Calcium hydroxide liners: a literature review

Abstract

ObjectiveThis review integrates the literature on cavity liners and current concepts of pulp protection with the aim of establishing a better understanding of the role of calcium hydroxide as a cavity liner.Materials and methodsA search was conducted through PubMed, MEDLINE, and Ovid for articles with the criteria for the following terms: cavity liners and bases, pulp protection, and calcium hydroxide liners. No specific inclusion or exclusion criteria were applied as to what articles would be included in this review. It was hoped that the extent of the literature reviewed would be as comprehensive as possible.ConclusionThis review underlines the fact that calcium hydroxide liners should only be used in the deepest spots in the cavity where the remaining dentine thickness is ≤0.5 mm. A protective layer of resin-modified glass ionomer should always follow the application of calcium hydroxide liners.

Evaluation of two different CAD‐CAM inlay‐onlays in a split‐mouth study: 2‐year clinical follow‐up

“…The preparations were detected with caries indicator (0710161, Sable Seek, Ultradent, Salt Lake City, Utah). If the remaining dentin tissue was close <0.5 mm to pulpal horns or pulpal chamber, it was decided to seal with calcium hydroxide for protection (150 519, Dycal, Dentsply, Milford, Delaware) …”

“…If the remaining dentin tissue was close <0.5 mm to pulpal horns or pulpal chamber, it was decided to seal with calcium hydroxide for protection (150 519, Dycal, Dentsply, Milford, Delaware). 20,21 All preparations were made by the same operator. The laboratory phase of the restorations was prepared by a single experienced technician at the Semdent Cerec Laboratory (Istanbul, Turkey) using Cerec The inlay-onlay restorations were adhesively luted under a rubber dam.…”

“…As observed in many previous studies, changes regarding marginal integrity were similar in the literature. 6,20,23,[36][37][38][39][40] This research described clinical and qualitative changes.…”

Bond strength and adaptation of pulp capping materials to dentin

“…Liner/base materials have been used for PC and dentin replacement. These materials have both a therapeutic influence and a seal on the dentin surfaces against the invasion of microorganisms and irritants as well as being a thermomechanical stimulus (Arandi, ). Poor adhesion and/or adaptation of PC materials to dentin produces gaps and causes fluid fluctuations into dentinal tubules.…”

“…GIC, which bonds chemicals to the tooth substrate and releases fluoride, is one of the most frequently used lining substances under composite materials in deep cavities. However, it is difficult to handle, has an extended setting time, a lower mechanical strength, and more susceptibility to moisture compared to resin‐modified GIC (RMGIC) (Arandi, ; Saad et al, ). Although light‐cured PC materials demonstrate high physical properties, low solubility, and easy handling, these materials may pull out from the dentin surface during light curing as a result of polymerization shrinkage (Braga, Hilton, & Ferracane, ; Bryant & Mahler, ).…”