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OBJECTIVE To evaluate the effect of rapid maxillary expansion on skeletal,dental,and nasal structures. METHODS 8 UCLP patients in the period of permanent teeth (mean: 14 years old) were treated with rapid maxillary expansion. Pretreatment and posttreatment postero-anterior cephalograms were taken to evaluate the changes of the indicators. The data were(More)
PURPOSE To evaluate the effect of casein phosphopeptide-amorphouscalcium phosphate (CPP-ACP) treatment on the shear bond strength of orthodontic brackets after tooth bleaching. METHODS One hundred extracted human premolars were randomly divided and treated according to 5 groups (n=20) : (1) no treatment; (2) 10% carbamide peroxide bleaching; (3) 38%(More)
OBJECTIVE To investigate the perception of Shanghai population with labial profile and evaluate its effect on orthodontic treatment. METHODS Four facial profiles with different labial convexity were drawn with computer aid on the basis of the pretty Chinese female cephalometric measurements. 650 panelists were selected from Shanghai area including 250(More)
OBJECTIVE The purpose of this cephalometric study was to compare the difference of NHP (natural head posture) and spinal position among malocclusions with different skeletal patterns. METHODS 79 malocclusions aged from 12 to 16 were divided to several groups according ANB and NSL-MP. The features of head posture and spinal position were examined by(More)
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