The power of communication has given the human beings the ability to process the gathered information and use it for his own advantage. The older methods of conveying his messages through vocal sounds, have now advanced into a meaningful speech which is a biologic function of the maxillofacial structures. Besides all the other functions of the oral cavity like deglutition, mastication and patency of airway, which are common to all the species, speech has enabled man to reach the pinnacle of animal kingdom which makes him superior and different from the others. Speech as basic and fundamental means of communication has become the corner stone for