The objective of this paper was to provide procedures of final impressions in complete dentures, using standardized techniques and materials. Using this or that technique depends on the operator, the mouth conditions and / or time we dispose. The techniques can be grouped into mucostatic, mucocompressive, selective pressure, functional, and neutral zone impression techniques. Applying the correct impression technique and material, based on an individual’s oral condition, improves the quality of the prosthesis, which may improve quality of life.ĭental practitioners can make the impression in a single stage (abbreviated impression) or in two stages (preliminary impression made for the purposes of diagnosis, or for the construction of a tray, followed by final impression). 6 Clinicians make final impressions of complete dentures (CD) using different techniques and materials. The sectional technique is routinely taught in dental schools in the United States and is followed by a large number of general dental practitioners, and commonly used. The 2 techniques of border molding documented in published reports are the sectional and the single-step techniques. The process of shaping impression material along the borders of an impression tray by manipulating the soft tissues to duplicate the contour and size of the vestibules is known as border molding. It is important to thoroughly examine the patient’s mouth and select the most appropriate impression technique. Making accurate final impression for complete dentures is a multistage process that involves a preliminary impression, a customized final impression tray and a final border impression. Stability of complete lower dentures has challenged dentists and patients alike. The history of complete denture impression procedures has been influenced largely by the development of impression materials from which new techniques and ideas arose. 4Ĭomplete dentures are primarily mechanical devices but since they function in the oral cavity, they must be fashioned so that they are in harmony with the normal neuromuscular function. Regarding function, it affects occlusion and speech ability in patients, as well as changes of their appearance, which may result in psychosocial decompensation. Key words: Impression methods, material, complete denture prosthodontics, final impressions, Border moulding Introductionįrom an anatomical viewpoint, tooth loss comes to alveolar ridge resorption of the upper and lower jaw which are manifested in a reduction of the attached gingival surface and an increase of displaceable mucosal surface. While some special clinical situations may benefit from other combinations of materials and techniques. There was no support for the frequent textbook statement that the two-step procedure is necessary and superior to the one-step method. The success of every complete denture relies on the fulfilment of the three basic properties of retention, stability, and support. Selection of material is left to the decision of the dentist, who makes choices based on personal preferences and experience. The history of complete denture impression procedures have been influenced largely by the development of impression materials from which new techniques arose. *Clinic of dentistry of Monastir, Department of Prosthetic Dentistry, University of Monastir, Laboratory of oro-facial rehabilitation and oral health Abstract Ali Ben Rahma – Head of department, department of complete denture* Jaouadi Jamila – Director, department of prosthesis rehabilitation* Héla Haloui – Resident in the departement of complete denture* Oumaima Tayari – Resident in the departement of complete denture*ĭr. Final Impression in Complete Dentures Dental News – December Issue 2018ĭr.
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