introduction: this in vitro study evaluated the influence of composite thickness (with or without fiber reinforcement) on fracture resistance of direct restorations in endodontically treated teeth. methods and materials: fifty-six intact human premolars were chosen and randomly divided into four groups ( n =14). after preparation of a mesio-occluso-distal (mod) cavities and cusp reduction, the ...

Objective- This study aimed to evaluate the feasibility of using platelet rich fibrin membrane as a novel on-lay patching biomaterial in canine esophagotomy and its effects on esophageal wound healing. Design- Experimental study. Animals- Eight adult mixed breed dogs of both sexes equally allocated to control and treatment groups.<b...

We study the effect of user incentives on software security in a network of individual users under costly patching and negative network security externalities. For proprietary software or freeware, we compare four alternative policies to manage network security: (i) Consumer self patching (where no external incentives are provided for patching or purchasing); (ii) Mandatory patching; (iii) Patc...

Patching and transition patching are two techniques proposed to build efficient video-on-demand (VoD) systems. Patching works by allowing a client to playback video data from a patching stream while caching video data from another multicast video stream for later playback. The patching stream can be released once video playback reaches the point where the cached data begins, and playback contin...

BACKGROUND Dental caries is a common disease and affects many adults worldwide. Inlay or onlay restoration is widely used to treat the resulting tooth substance loss. Two esthetic materials can be used to manufacture an inlay/onlay restoration of the tooth: ceramic or composite. Here, we present the protocol of a multicenter randomized controlled trial (RCT) comparing the clinical efficacy of b...

This report details surgical procedures for ridge expansion by means of splitting the crest of an edentulous ridge. Atrophic bony ridges present a unique challenge to the dental implant surgeon. In the past, onlay grafts of bone harvested from the hip, maxillary tuberosity, symphysis of the chin, or external oblique ridge have all been used with success in reconstruction of atrophic ridges. How...

OBJECTIVE To compare both the dorsal onlay technique of Barbagli and the dorsal inlay technique of Asopa for the management of long anterior urethral stricture. METHODS From January 2010 to May 2012, a total of 47 patients with long anterior urethral strictures were randomized into two groups. The first group included 25 patients who were managed by dorsal onlay buccal mucosal graft urethropl...

There are several types of designs used for unicompartmental tibial components. The all-plastic inlay component is recessed and it preserves bone around the outer edge of the tibia. For an onlay component, the entire condyle is resected, and the plastic bearing is usually metal-backed, although all-plastic components are also available. The purpose of this study was to investigate the hypothesi...

Patching is an important method for the treatment of amblyopia, but inappropriate patching will cause the impairment of the visual function. This study is to explore the impact of four hours per day of patching on the visual function of the patient’s sound eye-21 amblyopes (treated with spectacles and patching four hours per day, the patching group) and 6 amblyopes (treated with spectacles only...