![]() “It’s a matter of preference for most clinicians.”Ĭharacteristics of Impression Materials Comparing the attributes of materials is helpful when choosing one for a given case. “There are so many great impression materials,” Dr. And honestly, clinically, materials have gotten so good that there is not much difference.”Įach type has its pros and cons - situations where the material provides excellent performance and others that leave less than optimal results. ![]() “Clinicians fall into either camp: They are either a VPS clinician or a polyether clinician. “Most of the impression materials in use today are VPS or polyethers,” says Sam Simos, DDS, a dentist in private practice in Ottawa, Illinois, and a national lecturer in cosmetic and restorative dentistry. The most recent addition, which joined the group about 10 years ago, is vinyl polyether siloxane (VPES), a hybrid of PE and VPS that exhibits qualities of each. The most common types have been used since the middle of the 20th century and include alginates, polyethers (PEs) and vinyl polysiloxane (VPS). Today’s market contains a plethora of choices of impression materials. Moreover, the materials should remain dimensionally stable so the technician can pour multiple casts. Lab technicians expect it to retain dimensional accuracy when disinfected. Provides a decent patient experience regarding taste and set time while a patient holds it in their mouth (and fights their gag reflex).ĭental labs have high expectations of impression materials, too.Has an inexpensive price point per use.Retains a consistency that resists tearing when removed but doesn’t cause the patient discomfort during the process. ![]()
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