Defining the posterior palatal seal on a definitive impression for a maxillary complete denture by using a nonfluid wax addition technique

Técnicas e materiais de impressão em prótese total lecionados em pós-graduações ibéricas

“…O mesmo se passa no estudo de Mehra et al 4 A cera tem a vantagem de ser fácil de manipular e de se separar do modelo de gesso. 4,13 Contudo, existe a possibilidade de distorção ou deslocamento da cera durante a inserção ou remoção da moldeira da cavidade oral. 4,7 Todos os participantes, deste estudo, afirmaram utilizar alginato para a impressão preliminar, semelhante ao verificado em diversos artigos científicos.…”

Use of Resin‐Based Provisional Material to Create the Posterior Palatal Seal in Complete Denture Definitive Impressions

“…The potential advantage of the current technique is that the resin‐based provisional material may have enough strength to displace the tissues sufficiently in the soft palate due to the characteristic of the material; however, the clinician needs to pay careful attention to avoid the overdisplacement of the tissues. For this, it is necessary to palpate the seal area to identify the amount of compression necessary to offer adequate retention . Furthermore, this material may remain dimensionally stable during the impression procedure or cast production because it does not suffer distortion due to temperature as does body temperature impression wax .…”

“…An appropriately designed PPS is an important factor in determining denture retention . In this context, several techniques are described in the literature . Techniques to develop the PPS consist of (1) the arbitrary technique of scraping the cast before denture processing, (2) the selective loading impression technique, and (3) the physiologic impression technique …”

“…3 In this context, several techniques are described in the literature. 1,2,4,5 Techniques to develop the PPS consist of (1) the arbitrary technique of scraping the cast before denture processing, 4,5 (2) the selective loading impression technique, 5 and (3) the physiologic impression technique. 1,2,5 Provisional materials are commonly used in different dental clinical situations, 6-8 and they are divided into different groups according to their composition: 6,9 resin-based provisional materials are readily available today.…”

“…1,2,4,5 Techniques to develop the PPS consist of (1) the arbitrary technique of scraping the cast before denture processing, 4,5 (2) the selective loading impression technique, 5 and (3) the physiologic impression technique. 1,2,5 Provisional materials are commonly used in different dental clinical situations, 6-8 and they are divided into different groups according to their composition: 6,9 resin-based provisional materials are readily available today. [6][7][8][9] These materials are composed of resinous matrix-based composites of BIS-GMA, silicon dioxide, groups of dimethacrylates, and organic filler particles, 10 which are easy to place and polymerize using conventional light-curing equipment.…”