Abstract：
:The purpose of this study was to investigate the relationship between the pressure drop in the pharyngeal airway space (ΔPPAS) and the minimum cross-sectional area (minCSA) of the pharyngeal airway before and after mandibular setback surgery using computational fluid dynamics, in order to prevent iatrogenic obstructive sleep apnoea. Eleven patients with mandibular prognathism underwent bilateral sagittal split osteotomy for mandibular setback. Three-dimensional models of the upper airway were reconstructed from preoperative and postoperative computed tomography images, and simulations were performed using computational fluid dynamics. ΔPPAS and the minCSA of the pharyngeal airway were calculated, and the relationship between them was evaluated by non-linear regression analysis. In all cases, the minCSA was found at the level of the velopharynx. After surgery, ΔPPAS increased significantly and the minCSA decreased significantly. The non-linear regression equation expressing the relationship between these variables was ΔPPAS=3.73×minCSA-2.06. When the minCSA was <1cm2, ΔPPAS increased greatly. The results of this study suggest that surgeons should consider bimaxillary orthognathic surgery rather than mandibular setback surgery to prevent the development of iatrogenic obstructive sleep apnoea when correcting a skeletal class III malocclusion.
journal_name
Int J Oral Maxillofac Surgjournal_title
International journal of oral and maxillofacial surgeryauthors
Yajima Y,Oshima M,Iwai T,Kitajima H,Omura S,Tohnai Idoi
10.1016/j.ijom.2017.03.028subject
Has Abstractpub_date
2017-07-01 00:00:00pages
839-844issue
7eissn
0901-5027issn
1399-0020pii
S0901-5027(17)31399-1journal_volume
46pub_type
杂志文章abstract：:The aim of this study was to analyze and compare the long-term clinical outcomes of mature third molar autotransplantation in surgically created sockets and fresh extraction sockets with regard to survival and functional success rates. A total of 65 third molars with completely formed roots were autotransplanted in 60...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2016.12.007
更新日期：2017-04-01 00:00:00
abstract：:In magnetic resonance imaging (MRI) of the oral and maxillofacial region, where large amounts of fat are normally present, the high signal intensity of fat on T1-weighted images (T1WI) and the chemical-shift artifact have limited the utility of paramagnetic contrast agents. Eliminating fat signal by fat-suppression te...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(96)80084-1
更新日期：1996-12-01 00:00:00
abstract：:Le Fort I osteotomy fails in many cases to completely separate the pterygomaxillary junction and often results in fractures of the pterygoid bone and the tuberosity, which subsequently can cause complications. The objectives of this study were to describe the specifically developed Laster 'shark-fin' osteotome and to ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 临床试验,杂志文章,随机对照试验,评审
doi：10.1054/ijom.2001.0179
更新日期：2002-02-01 00:00:00
abstract：:Spontaneous herniation of the condylar head into the external auditory canal (EAC) through the foramen of Huschke is extremely rare, with approximately 30 cases reported in the international literature. The typical presentation is a constellation of non-specific symptoms including otalgia, temporomandibular joint (TMJ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2016.03.006
更新日期：2016-08-01 00:00:00
abstract：:The aim of this study was to assess the importance of immunohistochemical thymidylate synthase (TS) expression level as a prognostic marker in tongue cancer patients. In 140 patients with primary squamous cell carcinoma (SCC) of the tongue, intratumoural TS expression was evaluated by immunohistochemistry. The level o...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2005.07.022
更新日期：2006-03-01 00:00:00
abstract：:There is controversy in the literature regarding donor site morbidity following radial forearm flap harvesting. The aim of this study was to verify possible functional and aesthetic impairments at the donor site. Thirty-five patients who underwent maxillofacial reconstruction using radial forearm flap were asked to gi...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1054/ijom.2000.0005
更新日期：2001-02-01 00:00:00
abstract：:The titanium mandibular modular endoprosthesis fixed with polymethylmethacrylate cement in the medullary space of the mandible has been introduced in previous studies. However, the internal parts of these devices have been found to be prone to loosening and wound dehiscence. The current study introduces a newly design...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2013.09.014
更新日期：2014-06-01 00:00:00
abstract：:The use of a mandibular modular endoprosthesis after segmental resection of part of the body of the mandible was studied. This preliminary study was carried out on four pigs and four monkeys. The devices were made of a titanium alloy and were cemented in the prepared medullary spaces with polymethylmetacrylate cement....
