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Biomedical subjects

J Rukavina

Publications and source records attributed to J Rukavina.

5 recordsLinked to original sources
PubMed1991

Indium light source for curing composite resins.

There is an existing problem of cumulative hazardous effect of violet and near ultra-violet light which is produced by standard polymerisation units. Another restrict is shallow depth of cure, particularly of darker composite shades in premolar and molar region. Searching for better light source we used indium resonance lines from several indium high pressure lamps and tested curing effect on three different composite resins. The overall results are better with the lamp in which two strong resonance lines of indium are present, rather than with a lamp with just one strong resonance line. The improvements in lamp design are necessary to overcome conventional polymerisation lamps.

Composite Resins↗
PubMed1990

Zinc and sodium high pressure lamps for curing composite resins.

Polymerisation characteristics of conventional units for curing composite resins are insufficient considering handling feasibilities particularly in the premolar and molar region. There is also hazardous ocular effect of near ultra-violet part of visible spectra. Sodium high pressure lamp technology has been applied to develop a new high pressure zinc lamp, which is for the first time used for curing composite materials. The results of polymerisation measurements show that future improvements over the usual halogen light sources are possible. Zinc lamp was also compared with the high pressure sodium lamp filled with mercury or cadmium.

Cadmium↗
PubMedDate not supplied

[Use of the EEA stapler in surgery of the rectum and rectosigmoid junction].

The application of mechanic sewing apparatus has obtained significant position in surgery of gastrointestinal tract. The EEA stapler (ILS Proximate) is improved, suitable and useful instrument for the performance of anastomosis after resection, and technically is equivalent to the normal suture techniques. It is especially convenient for the creation of low rectal anastomoses, thus definitive anus preter can be avoided. In 10 cases of rectal carcinoma, anterior resections and stapled anastomoses (3 were below 7 cm from anal border) were applied. In spite of insufficient number of surgically treated cases, surgical treatment was without technical problems and without postoperative dehiscence. Especially at low anastomoses, the importance of satisfactory suture techniques, adequate vascularization, avoidance of tissue tension, adequate selection and regulation of instruments are emphasized.

Anastomosis, Surgical↗