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1、1．INTRODUCTIONBeauty1sdefinedas“Astateofharmonywhichconsistsofabalanceoffacialpr叩onlonswhichinturnenclosesabalancedrelationshipamongskeletalstructures．teethandsofttissue’，IlJorastherelativemeasureofbalanceandh鋤onv．12JAnlstoncalperspectiveofestheticsvalues
2、varyineachera．TheancientEgyptians(5000BC)werepossiblyamongthefirsttodealwithharmonious(attractive、proponlonsofthefaceandbody．TheEgyptianidealofbeautyandhanIlonyisretlectedmthemonumentsandsculpturesfromthattime(KingMycerinus，QueenNe鍘t1)·‘川InancientGreece，A
3、polloBelvedereandAphroditeofMelosrepresentedtheideaIfacialproportionsf引becausetheywereperceivedbythesculptorSmthefourthcenturyBC．Anglef引consideredthesebothgodsandthe1dealsoffacialbeauty·InfluencedbythethinkingofPythagoras，theconceptoftheso。caJled“golden”o
4、r‘‘divine”proportions(sectioning)developedint11efifnlandslxthcennuyBCandweredescribedforthefirsttimebyEuclidinhismookElementII·)例Ithasbeenseenthatthecomplexofbones，knoWnastheface，variesamongdlfferentindiVidualssinceeachpartshowsawiderallgeofvariationsover
5、time．Intheoverallschemeofthings，natureperhapsintendedthatsomede2reeofcompensa‘10n(skeletal，denmlorsofttissue)couldadjusttothisdifferentialgrowthpotentialbe鉚eenⅦriousanatomicstructures．Althoughallfacesarealikeandcanbeidentifiedashuman，yetalldifferandisvari
6、ableinitsamount，directionandtiming．Awell-balanceQandestheticallypleasingfacialappearancecombinedwithaproper，functlonalocclusionistheaimofoahodontictreatment．ConsensusiscomparativelyeasYtoachieveregardingtheocclusion．Onewayofexpressingthatconsensus1sl(1low
7、nasthe6keysforoptimalocclusion，proposedbyAndrews161However,it1SsomeIimeshardtodefinethetreatmentgoalbasedontheestheticp蛐l(wèi)ebecausenosinglekindoffaceisbelievedtobeattractive．Bearinginmindthat士aclala砒activenessisveryimportantininter．humancommullication。itwas
8、Ioundthatbeautymeanssocialpowerandsuccessandhasapositiveinfluenceinallareasofcivilizedsociety．17-Z31二二=二二蘭竺=∑——————————————————————～．!：!型!豎旦2旦竺!!竺翌——————————————————————一一J-l州JKUUUCJJoNAchlevlngawell-balancedandprop
