A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . fully closed aspossible. Fig. 153 shows on the right a commonresult after treatment. Occasionally, the condition obtains far moreupon one side than upon the other. Usually,however, the space between the upper and lowerteeth quite uniformly increases from the point ofocclusion toward the front, just as if the mandiblehad been bent downward or straightened at theangles of the rami. In fact, in pronoimced cases227 228 PART VI. DENTO-FACIAL MALOCCLUSIONS where only two or more molar
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . fully closed aspossible. Fig. 153 shows on the right a commonresult after treatment. Occasionally, the condition obtains far moreupon one side than upon the other. Usually,however, the space between the upper and lowerteeth quite uniformly increases from the point ofocclusion toward the front, just as if the mandiblehad been bent downward or straightened at theangles of the rami. In fact, in pronoimced cases227 228 PART VI. DENTO-FACIAL MALOCCLUSIONS where only two or more molars on each side occlude, the back ones will at timesseem to have been driven into their sockets through the force of mastication, orprevented from growing to their full height, so that the tuberosities come intoclose proximity to the angles of the rami when the jaws are closed. The author has met with a number of cases, however, older than twenty-fiveyears of age, where the entire forces of mastication had been sustained from child-hood by single molars on each side, with no apparent intrusive movement. Fig 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. 153.
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