Suture-associated infections on surgical sites are known to be related to the surface characteristics of the sutures. The present study aimed to fabricate a novel functional suture for surgical procedures and characterize its antioxidative, antimicrobial, and in vitro wound healing properties. St John's wort, , extract (eHp), and biogenic silver nanoparticles (AgNPs) have been combined and used for coating the silk sutures.
View Article and Find Full Text PDFObjectives: Dynamic analysis of chewing impact on the stability of rigid fixation techniques following Le Fort I osteotomy has not been investigated in the previous literature. The aim of the present study was to evaluate segmental displacement and von Mises (VM) stress values on the fixation devices following different amounts of Le Fort I advancements under dynamic loading conditions.
Materials And Methods: The 3D finite element models simulating 3, 5 and 8 mm advancement of maxilla at the Le Fort I level were generated using CBCT scan data.
Background: The effect of different thread designs and diameters on the all-on-four concept is unclear.
Objective: The aim of the study was to clarify the differences in stress distribution of dental implants with various thread designs and diameters based on the all-on-four concept with three dimensional (3D) finite element analysis (FEA).
Methods: A 3D model of a totally edentulous mandible was used to perform the FEA.
Trigeminal neuralgia pain remains a challenge to treat. Natural compounds may be promising options for relieving pain. This study was aimed at investigating the effects of aconitine in a rat model of trigeminal neuralgia pain.
View Article and Find Full Text PDFThe relationship between mandibular third molar (M3) angulation and mandibular angle fragility is not well established. The aim of this study was to evaluate the impact of M3 angulation on the mandibular angle fragility when submitted to a trauma to the mandibular body region. A three-dimensional (3D) mandibular model without M3 (Model 0) was obtained by means of finite-element analysis (FEA).
View Article and Find Full Text PDFThe bony augmentation of severely atrophied mandible is generally required for the purposes of prosthetic rehabilitations. The treatment strategies have been well defined in the literature ranging from osteotomy techniques to distraction osteogenesis. Visor osteotomy is the milestone of the reconstructive surgery for the atrophied mandible which has received some modifications.
View Article and Find Full Text PDFIn this study, the biomechanical behavior of different fixation methods used to fix the mandibular anterior segment following various amounts of superior repositioning was evaluated by using Finite Element Analysis (FEA). The three-dimensional finite element models representing 3 and 5 mm superior repositioning were generated. The gap in between segments was assumed to be filled by block bone allograft and resignated to be in perfect contact with the mandible and segmented bone.
View Article and Find Full Text PDFThe aim of the current study was to comparatively evaluate the mechanical behavior of 3 different fixation methods following various amounts of superior repositioning of mandibular anterior segment. In this study, 3 different rigid fixation configurations comprising double right L, double left L, or double I miniplates with monocortical screws were compared under vertical, horizontal, and oblique load conditions by means of finite element analysis. A three-dimensional finite element model of a fully dentate mandible was generated.
View Article and Find Full Text PDFVolumetric changes of the alveolar ridge after socket preservation with various techniques have been investigated frequently. However, changes in bone density and quality of bone within the extraction sockets have seldom been studied. The purpose of this study was to evaluate the bone quality of grafted versus non-grafted socket sites prior to dental implant placement using Hounsfield unit (HU) values derived from cone-beam computed tomography (CBCT) imaging.
View Article and Find Full Text PDFThe J-bone graft technique has been used for the reconstruction of glenoid surfaces with significant bone loss in orthopedic surgery in which the J-shaped bicortical bone graft is harvested from the iliac crest. Because of the osteotomy design, the press-fit fixation into the defect is obtained. In this technical note, the authors adopted this technique to oral and maxillofacial surgery and described the technique for the reconstruction of the jaws.
View Article and Find Full Text PDFAutogenous bone harvest from the anterior ilium is a common procedure in the surgical field. In the current study, a retrospective analysis was performed regarding the bone graft harvesting techniques from the anterior ilium. The retrospective analysis with a 1-year period included 16 patients who had undergone iliac bone grafting for oral and maxillofacial reconstruction.
View Article and Find Full Text PDFOral Surg Oral Med Oral Pathol Oral Radiol
November 2012
Central sleep apnea (CSA) results from a reduction in lack of output from the central respiratory generator in the brainstem, manifesting as apneas and hypopneas without discernible efforts. CSA can lead to hypercarbia, arrhythmias, pulmonary hypertension, and heart failure. Indeed, the patient may develop a disturbed breathing during sedation procedures.
View Article and Find Full Text PDFOral Surg Oral Med Oral Pathol Oral Radiol
March 2012
Fibrodysplasia ossificans progressiva (FOP) is a rare hereditary connective tissue disease characterized by the progressive ectopic ossification of ligaments, tendons, and facial and skeletal muscles throughout life. Symptoms begin in childhood as localized soft tissue swellings. Immobility and articular dysfunction appear with involvement of the spine and proximal extremities.
View Article and Find Full Text PDFJ Plast Reconstr Aesthet Surg
June 2008