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排序方式: 共有144条查询结果,搜索用时 22 毫秒
41.
Faleh Abushahba Juha Tuukkanen Laura Aalto-Setälä Ilkka Miinalainen Leena Hupa Timo O. Närhi 《European journal of oral sciences》2020,128(2):160-169
The aim of this study was to evaluate the hydrophilicity, surface free energy, and proliferation and viability of human osteoblast-like MC3T3-E1 cells on sandblasted and acid-etched titanium surfaces after air-abrasion with 45S5 bioactive glass, zinc-containing bioactive glass, or inert glass. Sandblasted and acid-etched titanium discs were subjected to air-abrasion with 45S5 bioactive glass, experimental bioactive glass (Zn4), or inert glass. Water contact angles and surface free energy were evaluated. The surfaces were studied with preosteoblastic MC3T3-E1 cells. Air-abrasion with either type of glass significantly enhanced the hydrophilicity and surface free energy of the sandblasted and acid-etched titanium discs. The MC3T3-E1 cell number was higher for substrates air-abraded with Zn4 bioactive glass and similar to that observed on borosilicate coverslips (controls). Confocal laser scanning microscopy images showed that MC3T3-E1 cells did not spread as extensively on the sandblasted and acid-etched and bioactive glass-abraded surfaces as they did on control surfaces. However, for 45S5- and Zn4-treated samples, the cells spread most at the 24 h time point and changed their morphology to more spindle-like when cultured further. Air-abrasion with bioactive glass and inert glass was shown to have a significant effect on the wettability and surface free energy of the surfaces under investigation. Osteoblast cell proliferation on sandblasted and acid-etched titanium discs was enhanced by air-abrasion with 45S5 bioactive glass and experimental Zn4 bioactive glass compared with air-abrasion with inert glass or no air-abrasion. 相似文献
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Background
The Cochrane Neonatal Review Group (CNRG) has achieved a lot with limited resources in producing high quality systematic reviews to assist clinicians in evidence-based decision-making. A formal assessment of published CNRG systematic reviews has not been undertaken; we sought to provide a comprehensive assessment of the quality of systematic reviews (both methodologic and reporting quality) published in CNRG. 相似文献46.
The serous detachment of the retina is a rare but serious complication of the severe preeclampsia. It's diagnosis rests on the systematic exam of the eye fundus at the time of the stern shapes of preeclampsia and especially at every change of the visual acuteness. Therefore the observed anomalies must be confirmed by the practice of a retina angiography in the following week. The observation of such complication at the pregnant woman must induce the childbirth who is the only efficient treatment to preserve her visual prognosis. Usually the serous detachment of the retina disappears spontaneously in some days but some visual aftermaths can occurs in cases where papillary edema is prolonged or in cases of macular pigmentary migrations. As for foetal prognosis, it's often reserved. 相似文献
47.
Moussa A Denguezli W Njim L Haddad A Faleh R Sakouhi M Zakhama A 《Archives of gynecology and obstetrics》2008,278(1):71-74
Skin involvement is a late complication that rarely occurs in ovarian cancer patients. This event invariably carries a bad prognosis in the course of an advanced stage ovarian carcinoma which is usually of the conventional serous type. Micropapillary serous carcinoma (MPSC) was recently recognized as a distinct neoplasm that seems to be less aggressive than conventional serous ovarian carcinoma. Indeed, a few cases of stage IV MPSC have been reported. Herein, we describe an unusual case of ovarian invasive MPSC occurring in a young woman, particularly by its mode of presentation as multiple subcutaneous nodules that were subsequently diagnosed as metastatic lesions. This case demonstrates the potential of MPSC for aggressive clinical behaviour. 相似文献
48.
Hamdan MA Sawair FA Rajab LD Hamdan AM Al-Omari IK 《International journal of paediatric dentistry / the British Paedodontic Society [and] the International Association of Dentistry for Children》2004,14(5):363-370
We present a rare case of a developmental anomaly called regional odontodysplasia or 'ghost teeth' in an 8.5-year-old Jordanian girl. The anomaly affected both the mandibular primary and permanent incisors, and the canines bilaterally. The maxillary teeth were unaffected. This is the first case of the anomaly to be reported in Jordan. The clinical, radiographic and histological features are reviewed. The management of affected patients is discussed. 相似文献
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Al-Akeely MH Alam MK Bismar HA Khalid K Al-Teimi I Al-Dossary NF 《World journal of surgery》2005,29(12):1687-1692
Objective Mirizzi syndrome (MS) is an uncommon presentation of cholelithiasis. This study aims to find the incidence and analyze the
outcome of management of this condition at Riyadh Medical Complex (RMC) with particular reference to diagnostic methods and
outcome of surgical treatment.
Methods Retrospective study on 17 consecutive patients of MS diagnosed and managed at RMC over ten year period. The records were reviewed
for demography, clinical presentation, diagnostic methods, operative procedures, postoperative complication and follow up.
Results The incidence of MS syndrome was 0.7% of 2415 cholecystectomies. There was preponderance of Type I variety (58.8%). Ultrasonography
was able to diagnose 82% cases. ERCP suggested the diagnosis in all cases and helped further in classifying and management
of these patients. All Type I cases were managed with partial cholecystectomy, two underwent laparoscopic surgery. Three Type
II patients were managed by partial cholecystectomy alone. Three patients with Type III variety had choledochoplasty whereas
one remaining patient with Type IV variety underwent hepatico-jejunostomy. All patients had complete recovery with 17.6% procedure-related
morbidity and no hospital mortality. All patients are doing well over a mean follow up 6.5 years.
Conclusion Preoperative diagnosis of Mirizzi syndrome by ultrasound and ERCP is essential to prevent serious complications during surgery.
Partial cholecystectomy is an adequate procedure for Types I & II MS. Choledochoplasty provides an effective surgical repair
in Type III cases. Although laparoscopic cholecystectomy in MS may be hazardous, it may still be tried in preoperatively diagnosed
type I cases, provided the surgeon is experienced and keeps a low threshold for conversion open surgery. 相似文献