Experimental Study of Reinforced Concrete T-Beam Retrofitted with Ultra-High-Performance Concrete under Cyclic and Ultimate Flexural Loading.

Structurally deficient bridges are commonly retrofitted using conventional methodologies, including reinforced concrete, steel jackets, and fiber-reinforced polymers. Although these retrofit methods aim to improve structural performance, exposure to aggressive environments may undermine the durability performance of the retrofit material. More recently, ultra-high-performance concrete (UHPC) has provided an alternative to conventional construction methods, with its superior material characteristics favoring its use in retrofit applications.

Primary leiomyosarcoma of the mandible.

Leiomyosarcoma (LMS) is a malignant soft tissue tumor that exhibits smoothmuscle differentiation. Its occurrence in the oral cavity is exceedingly rare. This article presents a 67-year-old woman with 9-month history of a painful tumoral lesion on the right side of mandible.

Evaluation of PKM2 and MAPK8IP2 Polymorphism in Ameloblastic Carcinoma: A Retrospective Quantitative Study.

Ameloblastic carcinoma (AC) is a rare malignant epithelial odontogenic tumor that histologically retains the features of ameloblastic differentiation and exhibits cytological features of malignancy in the primary or recurrent tumor. It may develop within a preexisting ameloblastoma or arise de novo or from an odontogenic cyst. Epidemiological evidence shows that human cancer is generally caused by genotoxic factors, genes involved in the susceptibility of cancer, including those involved in metabolism or detoxification of genotoxic environment and those controlling DNA replication.

Hypermethylation of p16 tumor-suppressor gene in ameloblastic carcinoma, ameloblastoma, and dental follicles.

Purpose: The high rate of p16 gene alterations in malignant neoplasms suggests the important effect of this tumor-suppressor gene mutation on the malignant behavior of tumoral lesions. The present study investigated the possible methylation of the p16 tumor in ameloblastic carcinoma, ameloblastoma, and dental follicles.

Materials And Methods: Eighteen samples of ameloblastic carcinoma, ameloblastoma, and dental follicles of mandibular impacted third molar were selected from available documents in the archives of the Department of Oral and Maxillofacial Pathology, Taleghani Hospital and the Department of Oral and Maxillofacial Pathology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Massive craniofacial intraosseous vascular malformation resembling cystic angiomatosis: report of 2 cases and review of the literature.

Cystic angiomatosis of bone is a rare condition of multifocal angiomas of the skeleton. The condition is believed to be congenital, grows slowly and starts in first decades of life. Two cases of progressive bimaxillary enlargement, presented here with a history of slowly enlargement of facial bones when they were 9 and 6 year old, respectively.