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PubMed · 359785

Basic wax contouring for complete dentures.

R P Renner·R W Blakeslee
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Abstract

The form and contour of the polished surface of the denture base is an important factor in the appearance and function of complete dentures. It is the responsibility of the dentist to insure that the dental laboratory technician reproduces the proper anatomic contour of the denture base. With attention to details in the final wax-up, the finishing procedures will be minimal. The use of high shine is all that is needed to polish. If anatomy is lost in the investing procedure, and it is necessary to recarve it with acrylic resin burs, then it will be necessary to use both coarse and fine pumice and high shine to complete the dentures (Figs. 15 to 17). When one applies these basic principles, a denture surface is produced that will be both refreshing and natural in appearance and aid in the stability of the dentures in function. To our patients who are contemplating prosthodontic replacements, it should remove the fear of having to submit to accepting an unnatural restoration.

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Denture BasesDenture DesignDenture, CompleteDenture, Complete, LowerDenture, Complete, UpperWaxesJournal Article

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BibTeXRIS

R P Renner, R W Blakeslee. 1978. Basic wax contouring for complete dentures.. https://doi.org/10.1016/0022-3913(78)90044-6

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PubMed2007

Effect of implant support on distal extension removable partial dentures: in vitro assessment.

The implants in implant-supported removable partial dentures (RPDs) are placed in the edentulous ridge to stabilize the RPD and minimize the resultant rotational movement. This study investigated the effect of implant placement on RPD stability. A model simulating a mandibular bilateral distal extension missing was fabricated using epoxy resin and silicone impression material as thin (1 mm) and thick (2 mm) soft tissues. Five pressure sensors (PS-10K, Kyowa, Tokyo, Japan) were attached near the left and right first molars (#36 and #46), first premolars (#34 and #44) and medio-lingual alveolar crest. Five bilateral distal extension RPDs with Co-Cr frameworks were conventionally fabricated. After the implants were placed at the bilateral second molar areas, healing caps (4.5 mm high) were connected to the denture base with autopolymerized resin to support the RPD. As in a conventional RPD, sealing screws were placed without connecting them. Loads up to 5 kg were applied, and the pressure and displacement of the RPDs (n = 5) were simultaneously measured and analysed using the Wilcoxen test (alpha = 0.05). There was less pressure on both thin and thick soft tissues, the #36, #46 and the medio-lingual alveolar crest from the implant-supported RPD than from the conventional RPD (P < 0.05). There were no significant differences in pressure on #34 and #44 between the two RPDs (P > 0.05). There was significantly less denture displacement of the implant-supported RPD than of the conventional denture (P < 0.05). Implant support helped prevent the displacement of distal extension RPDs and decreased the pressure on soft tissues.

Denture Bases↗
PubMed2006

[Development of a light-polymerized resin for the record base. Part 1 Comparison with autopolymerizing resin].

PURPOSE: The record block for maxillomandibular registration of the denture is absolutely necessary in order to decide the mandibular position. This record block must provide sufficient strength so as not to cause deformation in the oral cavity. It must also fit the alveolar ridge well in order to keep accurate registration. Since most of the conventional materials for this purpose are not sufficient, a new specific light-polymerized resin was experimentally developed for the record base. METHODS: The mechanical strength and suitability of the new material were examined in comparison with a conventional autopolymerizing resin. RESULTS: 1) The transverse strength was equivalent to that of the autopolymerizing resin. 2) Although the shear bond strength was equivalent to the autopolymerizing resin, the intensity was drastically improved by the application of composite primer. 3) The light-polymerized resin and the autopolymerizing resin did not show any difference in suitability, and it was a clinical value without problem. CONCLUSIONS: From these findings, it was confirmed that the new light-polymerized resin had the physical property for clinical application as a material for the record base.

Denture Bases↗