ortho - the international C.E. magazine of orthodontics

ortho1_201330 I I technique_ appliances After six months of wearing the Penguin Appli- ance, please note that the relationship of the molars has changed from an end-on molar relationship to a solid, if not slightly overcorrected, Class I molar relationship. There has been a significant amount of space created by the distalization of the maxillary molarsthatwillallowforthecorrectionofthemaxil- lary crowding problem. Also, note that the maxillary incisors and the overjet and overbite relationship have not changed (Fig. 12). The case is now bonded and a Nance Appliance placed so as to maintain the position of the distal- ized molars and maintain maxillary anchorage. The .022 x .028 slot In-Ovation R-brackets have been bonded, themolarsbanded, andplease notethatthe .014 Sentalloy® archwires stop at the first molars to prevent these flexible wires from coming out of the mandibular second molar tubes (Figs. 13–16). After just four months, please notice how much tooth alignment has been achieved and how much space has closed due to the ability of the .014 arch- wire to freely slide in an almost frictionless manner. The bicuspids and canines have distalized and the maxillary anterior teeth have aligned without the upperincisorsprotruding.Thealignmentofthelower anterior teeth has improved significantly and at this appointment, a second .014 Sentalloy archwire is placed to eliminate the remaining rotations in the mandibular arch (Figs. 17–26) Figs. 17–26_Four months of treatment with .014 Sentalloy archwire. Fig. 17 Fig. 18` Fig. 20 Fig. 19 Fig. 21 Fig. 23 Fig. 22 Fig. 24 Fig. 25 Fig. 26