A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . Notwithstanding the fact that this irregularity is the sole characteristic ofmany pronovmced dento-facial deformities, it nevertheless cannot be classified asbelonging to any particular one of the three dento-occlusal classes of malocclusionfor the reason that it arises in every character of disto-mesial occlusion of the buccalteeth, and consequently in every class. Fig. Unfortunately a few orthodontists in their writings have denominated thischaracter of malocclusion as c


A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . Notwithstanding the fact that this irregularity is the sole characteristic ofmany pronovmced dento-facial deformities, it nevertheless cannot be classified asbelonging to any particular one of the three dento-occlusal classes of malocclusionfor the reason that it arises in every character of disto-mesial occlusion of the buccalteeth, and consequently in every class. Fig. Unfortunately a few orthodontists in their writings have denominated thischaracter of malocclusion as cases of infra-occlusion; while others quite as earnestlybelieve that they are cases of supra-occlusion; whereas, the fact is, while some ofthe cases are due to an infra-occlusal position of the front teeth, and others are dueto a supra-occlusal position of the back teeth, the greater number are due to neitherone nor the other, but to a maldevelopment of the mandible in which the ramiand body of the mandible have assumed a more obtuse angle than is normal,and which consequently prevents the occlusion of the front teeth. In order to arrive at an appreciation of the causes of open-bite malocclusion,it would be well to remember that the terms supra and infra-occlusion, are CHAPTER XXVIII. TYPE G. DIVISIOX 1. CLA^S I. 229 merely relative terms, like distal and mesial, labial and lingual, etc., that areemployed to define malpositions or movements in relation to the normal or typicalstandar


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