PURPOSE The aim of this study was to investigate the accuracy of cone-beam computed tomography (CBCT) in the diagnosis of vertical root fractures in a tooth with gutta-percha and prefabricated posts. MATERIALS AND METHODS This study selected 96 extracted molar and premolar teeth of the mandible. These teeth were divided into six groups as follows: Groups A, B, and C consisted of teeth with ve...

BACKGROUND The ferrule effect in root treated teeth requiring cast posts and cores has been shown to greatly improve fracture resistance. Studies have also shown that in the case of a cast post and core, the longer the ferrule, the greater the fracture resistance. However few studies have considered the effect of different ferrule designs on prefabricated post and composite core systems. AIM ...

In response to housing shortages in densely inhabited urban areas, there is a search for structural engineering solutions serial and modular construction. Prefabricated concrete columns can make an important difference. Using industrial manufacturing processes, it possible produce highly loadable, durable true-to-size that enable accelerated construction progress dismantling or reuse of the com...

The composite of multi-layer steel structure module and frame, as an important design form in Chinese house construction, is widely used the architectural houses. frame building are different from traditional. This kind mechanism adopts prefabricated type, which has advantages fast construction speed few limiting factors, plays a very guiding role modern construction. Based on this, this articl...

BACKGROUND Prefabricated composite free flaps have been described as a technique for reconstruction of laryngotracheal defects. METHODS We present a 74-year-old woman with recurrent papillary thyroid carcinoma (PTC) who was initially treated with thyroidectomy, tracheal resection, and subsequent vocal cord medialization. The patient's recurrent disease was treated with partial laryngectomy an...

Lean Construction and Sustainable are two philosophies implemented in the construction industry but applied separately. Several studies have shown that their joint application can generate greater benefits project sustainability, understanding both share objectives such as decrease waste addition of value to client. This paper present how from these shared objectives, tools contribute qualifica...