.2319/030121-164.1","url":null,"abstract":"<p><strong>Objectives: </strong>To compare the normal eruption pattern and angulation in impacted maxillary canines using panoramic radiographs to predict maxillary canine impaction.</p><p><strong>Materials and methods: </strong>Patients aged 6 to 15 years were classified into the normal eruption group (n = 229) and the impaction group (n = 191). At least two panoramic radiographs were taken in the normal eruption group during the eruption process of the maxillary canine. The growth pattern of the maxillary canine was analyzed using an XY coordinate system, with the tip of the maxillary lateral incisor as the origin and the tooth's long axis as the Y-axis and measurement of the relative position of the crown tip and angulation of the maxillary canine.</p><p><strong>Results: </strong>The crown tips of normally erupted maxillary canines were intensively distributed along the distal surface of the maxillary lateral incisor, while those of impacted canines were widely distributed. The angulations of the normally erupted canines increased as eruption increased along the lateral incisor and then decreased at the cervical point of the lateral incisor. The angulations of the impacted canines were scattered, with no uniform pattern.</p><p><strong>Conclusions: </strong>While using the normal eruption path of the maxillary canine and the pattern of change in angulation based on the distal surface of the maxillary lateral incisor, early intervention or regular follow-up is needed to prevent maxillary canine impaction.</p>","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":"92 1","pages":"18-26"},"PeriodicalIF":3.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8691482/pdf/i1945-7103-92-1-18.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39830373","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: 3
Smile microesthetics as perceived by dental professionals and laypersons. 牙科专业人士和外行所感知的微笑微美学。
IF 3.4 2区 医学
Angle Orthodontist Pub Date : 2022-01-01 DOI: 10.2319/020521-108.1
Sawsan A Alomari, Elham S Abu Alhaija, Ahed M AlWahadni, Akram K Al-Tawachi
{"title":"Smile microesthetics as perceived by dental professionals and laypersons.","authors":"Sawsan A Alomari,&nbsp;Elham S Abu Alhaija,&nbsp;Ahed M AlWahadni,&nbsp;Akram K Al-Tawachi","doi":"10.2319/020521-108.1","DOIUrl":"https://doi.org/10.2319/020521-108.1","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate and compare the perception of different dental professionals and laypersons toward altered gingival characteristics (microesthetics) and to identify those characteristics that are most negatively and positively rated.</p><p><strong>Materials and methods: </strong>A smiling photograph of a female dental student was selected and digitally manipulated to create changes in different microesthetic parameters. These altered images were rated by the following five groups: 120 orthodontists, 45 periodontists, 49 prosthodontists, 130 general dentists, and 172 laypersons. Smile esthetics scores were calculated, and comparisons between groups were performed using the univariate general linear model.</p><p><strong>Results: </strong>The presence of black triangles between the upper incisors was the most negatively rated, and the ideal smile was the most positively rated. Significant differences were detected in the rating scores among the different study groups (P < .05). Orthodontists, prosthodontists, and general dentists scored the presence of a black triangle in the smile as the least attractive, whereas periodontists and laypersons perceived the inflamed gingiva and pigmented gingiva as the least attractive, respectively. Dental specialists tended to give the altered smile images lower scores than the laypersons.</p><p><strong>Conclusions: </strong>The ideal smile and that with black triangles between the upper incisors were rated as the most and the least attractive smiles, respectively. Orthodontists, prosthodontists, and general dentists scored the presence of black triangles in the smile as the least attractive, whereas periodontists and laypersons perceived the inflamed gingiva and pigmented gingiva as the least attractive smiles, respectively. Dental specialists tended to give the altered smile images lower scores than the laypersons.</p>","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":"92 1","pages":"101-109"},"PeriodicalIF":3.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8691461/pdf/i1945-7103-92-1-101.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39414648","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: 4
Multiloop edgewise archwire treatment for a patient with a severe anterior open bite and amelogenesis imperfecta. 严重前牙开放咬合伴骨质发育不全患者的多环侧弓丝治疗。
IF 3.4 2区 医学
Angle Orthodontist Pub Date : 2022-01-01 DOI: 10.2319/032221-228.1
Ahmed I Masoud, T Peter Tsay
