Dental impression materials are used to record oral anatomy for the fabrication of fixed restorations and removable prosthodontics and appliances. The accuracy of these restorations depends on proper tooth preparation, the impression material, the technique used, and excellent communication with the dental laboratory. Elastomeric impression materials, addition silicone (PVS) and polyether, are popular because of their excellent physical and mechanical properties, including excellent detail reproduction, high elastic recovery and good

Orthodontists have been straightening teeth for decades, relying on the ancient physics principle “every action has a reaction,” in which tooth displacement in one part of the jaw causes movement on the other as well. Use of dental implants as orthodontic anchors, however, is changing that principle by expediting treatment times and expanding possibilities for previously untreatable cases, according to research presented at the 2008 American Academy of Implant Dentistry

A University of South Carolina study of children’s dental health has found that nearly one-fourth of the nation’s children have had no dental care in at least a year. Conducted by researchers at the South Carolina Rural Health Research Center, the study found that nearly 32% of Hispanic children in rural areas had no dental care in the past year and 26% of rural black children had no dental care,

Brittle bones, kidney stones, thyroid disease — even an asthmatic’s wheeze: fluoride gets blamed for a lot of health problems. Noting such concerns, oral health agencies in several countries are recommending that fluoride supplements be given only to children at highest risk of caries, or to no one at all. Now the ADA is mulling such a similar shift in its own guidelines. The chair of a working group for