Articles Related to hydroxyapatite
Calcific deposits are commonly seen on imaging done for other reasons. However, it can also present with periarthritis and adhesive capsulitis leading to severe disabling pain. Many theories have been proposed to explain the etiology and it is considered idiopathic by some. The management is also debatable, Barbotage being the most popular. In the majority of the cases it disappears spontaneously, requiring intervention like Barbotage and surgery only in a few cases. We present a case of a 45 year old female patient who had these calcific deposits in an unusual location of her right shoulder. These disappeared partially on conservative treatment. Subsequently, she developed severe pain in her right shoulder with restriction of all her movements. The pain was severe enough to interfere with her sleep. As a result she underwent barbotage. During the procedure an attempt was made to aspirate the calcific deposit in its entirety. This was not possible due to clogging of needle several times. There was complete resolution of pain following the procedure. However, post- procedure Magnetic resonance imaging (MRI) revealed a significant residual calcification which completely resolved 02 months after therapy with no recurrence.
Novel Multi-Functional Dental Cement for Enamel Remineralization and AntiCariogenic Bacteria Activity
This experimental study evaluated the release of fluoride and several minerals related to remineralization from novel functional cement, apatite ionomer cement (AIC), and its anti-bacterial properties compared with glass ionomer cement (GIC) and surface pre-reacted glass-ionomer filler containing composite resin (giomer). Conventional GIC (Fuji III, GC Co., Tokyo, Japan) was used as the control and fundamental materials. In the AIC powder, 28% wt of GIC powder was replaced with spherical-shaped hydroxyapatite powder. The giomer, BeautiSealant (Shofu Co., Kyoto, Japan), was used as a positive control. Each specimen was immersed in deionized water and analyzed by inductively coupled plasma atomic emission spectrometry (for Al, Si, P, Ca and Sr) and a fluoride-selective electrode. Antibacterial activity against Streptococccus mutans was evaluated using the adenosine-5’-triphosphate luminescence method. Concentrations of released ions from AIC specimens were significantly higher than those from GIC and giomer specimens. Regarding antibacterial activity, luminescence intensity of the AIC group was significantly lower than that of the control and giomer groups. It was concluded that AIC could be a most suitable material for pit and fissure sealant for enamel remineralization and anti-cariogenic and -bacterial activity.
Development of Severe Hypophosphatemia from Acquired Fanconi Syndrome during Treatment with Abiraterone
The first patient was a 77 year old man who had been on abiraterone for 12 months before his phosphorous was checked. At that point, it was 0.6 mg/dl, which is severely decreased. A full work up for hypophosphatemia showed normal parathyroid hormone and 25-hydroxyvitamin D. A urine study showed inappropriate excretion of phosphorous along with aminoaciduria and normoglycemic glucosuria.
Feasibility Analysis of Autogenous Tooth-based Bone Graft Material after Guided Bone Regeneration Technique
We set out to determine the possibility of radiographically evaluating the degree of marginal bone loss in humans after functional loading of implants at sites of guided bone regeneration (GBR) with autogenous tooth-based bone graft (ATBBG) material (AutoBT®, Korea Tooth Bank, Seoul, Korea).
Legal Medical Age Estimation in Portuguese Adult Cadavers: Evaluation of the Accuracy of Forensic Dental Invasive and Non-Invasive Methods
Age estimation of unknown human cadavers is important in setting a crime investigation, such as homicide, suicide or in mass disaster because it can guide forensic investigators to the correct identity among a large number of possible matches. More and more the courts ask for medico-legal age estimations of unknown human cadavers by forensic dentistry.
Anodisation of pure titanium has been carried out in sulphuric and in phosphoric acid solutions at potentials ranging from 50 to 150V. The SEM and AFM morphological analysis indicates that, within this potential range, oxidation in sulphuric acid solution produces better developed mesoporous oxide layers.