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 The use of kinematic face bow is contraindicated in the edentulous patients because: (MAN -98) a) It has to be used on the mandibular ridge b) Recording base may be unstable on the edentulous mandible c) Movement of bases may lead to inaccuracy in recording hinge axis d) All of the above Ans:(D) The fork of kinematic face bow is attached to mandibular rim, which is unstable and results in inaccuracy in recording the jaw relations. So kinematic face bow is usually used for fixed partial dentures. The arbitrary face bow (the fork is attached to maxillary rim) is the one most commonly used in complete denture patients. 

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