Narrow, well-defined radiolucent lines commonly observed at the bone-implant interface of unicompartmental knee replacement tibial components have been referred to as physiological radiolucencies. These should be distinguished from pathological radiolucencies, which are poorly defined, wide and progressive, and associated with loosening and infection. We studied the incidence and clinical signi...

Mrs. G., 47 years old in good health, consults for moderate canine-to-canine crowding, that she wishes to treat. She was prescribed a periapical series of x-rays, and the images taken of the incisors showed lacunae that attracted attention. Additional examinations were requested of her, and pulpal vitality tests were done: 11, 21, and 22 responded positively. 12 had a previous root canal and a ...

BACKGROUND In recent years, the choice of ceramic-on-ceramic (COC) and metal-on-polyethylene (MOP) in primary total hip arthroplasty (THA) remains controversial. The purpose of this study was to compare the reliability and durability of COC with that of MOP bearing surfaces in THA. METHODS Based on prospective randomized controlled trials (RCTs) searched from Pubmed, Embase, Web of Science, a...

OBJECTIVES Radiolucent mandibular lesions seen on panoramic radiographs develop from both odontogenic and non-odontogenic structures. They represent a broad spectrum of lesions with a varying degree of malignant potential. The purpose of this review is to illustrate the characteristic imaging findings-as well as the clinical and histological features-of common and uncommon radiolucent lesions o...

Diagnosing ingested dental prostheses can be difficult and delays in treatment may result in serious complications. Patients often present with a vague history and very few reliable clinical signs. In addition, the fact that dental plates are often radiolucent may lead to the diagnosis being overlooked with disastrous consequences. A case of successful diagnosis and treatment is presented, and ...

introduction calcifying odontogenic cyst (coc) is a unique and uncommon odontogenic cyst classified into four groups of cystic, odontoma producing, ameloblastomatous proliferating and neoplastic ones. case presentation a 34-year-old iranian man complaining of a painless facial and palatal swelling of the left side of the maxilla persisted for approximately three years was referred to the depart...

We examined the radiographs from a prospective clinical study of fixation by pedicle screws and those from an experimental study in a sheep model. In the clinical study, instruments were removed from 21 patients after implantation for 11 to 16 months and the extraction torques of the screws were recorded. A structured protocol was used for the radiological examinations. In the experimental stud...