Short-term and long-term treatment outcomes with Class III activator

Ryu, Hyo Kyung; Chong, Hyun Jeong; An, Ki-Yong; Kang, Kyung‐Hwa

doi:10.4041/kjod.2015.45.5.226

Cited by 6 publications

(5 citation statements)

References 19 publications

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“…Studies have suggested that the posttreatment outcome of orthopedic treatment may not be stable depending on the residual growth. 76 When unfavorable growth is expected, treatment would not be initiated in the early phase or would be delayed until completion of growth, because a discrepancy between maxillary, mandibular, and skeletal base growth during the pubertal phase can result in relapse of the corrections which have been achieved earlier, 77 and as a result some patients ultimately may require orthognathic surgery at a later stage. This is a disappointing situation, not only for patients but also for clinicians, and may be prevented if accurate prediction of the eventual prognosis of early orthopedic treatment for skeletal Class III malocclusion would have been possible before commencing and executing treatment.…”

Section: Assessment Of Growth and Prognosis In Class III Patientsmentioning

confidence: 99%

Developing Class III malocclusions: challenges and solutions

Zere¹,

Chaudhari²,

Sharan³

et al. 2018

CCIDE

112

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Class III malocclusion represents a growth-related dentofacial deformity with mandibular prognathism in relation to the maxilla and/or cranial base. Its prevalence varies greatly among and within different races, ethnic groups, and geographic regions studied. Class III malocclusion has a multifactorial etiology, which is the expression of a moderate distortion of normal development as a result of interaction between innate factors or genetic hereditary with environmental factors. Various skeletal topographies of underlying Class III malocclusion are due to discrepancy in the maxillary and mandibular growth along with vertical and/or transverse problems apart from sagittal malformations. The spectrum of complications for Class III malocclusion ranges in gravity from dentoalveolar problems with functional anterior shift of the mandible to true skeletal problems with serious maxillomandibular discrepancies, which makes its diagnosis highly challenging in growing children. Concern regarding early treatment and the need for interceptive care in the case of Class III malocclusion has always been a dilemma, knowing that not all problems will be solved in these cases until maxillomandibular growth is further completed, and the long-term outcome of various treatment approaches may depend on the growth tendency of an individual. Interceptive treatment of Class III malocclusions should be undertaken if it prevents damage to the oral tissues and/or significantly reduces the amount or severity of future orthodontic and surgical interventions. This paper presents an overview of developing Class III malocclusion, with the emphasis on challenges and their solutions based on the best current available evidence.

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Section: Assessment Of Growth and Prognosis In Class III Patientsmentioning

confidence: 99%

Developing Class III malocclusions: challenges and solutions

Zere¹,

Chaudhari²,

Sharan³

et al. 2018

CCIDE

112

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“…Esto fue estudiado en profundidad por Buschang, quien observó el crecimiento craneofacial de pacientes Clase III entre 6 y 16 años de edad, concluyendo que el crecimiento anteroposterior mandibular se va acumulando en el tiempo obteniendo como resultado, mandíbulas más grandes y prominentes (19) , lo que indicaría que la intercepción ortopédica temprana de esta maloclusion, juega un rol fundamental en la redirección favorable del crecimiento craneofacial. Si bien, el pronóstico del tratamiento ortopédico es favorable cuando el tratamiento se indica antes del peak de crecimiento puberal (20) , algunos autores han sugerido que el resultado posterior al tratamiento ortopédico puede no ser estable dependiendo del crecimiento residual (21) . Esta es una situación decepcionante y podría prevenirse si la predicción individual del pronóstico de tratamiento ortopédico, hubiera sido posible antes de comenzar y ejecutar el tratamiento.…”

Section: Discussionunclassified

Análisis de los fundamentos biológicos del Sistema Ertty Gap III®

Ramos-Castro¹,

Bacchiega-Bustos²,

Vergara-Santoro³

et al. 2022

Int. j interdiscip. dent.

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Las maloclusiones clase III durante muchos años han sido un reto en ortodoncia, siendo reconocidas como un desafío diagnóstico y terapéutico para el clínico. En la mayoría de los casos, si no se realiza un tratamiento temprano, la cirugía ortognática se transforma en la única opción para establecer una oclusión correcta y mejorar las caracterÍsticas faciales. El objetivo principal de la intervención temprana, es crear un entorno más favorable para el crecimiento. A lo largo de la historia se han utilizado distintos aparatos ortopédicos para el tratamiento temprano de esta maloclusión, sin embargo se ha observado que muchas veces sus resultados son insuficientes o ineficaces. El Sistema Ertty Gap III ® , viene a revolucionar el enfoque con el cual se trataban las maloclusiones Clase III, orientando los efectos terapéuticos a la premaxila, la cual se pensaba inactiva como sitio de crecimiento. La evidencia actual respecto a este sistema es escasa, sin embargo, el uso de ortopedia de fácil manejo a un bajo costo económico, ofrece una alternativa terapéutica en etapas tempranas que permitiría crear un entorno más favorable para el crecimiento, la oclusión y la estética facial.

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“…A reliable reference landmark is an essential component of cephalometric analyses for orthodontic diagnosis, treat- ment planning, posttreatment evaluation, and anthropological studies. Many reference planes have been used, including the Frankfort horizontal plane, mid-sagittal plane, sellanasion plane, and facial plane [14]. Most of these planes are defined based on intracranial anatomical points, and the Frankfort horizontal plane has been the most widely used standard horizontal plane for reflecting the natural head position [4].…”

Section: Discussionmentioning

confidence: 99%

Use of the orbito-occipital line as an alternative to the Frankfort line

Park

Lee

et al. 2020

Anat Cell Biol

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Frankfort horizontal line, the line passing through the orbitale and porion, is one of the most widely used intracranial landmarks in cephalometric analysis. This study investigated the use of the orbito-occipital line extending from the orbitale to the external occipital protuberance as a novel horizontal line of the skull for substituting the Frankfort horizontal line. We evaluated the reproducibility of the new landmark and measured the angle between the orbito-occipital line and the Frankfort line. This study was conducted on 170 facial computed tomography (CT) scans of living adults from the Department of Plastic Surgery. After three-dimensionally reconstructed images were obtained from facial CT, the porion, orbitale, and external occipital protuberance were indicated by two observers twice. The angles between the orbito-meatal line (inferior orbital rim to porion; the Frankfort line) and the orbito-occipital line (inferior orbital rim to external occipital protuberance) were measured. There was no significant intraobserver or interobserver bias. The overall angle between the Frankfort line and orbito-occipital line was -0.5°±2.2° (mean±standard deviation). There was no statistically significant difference among side and sex. This study demonstrated good reproducibility of a new landmark-the external occipital protuberance-tested to replace the porion. The orbito-occipital line is a reliable, reproducible, and easily identifiable line, and has potential as a novel standard horizontal line to replace or at least supplement the Frankfort line in anthropological studies and certain clinical applications.

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Short-term and long-term treatment outcomes with Class III activator

Cited by 6 publications

References 19 publications

Developing Class III malocclusions: challenges and solutions

Developing Class III malocclusions: challenges and solutions

Análisis de los fundamentos biológicos del Sistema Ertty Gap III®

Use of the orbito-occipital line as an alternative to the Frankfort line

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