The tweed philosophy

Greenstein, Anat

doi:10.1016/s0096-6347(43)90310-2

Cited by 7 publications

(4 citation statements)

References 1 publication

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“…Classification systems describing vertical and/or anteroposterior (A-P) disharmony of the facial skeleton are often based on linear and angular cephalometric measurements (e.g., Björk, 1966;Greenstein, 1943;Jacobson, 1975). Of particular importance are: (a) Steiner's analysis (Proffit et al, 2019;Steiner, 1953) which defines A-P relationships of the maxilla and mandible based on the ANB angle (Point A-Nasion-Point B) and (b) Schudy's (1964) classification of vertical skeletal divergence which defines vertical relationships of the anterior and posterior face based on mandibular plane angle (angle between Sella-Nasion and Gonion-Menton planes).…”

Section: Classification Of Craniofacial Morphologymentioning

confidence: 99%

Craniofacial growth and morphology among intersecting clinical categories

Knigge

Hardin

Middleton

et al. 2022

The Anatomical Record

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Differential patterns of craniofacial growth are important sources of variation that can result in skeletal malocclusion. Understanding the timing of growth milestones and morphological change associated with adult skeletal malocclusions is critical for developing individualized orthodontic growth modification strategies. To identify patterns in the timing and geometry of growth, we used Bayesian modeling of cephalometrics and geometric morphometric analyses with a dense, longitudinal sample consisting of 15,407 cephalograms from 1,913 individuals between 2 and 31 years of age. Individuals were classified into vertical facial types (hyper-, normo-, hypo-divergent) and anteroposterior (A-P) skeletal classes (Class I, Class II, Class III) based on adult mandibular plane angle and ANB angle, respectively. These classifications yielded eight facial type-skeletal class categories with sufficient sample sizes to be included in the study. Four linear cephalometrics representing facial heights and maxillary and mandibular lengths were fit to standard double logistic models generating type-class category-specific estimates for age, size, and rate of growth at growth milestones. Mean landmark configurations were compared among type-class categories at four time points between 6 and 20 years of age. Overall, morphology and growth patterns were more similar within vertical facial types than within A-P classes and variation among A-P classes typically nested within variation among vertical types. Further, type-class-associated variation in the rate and magnitude of growth in specific regions identified here may serve as targets for clinical treatment of complex vertical and A-P skeletal malocclusion and provide a clearer picture of the development of variation in craniofacial form.

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Section: Classification Of Craniofacial Morphologymentioning

confidence: 99%

Craniofacial growth and morphology among intersecting clinical categories

Knigge

Hardin

Middleton

et al. 2022

The Anatomical Record

View full text Add to dashboard Cite

show abstract

“…O primeiro a incluir os incisivos inferiores no planejamento dos casos clínicos, como critério fundamental para a obtenção de uma oclusão normal, foi CHARLES H. TWEED, na década de 40 31,87,88,89 . Ele relatou que estes dentes deveriam formar cefalometricamente um ângulo de 90º com o osso basal.…”

Section: --Introdução Introduçãounclassified

“…A relação existente entre a inclinação axial do incisivo inferior e o ângulo formado pelo plano mandibular e o longo eixo do dente em questão, julga-se ser um dos mais acurados guias para o tratamento das más oclusões 31,48,51,87,88,89,90,91,92 .…”

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“…Neste caso, ocorreu uma diminuição em média de T 1 para T 2 de 6,556º. ,186º, proporcionando a verticalização destes dentes, isto mostra a tendência em seguir os valores preconizados das Análises de TWEED27,31,48,87,88,89,91,92 (IMPA -90º ± 5º) e de MARGOLIS50,51 (IMPA -90º ± 3º) no planejamento dos casos ortodônticos para promover o alcance da estética facial65,90 . A realização das extrações dentárias, logicamente, permite uma maior magnitude das mudanças de posição e inclinação dentária44 , permitindo o estabelecimento de posições mais verticais destes dentes.O incremento de T 2 para T 3 do IMPA, porém não estatisticamente significante, sugere uma leve tendência dos incisivos inferiores em retornarem às angulações que ocupavam antes do início do tratamento, durante o período póstratamento, corroborando os achados de COLE20 , MILLS53,54 e VILELLA; MUCHA95 .…”

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