Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Linear dimensional changes in elastic impression materials.

C F Marcinak, F A Young, R A Draughn

    Journal of Dental Research
    |July 1, 1980
    PubMed
    Summary

    Dimensional stability varies significantly among elastomeric impression materials. Polysulfide materials generally expanded, while silicones and polyethers showed shrinkage, with reversible hydrocolloids exhibiting initial expansion followed by rapid shrinkage over time.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    A study of porcelain surfaces as utilized in fixed prosthodontics.

    The Journal of prosthetic dentistry·2012
    Same author

    Direct Measurement of Venous Pressure in Man.

    Canadian Medical Association journal·2010
    Same author

    Comparison of cutting rates among single-patient-use and multiple-patient-use diamond burs.

    Journal of prosthodontics : official journal of the American College of Prosthodontists·2000
    Same author

    Design of prosthetic cantilever bridgework supported by osseointegrated implants using the finite element method.

    Dental materials : official publication of the Academy of Dental Materials·1999
    Same author

    Fixation of osteotomies using bioabsorbable screws in the canine femur.

    Clinical orthopaedics and related research·1999
    Same author

    Bone ingrowth to implant surfaces in an inflammatory arthritis model.

    Journal of orthopaedic research : official publication of the Orthopaedic Research Society·1998

    Area of Science:

    • Dental Materials Science
    • Polymer Chemistry
    • Biomaterials Engineering

    Background:

    • Accurate dental impressions are crucial for fabricating prosthetics and restorations.
    • Dimensional stability of elastomeric impression materials is a key factor influencing clinical success.
    • Variability in material properties necessitates comparative studies on their long-term accuracy.

    Purpose of the Study:

    • To evaluate the linear dimensional stability of four classes of elastomeric impression materials.
    • To assess the impact of impression storage time on dimensional accuracy.
    • To compare the behavior of polysulfide, polyether, silicone, and reversible hydrocolloid materials.

    Main Methods:

    • Four classes of elastomeric impression materials were tested: polysulfide, polyether, silicone, and agar-agar (reversible hydrocolloid).

    Related Experiment Videos

  • Linear dimensional stability was measured as a function of time between impression taking and pouring.
  • Dies were fabricated from impressions of mounted teeth to assess dimensional changes.

    • Main Results:

    • Polysulfide materials consistently produced larger dies, with size increasing over impression storage time.
    • Silicone materials exhibited varied results, with one showing slight shrinkage and another significant shrinkage with increased storage time.
    • Polyether materials initially produced slightly smaller dies, which then increased in size up to 24 hours.
    • Reversible hydrocolloid showed initial die enlargement followed by rapid shrinkage at longer storage times.

    Conclusions:

    • Elastomeric impression materials demonstrate diverse dimensional stability profiles.
    • Storage time significantly affects the accuracy of dies produced from different impression materials.
    • Material selection and timely pouring are critical for achieving accurate dental restorations.