Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Jakob Leirskar is active.

Publication


Featured researches published by Jakob Leirskar.


Journal of Prosthetic Dentistry | 1993

Saucer-shaped cavity preparation for composite resin restorations in class II carious lesions: Three-year results

Håkon Nordbø; Jakob Leirskar; Frithjof R. von der Fehr

This study determined the feasibility of saucer-shaped cavity preparations for composite resins in class II lesions. Saucer-shaped class II cavity preparations were restored with composite resin and subjected to clinical, radiographic, and replica cast evaluation (39 restorations) after 6, 18, and 36 months. The results indicated that the retention, resistance form, and wear resistance of the class II saucer-shaped cavity preparations were satisfactory after 3 years.


Dental Materials | 2003

The influence of resin coating on the shear punch strength of a high strength auto-cure glass ionomer

Jakob Leirskar; Håkon Nordbø; Graham J. Mount; H. Ngo

OBJECTIVES The aim of this study is to examine the influence of early water contact on the shear punch strength of a modern, high strength, auto-cure glass ionomer (Fuji IX GP). METHODS Specimens, 8.0mm in diameter and approximately 1.25mm thick, were prepared in metal washers, and allowed to remain covered by polyester strips for 7min, to ensure completion of the initial set. A minimum of 32 specimens was prepared for each set of experiments and they were divided into two equal groups. Following removal of the strips, the surfaces of the specimens in Group 1 were immediately coated on both sides with Fuji Coat LC and light cured for 10s. In Group 2 the specimens were left uncoated. All specimens were then placed in distilled water at 37 degrees C, and stored for periods of 24h, 1, 2, 5, or 8 weeks. The strength of the specimens was measured at each time interval in the shear mode by a punch test in a universal testing machine. RESULTS The mean strength of the coated specimens in Group 1, which had been protected against exposure to water, increased significantly on ageing from 67.1 (24h) to 78.0MPa (1 week), with no further significant change in strength. The mean strength of the specimens in Group 2 increased significantly from 75.7 (24h) to 83.3 (1 week) and 91.9MPa (2 weeks), with no further significant change in strength. Uncoated specimens were stronger at all points of time. The difference was statistically significant at 24h, 2, 5, and 8 weeks (P<0.05), but not at 1 week (P=0.061). Significance. The results suggest that, contrary to the usual instructions for placement of glass ionomer, early access to water will positively influence the shear punch strength of Fuji IX GP.


European Journal of Oral Sciences | 1974

On the mechanism of cytotoxicity of silver and copper amalgams in a cell culture system.

Jakob Leirskar


European Journal of Oral Sciences | 1972

A methodologic study of the effect of dental materials on growth and adhesion of animal cells in vitro

Jakob Leirskar; Kristen Helgeland


European Journal of Oral Sciences | 1972

A further testing of the effect of dental materials on growth and adhesion of animal cells in vitro

Kristen Helgeland; Jakob Leirskar


European Journal of Oral Sciences | 1976

pH and the cytotoxicity of fluoride in an animal cell culture system

Kristen Helgeland; Jakob Leirskar


European Journal of Oral Sciences | 1977

Toxicity of some dental cements in a cell culture system

Jakob Leirskar; Kristen Helgeland


European Journal of Oral Sciences | 1973

Silicate cement in a cell culture system

Kristen Helgeland; Jakob Leirskar


Journal of Periodontal Research | 1971

In vitro experiments on gingival exudate measurements. II. The influence of different filter papers and ascending and descending chromatography on mobility.

Jakob Leirskar


Journal of Periodontal Research | 1971

In vitro experiments on gingival exudate mesurements

Jakob Leirskar

Collaboration


Dive into the Jakob Leirskar's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

H. Ngo

University of Adelaide

View shared research outputs
Researchain Logo
Decentralizing Knowledge