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Biomedical subjects

L Castagnola

Publications and source records attributed to L Castagnola.

At least 19 recordsLinked to original sources
PubMed1978

[Gamma-2-free amalgams: effect of technic (trituration) on physical properties].

The goal of investigation was to find the physical data, viz. changes of volume, pressure resistance after 1 and 24 hours, creep value of gamma-2-free amalgams (dispersion type), to compare the values to each other and to those of conventional amalgams. On the whole, gamma-2-free amalgams are superior to the conventional products. The pressure resistance after 1 hour is considerably higher, and the creep values are significantly lower. Furthermore, it could be proven that a mixing unit of high RPM was able to improve the quality still more. The best results were found with Amalcap non-gamma 2 and Dispersalloy evenly, both premeasured in capsules and triturated in the Silamat unit. Similar data were found with Dispersalloy tablets, mixed in the Diomat II unit at 3000 RPM. Before clinical long-range examinations can be obtained, judgment of quality cannot be passed.

Dental Amalgam↗
PubMed1977

[Lead content in alginates].

Alginates containing a high level of lead may lead to health damages in dentists and their personnel. Walter and Söremark have pointed out these hazards. The author's investigations with the Perkin-Elmer absorption-photospectrometer shall show how high the lead content of the 25 brands of alginate sold in this country is. Ca 37, Protex and Algihard S contain sizeable amounts of lead. Recommendations are given towards the protection of dentist and assistant.

Alginates↗
PubMed1977

[Mercury vapors in dental practice].

Mercury as a hazard to health for dental office personnel and patients has been discussed for a long time. With the efforts of ecology in this country it was necessary to examine the situation again. 32 dental offices of a Swiss town of 90000 inhabitants were examined regarding their air contamination with mercury. A relationship was determined between dosage, working method, cleaning methods and texture of office floors. The results were not alarming. If specific rules are observed, mercury is no hazard for either dental personnel or patient.

Dental Amalgam↗
PubMed1976

[Materials-testing research on hard and high strength dental plasters].

Types of III and IV dental plasters (ADA specifications No. 25) are used for making working models for clinical and laboratory purposes. 14 plaster products of these two types were examined for their physical properties and compared to the specifications, namely of setting time, volume changes, resistance to pressure and accuracy of detail. Additionally the values of surface hardness, bending strength and resistance to scraping were examined. Accordingly, three products were attributed to special stone (specification No IV): Duricap red (predosed capsule), Glastone, and Vel Mix Stone.

Calcium Sulfate↗
PubMed1976

[Intraligamentary anesthesia with the "Peripress" syringe].

The authors have been using for some time the intraligamentary anaesthesia with the Peripress syringe in their own practices. They consider this syringe as an instrument for efficient and rational working and as an improvement of the local anaesthesia techniques. After specifying the instruments they describe in all detail the injection technique which allows all current work on teeth like extractions, cavity preparation and stumps for crowns, endodontic treatments requiring anaesthesia, all this without loss of waiting time. The intraligamentary anaesthesia does not cause any secondary troubles if carefully applied. It causes very little pain if at all. It allows to start dental work immediately after infiltration and avoids block anaesthesia for current dental work. Patients are favourable to the method. They prefer this type of anaesthesia.

Anesthesia, Dental↗