Biomedical subjects

D L Ramus

Publications and source records attributed to D L Ramus.

3 recordsLinked to original sources

PubMed1992

Reparative dentin: factors affecting its deposition.

Results of this study showed no correlation between the thickness or amount of reparative dentin deposited and the type of dental restorative material placed at either 5 or 8 weeks in controlled Class V cavity preparations in monkey teeth. Factors such as preparation trauma from the bur, operator hand instrumentation, and microleakage of bacterial toxins played a greater role in the stimulation of reparative dentin than did material irritation or toxicity. Some differences in the thickness of the reparative dentin deposited were noted when teeth were grouped according to the amount of remaining dentin.

Analysis of Variance↗

PubMed1989

Two-stage impression technique for overdentures.

Overdentures are supported by hard tissue and resilient tissue. Optimum distribution of functional load between these different tissue types is a challenge. A two-stage impression technique is proposed to eliminate much of the need for finished denture base modification. A first stage impression is made of the resting form of the soft tissue and is used to make a mucostatic metal base. A second impression is developed under occlusal pressure with modeling compound applied to the border and the surfaces of the metal base overlying the abutments. This procedure establishes border seal and relates ridge tissue displacement to the abutments. A final cast is made by using the metal base and modeling compound. Heat-cured acrylic resin is processed to the metal base on this cast. Adjustment of the tissue surface of the base is limited to surfaces overlying free marginal gingivae and axial surfaces of the abutments.

Alveolar Process↗

PubMed1989

Fixed partial dentures opposing complete dentures.

When fixed partial dentures are indicated in an arch opposing a complete denture, it is best to develop the occlusal surfaces of the fixed restorations at the same time that the opposing denture teeth are arranged in wax to permit greater flexibility and reduce the compromise in developing bilateral balanced occlusion. This article describes the development of bilaterally balanced occlusion between casting patterns for fixed partial dentures and a complete denture. The technique emulates the ease of arranging maxillary and mandibular denture teeth and can be used to develop fixed restorations with metal or porcelain occlusal surfaces. Porcelain occlusal surfaces are described because the use of porcelain is more technique sensitive.

Acrylic Resins↗