Facemask performance during maxillary protraction: a finite element analysis (FEA) evaluation of load and stress distribution on Delaire facemask
نویسندگان
چکیده
منابع مشابه
Maxillary protraction using a hybrid hyrax-facemask combination
BACKGROUND The aim of this in study was the evaluation of treatment outcomes after using a hybrid hyrax-facemask combination in growing class III patients. METHODS Treatment of 16 children (mean age 9.5±1.3 years) was investigated clinically and by means of pre- and post-treatment cephalograms. Changes in sagittal and vertical, and dental and skeletal values were evaluated and tested for stat...
متن کاملComparison of two maxillary protraction protocols: tooth-borne versus bone-anchored protraction facemask treatment
BACKGROUND Protraction facemask has been advocated for treatment of class III malocclusion with maxillary deficiency. Studies using tooth-borne rapid palatal expansion (RPE) appliance as anchorage have experienced side effects such as forward movement of the maxillary molars, excessive proclination of the maxillary incisors, and an increase in lower face height. A new Hybrid Hyrax bone-anchored...
متن کاملUsing a facemask during anaesthesia
Anna Negus Anaesthetic Fellow Starship Hospital Grafton Auckland New Zealand INTRODUCTION The facemask has been used since the origins of anaesthesia and it remains an essential and versatile piece of equipment. It offers a simple, non-invasive method for delivering both oxygen and anaesthetic gases and vapours to the patient and it is widely used for both induction and maintenance of general a...
متن کاملStress Distribution in Four Restorative Methods in Endodontically Treated Maxillary Premolar: A 3D Finite Element Analysis
Introduction: the Restoration of endodontically treated teeth is critical, and the Awareness of stresses developed by oblique and vertical forces in restorative methods take a great role in treatment plans. Due to the anatomical shape and inherent form of the stress distribution premolars, could be lost by fractures. Some fractures such as vertical fracture which is probable in...
متن کاملOptimal force for maxillary protraction facemask therapy in the early treatment of class III malocclusion.
BACKGROUND The facemask is used to treat early class III malocclusion, in combination with expansion therapy. There is a great deal of controversy in literature regarding the effectiveness of protraction facemask treatment as studies report results anywhere from considerable changes to lack of any maxillary improvement. This controversy may be due to the fact that the process of placing the ort...
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ژورنال
عنوان ژورنال: Progress in Orthodontics
سال: 2018
ISSN: 2196-1042
DOI: 10.1186/s40510-018-0217-1