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Editorial
Research
Effect of Home-Use Fluoride Gels on Resin-modified Glass-Ionomer Cements.
Clinical Relevance:
Resin-modified glass ionomers show improved resistance to APF gels when compared to conventional glass ionomers.
Study on the Radiopacity of Different Shades of Resin-modified Glass-Ionomer Restorative Materials.
Clinical Relevance:
No significant difference in radiopacity was found among the various shades within three resin-modified glass-ionomer restorative materials.
Effects of Surface Treatments on Amalgam Repair.
Clinical Relevance:
When repairing an existing amalgam restoration, roughening the surface with a #557 carbide bur yields higher repair strength than treating the surface with air abrasion of 50΅m aluminum oxide, Amalgambond Plus, or retentive undercuts.
Monkey Pulpal Responses to Conventional and Adhesive Luting Cements.
Clinical Relevance:
The pulpal response to a combination of an adhesive resin and luting composite used for cementation of metal inlays was comparable to those of conventional dental luting cements.
Microleakage of Dentin/Amalgam Alloy Bonding Agents: Results after 1 Year.
Clinical Relevance:
In vitro data indicate that dentin bond-resin liners may clinically reduce microleakage with high-copper amalgams after 1 year.
The Effect of Three Finishing Systems on Four Esthetic Restorative Materials.
Clinical Relevance:
Abrasive impregnated disks and aluminum oxide disks provided smoother finished surfaces on glass-ionomer and microfilled composite resin materials than did diamond and carbide finishing burs.
Book Reviews
Editorial
Honesty, Treatment Decisions, and Other Illusions of Life
Research
Evaluation of Curing Units Used in Private Dental Offices.
Clinical Relevance:
It is important to check curing lights frequently to ensure that adequate light intensity is maintained.
Effect of Eugenol-containing Temporary Cements on Bond Strength of Composite to Dentin.
Clinical Relevance:
Shear bond strength of composite to dentin does not seem to be affected after pretreatment with eugenol-containing or eugenol-free temporary cements.
Effect of Eugenol-containing Temporary Cements on Bond Strength of Composite to Enamel.
Clinical Relevance:
Eugenol-containing and eugenol-free temporary cements or filling materials had no adverse effect on shear bond strength of a dual-curing resin luting cement to enamel.
Shear Bond Strengths of Six Bonding Systems Using the Pushout Method of In Vitro Testing.
Clinical Relevance:
Some of the more recently introduced dentin adhesives showed significant differences in in vitro shear bond strengths.
Clinical Evaluation of a Polyacid-modified Resin Composite (Compomer).
Clinical Relevance:
Dyract showed mixed promise as a direct tooth-colored restorative material in nonstress-bearing areas.
Artificial Secondary Caries around Two New F-containing Restoratives.
Clinical Relevance:
Light-cured fluoride-releasing restorations can inhibit caries-like lesions.
Polymerization of Composite Resins: Argon Laser vs Conventional Light.
Clinical Relevance:
The argon laser adequately polymerized composite resin, as indicated by Knoop hardness values, to a depth of 2 mm in half the time for the hybrid and two-thirds the time for the microfill composite resin compared to a conventional light-curing unit.
The Effect of Amalgam Overhangs on Alveolar Bone Height as a Function of Patient Age and Overhang width.
Clinical Relevance:
Any radiographically visible overhanging amalgam creates an unacceptable oral situation.
Awards
Clinician of the Year Award:
Distinguished Member Award:
Editorial
Coming to Terms with Terminology
Research
Early Fracture Resistance of Amalgapin-retained Complex amalgam Restorations.
Clinical Relevance:
The combination of spherical and admixed amalgam alloys in a restoration may reduce the potential for early dislodgment while allowing time for carving.
Effects of Lining Materials on Shear Bond Strength of Amalgam and Gallium Alloy Restorations.
Clinical Relevance:
The use of Vitrabond, Vitremer, or Resinomer as a liner significantly enhanced the shear bond strength of amalgam and gallium alloy restorations.
Shear Bond Strength of Immediately Repaired Light-cured Composite Resin Restorations.
Clinical Relevance:
An air-inhibited layer should not be allowed to form on the surface of a newly placed composite resin restoration prior to its immediate repair by a layer of the same resin.
Using Double-poured Alginate Impressions to Fabricate Bleaching Trays.
Clinical Relevance:
An alginate impression can be poured twice with the same degree of accuracy as two separate impressions, provided that during the setting of the first pour of stone, the alginate impression is kept humid by wrapping in a wet paper towel and the impression is repoured within 45 minutes of the initial pour.
Weight change of Various Light-cured Restorative Materials after Water Immersion.
Clinical Relevance:
Compared to conventional glass-ionomer cement, several light-cured glass-ionomer cements and other restorative materials showed significant increases or decreases in weight after water immersion. Resin composites demonstrated the least water sorption.
Temperature and Humidity Effects on Bond Strength of a Dentinal Adhesive.
Clinical Relevance:
Conditions of humidity and temperature simulating those found intraorally can have a significant effect on the adhesive resin-to-dentin bond strength.
Resin-modified Glass Ionomers: Dentin Bond Strength vs Time.
Clinical Relevance:
It is important to consider the rate of development of dentin adhesion to allow the materials sufficient maturation time prior to functional loading or other external stress applications.
Effect of Various Infection-Control Methods for Light-Cure Units on the Cure of Composite Resins.
Clinical Relevance:
The use of a plastic glove or cellophane wrap is recommended for protecting the light-curing unit tip from cross contamination.
