Quintessence Int 50 (2019), No. 8 19. Aug. 2019
Quintessence Int 50 (2019), No. 8 (19.08.2019)
Page 604-610, doi:10.3290/j.qi.a42694, PubMed:31286117
The use of retraction paste to simplify impression and cementation of ceramic veneers and crowns: 3-year follow-up report
Andreiuolo, Rafael Ferrone / Abreu, João Luiz Bittencourt de / Hirata, Ronaldo
Proper gingival displacement is an important prerequisite to obtain good quality impressions. Retraction pastes could eliminate the need for retraction cords, as they have advantages such as comfort reported by patients, faster technique, ease of use, no need for anesthesia, and reduced tissue trauma. The objective of this paper was to present a clinical case of ceramic veneers and crowns in which a retraction paste was used for gingival displacement during both the impression and cementation stages, with 3 years of follow-up. Treatment planning consisted of the replacement of preexisting crowns and ceramic veneers on the anterior teeth. After finishing the preparations, gingival displacement with Astringent Retraction Paste was performed without anesthesia or the use of cords and the impression was taken. Before cementation of the crowns and veneers, the Astringent Retraction Paste was applied. Avoiding the use of cords during cementation prevented trauma. The soft tissue margins remained stable and healthy after a period of 3 years. It can be concluded that retraction pastes could be indicated for displacement of soft tissue when preparation margins are at the gingival level or slightly intrasulcular prior to impressions, restoration cementations, direct restorations, and before relining provisional restorations. Clinical significance: The impression appointment can be traumatic to some patients. The use of cords for gingival displacement usually requires local anesthesia and is time consuming. Retraction astringent pastes instead of cords seems to be a good option for some cases in gingival tissue displacement.
Keywords: dental ceramics, dental impression materials, dental impression technique, prosthetic procedure, prosthodontics, restorative dentistry