Results 61 to 70 of about 33,346 (312)

A Comparison of Three-Dimensional Printing Technologies on the Precision, Trueness, and Accuracy of Printed Retainers [PDF]

open access: yes, 2020
Purpose: The aim of this study was to evaluate the differences in the precision, trueness, and accuracy of 3D printed orthodontic clear retainers produced using printer systems with various printing technologies.
Naeem, Owais A
core   +2 more sources

Peri‐implant hypoxia as a potential barrier against ferroptotic mechanisms during peri‐implant diseases: A cross‐sectional study

open access: yesJournal of Periodontology, EarlyView.
Abstract Background Hypoxia modulates inflammation and oxidative stress through hypoxia‐inducible factor‐1α (HIF‐1α). Ferroptosis, an iron‐dependent cell death process, is regulated by glutathione peroxidase‐4 (GPX4) and involves lipid peroxidation markers like malondialdehyde (MDA).
Büşra Yılmaz   +5 more
wiley   +1 more source

Clinical and radiographic observation of the periodontium in patients undergoing orthodontic therapy: first twenty-seven months [PDF]

open access: yes, 1974
Thesis (MSD) --Boston University (Periodontics).Includes bibliographic references: leaves 84-89.Twenty-two male patients from 12-14 years of age were selected prior to active orthodontic therapy at Boston University School of Graduate Dentistry's ...
Blank, Barry S., McAraw, James R.
core  

Induced Ankylosis of a Primary Molar for Skeletal Anchorage in the Mandible as Alternative to Mini-Implants [PDF]

open access: yes, 2015
Background Mesial protraction of mandibular posterior teeth requires increased anchorage to avoid undesired tooth movements. Orthodontic mini-implants have become a popular and successful way to increase skeletal anchorage in such cases.
Angelopoulou, Matina V.   +3 more
core   +2 more sources

Epiglottis Collapse in Individuals With Obstructive Sleep Apnea

open access: yesWorld Journal of Otorhinolaryngology - Head and Neck Surgery, EarlyView.
ABSTRACT Objective Obstructive sleep apnea (OSA) is a common sleep disorder characterized by repeated upper airway collapse during sleep. The epiglottis, often overlooked in conventional assessments, has emerged as a site of significant obstruction in OSA.
Dan Chen   +11 more
wiley   +1 more source

In Vivo Alteration of Phase II Transformation Enzyme (GST) Levels by Stainless Steel Orthodontic Appliances

open access: yesMedicine Science, 2014
Orthodontic appliances includes bands, brackets and wires which are made up of stainless steel with the composition of roughly 8-12% nickel and 17-22% chromium and other trace metals.
Dilip Daniel Quadras,Krishna Nayak U S,Suchetha Kumari N,Vijay R   +1 more
doaj   +1 more source

Changes in Orthodontic Treatment Modalities in the Past 20 Years: Exploring the Link between Technology and Scientific Evidence [PDF]

open access: yes, 2013
Statement of the issue: Is there a link between the many perceived advances in orthodontic techniques/therapy and science in the past 20 years? The purpose of this paper is to take five topics and match the perceptions with the scientific evidence.
Bradley, T. Gerard
core   +1 more source

Chinese Guidelines for the Diagnosis and Surgical Treatment of Adult Obstructive Sleep Apnea (2024)

open access: yesWorld Journal of Otorhinolaryngology - Head and Neck Surgery, EarlyView.
ABSTRACT Obstructive sleep apnea (OSA) is a common chronic disorder characterized by abnormal breathing during sleeping. OSA can damage various organs throughout the body and is burdensome, both socially and economically. Moreover, as OSA has been increasingly studied in recent years, new evidence‐based guidelines for its diagnosis and surgical ...
Working Group of Guideline for the Diagnosis and Surgical Treatment of Adult OSA   +7 more
wiley   +1 more source

The effects of a common stainless steel orthodontic bracket on the diagnostic quality of cranial and cervical 3T-MR images: a prospective, case-control study [PDF]

open access: yes, 2017
OBJECTIVES: To evaluate the effect of orthodontic stainless steel brackets and two different types of archwires (stainless steel and nickel-titanium) on the diagnostic quality of 3T-MR images.
CANTISANI, VITO   +6 more
core   +1 more source

Orthodontics. Part 5: Appliance choices [PDF]

open access: yesBritish Dental Journal, 2004
There are bewildering array of different orthodontic appliances. However, they fall into four main categories of removable, fixed, functional and extra-oral devices. The appliance has to be selected with care and used correctly as inappropriate use can make the malocclusion worse.
Roberts-Harry, D, Sandy, J
openaire   +2 more sources

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