. The science and practice of dental surgery. clude. Note the diminished depth of the dento-facial area after treatment. and lower teeth in occlusion,and the occlusal view of theupper teeth, before treat-ment. Fig. 368 shows thesame views six years aftertreatment. In both illus-trations the same model ofthe lower jaw is used. Itwill be noticed that the upperincisors have moved lingu-ally, through lip pressure,and the absence of anycounteracting resistance tothis, tiie result of the spacebehind the erupting is highly probable thatliad the upper molar seriesbeen to move back the
. The science and practice of dental surgery. clude. Note the diminished depth of the dento-facial area after treatment. and lower teeth in occlusion,and the occlusal view of theupper teeth, before treat-ment. Fig. 368 shows thesame views six years aftertreatment. In both illus-trations the same model ofthe lower jaw is used. Itwill be noticed that the upperincisors have moved lingu-ally, through lip pressure,and the absence of anycounteracting resistance tothis, tiie result of the spacebehind the erupting is highly probable thatliad the upper molar seriesbeen to move back theincisors, the former teethwould, to some extent, in allprobability have moved for-ward, a nn)vement whichmust be avoided in all casesof this nature. Case 4. (Geo. XoRTHCROFT.) Fig. 369 sho\\s the casewhen the patient was tenyears old. The lower jaw isseen to be in jjost-normalrelation with tiie upper. Theupper dental arch is toonarrow, and the incisorshave the appearance of protruding, though, asis so frequently the case in irregularities of. Fio. 374.—Case li. lietoiv of upper incisors (Ungual occkision) and secondary inferiorprotrusion. gives an excellent occlusion of tlie lower teeth,and entirely avoids mechanical treatment. Tliis 244 this type, it is not so, or only very slightly;the effect bein produced by the pnst-normal
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
