Search results for " graf"
showing 10 items of 456 documents
Marginal bone loss around implants placed in maxillary native bone or grafted sinuses: a retrospective cohort study
2013
Objectives To assess differences in marginal bone loss around implants placed in maxillary pristine bone and implants placed following maxillary sinus augmentation over a period of 3 years after functional loading. Material and methods Two cohorts of subjects (Group 1: Subjects who received sinus augmentation with simultaneous implant placement; Group 2: Subjects who underwent conventional implant placement in posterior maxillary pristine bone) were included in this retrospective study. Radiographic marginal bone loss was measured around one implant per patient on digitized panoramic radiographs that were obtained at the time of prosthesis delivery (baseline) and 12, 24, and 36 months later…
Envelope approach for onlay bone grafting : preliminary surgical and prosthetic results
2009
Minimally invasive surgery principles have been applied to preprosthetic-implant surgery, and an adequate presurgical planning reduces morbidity in both harvesting and stabilization of the bone grafts. Objective: A new ?envelope? approach for onlay bone grafting at the alveolar process is presented, this avoids releasing incisions yet allowing adequate reconstruction of the defective site. Study design: To be included in the study the patient had to have an antero-posterior defect of the alveolar crest. Patient age and sex, location of the defect, type and size of graft, and complications appeared during follow up were recorded. Results: Ten consecutive patients (4 men and 6 women) have bee…
Oral complications after lingual mucosal graft harvest for urethroplasty
2007
Background: The aim of this study was to assess the complications at donor site after lingual mucosal graft harvesting for urethroplasty. Methods: From March 2006 to December 2006, 30 patients of anterior urethral stricture underwent lingual mucosal graft urethroplasty. The site of the harvest graft was lateral mucosal lining of the tongue. Donor site complications, that is, pain, slurring of speech, pain during speech, salivatory changes and difficulty in protrusion of tongue were noted. Results: The mean (range) age of patients was 36.2 years (22–52 years). The mean (range) stricture length was 8.4 cm (4.8–16 cm) and graft length was 8.5 cm (4.2–16.2 cm). Mean duration of follow up was…
Allogeneic Hematopoietic Stem Cell Transplantation Following the Use of Hypomethylating Agents among Patients with Relapsed or Refractory AML: Findin…
2018
Patients with primary refractory or relapsed acute myeloid leukemia (RR-AML) have very poor prognosis. Due to limited treatment options, some patients are treated with hypomethylating agents (HMAs) due to their tolerability. Little is known about the role of allogeneic hematopoietic stem cell transplantation (HSCT) following HMA therapy in this setting. We retrospectively analyzed an international cohort of 655 RR-AML patients who received HMA therapy to study patterns and outcomes with HSCT. Only 37 patients (5.6%) patients underwent HSCT after HMA therapy. The conditioning regimen was myeloablative in 57% and nonmyeloablative in 43%. Patients received matched unrelated donor, matched sibl…
Correlation between Density and Resorption of Fresh-Frozen and Autogenous Bone Grafts
2014
Trial Design. This analysis compared the outcome of fresh-frozen versus autologous bone block grafts for horizontal ridge augmentation in patients with Cawood and Howell class IV atrophies.Methods. Seventeen patients received autologous grafts and 21 patients received fresh-frozen bone grafts. Patients underwent CT scans 1 week and 6 months after surgery for graft volume and density analysis.Results. Two autologous and 3 fresh-frozen grafts failed. Autologous and fresh-frozen grafts lost, respectively, 28% and 46% of their initial volume(P=0.028). It is noteworthy that less dense fresh-frozen blocks lost more volume than denser grafts (61% versus 16%).Conclusions. According to these 6-month…
Implant treatment in atrophic posterior mandibles: Vertical regeneration with block bone grafts versus implants with 5.5-mm intrabony length
2014
Purpose: To retrospectively compare the outcomes of implants placed in posterior mandibles vertically regenerated with onlay autogenous block bone grafts and short dental implants. Materials and Methods: Consecutive patients with vertical bone atrophy in edentulous mandibular posterior regions (7 to 8 mm of bone above the inferior alveolar nerve) were treated with either implants placed in regenerated bone using autologous block bone grafts (group 1) or short implants (with 5.5-mm intrabony length) in native bone (group 2) between 2005 and 2010 and followed for 12 months after loading. The procedure used was the established treatment protocol for this type of patient at the Oral Surgery Uni…
Short-and long-term outcome after PTCA in patients with stable and unstable angina
1990
Acute results and follow-up data over a period of 36 months after attempted PTCA in 406 patients with stable angina and 202 patients with unstable angina are reported. The rate of acute complications (death, myocardial infarction and bypass grafting (CABG) amounted to 1.5% in stable and 6.4% in unstable patients (P less than 0.005). Within the first week after PTCA a significantly lower percentage (1.7% vs 10.4%) of cardiac events (death, myocardial infarction, CABG and repeat PTCA) was observed in the stable group (P less than 0.001). During a 12-month follow-up period, another 16.3% of the patients in the stable group and 30.7% of unstable patients suffered a new cardiac event (P less tha…
Outcome after palliative posterior surgery for metastatic disease of the spine - evaluation of 106 consecutive patients after decompression and stabi…
1999
From 1987 to 1996, 106 consecutive patients with metastatic disease of the spine who underwent palliative decompression from a dorsal approach and subsequent stabilisation with Cotrel-Dubousset instrumentation (CDI) were followed prospectively, and independent of the surgeons. Parameters evaluated were neurological function, perioperative complications, survival and rehabilitation. Following the Frankel system for the assessment of neurological disorder, 33 patients had a major deficit (grade A, B or C), 23 a minor deficit (grade D) and 50 no deficit. If there was no neurological dysfunction, the only patients who underwent operation were those graded as class IV according to Harrington. Ou…
Gabor frames for classification of paroxysmal and persistent atrial fibrillation episodes
2016
[EN] In this study, we propose a new classification method for early differentiation of paroxysmal and persistent atrial fibrillation episodes, i.e. those which spontaneously or with external intervention will return to sinus rhythm within 7 days of onset from the ones where the arrhythmia is sustained for more than 7 days. Today, clinicians provide patients classification once the course of the arrhythmia has been disclosed. This classification problem is dealt with in this study. We study a sparse representation of surface electrocardiogram signals by means of Gabor frames and afterwards we apply a linear discriminant analysis. Thus, we provide an early discrimination, obtaining promising…
Use of buccal fat pad to repair post-extraction peri-implant bone defects in the posterior maxilla: a preliminary prospective study
2015
Background: Extensive literature exists about the use of the BFP in the treatment of oral defects but, to our knowledge, no article refers to the use of the BFP as a substitute of the membrane barriers for treatment of peri- implant bone defects. The aim was to evaluate the use of the buccal fat pad as a coating material for bone grafting in the peri-implant bone defect regeneration of immediate implants placed in the posterior maxilla. Material and Methods: A preliminary prospective study of patients involving immediate implants in which the buccal fat pad was used as a coating material to peri-implant bone defects was carried out. The outcome measures assessed were: postoperative pain and…