Temporomandibular joint disorders as the only manifestation of juvenile idiopathic arthritis: a case report.

Juvenile idiopathic arthritis is a term used to include all chronic childhood arthritis of unknown etiology. It is characterized by chronic inflammation persisting for at least 6 weeks, beginning before 16 years of age. The characteristics present are chronic synovitis, arthralgia, impaired joint mobility in at least one joint, and erosion with destruction of cartilage and subchondral bone, that could be associated or not with systemic involvement, according to each subtype of the disease.

Effect of sealant application and thermal cycling on bond strength of tissue conditioners to acrylic resin.

The aim of this study was to evaluate the effect of sealer application and thermal cycling on the bond strength between tissue conditioners and acrylic resin, and to observe the type of bond failure. Two hundred eighty-eight specimens (10x16x3 mm) were made of an acrylic resin (Lucitone 500, Dentsply) using a metal muffle. Specimens were divided into four groups according to the tissue conditioner (Coe-Comfort, GC or Dentusoft, Densell) used and whether or not a sealer (Eversoft Soft Liner Sealer, Myerson) was applied.

Effect of gender, experience, and value on color perception.

Statement Of The Problem: Precise shade matching can be one of the most difficult tasks for the dentist and some variables may influence the process of shade comparison.

Purpose Of The Study: This study tested the differences in shade perception between genders, the influence of the observer's clinical experience, and the value of ceramics in correct shade selection.

Material And Methods: A total of 45 women and 54 men compared 16 pairs of ceramic disks according to shades.

Evaluation of varying amounts of thermal cycling on bond strength and permanent deformation of two resilient denture liners.

Statement Of Problem: Two problems found in prostheses with resilient liners are bond failure to the acrylic resin base and increased permanent deformation due to material aging.

Purpose: This in vitro study evaluated the effect of varying amounts of thermal cycling on bond strength and permanent deformation of 2 resilient denture liners bonded to an acrylic resin base.

Material And Methods: Plasticized acrylic resin (PermaSoft) or silicone (Softliner) resilient lining materials were processed to a heat-polymerized acrylic resin (QC-20).

Effect of thermocycling on bond strength and elasticity of 4 long-term soft denture liners.

Statement Of Problem: Two problems found in prostheses with soft liners are bond failure to the acrylic resin base and loss of elasticity due to material aging.

Purpose: This in vitro study evaluated the effect of thermocycling on the bond strength and elasticity of 4 long-term soft denture liners to acrylic resin bases.

Material And Methods: Four soft lining materials (Molloplast-B, Flexor, Permasoft, and Pro Tech) and 2 acrylic resins (Classico and Lucitone 199) were processed for testing according to manufacturers' instructions.