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 techniques can increase the value of contrast-enhanced MRI. The present study was designed to evaluate the utility and role of chemical-shift imaging for fat suppression in the detection of oral and maxillofacial lesions in 22 patients (17 with malignant tumors, two with benign tumors, and three with inflammation). The depiction of lesions on the postcontrast fat-suppression T1WI was compared with that of conventional pre- and postcontrast T1 and T2WI on a four-grade scale (grades 0-3). The postcontrast fat-suppression T1WI (average grade, 2.86) were significantly superior to the precontrast T1WI (0.82) and postcontrast T1WI (1.86) and T2WI (1.68). Postcontrast fat-suppression T1WI were particularly beneficial in the detection of central necrosis or extracapsular invasion of metastatic neck lymph nodes as well as in defining the lesion extent at fat-containing areas such as the bone marrow or cheek. These findings demonstrated that the fat-suppression technique is extremely useful in the delineation of oral and maxillofacial lesions without increase of the scan time or image postprocessing procedures.
journal_name
Int J Oral Maxillofac Surgjournal_title
International journal of oral and maxillofacial surgeryauthors
Kitagawa Y,Ishii Y,Kawamura Y,Hayashi K,Ogasawara T,Morihiro Hdoi
10.1016/s0901-5027(96)80084-1subject
Has Abstractpub_date
1996-12-01 00:00:00pages
457-62issue
6eissn
0901-5027issn
1399-0020journal_volume
25pub_type
杂志文章abstract：:The hamartoses are a large group of disorders with autosomal dominant inheritance or sporadic occurrence. The genes responsible for some have been localized to specific chromosomes and in several instances, genetic heterogeneity has been established. Thus neurofibromatosis and tuberous sclerosis are no longer single e...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章,评审
doi：10.1016/s0901-5027(06)80126-8
更新日期：1995-06-01 00:00:00
abstract：:The aim of the present review was to analyze the main clinical signs and symptoms observed in patients with thyroglossal duct cysts (TGDCs). Secondarily we investigated the outcomes following the different types of treatment of TGDCs in children and adults. Three selected strings were run on the PubMed database to ret...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.ijom.2014.07.007
更新日期：2015-01-01 00:00:00
abstract：:The effect of platelet-rich fibrin (PRF) in enhancing the healing after oral surgical interventions is still a matter of debate. The purpose of this study was to identify instances where PRF has been shown to be effective in oral surgical procedures. A comprehensive literature search was performed up to 2017 on PubMed...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章,meta分析
doi：10.1016/j.ijom.2018.07.007
更新日期：2019-03-01 00:00:00
abstract：:The admixture of clonidine or epinephrine to lidocaine for inferior alveolar nerve block was studied with regard to onset, duration, intensity of anaesthesia, postoperative analgesia, systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), heart rate (HR), ST segment depression > o...
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
doi：10.1016/j.ijom.2004.06.014
更新日期：2005-06-01 00:00:00
abstract：:The aim of this retrospective three dimensional (3D) computed tomographic analysis was to investigate the morphological airway changes in 17 obstructive sleep apnea (OSA) patients following bimaxillary rotation advancement procedures. Morphological changes of the nasal cavity and naso-, oro- and hypopharynx were analy...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2012.08.002
更新日期：2013-05-01 00:00:00
abstract：:Melnick-Needles Syndrome (MNS) is a congenital syndrome associated with severe architectural disorder of the skeletal system that can cause significant effects on the craniofacial skeleton including poor aesthetics, impaired speech and masticatory problems. The authors report a case of a female patient who experienced...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章,评审
doi：10.1016/j.ijom.2011.08.007
更新日期：2012-03-01 00:00:00
abstract：:The purpose of this prospective study was to evaluate survival and marginal bone loss at 10-year follow-up of implants inserted in completely edentulous arches and immediately loaded using multiple mucosa-supported stereolithographic surgical templates. The influence on marginal bone loss of the following variables wa...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2015.12.001
更新日期：2016-04-01 00:00:00
abstract：:Skeletal stability during the first year after mandibular advancement surgery and fixation using biodegradable self-reinforced poly-l-lactide (SR-PLLA) screws, without postoperative intermaxillary fixation, was studied in 25 patients by means of cephalometric measurements. The magnitude of advancement was on average, ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(98)80086-6
更新日期：1998-02-01 00:00:00
abstract：:A critical review of the literature about risks and benefits of the removal of impacted 3rd molar teeth is presented in 4 categories: risk of non-intervention, risk of intervention, benefit of non-intervention and benefit of intervention. There are well-defined criteria for removal of impacted 3rd molar teeth. Absolut...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章,评审
doi：10.1016/s0901-5027(05)80447-3
更新日期：1992-02-01 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 aim of this study was to evaluate the bone response to an oxidized titanium implant (Ox) and a calcium-incorporated oxidized titanium implant (Ca). A blasted titanium implant (Bl) was used as control. The implants were topographically characterized using an optical interferometer and placed: one in each distal fem...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2008.01.020
更新日期：2008-06-01 00:00:00
abstract：:A stressful event may be sufficient to challenge a strongly held set of assumptions about the world and the self. In some people this may lead to post-traumatic stress disorder (PTSD) and in others to positive psychological change (PPC), whereby a person's reactions to the challenge are beneficial. Little research has...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2017.09.010
更新日期：2018-05-01 00:00:00
abstract：:Sixty-seven patients, who were surgically treated for internal derangement of the temporomandibular joint (TMJ), were retrospectively examined. The patients were evaluated preoperatively by clinical and arthrographic examinations and these results were compared with findings at surgery. Partial or complete dislocation...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(97)80790-4
更新日期：1997-10-01 00:00:00
abstract：:A case of intraoral molluscum contagiosum involving the right distal alveolar bridge of an immunocompetent person is reported. A review of the literature, with only five previously published cases, revealed that involvement of the oral soft tissues is rare. ...