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2008.07.021
更新日期：2008-10-01 00:00:00
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journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2009.10.024
更新日期：2010-03-01 00:00:00
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journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2009.12.007
更新日期：2010-02-01 00:00:00
abstract：:Transfusion transmitted virus (TTV) is a new DNA virus found in patients with post-transfusion hepatitis. The prevalence of this virus among dental patients has not been reported, therefore, the prevalence of TTV infection in consecutive dental inpatients was evaluated. TTV DNA was assayed by the polymerase chain reac...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1054/ijom.2000.0224
更新日期：2003-04-01 00:00:00
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journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章,评审
doi：10.1016/j.ijom.2009.01.019
更新日期：2009-07-01 00:00:00
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journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1054/ijom.2003.0460
更新日期：2004-03-01 00:00:00
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journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2011.06.016
更新日期：2011-12-01 00:00:00
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journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2014.11.009
更新日期：2015-03-01 00:00:00
abstract：:A case is reported of a 42-year-old female patient, who presented with clinical symptoms of Eagle's syndrome, radiographic evidence of marginally elongated styloid processes as well as markedly elongated lesser cornua of the hyoid. The symptoms were successfully treated by amputating the lesser cornua of the hyoid. Th...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章,评审
doi：10.1034/j.1399-0020.1999.285280503.x
更新日期：1999-10-01 00:00:00
abstract：:Conflict exists with respect to the type of pleomorphic adenoma (PA) most likely to recur and whether the possibility of recurrence can be determined by the histology of the lesion. In this study, specific clinical, histological features and treatment modalities were examined in 53 intra-oral PA's with respect to thei...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(89)80116-x
更新日期：1989-06-01 00:00:00
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journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2006.03.010
更新日期：2006-08-01 00:00:00
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journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
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journal_title：International journal of oral and maxillofacial surgery
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journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2008.09.009
更新日期：2009-02-01 00:00:00
abstract：:In 20 adult cleft patients, the influence of a Le-Fort-I-osteotomy and ventral-caudal advancement of the maxilla on nasal breathing was studied. An increase of nasal air flow in the majority of patients is due to an increase in the volume of nasal skeleton and/or in the nasolabial angle and alar nasal base. Rhinomanom...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
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abstract：:Obstructive sleep apnea (OSA) is a disorder characterized by repetitive, episodic collapse of the pharyngeal airway. Over the last two decades, understanding of the pathophysiology of sleep disordered breathing, which includes OSA, has improved. Once thought to be predominately related to anatomic constriction of the ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章,评审
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更新日期：2010-12-01 00:00:00
abstract：:The aim of this split-mouth, double-blind, randomized study was to determine whether pulsed electromagnetic field therapy (PEMF) can improve swelling and the management of pain after full-arch immediate loading implant surgery. Eleven patients were selected for the study. Each patient received four distal tilted impla...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章,随机对照试验
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更新日期：2016-03-01 00:00:00
abstract：:Hypoplastic-hypocalcified enamel of all permanent teeth and dysplasia of finger- and toe-nails were found in a 17-year-old Japanese male. Physical examination revealed no remarkable changes in skin, hair, sweat glands, bones, etc. Family history revealed the same abnormalities of teeth and nails in his mother's brothe...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(89)80132-8
更新日期：1989-04-01 00:00:00
abstract：:Lack of sufficient bone to place an implant at the functionally and aesthetically most appropriate position is a common problem, especially in the upper anterior jaw. A surgical technique is proposed to augment the alveolar ridge for vertical and horizontal defects through a localized alveolar osteotomy and interposit...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2007.05.006
更新日期：2007-10-01 00:00:00
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journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2008.11.024
更新日期：2009-02-01 00:00:00
abstract：:Langerhans' cell histiocytosis (LCH) can involve virtually any site and organ of the body, either as an isolated lesion or as a widespread systemic disease. Bone can be involved as a part of generalised disease or as a separate entity, formerly known as eosinophilic granuloma. The clinical cause of localised LCH (LLCH...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章,评审
doi：10.1016/j.ijom.2004.10.020
更新日期：2005-07-01 00:00:00
abstract：:A new therapy for the treatment of oral leukoplakia by 5-aminolevulinic acid (ALA) and photodynamic therapy (PDT) is presented. ALA, a precursor in the biosynthesis of haeme, induces the production of the endogenous photosensitizer protoporphyrin IX which can be used for PDT. Twelve patients, who had been suffering fr...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 临床试验,杂志文章
doi：10.1016/s0901-5027(98)80040-4
更新日期：1998-12-01 00:00:00
abstract：:The tissue reaction following the use of glass-ionomer and amalgam, as retrograde filling materials was investigated in an experimental study using 8 monkeys. After apicectomy of the upper central incisors, amalgam and glass-ionomer cement was used at random as retrograde filling material. 2 animals at a time were sac...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(87)80085-1
更新日期：1987-08-01 00:00:00
