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Tooth wear clinical studies

In order to fully understand wear in the oral environment, in vivo clinical trials are required. These are necessarily complex studies, run over substantial periods of time to account for the fact that tooth wear is a rather slow process in all but the most extreme conditions. Additional confounding variables, such as diet, illness and environment, are difficult to avoid, which may reduce the power of any study to discriminate between test treatments. A further complication is the requirement to accurately measure minute changes in tooth surface profile on natural teeth. However, a number of studies have been reported and provide valuable information. [Pg.91]

A third possible approach to measuring tooth wear is to use an in situ study design. Here, volunteers wear test specimens that are either inserted into a denture or appliance, or attached directly to the teeth. Following the test phase, the test specimens are removed and the wear is assessed using laboratory procedures. An advantage of this approach is that the test specimens are exposed to the multiple interactions of the oral environment, but the sensitivity of laboratory analysis is maintained. This increased sensitivity allows for much shorter duration studies compared to a full in vivo clinical trial and it is, therefore, possible to apply some control to variables such as diet and volunteer illness, if required. [Pg.91]

Clinical studies of tooth wear are complex long-term studies for reasons already described. Some researchers have attempted to make objective measures of tooth wear, often using replicate techniques, whilst others have employed tooth wear indices. [Pg.93]

Wear characteristics are a particularly important property of dental materials, as these materials should not damage natural teeth. Some dental ceramics have been shown to be highly abrasive to antagonist natural tooth structure. Sorensen et al. (1999) examined this issue in the course of a six-month clinical study. Eight three-unit premolar bridges (of pressed glass-... [Pg.294]

West NX, Maxwell A, Hughes JA, Parker DM, Newcombe RG, Addy M A method to measure clinical erosion the effect of orange juice consumption on erosion of enamel. J Dent 1998 26 329-335. Cowell CR An appliance for the study of tooth tissue in vivo. Brit Dent J 1974 137 61-62. Cowell CR, Allen RWB A comparison of dentine wear on prepared tooth sections in vivo using two toothpastes. Brit Dent J 1979 146 339-342. [Pg.103]


See other pages where Tooth wear clinical studies is mentioned: [Pg.93]    [Pg.93]    [Pg.100]    [Pg.101]    [Pg.11]    [Pg.100]   
See also in sourсe #XX -- [ Pg.93 , Pg.94 ]




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