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
abstract：:The aim of this retrospective study was to analyse the outcome of alveolar distraction osteogenesis for the correction of vertical defects in a large series of 55 cases. The existing bone deficiencies were secondary to atrophy after periodontal disease or tooth extraction. The overall success rate of this technique wa...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2006.06.014
更新日期：2007-01-01 00:00:00
abstract：:The aim of this study was to evaluate the long-term survival of craniofacial implants and prostheses and to identify factors associated with failure in a cohort of patients. A 25-year retrospective analysis was conducted at Royal Melbourne Hospital. Data included demographic characteristics, age, site and cause of the...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2018.01.013
更新日期：2018-06-01 00:00:00
abstract：:This study investigated the association between hypoplastic condyles and disc displacements without reduction (DDw/oR). Consecutive patients with non-syndromic unilateral condylar hypoplasia were recruited and clinical, cone beam computed tomography (CBCT) and magnetic resonance imaging (MRI) data were acquired. Linea...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2019.09.004
更新日期：2020-07-01 00:00:00
abstract：:Better contact between AO miniscrews and the bone and greater resistance against torque are achieved in the human midface if the thread is not pretapped. This was demonstrated by 60 methacrylate fixed human midfacial bone sections and by 100 torque measurements. It is concluded that pretapping is not to be recommended...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(05)80569-7
更新日期：1990-02-01 00:00:00
abstract：:The optimal management of mandibular angle fractures remains controversial. The aim of this experimental study was to test the stability and resistance to mechanical force of a new titanium miniplate design. Thirty fresh sheep hemimandibles, sectioned at the angle region, were used to evaluate two plating techniques. ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2014.01.011
更新日期：2014-07-01 00:00:00
abstract：:The histological fate of abdominal dermis-fat grafts implanted into the temporomandibular joint (TMJ) following condylectomy was studied. 21 rabbits underwent left TMJ discectomies and condylectomies; 6 were controls (Group A; no graft used); 15 (Group B) had autogenous abdominal grafts transplanted into the left TMJ....
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2010.09.022
更新日期：2011-02-01 00:00:00
abstract：:Le Fort I osteotomy is commonly used to rectify craniofacial deformity in orthognathic surgery and it can be used in approaching a cranial base lesion. This technique has not been well documented in craniofacial penetrating trauma. This article describes a case of midface penetrating injury caused by a grinding wheel....
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2010.10.012
更新日期：2011-04-01 00:00:00
abstract：:Microvascular couplers have been introduced as an alternative method for anastomosis in mandibular reconstruction. This study included 64 patients who had undergone free flap reconstruction for mandibular defects and had been scheduled for follow-up at 1, 3, 6, and 12 months. After completion of the tumour resection a...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2015.07.011
更新日期：2015-10-01 00:00:00
abstract：:The long-term effects on periodontal tissues of impacted lower 3rd molar surgery have been investigated in a retrospective study comprising 51 cases. The postoperative examinations took place 2 and 4 years after the surgical treatment and included both clinical and radiographic variables. Assessments were made regardi...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(05)80077-3
更新日期：1990-12-01 00:00:00
abstract：:Oculodentodigital dysplasia (ODDD) is a rare, autosomal dominant pleiotropic disorder, caused by mutations in the Connexin 43 (Cx43 or GJA1) gene. Described here is the case of a 10-year-old girl with enamel hypoplasia, typical facies and mental delay, initially thought to be related to an unknown metabolic disorder. ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2007.03.004
更新日期：2007-09-01 00:00:00
abstract：:A case of peripheral calcifying odontogenic cyst is presented. The nature of the lesion as a neoplasm is discussed including review of the literature. The terminology proposed for this lesion is "dentinogenic ghost cell tumor." ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(87)80117-0
更新日期：1987-10-01 00:00:00
abstract：:The aim of this study was to biomechanically evaluate the primary stability of pure titanium orthodontic mini-implants, inserted into pre-drilled cavities of differing diameters. Mini-implants (1.2 mm diameter) were placed into 1.0 mm and 1.2 mm diameter cavities prepared in the mid-region of the bilateral hind leg fe...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2008.04.007
更新日期：2008-07-01 00:00:00
abstract：:Rehabilitation of the edentulous patient with atrophic ridges is a problem especially when compounded with a severe prognathic inter-arch relationship. It is difficult to rehabilitate these patients prosthetically without correction of the malrelation of the jaws. The established surgical techniques for correcting com...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2010.09.024
更新日期：2011-04-01 00:00:00
abstract：:Solitary bone cysts are benign osteolytic lesions rarely involving the mandibular condyle. They are considered pseudocysts due to the absence of epithelium and their pathogenesis is unknown. These lesions are also known with a variety of synonyms, such as traumatic bone cysts, simple bone cysts, haemorrhagic bone cyst...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2011.09.007
更新日期：2012-03-01 00:00:00
abstract：:This study was performed to evaluate the possibility of using reverse facial artery pedicled submandibular gland transfer for treating keratoconjunctivitis sicca. A reverse facial artery pedicled submandibular gland, including the duct, from a beagle dog was transplanted into the temporal region in the same animal. 99...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2008.07.013
更新日期：2008-11-01 00:00:00
abstract：:This case report documents one of the more unusual causes of a swelling in the preauricular region, a parotid sialocele. It illustrates the relationship of trauma to sialocele formation, while suggesting that most cases can be managed by a conservative regime. A suitable surgical solution is outlined for more persiste...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(98)80310-x
更新日期：1998-04-01 00:00:00
