The Journal of prosthetic dentistry
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Rheological tests of elastomeric impression materials during setting have been most often conducted at room temperature rather than at intraoral temperature. Because temperature may affect properties and the setting kinetics, clinically relevant inferences may not be accurate with studies conducted at room temperature. ⋯ The development of the viscoelastic rheological properties with time for 3 medium- and 4 low-viscosity impression materials at 33 degrees C showed significant differences in the setting time and the magnitude of the storage modulus. Compared with Impregum Penta, the new Impregum Penta Soft H was 6% less stiff when set, compared with 44% lower stiffness for the medium viscosity addition silicone. Temperature studies between 25 degrees C and 37 degrees C revealed strong temperature sensitivity of the kinetics of setting and evolution with time of their rheological properties.
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Comparative Study
Anatomic crown width/length ratios of unworn and worn maxillary teeth in white subjects.
Dimensions of teeth have been available for a century. Some significant and clinically relevant aspects of dental esthetics, however, such as the crown width/length ratios, have not been presented in tooth morphology sources until recently. ⋯ Along with other specific and objective parameters related to dental esthetics, average values for W (mesiodistal crown dimension), L (inciso-cervical crown dimension), and R (width/length ratio) given in this study for white subjects may serve as guidelines for treatment planning in restorative dentistry and periodontal surgery.
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Comparative Study
Contingent electrical lip stimulation for sleep bruxism: a pilot study.
No effective method has been found to fully control sleep bruxism, although contingent feedback methods show some promise. ⋯ The reductions in bruxism events were noteworthy, especially considering that stimulation was delivered for only half of the sleeping period.
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This article provides an extensive tutorial for writers and reviewers involved with the preparation and evaluation of manuscripts submitted for publication in dental journals. The contents were compiled from the Instructions for Authors printed in various peer-reviewed dental journals and from feedback from 10 workshops conducted for the Editorial Review Board of the Journal of Prosthetic Dentistry. ⋯ In addition, a number of special topics are addressed, including potential conflicts of interest for an author, institutional review of experiments that involve human subjects or animals, and the reproduction of photographs and other images in color versus black and white. In summary, this article presents key guidelines to ensure compliance with the principles of sound scientific writing and the expeditious review of manuscripts prepared for publication in peer-reviewed dental journals.
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Psychological and behavioral traits may be important for the diagnosis and management of orofacial pain. ⋯ Within the limitations of this study, patients diagnosed with myofascial pain and other joint conditions (group E) had significantly higher levels of depression (P=.03) and somatization (P=.03) than patients diagnosed with only disk displacements (group B).