Abstract
This present study describes an impression technique to rehabilitate patients with flabby ridge in pre-maxilla through complete dentures. The proposed technique consists on the association of nondisplacive impression of the flabby area in the primary and functional impression. Therefore, a primary impression was performed with irreversible hydrocolloid with a dual impression. The impression material was removed at the region corresponding to the flabby area, characterizing a window, where a re-impression was conducted with the same material in a more fluid consistency. The functional impression was executed with a custom tray with perforations at the flabby area fabricated over a primary anatomic cast previously relieved. As a result, an anatomic impression with reduced compression over the flabby ridge was obtained. Moreover, an accentuated decrease of the mucosa compression was obtained through the material overflow from the custom tray perforations at the functional impression. After the acrylization of the prosthetic piece, a delimited box corresponding to the flabby mucosa in the prosthesis base was verified. Thus, it is concluded that the association of techniques proposed in this study reduced the compression over the flabby ridge area resulting in a complete denture copying anatomically the flabby area at rest. Thereby, in this case through a precise negative reproduction, a more favorable retention of the maxillary complete denture was obtained in patients with flabby ridge at the pre-maxillary area.
Highlights
The presence of flabby mucosa at the alveolar maxillary ridge is common in people that use a maxillary complete denture associated to removable class I mandibular partial denture
The one-step impression is a technique with perforations, where the custom tray is fabricated and little spaced perforations are made at the flabby area
According to the knowledge from clinical practice and based on the scientific literature on the topic addressed, and considering the different possibilities of conducting the case presented, it was proposed to first perform an anatomical impression with double impression to avoid compression of the anterior maxillary flabby tissue, and a functional impression is proposed using an individual tray with perforations spaced in the region corresponding to the flabby tissue, the technique being proposed is simple and quick to perform, capable of reducing the concentration of forces and distortions when the material is compressed against the fabrics at the time of molding
Summary
The presence of flabby mucosa at the alveolar maxillary ridge is common in people that use a maxillary complete denture associated to removable class I mandibular partial denture. The cast’s excess of relief, the small space between the perforation at the custom tray and the isolated application of these techniques are characteristics that could favor the impression at rest As a differential, this present study proposes to describe a protocol of impression of the edentulous maxilla with anterior flabby tissue associating the techniques. First a primary anatomic impression with double impression is conducted to avoid compression of the flabby region, followed by the functional impression using an individual tray with spaced holes at the region corresponding to the flabby area It is expected, as an alternative hypothesis, a proposed simple and fast execution technique, capable to reduce the concentration of the force and distortion when the material is compressed against the tissue at the impression moment
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