{"title":"Multiloop edgewise archwire treatment for a patient with a severe anterior open bite and amelogenesis imperfecta.","authors":"Ahmed I Masoud,&nbsp;T Peter Tsay","doi":"10.2319/032221-228.1","DOIUrl":"https://doi.org/10.2319/032221-228.1","url":null,"abstract":"<p><p>Amelogenesis imperfecta is a rare hereditary disorder that affects dental enamel and is often associated with an anterior open bite. Orthodontic treatment of a 16-year-old female patient with hypocalcified amelogenesis imperfecta and a 9-mm anterior open bite was presented. Radiographic examination revealed a steep mandibular plane angle, an increased lower face height, a Class II skeletal pattern, and a convex profile. Additionally, the patient had stainless steel crowns on all upper and lower posterior teeth and composite veneers on the upper anterior teeth. The patient was treated nonsurgically using a multiloop edgewise archwire (MEAW). MEAW mechanics allowed for successful correction of the anterior open bite, with significant reduction in the mandibular plane angle and improvement in the patient's profile. No fixed retainers were used, and the results remained stable 78 months after removal of orthodontic appliances. MEAW mechanics should be considered for patients with large anterior open bites, although this technique requires excellent patient compliance.</p>","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":"92 1","pages":"137-147"},"PeriodicalIF":3.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8691472/pdf/i1945-7103-92-1-137.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39424878","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: 2
Incisor position and alveolar bone thickness. 门牙位置和牙槽骨厚度。
IF 3.4 2区 医学
Angle Orthodontist Pub Date : 2022-01-01 DOI: 10.2319/022320-122.1
Will A Andrews, Wakas S Abdulrazzaq, Jeffrey E Hunt, Lucas M Mendes, Linda A Hallman
{"title":"Incisor position and alveolar bone thickness.","authors":"Will A Andrews,&nbsp;Wakas S Abdulrazzaq,&nbsp;Jeffrey E Hunt,&nbsp;Lucas M Mendes,&nbsp;Linda A Hallman","doi":"10.2319/022320-122.1","DOIUrl":"https://doi.org/10.2319/022320-122.1","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate incisor position and its relationship to alveolar bone in untreated optimal occlusions and in untreated Class II malocclusions.</p><p><strong>Materials and methods: </strong>Fifty-seven lateral cephalograms of individuals with naturally occurring optimal occlusions (mean age = 23 years) were used to assess positions of central incisors and their relationships to alveolar bone. Data were compared to a sample of 57 individuals with untreated Class II malocclusions with concurrent anterior-posterior (AP) skeletal discrepancies (mean age = 16.9 years).</p><p><strong>Results: </strong>Significant intergroup differences were found for AP jaw relationship, maxillary alveolar bone thickness, mandibular incisor inclination, maxillary incisor root distance to labial surface of alveolar bone, and mandibular incisor root apex distance to labial surface of alveolar bone. Small differences between females and males existed for several variables. In both samples, maxillary incisor roots were located closer to the labial surface of alveolar process than to the palatal surface by roughly a 2:1 ratio. Mandibular incisor root apices were generally equidistant from the labial and lingual surfaces of the alveolus in the optimal sample but closer to the lingual surface in the Class II sample.</p><p><strong>Conclusions: </strong>Maxillary incisors tend to occupy the anterior one-third of the alveolus in untreated individuals, regardless of AP interarch dental relationships or AP jaw relationships. Mandibular incisor root apices tend to be centered within the alveolus in untreated optimal occlusions but are more positively inclined, and their root apices are more posterior in untreated Class II malocclusions.</p>","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":"92 1","pages":"3-10"},"PeriodicalIF":3.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8691463/pdf/i1945-7103-92-1-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39314406","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: 5
Letter to the Editor. 给编辑的信。
IF 3.4 2区 医学
Angle Orthodontist Pub Date : 2022-01-01 DOI: 10.2319/1945-7103-92.1.151
Prateek Mathur, Mohit Sharma, Balakrishnan Jayan, Dinesh Chaudhary, Vipul Jain
{"title":"Letter to the Editor.","authors":"Prateek Mathur,&nbsp;Mohit Sharma,&nbsp;Balakrishnan Jayan,&nbsp;Dinesh Chaudhary,&nbsp;Vipul Jain","doi":"10.2319/1945-7103-92.1.151","DOIUrl":"https://doi.org/10.2319/1945-7103-92.1.151","url":null,"abstract":"","PeriodicalId":50790,"journal":{"name":"Angle Orthodontist","volume":"92 1","pages":"151"},"PeriodicalIF":3.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8691465/pdf/i1945-7103-92-1-151.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39830372","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
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