. The science and practice of dental surgery. Fig. 232.—Inferior retrusion and secondary proclination of upper incisors in patientaged 3}5 years. Lower molars in post-normal occlusion (one unit). (G. : Denial Cosmos.) mandible and correction of occlusion were easilyeffected. Somewhat similar cases are recordedby C. R. Fitch (75) and G. Northcroft (121)(see Figs. 239, 240, 241, 230). Treatment.—It is diflBcult to lay down rules Fig. Ioriiait ..f L;isr ni Fig. 232. (DentalCof<inos.) be deferred until the tenth or twelfth years, aswas commonly the practice, and L. S. Lo

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. The science and practice of dental surgery. Fig. 232.—Inferior retrusion and secondary proclination of upper incisors in patientaged 3}5 years. Lower molars in post-normal occlusion (one unit). (G. : Denial Cosmos.) mandible and correction of occlusion were easilyeffected. Somewhat similar cases are recordedby C. R. Fitch (75) and G. Northcroft (121)(see Figs. 239, 240, 241, 230). Treatment.—It is diflBcult to lay down rules Fig. Ioriiait ..f L;isr ni Fig. 232. (DentalCof<inos.) be deferred until the tenth or twelfth years, aswas commonly the practice, and L. S. Lourie(109) produced convinc-ing examples of the ad-vantages of treatmentabout the sixth toeighth years. At thepresent time goodreasons are advancedfor treatment of thedeciduous dentition. As regards commenc-ing post-normal occlu-sion the first essential isthat growth should bestimulated by rationalmethods of feeding andliving, as without this nomechanical treatmentis likely to avail. Expansion of the arches,when necessary, can usually be

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19