نتایج جستجو برای: pseudocyclic cavity

تعداد نتایج: 78889  

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
safa motevasseli department of maxillofacial surgery, guilan university of medical sciences, dental school, rasht, iran zahra dalili oro-maxillofacial developmental diseases research center, department of maxillofacial radiology, guilan university of medical sciences, dental school, rasht, iran pouya nejadshamsi department of endodontics, guilan university of medical sciences, dental school, rasht, iran

introduction: panoramic view as a routine dental radiograph has an important role in diagnosis of other facial abnormalities accompanied with dento- alveolar structures. in this case presentation, we discuss this subject and also the efficacy of cone-beam computed tomography in localization of foreign body in complex anatomy of nasal cavity.

Journal: :emergency journal 0
ali vafaei department of emergency medicine, loghman hakim hospital, shahid beheshti university of medical sciences, tehran, iran hamid reza hatamabadi department of emergency medicine , imam hossein hospital, shahid beheshti university of medical sciences, tehran, iran kamran heidary department of emergency medicine, loghman hakim hospital, shahid beheshti university of medical sciences, tehran, iran hosein alimohammadi department of emergency medicine , imam hossein hospital, shahid beheshti university of medical sciences, tehran, iran mohammad tarbiat department of emergency medicine , imam hossein hospital, shahid beheshti university of medical sciences, tehran, iran

introduction: application of chest radiography for all multiple trauma patients is associated with a significant increase in total costs, exposure to radiation, and overcrowding of the emergency department. ultrasound has been introduced as an alternative diagnostic tool in this regard. the aim of the present study is to compare the diagnostic accuracy of chest ultrasonography and radiography i...

Journal: :journal of dentistry, tehran university of medical sciences 0
masoumeh hasani tabatabaei sara shirmohammadi esmaeil yasini mansoureh mirzaei sakineh arami hamid kermanshah

objectives: the aim of this study was to compare the permeability of dentin after using diamond bur and er:yag laser. materials and methods: seventy-two recently extracted, intact, and restoration-free human permanent molars were used in this study. the samples were randomly divided into three groups of 24 each and class i cavities were prepared as follows. group 1: high speed diamond bur with ...

Journal: :iranian journal of radiology 0
sung yoon park department of otorhinolaryngology-head and neck surgery, college of medicine, chung-ang university, seoul, south korea kyung soo kim department of otorhinolaryngology-head and neck surgery, college of medicine, chung-ang university, seoul, south korea; department of otorhinolaryngology-head and neck surgery, college of medicine, chung-ang university, p. o. box: 156-755, seoul, south korea. tel: +82-262991765, fax: +82-28251765

we reported ct of a case of giant organized hematoma originating from the inferior turbinate without any paranasal sinuses involvement, with an emphasis on different patterns of enhancement of the tumor on enhanced ct scans. this case was exceptional because of unusual location and difficulties in diagnosis. moreover, organized hematoma of nasal cavity should be considered in the differential d...

Journal: :journal of dentistry, tehran university of medical sciences 0
mandana naseri associate professor, department of endodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. mohammad javad kharazifard research fellow, dental research center, tehran university of medical sciences, tehran, iran. sepanta hosseinpour dental and mph student, students' research office, school of dentistry, shahid beheshti university of medical sciences, tehran, iran.

objectives: it is essential for clinicians to have adequate knowledge about root canal configurations; although its morphology varies largely in different ethnicities and even in different individuals with the same ethnic background. the current study aims to review the root canal configurations of mesiobuccal roots of maxillary first molars in an iranian population based on different epidemiol...

Journal: :iranian endodontic journal 0
sahar shakouie hadi mokhtari negin ghasemi seddigheh gholizadeh

thorough understanding of the anatomic and internal morphology of a root canal system is absolutely essential for the success of endodontic treatment. since permanent maxillary first molars have shown variation in internal anatomy, morphology, this tooth has been reviewed extensively. presence of two canals in a two-rooted maxillary first molar has rarely been reported in studies describing too...

Journal: :Plant physiology 1983
K C Woo

This study examines the effect of antimycin A and nitrite on (14)CO(2) fixation in intact chloroplasts isolated from spinach (Spinacia oleracea L.) leaves. Antimycin A (2 micromolar) strongly inhibited CO(2) fixation but did not appear to inhibit or uncouple linear electron transport in intact chloroplasts. The addition of small quantities (40-100 micromolar) of nitrite or oxaloacetate, but not...

Journal: :Plant physiology 1985
S Köster K Winter

Both transmittance changes in a weak beam of green light (light scattering) and the slow decay of chlorophyll a fluorescence were used as indicators of the energy state of leaves of a Crassulacean acid metabolism plant, Kalanchoë pinnata, at frequent intervals during 12-hour light/12-hour dark cycles. To induce light scattering and fluorescence changes, leaves were exposed to red light for 6 mi...

2005
Henk D. L. Hollmann Qing Xiang

The group PGL(2, q) has an embedding into PGL(3, q) such that it acts as the group fixing a nonsingular conic in PG(2, q). This action affords a coherent configuration R(q) on the set L(q) of non-tangent lines of the conic. We show that the relations can be described by using the cross-ratio. Our results imply that the restrictions R+(q) and R−(q) of R(q) to the set L+(q) of secant (hyperbolic)...

Journal: :Plant physiology 1980
B J Shelp D T Canvin

The inhibition of photosynthesis by O(2) in air-grown Chlorella pyrenoidosa was investigated using three experimental techniques (artificial leaf, aqueous method, and O(2) electrode) to measure carbon assimilation. CO(2) response curves were determined under different O(2), pH, and temperature conditions. Regardless of the experimental technique and condition, O(2) inhibition was not evident un...

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