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At least 1,117 records · Page 62Linked to original sources
PubMed1996

Conservative restoration of function and aesthetics in a bulimic patient: a case report.

Traditionally, the treatment of acid erosion lesions of the maxillary and mandibular dentition has been invasive, often utilizing full-coverage crown restorations. Intentional endodontic and post-and-core treatments have been used in the past to gain crown length for retention of cemented cast restorations. The learning objective of this article is to discuss the primary cause of acid erosion-bulimia nervosa-and present an alternative dental treatment modality. The alternative treatment uses conservative tooth preparation, dentin bonding technology, and pressed ceramic restorations, achieving aesthetic results. The indications and advantages are discussed, and a case report illustrates the clinical procedure. The importance of achieving the cessation of the purging habit as a prerequisite to dental treatment is emphasized.

Adult↗
PubMed1996

Aesthetic all-ceramic restorations: a philosophic and clinical review.

The current focus of aesthetic dentistry is on tooth-colored, metal-free restorations in the anterior and the posterior regions and the biocompatibility and toxicologic safety of these restorative materials. This article reviews eight years of clinical experience with all-porcelain restorations and documents the observations of several clinical cases. It discuss tooth preparation for all-ceramic inlays, onlays, and veneer and crown restorations, as well as isolation, etching, placement, bonding, and lightor dual-curing of the materials. The learning objective of this article is to share the experience and observations with other clinicians. The author concludes that restorations, identical to natural dentition, can be predictably achieved with current allporcelain systems and that critical scientific analysis of dentin bonding agents must continue. The utilization of all-porcelain material in multiple-unit bridges should still be viewed with caution, and further long-term experience is required.

Crowns↗
PubMed1996

The direct/indirect composite resin veneers: a case report.

Veneer restorations are well suited for conservative and aesthetic improvement of the anterior dentition. Laboratory fabricated porcelain and composite resin veneers present optimal aesthetics and durability. Although there are disadvantages associated with direct bonding, it provides control of color and contour for the operator, particularly in the case of a single anterior central incisor. Direct/indirect composite resin veneers utilize the advantages of both direct and indirect techniques in reconstruction of restorations with improved physical properties. The learning objective of this article is to review the available composite resins, opaquers, and tints, and present a step-by-step protocol for predictable restoration of discolored anterior dentition with direct/indirect heat-treated composite resin veneers in a single appointment. Patient evaluation, preoperative aesthetic considerations, selection of the restorative composite resins, and the clinical procedure are discussed.

Adolescent↗
PubMedDate not supplied

Diagnosis and treatment of dental caries-related emergencies in a children's hospital.

A comprehensive review of 362 caries-related emergency visits presenting to a children's hospital was completed to investigate aspects of care which have not been previously reported. Areas of interest included patient characteristics such as age and whether the emergency visit was the first contact with a dentist, association of the emergency visit with a nursing bottle habit, diagnoses, treatment provided, and behavior management techniques used at the emergency visit. The emergency appointment was the first contact with a dentist for 27% of all patients and for 52% of children 3.5 years and younger. Patient visits related to nursing caries totaled 19% and these patients had a disproportionately high share of all primary tooth diagnoses. Nursing caries patients accounted for 48% of patients requiring papoose restraint and were the majority of patients receiving multiple extractions. Papoose restraint was used most often for young patients needing extraction who presented during clinic hours and were treated by an attending dentist. Maxillary first and second primary molars were implicated in a high number of cellulitis patients (57%) yet represented only 23% of primary tooth diagnoses.

Abscess↗
PubMedDate not supplied

The current status of etched porcelain veneer restorations.

Since its introduction 10 years ago, the etched porcelain veneer restoration has performed exceedingly well. The union of etched porcelain, composite resin cement, and etched enamel has proven over this time to be an exceptionally durable and highly esthetic restoration. The author has placed more than 5,000 etched porcelain veneer restorations over the past 10 years, but has had to replace less than two percent of these restorations because of clinical failure. If properly constructed and placed, this restoration, has the potential to survive the hostile oral environment at least as long as any other dental restoration if not longer. This restoration should now be considered the modality of choice for many conditions that might previously have been treated with full coverage or direct composite bonding.

Acid Etching, Dental↗
PubMedDate not supplied

Fracture resistance of complex amalgam restorations.

