Changes in Pharyngeal Airway Dimensions Due to MARA Treatment in Class II Malocclusions PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Changes in Pharyngeal Airway Dimensions Due to MARA Treatment in Class II Malocclusions PDF full book. Access full book title Changes in Pharyngeal Airway Dimensions Due to MARA Treatment in Class II Malocclusions by James K. Dillehay. Download full books in PDF and EPUB format.
Author: James K. Dillehay
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: James K. Dillehay
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Min Gu
Publisher:
ISBN: 9781361038468
Category :
Languages : en
Pages :
Get Book Here
Book Description
This dissertation, "Functional Appliance Therapy and Upper Airway Dimensions" by Min, Gu, 辜岷, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: The aim of this study was to investigate the effects of functional appliance therapy on the upper airway dimensions of Chinese children. Firstly, associations between craniofacial characteristics and daytime sleepiness (a symptom of sleep disordered breathing [SDB]) were identified in an orthodontic clinic. The extra- and intra-oral craniofacial characteristics, and a self-completed Paediatric Daytime Sleepiness Scale were recorded in a group of 265 Chinese adolescents aged 11-17 years. The data demonstrated that a bilateral Class II molar relationship, increased overjet, hypertrophic tonsils and a relatively large tongue were positively associated with daytime sleepiness. The results implied that Class II malocclusion was a risk factor of SDB. Secondly, to derive upper airway cephalometric norms for Chinese children, lateral cephalograms of 425 randomly selected 12-year-old Chinese children from 10 schools in Hong Kong were used to establish sex-specific cephalometric norms for the upper airway. Ethnic and age differences were determined by comparing the norms with the results of 108 12-year-old Caucasian children and 74 Chinese adults, respectively. Thirdly, a retrospective study was conducted to investigate the effects of Herbst appliance therapy on the upper airway of different sexes. Pre- and post-treatment lateral cephalograms from 44 Herbst-treated adolescents were analysed. Longitudinal cephalometric data of 34 untreated adolescents were used as growth data for comparison. The results indicated that Herbst appliance therapy enlarged the upper airway dimensions at two different levels for girls and boys with Class II malocclusion. For girls, it was the retroglossal oropharynx, and for boys, it was the hypopharynx. The boys displayed a significantly greater increase in the anterior and posterior facial heights than the girls, potentially accounting for the level dissimilarities. Furthermore, the Herbst appliance improved the inclination of the soft palate and restricted growth of the nasopharynx in both the boys and girls. Finally, a randomised controlled trial was carried out to investigate changes in the upper airway dimensions and the sleep-related breathing disordered (SRBD) scale following functional appliance therapy. Twenty-six adolescents with Class II malocclusion were randomised to receive either Herbst or Twin Block appliance therapy. Lateral cephalograms, magnetic resonance imaging, and parents-completed 22-item SRBD scale were obtained at baseline and after functional appliance treatment. The results indicated that increases in upper airway dimensions - width, depth and area - were observed for most parameters and several reached statistical significance by one year of combined growth and functional appliance therapy. In addition, improvements in sleep-related behaviour were evident and significantly correlated with airway dimension changes. The significant difference between the effects of the Herbst and Twin Block appliances was only significant in lower anterior facial height, but not in upper airway structures. In conclusion, the results demonstrated that Class II malocclusion is associated with the paediatric SDB; and that both Herbst and Twin Block appliance therapies can increase the upper airway dimensions and improve the sleep-related breathing. Subjects: Orthodontic appliances Airway (Medicine) Malocclusion - Treatment
Author: Sunil D. Kapila
Publisher:
ISBN:
Category : Dental technology
Languages : en
Pages : 368
Get Book Here
Book Description
Author: Tiffany Rachelle McClaran
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Marcelo Kegler
Publisher:
ISBN:
Category : Malocclusion
Languages : en
Pages : 36
Get Book Here
Book Description
The purpose of the present study was to evaluate cepalometrically the overall changes produced by these treatment modalities (MARA and CombiHeadgear) and compare their treatment effects to each other and to an untreated class II control group.
Author: Chad R. Sears
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 43
Get Book Here
Book Description
Sixty orthodontics patients treated with fixed orthodontics were divided into two study groups. The experimental group (n = 30) required maxillary expansion to correct the deficiency in the palatal, and the control group (n = 30) had fixed orthodontic treatment only. Subjects age, gender, predominant mode of breathing, length of treatment and initial and final measurements of upper and lower pharyngeal airway were recorded. Results using Student t-test showed that age and gender were no statistically significant difference between the two groups (p = 0.2810). Mouth breathers distribution showed no statistically significant difference between the two groups (p = 0.7866). Upper pharyngeal airway increased an additional 0.77 mm in the expansion group which was statistically significant (Student's t-test, t = 2.492), while the lower pharyngeal airway showed no statistically significant difference (Student's t-test t = 1.041). In conclusion rapid maxillary expansion during orthodontic treatment had a positive affect on the upper pharyngeal airway, with no significant change on the lower airway.
Author: Hans Pancherz
Publisher: Quintessence Publishing (IL)
ISBN: 9781850971696
Category : Malocclusion
Languages : en
Pages : 0
Get Book Here
Book Description
This is a research-based book on the clinical use of the Herbst appliance in the management of Class 2 malocclusions. Different clinical problems and questions are addressed in the light of the corresponding research existing. Thus, in contrast to other Class 2 alternative treatments, the Herbst appliance approach is based on scientific research.
Author: Sandra Kahn
Publisher: Stanford University Press
ISBN: 1503606465
Category : Science
Languages : en
Pages : 267
Get Book Here
Book Description
There's a silent epidemic in western civilization, and it is right under our noses. Our jaws are getting smaller and our teeth crooked and crowded, creating not only aesthetic challenges but also difficulties with breathing. Modern orthodontics has persuaded us that braces and oral devices can correct these problems. While teeth can certainly be straightened, what about the underlying causes of this rapid shift in oral evolution and the health risks posed by obstructed airways? Sandra Kahn and Paul R. Ehrlich, a pioneering orthodontist and a world-renowned evolutionist, respectively, present the biological, dietary, and cultural changes that have driven us toward this major health challenge. They propose simple adjustments that can alleviate this developing crisis, as well as a major alternative to orthodontics that promises more significant long-term relief. Jaws will change your life. Every parent should read this book.
Author: Greg J. Huang
Publisher: John Wiley & Sons
ISBN: 1119289920
Category : Medical
Languages : en
Pages : 288
Get Book Here
Book Description
Evidence-Based Orthodontics, Second Edition retains important elements of the First Edition, with several new sections to improve its use as a quick and comprehensive reference. New updated edition of a landmark text that surveys the principles and practice of evidence-based orthodontics Offers practical strategies for professionals to incorporate EBO in their daily practices Presents brief summaries of the best evidence for a wide range of clinical topics Incorporates information from over 400 systematic reviews, listed by topic
