1 Aesthetics is a science about beauty. Iti is connected with sensual perception. Rules are changing during the time a there are differences in various regions. . 2 hom1 ??? ??? svetlana 3 bohyne chram 4 „Penta en arithmo“ (Pythagoras) 1/1,618 = 0,618 Golden cut hefaistuvchram socha 5 Perception of the object nComposition nSingle items nHarmony nSymetry nDominanca nLines budha Dentofacial harmony nImaginary lines – stuctures must have harmonious relation to them n nTeeth are in harmony with the face, they can attract our attention and distract it form other structures 6 7 obr Horizontal a vertical lines axis Profile: 8 Balance of lip, nose and chip. Nasolabial angle: 90° – 95 °men 100° - 106° women Rickets line: 4 mm before upper 2 mm before lower lip Line of smile nConnects incisal edges of upper frontal teeth and touches cusos of upper molars. Lower border is lower lip. Line of lower lip is parallel to line of smile. nUpper central incisors should be in touch with wett part of upper lip. 9 Line of smile lroubalikova@gmail.com 10 Bilateral negative space Normal Enlarged brezina1 brezina3 lenka.roubalikova@tiscali.cz 12 n cisconova ciscionova01 cisconova04 cisconova kontrola Dentál harmony 13 Inclination of long axis Slight mesial inclination of long axis Slight inclination vestibulary Position of contact points: They become smaller and move apically (50:40:30) Their elongation can optically widen teeth Dental harmony 14 Interincisal spaces become smaller in distal direction They become smaller in younger individuals 15 Relation between width and height n tvarzubu1 With of upper central incisor is 70 – 80% its height 16 Optical width n tvarzubu3 Golden cut nwidth length n = 0,618 nlength width+length n 17 18 Kopie hromkova1 Kopie hromkova2 Kopie hromkova3 hromkova5 Roubalíková L. Méně obvyklý případ řešení obráceného skusu. Prakt zub Lék;48: 117-120. Shape of crown principally corresponds to shape of the face 19 n nShape of the face: n angular, oval a triangular nCorresponding shapes of teeth 20 Front Zygomatic line Mandibular line 21 hromkova1 hromkova2 Harmony Curvature of the labial surface – for reflection of the light 22 n C:\WINDOWS\Desktop\CD_2003\manuale2003\51.jpg C:\WINDOWS\Desktop\CD_2003\manuale2003\51.jpg Reflexe světla 23 Surface texture n 24 n n n n optikazubu Harmony 25 n n optikazubu mlcuchovavych mlcuchovaobnoveniharmonie 26 Basic terms -optic n 27 cervanky1 We can recognise depht of the colour because of dispersion of ligth inside the air and water 28 vlny 29 Světlo nElektromagnetic undulation n -Wave length -Amplitude -Quantum - Ray - reflection - deflection Various velocity of the light in various environment Relation of these velocities in twpo various environments is index of refraction 30 tantachromavalore chroma value hue 3 Variables of colour Chroma – colour. Result of wavelength Hue – result of amplitude Value - cleanliness 31 obr 32 Transparency Translucency Opacita Opacity 33 30405_IT 11 Enamel is translucent 1 2 3 34 fluorescence Úzký svislý The light is absosbed and irradiated back in very short time 10-12 s. Special, „live“ appearance od dentin 35 mlady Opalescence Special effect on incisal edge Result of translucency of enamel 36 optikazubu Mamelony Opalescence Halo efekt 37 n DSC_0036 38 Kopie nový-1 mlady Úzký svislý 39 Kopie nový-1 sdtrednivek Úzký svislý 40 Kopie nový-1 stary Úzký svislý 41 Optical reading of the crown 42 optikazubu colour Desaturation Opalescency Tvar mamelons Halo efekt Spots, special chracterizations 43 Chromatic scala of composite materials nDentin shades n nEnamel shades n nSpecial effects n n 44 vzornik koncepcevrstv 45 Immagine01 mod rit2 46 artemis3 artemis2 artemis1 vrstveni1 vrstveni2 002 009 nShape nStratification nSurface texture nPolishing 50