Awards
Hollenback Prize for 1998
Award of Excellence
Editorial
Has Competence Replaced Excellence?
Buonocore Memorial Lecture
Materials of the Future: Preservative or Restorative?, 1998
Research
Repairability of Three Resin-modified Glass-Ionomer Restorative Materials.
Clinical Relevance:
Time of repair of resin-modified glass-ionomer materials significantly affects bond strength.
Repair of New-Generation Tooth-colored Restoratives: Methods of Surface Conditioning to Achieve Bonding.
Clinical Relevance:
Surface conditioning of resin-modified glass-ionomer cements does not enhance repair bond strengths. For polyacid-modified composites, repair bond strengths were enhanced by the application of low-viscosity resin after surface conditioning.
Factors Affecting Light Transmission of Single-Use, Plastic Light-curing Tips.
Clinical Relevance:
Curing-light transmission through single-use, plastic light-curing tips was found to provide adequate light-intensity levels, provided the operator is knowledgeable of important differences in handling characteristics between these devices and conventional, glass fiber-optic light guides currently in use.
Resin-infiltrated Dentin Layer Formation of New Bonding Systems.
Clinical Relevance:
Self-etching systems, despite their limited RIDL thickness, produced the highest immediate bond strengths.
Bonding of Amalgam and a Gallium Alloy to Bovine Dentin.
Clinical Relevance:
The dentin bonding systems used in this study created weak bond strengths to dentin for both Permite C and Galloy.
Clinical Article
Intraoral Repair of the Fractured Porcelain Restoration.
Abstracts
Book Reviews
Operative Pearls
Editorial
The Death of a Professional School: Does Anyone Really Care?
Research
Fluoride-releasing Dental Restorative Materials.
Effects of Sealers and Liners on Marginal Leakage of Amalgam and Gallium Alloy Restorations.
Clinical Relevance:
The use of a varnish, glass ionomer, or adhesive resin sealer or liner significantly reduced marginal leakage around amalgam and gallium alloy restorations.
Selective Caries Removal with Air Abrasion.
Clinical Relevance:
Air abrasion with particles of similar hardness to that of intact dentin could selectively remove carious dentin.
Evaluation of Acidic Primers in Microleakage of Class 5 Composite Resin Restorations.
Clinical Relevance:
The results of this in vitro study indicate that both Clearfil Liner Bond 2 and Denthesive II may be used with or without etching on both enamel and dentin to restore class 5 cavity preparations.
Effects of Etchant, Etching Period, and Silane Priming on Bond Strength to Porcelain of Composite Resin.
Clinical Relevance:
Etching feldspathic porcelain with hydrofluoric acid for more than 30 seconds followed by silane priming considerably enhance bond strength of composite resin to the porcelain.
Influence of Air-Abrasion Treatment on the Interfacial Bond between Composite and Dentin.
Clinical Relevance:
Adaptation between composite resin and cavity walls located in dentin is significantly enhanced by combining air-abrasion treatment with the application of a dentin adhesive; however, the obtained interfacial bond cannot prevent gap formation between composite and dentin due to thermal load.
Color Attributes and Accuracy of Vita-based manufacturers' Shade Guides.
Clinical Relevance:
Manufacturers' shade guides are not similar to the Vita Lumin shade guide to which they are supposedly keyed.
Change in Size of Replaced Amalgam Restorations: a Methodological Study.
Clinical Relevance:
If marginal discrepancies or recurrent caries were present, replacement restorations showed a statistically significant increase in size compared with the original restorations.
Operative Pearls
Editorial
Problem-based learning: Not a New Paradigm
Research
An In Vitro Study of the Effect of Restorative Technique on Marginal Leakage in Posterior Composites.
Clinical Relevance:
The matrix system and insertion technique exhibited minor influence on microleakage of conservative posterior MOD light-cured resin composite restorations.
Clinical Evaluation of a Resin-modified Glass-Ionomer Adhesive System.
Clinical Relevance:
At 1 year, a resin-modified glass-ionomer adhesive was highly successful in retaining resin composite in nonundercut cervical cavity preparations.
Dyes for Caries Detection Influence Sound Dentin Bond Strength.
Clinical Relevance:
Dyes used for caries detection can affect the bond strength of adhesive materials to sound dentin.
The Heat Sink and Its Relationship to Reducing heat during Pin-Reduction Procedures.
Clinical Relevance:
When shortening TMS self-threading pins with a high-speed handpiece and bur, cotton forceps placed below the cutting bur most effectively served as a heat sink to reduce the heat transmitted through the pin to the tooth.
Evaluation of Custom Occlusal Matrix Technique for Posterior Light-cured Composites
Clinical Relevance:
Clear custom occlusal matrices reduce placement and finishing time and improve surface smoothness when compared to a standard technique.
Short-Term Reaction of Exposed Monkey Pulp beneath Adhesive Resins.
Clinical Relevance:
Healing of exposed dental pulp beneath adhesive resin capping slightly differs depending on the materials.
6-Year Clinical Evaluation of Fired Ceramic Inlays.
Clinical Relevance:
In vivo longevity was observed in 92% of fired ceramic inlay restorations at 6 years.
Loss of Sound Tooth Structure When Replacing Amalgam Restorations by Adhesive Inlays.
Clinical Relevance:
The replacement of posterior amalgam restorations by adhesive inlays required the removal of a significant amount of sound tooth structure.
Book Reviews
Operative Pearls
(C) Operative Dentistry, 1998