نتایج جستجو برای: screw removal
تعداد نتایج: 157088 فیلتر نتایج به سال:
Distal tibia fractures are 7-10% of alltibial fractures and they are caused both by high and low energy traumas with different fracture pattern. We present a case report of a 23 year old female affected by mental delay, who fall down in March 2014 reporting the fracture of the distal tibia. She has been operated in emergency with two elastic nails and a lag screw. Two months after she has been ...
PURPOSE The purpose of this study is to evaluate the stability of interface between Co-Cr-Mo (CCM) UCLA abutment and external hex implant. MATERIALS AND METHODS Sixteen external hex implant fixtures were assigned to two groups (CCM and Gold group) and were embedded in molds using clear acrylic resin. Screw-retained prostheses were constructed using CCM UCLA abutment and Gold UCLA abutment. Th...
Mini-implants and miniscrews are commonly used in orthodontics to provide additional temporary intraoral anchorage. Partial osseointegration represents a distinct advantage in orthodontic applications, allowing effective anchorage to be combined with easy insertion and removal. This article reports the histomorphometric findings of the osseointegration of bracket screw bone anchors (BSBAs). In ...
The present study examined the in vitro and vivo bone formation adhesion ability on surface of a titanium dental implant made by plasma electrolytic oxidation (PEO) electrolytes containing bioactive ions. To achieve this goal, screw-shaped fabricated Ti-6Al-4V alloy implants were processed via PEO using an electrolyte solution calcium (Ca), phosphorous (P), magnesium (Mg), zinc (Zn), strontium ...
background: reusing orthodontic mini-screws would reduce treatment cost and lead to more use of mini-screws and improvement of orthodontic treatments. this study has assessed the effects of reprocessing and reusing the titanium mini-screws on their maximum insertion, removal and fracture torque (ft). materials and methods: in this experimental study, 20 titanium mini-screws (1.6-mm × 8-mm) were...
ABSTRACT Objectives To date, the clinical stability of dual-thread orthodontic miniscrews has not been studied. This study aimed to compare primary and long-term success rate cylindrical examine association between various factors miniscrews. Materials Methods A total 145 135 were inserted in maxillary mandibular buccal alveolar areas 142 patients. The torque Periotest (Siemens, Bensheim, Germa...
The authors report a case of upper eyelid abscess in a 30 year old male that presented in the ophthalmology department with complains of recurrent eyelid pyosis, hyperaemia and swelling that started 2 months earlier and that did not ease to repeated courses of antibiotic therapy. The reported history of the patient revealed frontal sinus trauma that occurred 5 years before and that required sur...
Radial head implant arthroplasty is a consideration for the treatment of comminuted, unreconstructable fractures of the radial head. Many prosthetic designs exist and can be unipolar or bipolar, each of which can be cemented or noncemented. For most unipolar designs, a prosthetic stem is first implanted into the proximal radius. The prosthetic radial head is then impacted onto a morse taper on ...
INTRODUCTION Cement augmentation of pedicle screws has been shown to improve screw fixation in osteopenic spines. The use of polymethylmethacrylate cement augmentation has been documented in various studies using a number of different techniques: cement injection directly into an open pilot hole, through cannulated screws, using implanted sleeves, and using kyphoplasty techniques. Complications...
This in vitro study evaluated the effect of mechanical cycling on the torque of retaining screw in external hexagon implants with platform switching (PS), regular platform (RP) and wide platform (WP). A total of 30 specimens were equally divided into 3 groups: PS, PR and WP. Each specimen was prepared with implants: 3.75 x 10 mm for RP group and 5.0x10 mm for PS and WP groups and its respective...
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