What is altered cast impression?

Altered cast impression technique is commonly used for the mandibular distal extension partially edentulous arches. Oral tissues that have been displaced during the impression procedure attempt to regain the anatomic form and they may get inflamed if the denture base does not permit them to do so.

What is cast technique?

Casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. Casting is most often used for making complex shapes that would be otherwise difficult or uneconomical to make by other methods.

What is selective pressure impression technique?

The selective-pressure impression technique combines aspects of both techniques, as pressure is applied to certain tissues while other areas are captured with minimal pressure. This impression philosophy is credited to Boucher5 and is based on a histologic understanding of the supporting tissues.

What is the swing lock denture?

The swing-lock removable partial denture (RPD) is a little-taught RPD concept that offers clinicians additional choices in the treatment of perplexing situations involving periodontally compromised dentitions, missing key abutments, and other clinical situations in which a conventional RPD design may not be feasible.

What is split cast mounting?

Split cast mounting is the method of mounting casts on the articulator. It is essentially a maxillary cast constructed in two parts with a horizontal division. The procedure allows for the verification of the accuracy of the initial mounting and the ease of removal and replacement of the cast.

What is relining and rebasing?

Relining: Is the procedures used to resurface the tissue side of a denture with new base material, thus producing an accurate adaptation to the denture foundation area. Rebasing: Is the process of replacing the entire denture base material on an existing prosthesis. Only the original teeth and their arrangement remain.

What is casting in programming?

Casting. Sometimes a programmer needs to change the data type of the contents of a variable. For example, an integer may need to be converted to a string in order to be displayed as part of a message. This process is known as casting .

What are the steps involved in casting?

The liquefied metal is then cooled and allowed to harden, before being extracted from the mold in a solidified form. There are five steps in the casting process: patternmaking, molding, melting and pouring, shakeout, and heat treatment and inspection.

What causes flabby Ridge?

A fibrous or flabby ridge is a superficial area of mobile soft tissue affecting the maxillary or mandibular alveolar ridges. It can develop when hyperplastic soft tissue replaces the alveolar bone and is a common finding particularly in the upper anterior region of long term denture wearers.

What is Mucostatic impression technique?

Mucostatic means that the impression is taken with the mucosa in its normal resting position. These impressions will generally lead to a denture which has a good fit during rest, but during chewing, the denture will tend to pivot around incompressible areas (e.g. torus palatinus) and dig into compressible areas.