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At least 217 records · Page 12Linked to original sources
PubMed1989

[Development of electroforming apparatus for coronal restoration].

As dental technologies become highly developed, techniques have been more diversified. From as aspect of prosthodontic practice, both esthetic and functional requirements are emphasized for coronal restoration and consequently, these should be considered in the routine procedure. In fabrication of coronal restorations, metal, porcelain and resin are commonly used, and there exists the various disadvantages for metal cast method due to complicated processes by using different dental materials. Therefore, an electroforming apparatus was developed by us to replace the conventional procedure by a cathode rotary system. It was applied for coronal restorations to allow an electroforming directly on a working model. An experiment was successfully conducted to apply for a veneer crown on abutment tooth of upper central incisor on plaster model. The results were obtained as follows, 1. It was become possible to construct a metal framework by the electroforming. 2. Metal framework can be constructed on the same working model without a duplication of it. 3. The combined system for cathode rotation and liquid circulation could shorten the electroposition time, and allows a high current density extending to 50 A/dm2.

Dental Restoration, Permanent↗
PubMed1990

[Modified Klammt apparatus for treatment of stomatognathic abnormalities in preschool children].

Klammt apparatus was modified adapting it for treatment of occlusal abnormalities in milk teeth. The resting and functional positions of the tongue were used for this aim through appropriate directing of its action in the apparatus for widening of anterior parts of dental arches. The usefulness of the modified apparatus in the treatment of stomatognathic system abnormalities was assessed in 90 preschool children with malocclusions of crossbite type, open bite, anterocclusion and posterocclusion. The control group comprised 90 preschool children with similar abnormalities treated with monoblock. The results were significantly better after treatment with the modified Klammt apparatus, the dental arches were rapidly widened, therapeutic effects were better, rehabilitation of the muscles was more complete. Using the modified Klammt apparatus the children could easily speak, and thus the apparatus could be used longer than monoblocks which had a positive effect on the final therapeutic results in these cases.

Child, Preschool↗
PubMed1978

[Studies on the cutting ability of dental diamond points--the trial manufacture of the cutting test apparatus (author's transl)].

Diamond points and tungstencarbite burs are used as the dental cutting tools for many appliance accordingly with the many purpose of used positions. Notwithstanding that the dental cutting tools have been usually applied for many purpose of dental treatment, the paper on these studies have scarcely been reported. In this studies the test of dental cutting tools curried out using the diamond points and examined these characteristics. As the problems on the cutting tests are the push load of cutting tools and the cutting quantities. This studies tried to make the test apparatus for the cutting test of dental diamond points considering to dental treatments. The glass plates used for photograph are used for cutting materials supposing to the enamel properties of teeth and the cutting tests put into practice for the types of diamond points with different diameter. The cutting characteristics of the diamond points are examined with the using of the test results and are appreciated with the considering to the test apparatus.

Dental High-Speed Equipment↗