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• Disadvantages : Although this procedure<br />
results in abase that is more rigid and<br />
stable than shellac but its still subject to<br />
distortion and breakage. It is bulky, the<br />
odor and taste of the paste are<br />
objectionable to some patients, and it is<br />
unsuitable for arrangement of teeth in<br />
cases of limited inter arch space.
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