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Biomedical subjects

J Odegaard

Publications and source records attributed to J Odegaard.

10 recordsLinked to original sources
PubMed1992

[The effect of the different metal components on bracket adhesive strength in the Silicoater procedure].

This study was undertaken to test the theory that different kind of metal alloys can influence the bond strength of the silane treated bracket bases. Seven different types of brackets, each with different metal properties, were tested. 20 brackets of each type were used, half of them were silanated with a special Silicoater treatment. The following conclusions can be made: 1. The silane coated plain bracket demonstrated a higher bond strength than all the tested untreated brackets; 2. the brackets of the company Dentaurum demonstrated a statistically significant higher bond strength than the brackets of all the other companies.

Dental Alloys↗
PubMed1991

[Bonding strength of brackets with and without silane coating].

This study was undertaken to show that a silane treated bracket base can provide a better bonding to the enamel than conventional bonding bases commercially available. Five different types of metal brackets, each with different retentive properties, were tested. 20 brackets of each type were used, half of them silanated with a special silicoater treatment. The brackets were bonded to the surface of the teeth with Concise Enamel Bond and were then tested to failure in an Instron testing machine after 28 days. The following conclusions can be drawn from the study: 1. Silane-coated bracket bases demonstrated a higher bonding strength than the conventional bases, 2. silane treatment of plain bases is an effective method for the bonding of brackets to teeth, similiar to non-silane-boated brackets with additional mechanical retentive devices.

Acrylic Resins↗
PubMed1990

The use of visible light-curing composites in bonding ceramic brackets.

Three hundred and fifty bovine teeth were bonded with a ceramic bracket using nine different materials. Five of the materials were composites used in conservative dentistry, two were light-curing orthodontic adhesive test materials, and two were chemically curing adhesives. Four of the materials were modified by dilution with resin. With the proper consistency, it was found that the use of primer was not necessary. Adequate strength was observed within a 20-second curing time. No statistical difference in bond strength was observed among the materials. It is concluded that light-curing adhesives can offer several advantages in the bonding of ceramic brackets.

Aluminum Oxide↗
PubMed1988

Shear bond strength of metal brackets compared with a new ceramic bracket.

One hundred twenty bovine teeth were bonded with two types of metal brackets and a new ceramic bracket for comparison. Two different adhesives were used, a so-called no-mix and a paste/paste adhesive. The shear bond strength of the ceramic bracket was found to be superior for both adhesives. Bond failure with the ceramic bracket occurred predominantly in the enamel/adhesive interface; the failure site for the metal bracket was mainly in the bracket/adhesive interface. It is concluded that the bond strength between the ceramic bracket and the adhesive in shear mode is stronger than that between the adhesive and the enamel.

Adhesiveness↗
PubMed1984

Comparison of bone resorption at one-step and two-step mandibular endosseous implants in dogs.

Endosseous dental implants have been inserted into dog jaw bone following two different implantation principles. Using the two-step procedure, the implant is left submerged, covered by the mucoperiosteum for a healing period, before communication with the oral cavity is established. According to the one-step procedure, this communication is established peroperatively. In order to estimate radiographically the degree of bone resorption following the two-step as compared to the one-step procedure, the former was used on the right and the latter on the left side of the mandible in two dogs. Periodic identical intraoral radiographs revealed bone resorption in the neck area of all implants. After a 1-yr period with bilateral bridges, the vertical resorption varied between 3 and 5 mm. No difference was found between the two methods concerning this bone resorption. The observation seems to be contrary to the general opinion on the matter, and pertinent investigations with the present model will be performed in a human material.

Animals↗