Pulp response after application of two resin modified glass ionomer cements (RMGICs) in deep cavities of prepared human teeth.

Objectives: This study evaluated the human pulp response to the application of two RMGICs in deep cavities in vivo.

Methods: The cavity floor prepared on the buccal surface of 34 premolars was lined with VBP (VBP), Vitrebond (VB) or Dycal® (DY), and restored with composite resin. Additional teeth were used as an intact control group.

Clinical evaluation of a resin-modified glass-ionomer liner for cervical dentin hypersensitivity treatment.

Purpose: To evaluate the effectiveness of two agents for treating cervical dentin sensitivity associated with gingival recession or noncarious cervical lesions.

Methods: 44 patients with at least mild sensitivity affecting cervical dentin were enrolled in a longitudinal randomized clinical trial. A resin-based desensitizer or an experimental glass-ionomer was assigned to treat at most two teeth from each side of the mouth.

Human pulp response to resin cements used to bond inlay restorations.

Objective: The aim of this study was to evaluate the pulp response following cementation of inlays using two different resin cements.

Methods: Deep Class V cavities were prepared on the buccal surface of 34 sound human premolars. Impressions were taken and inlays were prepared which were cemented with the following luting materials-Group 1: Rely X Unicem (3M ESPE); Group 2: Variolink II (Ivoclar Vivadent).

In vitro cuspal deflection and microleakage of maxillary premolars restored with novel low-shrink dental composites.

Objectives: The development of novel low-shrink resin-based composites (RBCs) may offer a potential reduction in polymerisation shrinkage stresses generated at the tooth/restoration interface compared with current methacrylate RBCs. In vitro cuspal deflection and microleakage of meiso-occlusal-distal (MOD) cavities restored with experimental oxirane and silorane (EXL596 and H1) and methacrylate (Z100 and Filtek Z250) RBCs were assessed.

Methods: Standardised pre-molar MOD cavities were prepared (n = 10) and restored with each material.

Ethics of esthetic dentistry.

Patient demand for esthetics has increased globally, and often for reasons of patient self-esteem. However, important ethical issues encompass treatment for purely esthetic reasons. Also, perceptions of what is esthetic differ among patients and clinicians.

The reliability in flexural strength testing of a novel dental composite.

Objectives: To investigate the reliability of bi-axial flexure and three-point flexure testing of an experimental, low-shrink oxirane-based dental composite, EXL596 compared with two conventional methacrylate based restoratives, Z250 and Z100.

Methods: Specimens (n=20) of a novel oxirane-based composite and two commercially available methacrylate based composites were fabricated for flexural testing to evaluate mean bi-axial flexure strengths, three-point flexure strengths and the associated Weibull moduli (m) following 24 h immersion in a lightproof waterbath maintained at 37+/-1 degrees C.

Results: Mean bi-axial flexure strengths and the associated m of EXL596, Z250 and Z100 were 168+/-11 MPa (m=16.

Monomer conversion versus flexure strength of a novel dental composite.

Objectives: To quantify the monomer conversion and flexural strength of an experimental oxirane-based composite material (EXL596) compared with two, commercially available, dimethacrylate based restoratives (Z250 and Z100).

Methods: Fourier-transform infra-red spectroscopy (FTIR) was utilised to evaluate the degree of conversion (DC) (n=5) and biaxial flexure strength (BFS) testing (n=20) was used to analyse flexural strength and associated Weibull moduli (m) of each material following 0.1, 0.

Dentists' perceptions of trends in restorative dentistry in the UK.

Purpose Of Study: To obtain responses to a questionnaire on likely trends in the clinical practice of restorative dentistry from a national sample of general dental practitioners (GDPs) who were principals of group practices in the UK.

Basic Procedures: A panel of nine experts had been convened previously to define areas of trends in restorative dentistry in the UK and to formulate these into statements. Twenty trends were identified and framed into a 22-item questionnaire based on the trend statements.

Preformed metal crowns for primary and permanent molar teeth: review of the literature.

The aim of this study was to carry out a review of the use and efficiency of preformed metal crowns (PMCs) for primary and permanent molar teeth. A literature search of English language journals was carried out using MEDLINE. Papers that addressed areas related to the use of PMCs regarding indications for use, placement techniques, risks, longevity, cost effectiveness and utilization were included in the review.