I recently had veneers put on my teeth. A bridge was replaced on the lower back molars but instead of the bridge fitting over three teeth it now includes a fourth tooth. Why is it necessary to include a fourth tooth. thanks

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  • Dr.Ritz

    Dr.Ritz 22 - August - 2011, at 11:03 AM

  • Normally when the bridge is placed, if single tooth is missing then support is taken from two adjacent teeth, one front of lost tooth and one from back. These supporting teeth are called abutment teeth and it is normally a 3 unit bridge. But if the abutment teeth are not strong enough or the tooth structure is less in them and the dentist feels that they will not be able to give adequate support then one more tooth is used as abutment tooth so as to give support to the bridge. In that case it comes 4 unit bridge. For more info on bridges you can read this article..... http://www.identalhub.com/article_how-do-bridges-work-225.aspx

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