Dental xrays

BACKGROUND: The age estimation of the individual by the forensic experts ascertains the chronological age of an individual. The possibility that the person being examined may be younger or older than a certain age threshold makes this process crucial, as it will establish whether or not the person is an adult under the law. The aim of this study was to test the applicability of the London Atlas of tooth development and eruption in Nepalese subset population. METHODS: The London Atlas for age estimation was tested in 350 digital panoramic radiographs from the patients between four and twenty-four years visiting Tribhuvan University Teaching Hospital, Institute of Medicine, Nepal...

Florid cemento-osseous dysplasia (FCOD) is a rare benign fibro-osseous lesion which affects multiple quadrants and predominantly the mandible. This case report presents a successful implant placement with 8-year of follow-up in a 44-yearold woman asking for a fixed restoration in mandibular right posterior edentulous area. Radiographic images showed lobular, irregularly shaped radiopacities and radiolucencies almost symmetrically observed in the premolar-molar area of the right and left regions of the mandible...

INTRODUCTION: The most common cause of gas under diaphragm is hollow viscous perforation. In 10% of cases it can be due to rare causes, both abdominal and extra-abdominal, one of them being intra abdominal infection by gas forming organisms. PRESENTATION OF THE CASE: A 51 year old male patient, a poorly controlled diabetic, presented with a second episode of severe pain abdomen and abdominal distention, with lower abdominal tenderness. Plain Xray of the abdomen in erect posture showed gas under the right dome of diaphragm and ultrasound abdomen confirmed gross pneumoperitoneum...

OBJECTIVES: This study aimed to compare a number of new nano-composites capable of protecting the jaw from ionizing radiation. MATERIALS AND METHODS: Four different types of nano-powders [Ti, Zr (IV) oxide, Ag and Co] were mixed in a polymer matrix to create nano-composites with doping values of 8% in weight. Small-angle X-ray scattering (SAXS) analysis was performed using a HECUSSAXS system with 50 kV- 50 mA. Co nano-composites (Co-pnm) yielded the most promising values of the four nanocomposites tested in terms of X-ray absorption...

BACKGROUND/AIM: Flapless implant surgery has become very important issue during recent years, mostly thanks to computerization of dentistry and software planning of dental implants placements. The aim of this study was to compare flap and flapless surgical techniques for implant placement through radiographic and radiofrequency analyses. METHODS: The experiment was made in five domestic pigs. Nine weeks following domestic pigs teeth extraction, implants were placed, on the right side using surgical technique flap, and flapless on the left side...

The purpose of this work was to compare measurements of the posterior crowding in the mandibular arcade between two types of radiographic examinations: the dental panoramic one and the dental scanner. Our sample is composed of 12 patients before treatment orthodontic, with an average age of 16 + 4 years. These patients presented an posterior crowding on dental panoramic radiography accepted the catch of a dental scanner to re-examine this crowding. To make this study, we measured on dental panoramic radiographies and the dental scanners of each patient posterior available space and posterior necessary space according to the technique of Merrifield and we calculated the posterior crowding for each case...

A pilot study to compare radiation exposure with the Tru-Align rectangular collimation system to round collimation exposures was undertaken. Radiation exposure at various points within the cross sections of the collimators and entrance, intraoral and exit dose measurements were measured using InLight OSL dosimeters. Overall dose reduction with the use of the rectangular collimation system was estimated by taking into account the ratios of collimator openings and the average radiation exposure at the measurement points...

PURPOSE: To evaluate the effects of carboxylic and phosphate functional monomers on the bond strength and durability of an acrylic resin joined to a magnetizable stainless steel and its component metals. MATERIALS AND METHODS: Disk specimens (10 and 8 mm in diameter and 2.5 mm thick) were prepared from SUS XM27 stainless steel, high-purity iron, and chromium metals. The specimens were ground with abrasive paper, and divided into an unprimed control group and 4 groups primed with: 1...

PURPOSE: To evaluate the dental and periodontal health of adolescents and young women with restrictive anorexia nervosa (AN), and relationship between bone mineral density (BMD) assessed by dual energy Xray absorptiometry (DXA) and dental radiographs. STUDY DESIGN: Twenty-three young women, median age 17.6 years (range 14.4-27.2), were studied within three months of entering a clinical trial. DXA BMD measurements were obtained and subjects underwent a comprehensive dental examination, including panoramic and bitewing dental radiographs...

The use of diagnostic reference levels (DRLs) is part of the optimisation process of radiation protection, in that it identifies practices that are in need of corrective action, resulting in dose reduction. Their use is provided for in Irish and European legislation. In this project, measurements were carried out at 42 of the 46 licensed intra-oral xray machines in Co. Wicklow using an Unfors Mult-0-Meter. The third quartile patient entrance dose for a maxillary molar was calculated at 2.31 mGy, and all the measurements were below the European DRL of 4 mGy...

The priority in the treatment of facial clefts is to avoid the iatrogenic sequellae by restoring a normal anatomy of the face. The difficulty of this treatment is that the majority of the sequellae are only observed 15 years after the primary treatment. After having treated our children during more than 20 years by a primary closure of the lip at 6 months and closure of the palate by push back according to Veau Wardill at 18 months, we adopted the technique of René Malek since 1981 with early closure of the palate at 3 months then, without undermining of the palatal mucosa, closure of the bony palate with a vomer flap at the age of 6 months...

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