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At least 379 records · Page 21Linked to original sources
PubMed1977

A method for using reversible hydrocolloid at high altitudes.

This study has shown that high-altitude boiling of reversible hydrocolloid in water alone is inadequate. It must be liquefied at a temperature of at least 100 degrees C. (212 degrees F). The use of propylene glycol alone in the liquefying bath or as an additive to water is effective in attaining this temperature. A microwave oven did not liquefy the reversible hydrocolloid adequately.

Altitude↗
PubMed1978

A technique for restoring abutments for removable partial dentures.

A technique was presented to restore a removable partial denture abutment so that the removable denture can continue to be used. The technique uses cold-curing acrylic resin in a rubber base impression form. The technique can be adapted to both direct and indirect procedures.

Acrylic Resins↗
PubMed1979

Complete dentures using the TMJ articulator.

A method of recording mandibular movements in a stereographic recording and a method of registering these movements by molding the controls in an articulator are described. Mandibular registrations are made using impressions rather than stabilized trial denture bases. The TMJ articulator used in the technique complies with all of the requirements of an articulator for prosthodontic treatment as outlined by the Academy of Denture Prosthetics.

Acrylic Resins↗
PubMed1980

The combined reversible hydrocolloid/irreversible hydrocolloid impression system.

1. Dentloid, a reversible hydrocolloid which had been altered to bond to irreversible hydrocolloid, demonstrated a bond with three irreversible hydrocolloids tested in combination with it. 2. Two conventional reversible hydrocolloids exhibited such weak bonding with irreversible hydrocolloid that it was impossible to make impressions with them. 3. The three irreversible hydrocolloids exhibited different bond strengths with Dentloid. 4. The Dentloid/irreversible hydrocolloid combination with the lowest bond strength exhibited the lowest dimensional stability. 5. Combined impressions of Dentloid with two of the three irreversible hydrocolloids exhibited dimensional stability that is a clinically acceptable. 6. Combinations of Dentloid with irreversible hydrocolloids not covered in this report should be verified for acceptable dimensional stability before clinical use. 7. The combination technique, in itself, proved to be easy and practical and overcomes many of the shortcomings inherent to conventional reversible hydrocolloid impression techniques. 8. Strict adherence to laboratory procedures for pouring a cast is as critical as for the conventional technique.

Chemical Phenomena↗
PubMed1980

Effect of retraction procedures on the periodontium in humans.

On the basis of wound healing and gingival recession caused by the three procedures, the copper-band retraction method was the most satisfactory. This tentative conclusion is based on the following reasons: 1. Retraction methods must be evaluated relative to the impression procedure and fit of the restoration. The long-range effects of the marginal fit are probably the most important factor for enhancing periodontal health. 2. This study involved only healthy periodontia of adolescent patients. Different healing might be observed in tissues characterized by gingivitis or periodontitis. 3. A broader study involving a greater range of procedures and conditions is recommended to evaluate each retraction technique. 4. This study involved teeth which had an adequate zone of attached gingiva. More complicated healing and perhaps altered sequences might be observed if the procedures were performed on gingival margins of alveolar mucosa, thin gingival walls, or areas of root prominence and thin cortical bone.

Adolescent↗
PubMed1980

Fabrication of custom trays from existing dentures.

This technique rapidly and simply provides a custom tray which duplicates the tissue surface of the patient's previous denture. The custom tray is then used as if it were the denture in a reline technique to make a final impression.

Dental Impression Materials↗