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Biomedical subjects

O Sykora

Publications and source records attributed to O Sykora.

At least 19 recordsLinked to original sources
PubMed1990

Comparison of the dimensional stability of two waxes and two acrylic resin processing techniques in the production of complete dentures.

Two base plate waxes and two denture processing techniques were independently compared for dimensional stability. Occlusion rims were constructed from extra hard and medium soft base plate waxes and teeth were set. Acrylic resin bases were processed by a trial packing technique, and a continuous injection system. Tooth movement was measured in the horizontal and vertical planes to assess wax and denture base dimensional changes at various steps in the process, and after 1, 3, and 8 weeks of denture base immersion in water at room temperature. Posterior palatal border adaptation, incisal pin opening and loss of centric occlusion contacts, were also measured. Results showed there were no significant differences between the two waxes as determined by tooth movement in the horizontal and vertical planes. In comparison to the trial packing technique, the continuous injection system showed significantly smaller changes for incisal pin opening and loss of centric occlusion, and better adaptation of the posterior palatal border to the cast. Measurement of tooth movement in the horizontal and vertical planes showed no significant differences between the two processing techniques for times prior to immersion in water, whereas after 8 weeks immersion the continuous injection technique showed smaller dimensional changes, relative to the original dimensions at the time of investing.

Acrylic Resins↗
PubMed1989

Dental technology education in Canada.

The dental technology education in Canada is described through a brief introductory historical overview with the emphasis placed on the present status of dental technology teaching institutions, accreditation system, admission policies, curriculum content, requirements for registration or certification and the comparison of provincial board examinations. The role and the responsibility of organized dentistry is stressed on shaping the future trends in dental technology.

Canada↗
PubMed1983

Fabrication of a posterior shade guide for removable partial dentures.

Even under the best circumstances, posterior tooth color discrimination is still a subjective decision. Most shade guides do not follow a logical pattern in number or graduation of Hue, Value, and Chroma. Moreover, the shade guides are only obtainable with anterior teeth, usually maxillary central incisors. The fabrication of a first premolar shade guide is a step in the direction of making the posterior esthetic requirements more easily attainable for the dentist and the final result more satisfying for the patient. One can also use the various "broken sets" of acrylic resin teeth to achieve the necessary combination of posterior shades if cost is a factor and uniformity in molds is not required.

Acrylic Resins↗
PubMed1980

A new tripoding technique.

A newly developed tripoding technique using an MS Level has been described. For the technician, this technique allows a relatively fast, easy, and exact reproduction of the original path of insertion as designated by the dentist.

Dental Articulators↗
PubMed1978

Extracoronal removable partial denture service in Canada.

Remarkable uniformity exists in the teaching of removable partial denture prosthodont,cs in Canadian dental schools. The removable partial denture services requested by dentists and those provided by commercial dental laboratories do not appear to be as similar. A greater emphasis on continuing education for the dentist is needed, along with better and more detailed communication between the dentist and the dental laboratory. An educational program for dental laboratory technicians is also needed to further this goal.

Canada↗