In vitro cold transference of bases and restorations.
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Calcium Hydroxide↗
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Acid and water solubility and strength of calcium hydroxide bases.
The solubility in water and 37% phosphoric acid, and compressive strength of four brands of hard-setting calcium hydroxide base materials were studied. Results were highly variable among brands and no correlations appeared to exist between properties studied. One product was significantly different from the others with regard to acid solubility and compressive strength.
Calcium Hydroxide↗
Use of a posterior composite resin to restore teeth and support enamel: report of case.
In selected cases in which appearance is important, a posterior composite resin may be used successfully to reinforce and restore a tooth with undermined, nonfunctional cusps. The restoration of teeth with compromised functional cusps is not recommended. Once the decision has been made to restore the tooth with a posterior composite resin, care must be taken to follow a technique to prevent problems after treatment that result from microleakage and contraction shrinkage.
Adult↗
The placement of bases beneath amalgam restorations: review of literature and recommendations for use.
On the basis of the literature, it can be concluded that there are no absolute rules regarding the placement of bases under amalgam restorations. The following recommendations are offered: A base should not be used unless its use is indicated clearly. When a base is indicated, it should be used with the minimum thickness necessary to achieve the desired result. Lost dentin should not be replaced with a base in an attempt to simulate an ideal preparation. A stronger base should not be placed over a weaker base, for strength. The entire base is only as strong as the weakest component. Covering the entire pulpal floor with a base should be avoided. Sound dentin surrounding the base should be left so that the amalgam restoration is supported by dentin as much as possible.
Calcium Hydroxide↗
An evaluation of a glass ionomer luting agent: bacterial leakage.
This study quantitatively evaluates the bacterial leakage beneath crowns cemented with a glass ionomer cement compared with those cemented with a polycarboxylate cement or a varnish plus zinc phosphate cement. Bacterial samples were taken from beneath full crowns cemented with the test luting agents 3, 10, and 56 days after cementation. Two-way analysis of variance of the resultant data showed a significant increase in bacterial counts for zinc phosphate, a significant decrease for polycarboxylate, and no change for glass ionomer. These findings suggest that bacterial leakage may not be the reason for the reported poor clinical response associated with glass ionomer luting agents.
Bacteria↗
Glass ionomer-composite sandwich technique.
Glass ionomer cement characteristics of biological acceptability, fluoride release, dentin bondability, and marginal integrity are excellent; at the same time, they have always been regarded as secondary choices for anterior and posterior restorations. Slow set, brittleness, poor finishability, lack of translucency, and the technique-sensitive nature of the glass ionomers hardly compare with the composite resins which are easier to handle, polishable, and esthetically acceptable. The combined ionomer-composite restoration provides a reliable chemical bond to dentin, micromechanical bonding of the composite to ionomer surface, and an acceptable esthetic result.
Composite Resins↗
Glass ionomers for infants, children, and adolescents.
When practitioners fully understand the nature of the glass ionomer materials and use them within their limitations, their use can improve the quality of restorative dental care for young patients. The materials for young patients can be classified as luting cements, dentin replacement liners and bases, and glass ionomer dentin and enamel restorative material. Future research efforts should be directed toward improving the glass ionomer cement by increasing fracture toughness and wear resistance, decreasing hardening time, and simplifying the sensitive handling technique.
Adolescent↗
Sensitivity restored of Class V abrasion/erosion lesions.
The effectiveness of restorative treatment in reducing sensitivity associated with the Class V erosion/abrasion lesion was evaluated and the efficacy of three tooth-colored restorative materials in reducing sensitivity was compared. The 108 lesions were restored with either glass ionomer restorative material, composite resin with a dentin bonding agent, or composite resin with a dentin bonding agent and a glass ionomer liner. Composite resin with glass-ionomer liner restorations significantly reduced sensitivity to air and hot and cold water. Glass ionomer restorations and restorations with composite resin and a dentin bonding agent significantly reduced sensitivity but were also associated with increased sensitivity to air and cold respectively in 20% to 30% of the lesions restored when evaluated at 6 months.
Adhesives↗
Glass ionomers: boosting amalgam's value.
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Acrylic Resins↗
Glass ionomers and esthetic dentistry: what the new properties mean to dentistry.
Ingenuity in research and development of glass ionomer systems has slowly but surely improved their handling properties and appearance. The author reviews the latest developments in relation to esthetic dentistry.
Child, Preschool↗
A look at state-of-the-art tooth-colored inlays and onlays.
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Composite Resins↗
Glass ionomers: current clinical developments.
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Dental Cavity Lining↗
Glass ionomer-resin: a maturing concept.
Glass ionomer-resin is now available from several companies. The products have been well-accepted for many uses. Expect continued improvements and new product introductions, but don't wait. These products satisfy many current needs in dentistry.
Acrylic Resins↗
Changing restorative traditions: the use of bases and liners.
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Calcium Hydroxide↗
Re-evaluating pulp protection: calcium hydroxide liners vs. cohesive hybridization.
Certain clinical and biological studies have reported that prepared dentin and the underlying pulp must be protected with a calcium hydroxide base and liners that supposedly impart biological and structural integrity to tissues. Since the mid-1950s, dentists have relied on a number of calcium hydroxide medicaments for this goal. But recent studies imply that clinicians need to re-evaluate the generous use of certain calcium hydroxide medicaments under restorations.
Acid Etching, Dental↗
A clinical evaluation of a resin-modified. Glass ionomer restorative material.
Compomers, resin-modified glass ionomers, were developed to improve the physical properties and clinical handling of glass ionomers. Compomers can be designed to be light-activated and used as restoratives or liners. This article reports data collected up to 12 months after placement of both compomer restorations and liners and is part of an ongoing study evaluating the performance of this material. Based on this data, the authors conclude that this new generation of light-activated glass-ionomer restoratives provides clinical results comparable to those recorded for composite resins at 12 months.
Acrylic Resins↗
Reduction of postoperative pain: a double-blind, randomized clinical trial.
The authors investigated the capability of two commonly used basing techniques to reduce postoperative sensitivity. The authors measured the time it took the subjects to respond to a standardized stimulus of cold water (cold response measure, or CRM) at baseline and one week after treatment. The authors found no significant reduction in the mean CRM for the group receiving Amalgambond Plus (Parkell), but they did find a significant decrease in the mean CRM for the group receiving Copalite (Harry J. Bosworth Co.) with or without Vitrebond (3M). The authors concluded that the subjects in the Amalgambond Plus group experienced no more sensitivity to cold at one week postoperative than they did at baseline, while the subjects in the Copalite/Vitrebond group did.
Adolescent↗