Abstract：
:The purpose of this study was to investigate how the characteristics of a poly-l-lactic acid mini-plate changed with dynamic loading in an environment with hydrolytic degradation. A mandible osteosynthesis model was prepared with specimen poly-l-lactic acid mini-plates to simulate sagittal splitting ramus osteotomy. The model was then subjected to dynamic loading, and changes in specimen shape and surface quality were observed. Specimen bending strength was then measured, and degree of hydrolytic degradation estimated. Neither dynamic loading nor degree of load clearly affected degree of hydrolytic degradation. The specimens maintained their original shape and bending strength for up to 4 weeks with dynamic loading of 40 N or less in an environment with hydrolytic degradation. At 8 weeks, under the same conditions, the specimens showed cracks or fractures, or both, together with a clear decrease in bending strength. The results suggest that dynamic loading causes cracking in a poly-l-lactic acid mini-plate, and that growth of these cracks decreases bending strength over time, leading to fatigue fracture.
journal_name
Int J Oral Maxillofac Surgjournal_title
International journal of oral and maxillofacial surgeryauthors
Mizuhashi H,Suga K,Uchiyama T,Oda Ydoi
10.1016/j.ijom.2007.09.178subject
Has Abstractpub_date
2008-02-01 00:00:00pages
162-9issue
2eissn
0901-5027issn
1399-0020pii
S0901-5027(07)00963-0journal_volume
37pub_type
杂志文章abstract：:The objective of this study is to retrospectively assess the clinical relevance, i.c. the event of a local recurrence, in patients surgically treated for tongue and floor of mouth squamous cell carcinoma when tumour cell are observed histopathologically at a distance of less than 0.5 cm. Furthermore, the pattern of in...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1054/ijom.2002.0469
更新日期：2004-03-01 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：:Routine use of a palatal injection for the removal of maxillary third molars has never been validated. The purpose of this blinded, randomized, controlled trial was to assess the requirement of a separate palatal injection for the extraction of maxillary third molars. Fifty-one patients requiring the removal of bilate...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ijom.2007.06.001
更新日期：2007-12-01 00:00:00
abstract：:DNA ploidy of 50 biopsy specimens of oral leukoplakia was investigated by flow cytometry, and the results were compared with the clinicopathologic appearances. The aneuploidy rate of the leukoplakias was 17/50 (34%), and the mean DNA index (DI) of the aneuploid lesions was 1.22, with a range from 0.70 to 1.84. The inc...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(05)80855-0
更新日期：1995-02-01 00:00:00
abstract：:Internal jugular vein thrombosis is rare. It is often secondary to prolonged central venous cannulation and associated with local or distant malignancy. The authors present a case of intra-operative thrombosis of the internal jugular vein which complicated subsequent microvascular anastomosis of a radial forearm free ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2012.05.033
更新日期：2012-10-01 00:00:00
abstract：:Thirty-two patients with jejunal patches in the oral cavity and oropharynx were examined with contrast-enhanced computed tomography (CT). The morphology of the intestinal wall, the mesenteric fatty tissue, mesenteric lymph nodes and the region of the anastomosis were evaluated and correlated with clinical findings. Th...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(98)80096-9
更新日期：1998-02-01 00:00:00
abstract：:There is an increasing demand for methods to objectively assess a surgeon's competence. The purpose of this study is to test two evaluation methods that assess a surgeon's skills in the removal of mandibular third molar teeth. One method uses an objective checklist scale by which twenty components of the operation are...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1054/ijom.2002.0267
更新日期：2002-08-01 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：: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：:Tumour-induced osteomalacia (TIO) is a rare paraneoplastic form of renal phosphate wasting that results in severe hypophosphatemia, defective vitamin D metabolism, and osteomalacia. In the case reported here, maxillary TIO was not diagnosed for 6years, although initial complaints were reported when the patient was 12y...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2018.02.008
更新日期：2018-10-01 00:00:00
abstract：:A series of 76 patients with head and neck squamous cell carcinoma (HNSCC) was analyzed for the significance of a peritumoral lymphocytic infiltrate (PLI). The composition of PLI was immunohistochemically investigated in frozen material and correlated with other putative prognostically significant variables. PLI was s...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(05)80110-9
更新日期：1994-10-01 00:00:00
abstract：:Salivary gland tumours are uncommon with a broad heterogeneity. The most common benign tumour is the pleomorphic adenoma, whereas mucoepidermoid carcinoma and adenoid cystic carcinoma predominate among the malignancies. Most salivary gland tumours occur in the parotid, and consequently clinical and biological data are...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2004.01.010
更新日期：2004-09-01 00:00:00
abstract：:This technical note reports the use of symphyseal distraction with stepwise osteotomy in a case of lower anterior crowding and rotation in the incisor area. This technique allows for easy dental decompensation and reduced presurgical orthodontic time in skeletal class III cases. ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2006.01.018
更新日期：2006-06-01 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：:Many different surgical and non-surgical techniques are used for the treatment of temporomandibular joint (TMJ) hypermobility. One of these methods is autologous blood injection into the TMJ. The fate of the autologous blood used for treatment of recurring condylar dislocation is still not completely understood. The a...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2012.07.001
更新日期：2013-03-01 00:00:00
