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51.
Sujata Saha Armando A. Davila Jon P. Ver Halen Umang K. Jain Nora Hansen Kevin Bethke Seema A. Khan Jacqueline Jeruss Neil Fine John Y.S. Kim 《Breast (Edinburgh, Scotland)》2013,22(6):1072-1080
IntroductionAlthough breast reconstruction following mastectomy plays a role in the psychological impact of breast cancer, only one in three women undergo reconstruction. Few multi-institutional studies have compared complication profiles of reconstructive patients to non-reconstructive.MethodsUsing the National Surgical Quality Improvement database, all patients undergoing mastectomy from 2006 to 2010, with or without reconstruction, were identified and risk-stratified using propensity scored quintiles. The incidence of complications and comorbidities were compared.ResultsOf 37,723 mastectomies identified, 30% received immediate breast reconstruction. After quintile matching for comorbidities, complications rates between reconstructive and non-reconstructives were similar. This trend was echoed across all quintiles, except in the sub-group with highest comorbidities. Here, the reconstructive patients had significantly more complications than the non-reconstructive (22.8% versus 7.0%, p < 0.001).ConclusionImmediate breast reconstruction is a well-tolerated surgical procedure. However, in patients with high comorbidities, surgeons must carefully counterbalance surgical risks with psychosocial benefits to maximize patient outcomes.Level of evidenceLevel 3 相似文献
52.
目的介绍利用不同筋膜血管蒂桡骨茎突骨瓣植入治疗陈旧性腕舟状骨骨折的疗效。方法2002年9月-2010年5月,采用以桡动脉返支为蒂的骨瓣,或以骨间背动脉桡侧终末支的筋膜蒂骨瓣植入结合内固定治疗腕舟状骨陈旧性骨折41例。结果38例经6~27个月(平均19.3个月)的随访,X线片显示腕舟骨骨折均在术后4~6个月获得骨性愈合,愈合率达100%。腕关节活动度为4例腕掌屈60°背伸50°34例腕掌屈达70°-80°.背伸45°-55°。腕关节活动时无疼痛。腕关节功能按Krimmer评分表测定:总体疗效为优29例,良9例。结论采用带不同血管蒂桡骨茎突骨瓣植入治疗舟状骨陈旧性骨折疗效确切。 相似文献
53.
We investigated the effect of guided bony regeneration using collagen membranes for sinus augmentation in the first maxillary molars of 18 adult female beagle dogs. The teeth were extracted bilaterally and the sinus floors were lifted with simultaneous implantation. The grafted material composed of a combination of autografts and Bio-oss in a 2:1 ratio. On the experimental side in each dog, collagen membrane was folded at the lateral osteotomy window, at the apex of the implants, and at a certain part of the palatal bone. On the opposite (control) side, the collagen membrane covered the osteotomy window. Six animals were killed at each of 4, 12, and 24 weeks postoperatively. Gross observation, biomechanical testing, and histological examinations were made. On the experimental side, grafted materials showed no obvious resorption or subsidence, and a new bone had formed at the apex of the implants. On the control side, the grafted materials had been shifted and absorbed. Histological examination showed increased formation of a new bone in the experimental group, which matured over time. At 4 weeks, inflammatory cells were present in the control group, which showed less maturation of the new bone. The pull-out force increased with time and, at week 24, there was a significant difference in pull-out force between the two groups (p<0.01). Guided bony regeneration with the enfolded coverage of membrane can effectively reduce resorption of grafted bone on the apical surface of implants and stimulate formation of the new bone in sinus augmentation. 相似文献
54.
PJ Moynihan A Elfeky JS Ellis CJ Seal RM Hyland JM Thomason 《Journal of dentistry》2012,40(10):843-850
Edentulous persons have poor diet quality demonstrating a need for dietary intervention. Implant-supported mandibular overdentures (IODs) have functional advantages over conventional dentures (CD), but whether they enhance the ability to eat more healthily following dietary advice is unknown. 相似文献
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57.
《Medical engineering & physics》2014,36(6):715-720
PurposeWe compared implant stability as determined by the peak frequency from the impact response with the implant stability quotient (ISQ) by resonance frequency analysis (RFA) in various artificial bone conditions. The clinical bone conditions were simulated using an artificial bone material with different cortical thicknesses and trabecular densities.Materials and methodsThe artificial bone material was solid, rigid polyurethane. The polyurethane foam of 0.8 g/cm3 density was used for the cortical bone layer, and that of 0.08, 0.16, 0.24, 0.32, and 0.48 g/cm3 densities for the trabecular bone layer. The cortical bone material of 4 different thicknesses (1.4, 1.6, 1.8, and 2.0 mm) was attached to the trabecular bone with varying density. Two types of dental implants (10 and 13 mm lengths of 4.0 mm diameter) were placed into the artificial bone blocks. An inductive sensor was used to measure the vibration caused by tapping the adapter–implant assembly. The peak frequency of the power spectrum of the impact response was used as the criterion for implant stability. The ISQ value was also measured for the same conditions.ResultsThe stability, as measured by peak frequency (SPF) and ISQ value, increased as the trabecular density and the cortical density increased in linear regression analysis. The SPF and ISQ values were highly correlated with each other when the trabecular bone density and cortical bone thickness changed (Pearson correlation = 0.90, p < 0.01). The linear regression of the SPF with the cortical bone thickness showed higher goodness of fit (R2 measure) than the ISQ value with the cortical bone thickness. The SPF could differentiate implantation conditions as many as the ISQ value when the trabecular bone density and the cortical density changed. However, the ISQ value was not consistent with the general stability tendency in some conditions.ConclusionThe SPF showed better consistency and differentiability with implant stability than the ISQ value by resonance frequency analysis in the various implantation conditions. 相似文献
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Objectives
Oral bacteria have evolved to form biofilms on hard tooth surfaces and dental materials. The antibiofilm effect of materials used for the restoration of oral function affects oral health. In this review we describe the features involved in the formation of oral biofilms on different surfaces in the oral cavity and the antibiofilm properties of dental materials.Methods
An electronic search of scientific papers from 1987 to 2013 was performed with PubMed, ScienceDirect and Google search engines using the following search terms: antibiofilm, dental material, dental hard tissue, endodontic material, implant material, oral biofilm, and restorative material.Results
Selected inclusion criteria resulted in 179 citations from the scientific, peer-reviewed literature. Oral biofilms form not only on dental hard tissue, but also on a wide range of dental materials used in cariology, endodontics, restorative dentistry and periodontology, resulting in destruction of dental hard tissue and even infection. Therefore, there has been a continuous effort to develop the antibiofilm properties of dental materials used for different purposes. Specific antimicrobial design in the composition and application of new materials (e.g. bioceramic sealer, resin composite, implant coating) demonstrates an improvement of the antibiofilm properties of these materials compared to earlier generations.Significance
A significant number of dental materials have been shown to affect biofilm growth by inhibiting the adhesion of bacteria, limiting their growth or killing microbes in the biofilms formed in vitro. Incorporation of an appropriate amount of antibacterial agent could provide dental materials with antibiofilm activity without significantly influencing their mechanical properties. However, more randomized and double-blind clinical studies of sufficient length with these materials are needed to confirm long term success following their use in the dental clinic. 相似文献60.
Paolo Gennaro Glauco Chisci Guido Gabriele Giorgio Iannetti 《The British journal of oral & maxillofacial surgery》2014
Loss of sensation in the lip after insertion of an implant is annoying. The aim of this paper was to describe two techniques for management of osseointegrated dental implants that impinge on the mandibular nerve, the purpose of which is to improve sensation without unscrewing the dental implant. 相似文献