A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . l outlines, and leave the patient with a perfect inter-digitating occlusion. For practical treatment of this character, see Type C, Divi-sion 1, Class I. Fig. 130 is a good illustration of this type. It belongs to Class II, as one cansee by the mesial malinterdigitation of the upper buccal teeth. It is placed inClass I to draw a sharp comparison between cases in which locally caused malerup-tion of the upper cuspids arises with normal occlusion and with inherited upperprotrusion
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . l outlines, and leave the patient with a perfect inter-digitating occlusion. For practical treatment of this character, see Type C, Divi-sion 1, Class I. Fig. 130 is a good illustration of this type. It belongs to Class II, as one cansee by the mesial malinterdigitation of the upper buccal teeth. It is placed inClass I to draw a sharp comparison between cases in which locally caused malerup-tion of the upper cuspids arises with normal occlusion and with inherited upperprotrusions. The retruded position of the incisors entrapping the cuspids hasprevented the case from assuming a typical inherited protrusion, because it should CHAPTER XXII. DIVISION 1. CLASS I. 203 be remembered that whenever the results of a local cause arise in connection withan inherited Class II malocclusion of the buccal teeth, the treatment should alwaysbe regulated by the dento-facial character of its original inherited state, or thestate in which it would be if the front teeth were placed in alignment. Fig. Fourth: With the same dental character of malocclusion as in the above case,if there is a pronounced retrusion of the lower lip in relation to a normally posedchin, the placing of the upper teeth in alignment will produce little or no upperprotrusion, showing that the case belongs to Type A, Division 1 of Class II, whereits treatment will be found fully defined. On the other hand, if the lower lip is only moderately retruded in relation tothe chin, the placing of the upper teeth in alignment will produce a moderateupper protrusion, as in Type B of that Division. Commonly, the dentures can beshifted to a normal occlusion in these cases without producing a disharmonyto the dento-facial outlines. It should be borne in mind, however, that any exten-sive reducive movement of the entire upper denture, especially that of inheritedTypes, is very liable to be impossible to retai
Size: 2484px × 1006px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookidpracticaltre, bookyear1921
