34 research outputs found
The effect of fluoride on enamel and dentin formation in the uremic rat incisor
Renal impairment in children is associated with
tooth defects that include enamel pitting and hypoplasia.
However, the specific effects of uremia on tooth formation
are not known. In this study, we used rat mandibular incisors,
which continuously erupt and contain all stages of tooth
formation, to characterize the effects of uremia on tooth
formation. We also tested the hypothesis that uremia
aggravates the fluoride (F)-induced changes in developing
teeth. Rats were subjected to a two-stage 5/6 nephrectomy or
sham operation and then exposed to 0 (control) or 50 ppm
NaF in drinking water for 14 days. The effects of these
treatments on food intake, body growth rate, and biochemical
serum parameters for renal function and calcium
metabolism were monitored. Nephrectomy reduced food
intake and weight gain. Intake of F by nephrectomized rats
increased plasma F levels twofold and further decreased food
intake and body weight gain. Uremia affected formation of
dentin and enamel and was more extensive than the effect of
F alone. Uremia also significantly increased predentin width
and induced deposition of large amounts of osteodentin-like
matrix-containing cells in the pulp chamber. In enamel
formation, the cells most sensitive to uremia were the
transitional-stage ameloblasts. These data demonstrate that
intake of F by rats with reduced renal function impairs F
clearance from the plasma and aggravates the already
negative effects of uremia on incisor tooth development
La radiografia digitale in Reumatologia.
Il testo è dedicato alla descrizione dei quadri radiologici osservabili in corso delle diverse malattie reumatiche. Vengono esaminate tutte le malattie e riportati i quadri morfologici caratteristici. Una particolare attenzione è dedicata agli aspetti diagnostico differenziali. Le implicazioni, i vantaggi e la versatilità della nuova tecnologia digitale vengono illustrate nel dettaglio
CASE-REPORT 375 - DIAGNOSIS - MULTICENTRIC RETICULOHISTIOCYTOSIS
A case of MR in a 18-years old girl is presented with dramatic demonstration of the progressive lesions of the hands demonstrated by xerography
Il quadro radiologico delle alterazioni muscolo-scheletriche nell’insufficienza renale cronica. Imaging of musculo-skeletal manifestations associated with chronic renal insufficiency.
Le alterazioni muscolo-scheletriche in corso di insufficienza renale cronica sono molteplici. Le alterazioni radiologiche più frequenti (osteodistrofia renale) sono correlate all'iperparatiroidismo secondario, all'osteoporosi, all'osteomalacia. si possono riscontrare lesioni correlate al trapianto ed al trattamento dialitico
L'osteoartrosi erosiva: radiologia convenzionale versus radiologia digitale.
Il lavoro analizza il quadro radiologico dell'artrosi erosiva e valuta vantaggi e limiti della radiologia digitale rispetto alla radiografia convenzional
Reabsorption of the mandible in systemic sclerosis
Case report e rassegna sintetica sul riassorbimento osseo in corso di sclerosi sistemic