This study evaluated fracture resistance provided to complex amalgam restorations by adhesive and mechanical resistance features. The occlusal surfaces of 30 extracted molar teeth of similar size were ground flat to approximately 2 mm coronal to the CEJ. The teeth were divided into three groups. Roots were notched and embedded in acrylic resin. In two groups, four TMS Minim stainless steel pins were placed into dentin at the line angles. A copper band matrix was applied to each specimen and reinforced with compound. After applying either Copalite or Amalgambond Plus, Tytin amalgam was condensed into the matrix. The bands and excess amalgam were removed 10 minutes later, and each amalgam occlusal surface was ground flat to give the amalgam restoration a 4 mm occlusal height. Specimens were thermocycled for 2500 cycles at 6-60 degrees C with a 30-second dwell time. They were then stored in deionized water for 1 month at room temperature. A 1 mm 45 degrees bevel was placed on the facio-occlusal angle of the amalgam. Each specimen was loaded to failure in compression at 45 degrees in an Instron Testing Machine at a crosshead speed of 5 mm/min. The groups were: Group 1, four Minim pins and Copalite; Group 2, four Minim pins and Amalgambond Plus; and Group 3, Amalgambond Plus only. The data were analyzed using a one-factor ANOVA and a Tukey B post hoc test. There was no significant difference between Groups 1 and 3. The Amalgambond Plus combined with pins provided significantly greater resistance to fracture than pins or Amalgambond Plus alone (P < 0.05).

Analysis of Variance↗
PubMed1995

Strain profiles in molars restored with posterior composite resins: effect of cavity size & restorative technique.

The objective of the study was to quantitatively compare peak strain in buccal & lingual aspects of human molar teeth restored with composite res in polymers as a function of: 1) cavity size, 2) restorative material, 3) restorative technique. Two composite resin materials were investigated: Herculite (sub micron filler particle) & P 50 (supra micron filler particle). Performance was compared to two different types of high copper amalgams. A total of 48 freshly extracted human molar teeth free from cracks or caries were used. MOD cavities were prepared with three different cavity sizes: 1 mm, 2.5 mm & 5 mm. Rectangular rosette strain gauges were applied centrally on the buccal & lingual surfaces of the prepared teeth. Strain measurements were recorded during subsequent cavity restoration procedures and curing cycles. A comparison of peak strains in the amalgam vs composites using bulk-pack technique showed significantly higher strain in the composite series. Highest strains were noted in the largest cavity size (5 mm). Slot preparation following restoration reduced strains in the composite materials. Subsequent re-filling of the slot increased strain, but still less than the initial value.

Analysis of Variance↗
PubMed1996

Dentin contamination protection after mechanical preparation for veneering.

PURPOSE: To evaluate in vivo the efficacy in preventing post-operative sensitivity and bacterial invasion of primed dentin that was left unprotected for 4 days after laminate veneer preparation. MATERIALS AND METHODS: Twelve vital, periodontically involved anterior teeth were prepared for experimental laminate veneers and divided into three groups: (1) Control group, in which the prepared surfaces were left unprotected after preparation; (2) Prepared dentin surfaces were cleaned with Tubulicid Red Label and covered with Tubulitec Primer; (3) All-Bond 2 Primer was applied to the prepared dentin surface. Post-operative sensitivity was evaluated immediately and a second appointment, 4 days later. The teeth were then extracted and examined by SEM. RESULTS: The application of a primer (Groups 2 and 3) prevented all sensitivity. After 4 days, the teeth in Group 1 were still sensitive to air blasts. Bacterial penetration into the unprotected tubules was observed in Group 1, but not in Groups 2 and 3.

Adult↗
PubMed1997

Building laminate veneers and fixed bridges with polymer glass technology.

A new type of material is being introduced to American dentistry. The material is a polymer glass, tested in Europe as Artglass. The material is purported to be equal to or better than porcelain for esthetic dentistry. The strength, color translucency, and color vitality allow minimal destruction of enamel for esthetics. An Artglass occlusal is less abrasive to enamel than porcelain and approximates gold. The characteristics of this material system introduces "minimal invasive dentistry" to routine dental repair and reconstruction. A case study of the senior author's reconstruction of his anterior teeth is presented.

Dental Bonding↗
PubMed1997

Conservative concepts for achieving anterior esthetics.

The options in conservative approaches to anterior esthetics include several that are often forgotten in favor of more complicated procedures. This article explores many of those treatments, including recontouring, abrasion and veneers.

Dental Enamel↗