abstract：:Leiomyosarcomas are malignant tumours of smooth muscle origin. These tumours are very rare in the head and neck region. We report a case of metastatic uterine leiomyosarcoma masquerading as a primary sarcoma of the masseter muscle. We highlight the importance of considering the possibility of an unrecognised primary a...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2005.08.004
更新日期：2006-05-01 00:00:00
abstract：:This study was performed to test a protocol for trans-implant treatment of chronic recurrent maxillary sinusitis (CRS), via implants with an internal removable sealing screw. The appropriate indications for treatment, optimal number of treatment sessions, and general schedule of treatment and follow-up were assessed. ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2020.01.025
更新日期：2020-07-01 00:00:00
abstract：:The study aimed to assess the proliferative activity and karyotype in Oral Lichen Planus (OLP) lesions. G-banding chromosomal analysis of short-term primary cultures, and immunohistochemical expression of Ki67 and p53 were applied in 30 consecutive OLP patients divided into two groups according to clinical presentatio...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2006.07.018
更新日期：2006-12-01 00:00:00
abstract：:Various surgical techniques have been developed for oro-antral fistula (OAF) closure, all of which have some drawback. Twenty consecutive patients with an OAF were enrolled in this prospective study. A trapezoid full-thickness flap extending from the palatal area to the buccal gingiva was raised, including the fistula...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2020.01.014
更新日期：2020-08-01 00:00:00
abstract：:In a retrospective analysis of 339 patients, treated with a curative intention for a squamous cell carcinoma of the oral cavity between 1988-1996, the value of a half-yearly routine chest radiograph during the first 2 years of follow-up, was evaluated. Metastatic or primary lung malignancies developed in 18 (5.3%) of ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1054/ijom.2002.0289
更新日期：2002-08-01 00:00:00
abstract：:The traditional method of surgical training has followed the 'observe, practice, and teach' model, which is useful for open surgery, but is insufficient for minimally invasive surgery. This study presents the validation of a new simulator designed for TMJ arthroscopy training. A group of 10 senior maxillofacial surgeo...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2016.01.010
更新日期：2016-07-01 00:00:00
abstract：:Implant-prosthetic rehabilitation of atrophic maxillae remains a challenging problem. The aim of this paper is to describe a novel treatment for functional rehabilitation of the atrophic maxilla and to discuss preliminary results of this treatment protocol. A prospective pilot study was carried out in 10 patients who ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2011.05.001
更新日期：2011-09-01 00:00:00
abstract：:A case of hemifacial microsomia in an adult female is presented. The ascending ramus and condyle was primarily reconstructed using an iliac crest free bone graft. Following resorption of the bone graft, a custom-made total TMJ device (TMJ Concepts, USA) was used to correct the deformity. The alternative available reco...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2009.04.012
更新日期：2009-09-01 00:00:00
abstract：:RT-PCR was used to analyze the expression of a series of mRNAs coding for proteoglycans aggrecan, versican, biglycan, decorin, fibromodulin and also hyaluronan synthase 1 in specimens obtained during discectomy of the temporomandibular joint in patients with unilateral signs and symptoms of chronic closed lock (eight ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2005.02.008
更新日期：2005-09-01 00:00:00
abstract：:In this study we investigated the relationships among the risk factors for inferior alveolar nerve injury (IANI), and the difference between preoperative imaging findings on panoramic radiographs and computed tomography (CT), by univariate and multivariate analyses. We determined the following to be significant variab...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2013.01.023
更新日期：2013-07-01 00:00:00
abstract：:Vascular anomalies are amongst the most common congenital abnormalities observed in infants and children. Their occurrence in the head and neck region is a source of functional and aesthetic compromise. This article reviews the surgical management of 115 cases of vascular anomalies involving the head and neck area tre...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2011.02.005
更新日期：2011-06-01 00:00:00
abstract：:A retrospective review of 76 costochondral grafts (57 patients) was undertaken to determine outcome with respect to the extent of previous surgery (none, disc surgery or soft tissue graft, alloplastic disc, alloplastic joint, previous graft) and to initial and preoperative diagnosis. The minimum follow up period was 2...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1054/ijom.2003.0418
更新日期：2003-12-01 00:00:00
abstract：:The purpose of this study was to assess the outcomes of patients with advanced recurrent nasopharyngeal carcinoma (rNPC) and radiation-induced sarcoma of the head and neck (RISHN) who underwent en bloc resection and reconstruction. Fifty-two patients with advanced rNPC (n=36) and RISHN (n=16) underwent en bloc resecti...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/j.ijom.2020.04.022
更新日期：2020-11-30 00:00:00
abstract：:A systematic review and meta-analysis was conducted to answer the clinical question "Does the piezoelectric surgical technique produce fewer postoperative sequelae after lower third molar surgery than conventional rotary instruments?" A systematic and electronic search of several databases with specific key words, a r...
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.2015.10.005
更新日期：2016-03-01 00:00:00
abstract：:Malposition of the globe and failure to fuse images may be the result of orbital trauma. Five patients are reviewed in whom secondary correction of enophthalmos, sunken globe and diplopia was performed by implantation of blocks of dense hydroxylapatite. ...
journal_title：International journal of oral and maxillofacial surgery
pub_type： 杂志文章
doi：10.1016/s0901-5027(05)80419-9
更新日期：1990-10-01 00:00:00
