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At least 595 records · Page 33Linked to original sources
PubMed1986

Temporary replacement of missing maxillary incisors.

A technique has been described in which a polycarbonate crown form was used as a temporary replacement for a missing central incisor. As with the other techniques of temporary replacement using acid etching, little chair time is required for the procedure. Additional advantages of this technique are that polycarbonate crown forms are inexpensive and readily available in most dental offices, and filling the crown form with composite resin and opening up the embrasures allows maximum bulk of resin at the connector surface without encountering the staining problems associated with composite resin pontics.

Acid Etching, Dental↗
PubMed1987

Functional modification of acrylic resin monoplane occlusions.

Patients with acrylic-resin monoplane occlusions were recalled over a 6-month to 6-year period. The intention was to obtain casts of the dentures in order to study the anteroposterior wear pattern for classifiable variations from the original monoplane occlusion. The lateral component of the wear pattern was not examined during this study. The project revealed wear patterns that were classifiable in terms of the recognized prosthetic occlusal plane forms--namely, the Monson curve, a reverse curve, or a persistence of the original monoplane. Right and left aspects of the maxillary occlusal plane were examined as separate entities and lateral asymmetry was evident in most patients. No attempt was made to quantify the extent of wear as in the studies of Harrison.

Acrylic Resins↗
PubMed1987

The microscopic appearance and effect of toothbrushing on extrinsically stained metal-ceramic restorations.

To clarify the nature and longevity of the extrinsic stain layer of metal-ceramic restorations, a series of experiments were undertaken. It was found, with microscopic examination, that there is little or no diffusion of the stain into the underlying porcelain and that at a thickness of 22 microns the extrinsic stain layer is grossly evident to an observer. Using a fluoride dentifrice caused no significant loss of either stain or surface integrity with 120,000 brush strokes (equivalent to 8.5 years). At 160,000 strokes (equivalent to 11.4 years) there was evidence of loss of surface integrity.

Color↗
PubMed1987

Dimensional stability of dentures processed in boilable acrylic resins: a comparative study.

An investigation was conducted to evaluate and compare the dimensional stability of three fast boilable denture resins with a conventional and a high-impact denture resin processed with a long-curing cycle. Although the boilable denture resins have been introduced to the dental profession and offer merits such as faster processing, saving time for the dentist, patient, and technician, reduction of energy costs, and dramatic increase in denture laboratory production without adding personnel or purchasing new equipment, the relevant dental literature is sparse. The results of this investigation indicate that all five denture resins produced dentures that shrink. Also measurements between certain teeth showed shrinkages. Linear shrinkages of denture bases and teeth distances were less than 1%. Flange-to-flange and molar-to-molar changes were less than 0.5 mm and 0.2 mm respectively. Maxillary complete dentures processed in boilable resins presented less distortion in the midpalatal area across the posterior section than dentures processed in the conventional heat-cured resin. Although linear changes reported in this investigation were thought to be clinically insignificant, clinical studies should be conducted to establish correlation with laboratory findings.

Acrylic Resins↗
PubMed1988

Occlusal considerations for partially or completely edentulous skeletal Class II patients. Part II: Treatment concepts.

Four basic concepts must be considered when developing the prosthetic occlusion for skeletal class II patients: (1) Centric relation must be used as a reference position to relate the mandible to the maxillae; (2) the posterior denture teeth must be positioned close to their former positions; (3) freedom of movement must be created in eccentric movements; and (4) multiple occlusal contacts must be provided in centric and eccentric positions. We have described a method that incorporates these basic concepts and provides a harmonious occlusal arrangement for both edentulous and partially edentulous class II patients.

Dental Occlusion, Balanced↗