How to take impression of flabby ridge?
A mucocompressive impression is first made of the normal tissues with zinc oxide and eugenol using a custom tray. Once set, a low viscosity mix of impression plaster is then painted onto the flabby tissues through the window. Once set, the entire impression is removed.
What is flabby tissue?
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?
Mucostatic means that the impression is taken with the mucosa in its normal resting position. Mucocompressive means that the impression is taken when the mucosa is subject to compression. These impressions will generally lead to a denture that is most stable during function but not at rest.
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 liquid supported denture?
Liquid-supported denture technique allows continued adaptation of denture to the mucosa both at resting and functional state. A complete denture prosthesis is unacceptable if it violates the foundation on which it rests.
What type of impression material is alginate?
hydrocolloid impression material
Alginate is an elastic, irreversible hydrocolloid impression material. Irreversible hydrocolloid impressions form an inseparable part of indirect restorations. Alginate is one of the most frequently used dental materials; and alginate impression is a simple, cost-effective, and indispensable part of dental practice.
Which technique can be used for impressions of hyperplastic tissues?
The window impression technique uses a custom tray with a window over flabby tissues and a mucostatic impression material to minimize distortion of tissues while making an impression.
What is impression technique?
Impression : A negative likeness or copy in reverse of the surface of an object ; an imprint of teeth and adjacent structure for use in dentistry. 3. Impression trays : A receptacle in to which suitable impression material is placed to make negative replica.
What is agar in dentistry?
Agar is an aqueous impression material used for recording maximum details; for example, as in the production of dies for fixed restorations. Agar is also known as a reversible hydrocolloidal impression material. It gives good detail reproduction than any other material.
Who has given selective pressure technique?
Heartwell mentions two techniques for achieving selective pressure for maxillary impressions. In the first technique he makes the primary impression with impression compound with a non perforated stock tray, the borders are refined, later space is provided in selected areas by scraping of the impression compound.
What is SPA factor?
The SPA factor—the evaluation of sex, personality, and age—was first summarized by Sears in his concept of esthetic dental prosthetics. 13,14. When the laterals are nearly as broad as the other front teeth, the set is presumed to have a strong or masculine appearance.
Is there a new technique for impressions of flabby tissues?
In this paper, the authors have proposed a newer technique of impression making of the flabby tissues using a combination of readily available newer and older materials to ensure an accurate and easy impression of these tissues. 1. Introduction
What is a flabby Ridge?
Flabby tissues present a challenging clinical scenario for the clinician to ensure a well-fitting prosthesis. Flabby ridge also called as fibrous ridge or displaceable ridge is mobile soft tissue present on the superficial aspect of the alveolar ridge.
What is a two-tray impression technique?
] described a two-tray impression technique where two trays are fabricated and impression is recorded with two different materials and is then oriented intraorally. Osborne [ 8 J. Osborne]
How do you fix a flabby Ridge?
Management of a flabby ridge is mainly by three approaches:(1)surgical removal of fibrous tissue prior to conventional prosthodontics,(2)implant retained prosthesis(i)fixed,(ii)removable,(3)conventional prosthodontics without surgical intervention [6, 7].