Adobe Systems Definujte zápatí – název prezentace nebo pracoviště 1 Preclinical dentistry I. Class I. modifications [USEMAP] Adobe Systems Modifications of the class I. ̶Composite ̶ ̶ ̶Inlay 2 Adobe Systems Preparation for composite The cavity is smaller – more narrow depending on the size of the carious lesion. The shape is a box with rounded edges. Undercuts are not prepared, the walls are smooth. In the case when the lesion is small the cavity could be limited on carious lesion only, fissures going to the lesion are opened and sealed. [USEMAP] lenka.roubalikova@tiscali.cz 4 malakavitaokluze Minicavities Opening of fissures oklplocha peceteni5 peceteni6 [USEMAP] lenka.roubalikova@tiscali.cz 5 obr Obbr7 obr7a [USEMAP] Adobe Systems Sequence of operation ̶Preparation ̶Acid etching (enamel 30 s, dentin 10 s) ̶Washing (10s at least,better as long as the etching lasted in enamel) ̶Removal of access of water ̶Application of the primer ̶Application of the bond ̶Layering of the composite material ̶Finishing and polishing 6 [USEMAP] The filling is built cusp by cusp [USEMAP] Adobe Systems Preparation for inlay ̶Inlay is a rigid filling ̶Made out of cavity (dental laboratory) and luted into the tooth ̶Preparation is different: box with walls that are slightly divergent ̶Preparation is slightly asymetric – orientation by application into the cavity is then easier [USEMAP] 1tridaschema [USEMAP] Adobe Systems Inlay ̶Can be made of metal alloy ̶or comopsit or ceramics inlayreciproke kotveni halasovasendvic [USEMAP] Adobe Systems Indication ̶Large defects that can not be restored with plastic fillings Definujte zápatí – název prezentace nebo pracoviště 11 [USEMAP] Adobe Systems Inlay - disadvantages 1.More hard dental tissues are lost 2.The fabrication is more difficult [USEMAP] Adobe Systems 1.Small and shallow cavities 2.High caries risk. 3.Frontal area Contraindication [USEMAP] Classification Inlay Onlay Overlay Inlay Onlay Overlay inlayschema onlayschema overlayschema [USEMAP] Adobe Systems Basic rules of the preparation ̶Box ̶No undercuts ̶ ̶Slight divergency of walls [USEMAP] 1tridaschema Usnadňující forma [USEMAP] Adobe Systems Metal inlay - fabrication ̶Direct method ̶ ̶ ̶Indirect method [USEMAP] Adobe Systems Direct method ̶Cenral cavities only ̶ ̶Wax pattern is made directly in oral cavity Adobe Systems Direct method 1.Phase in dental office Preparation ̶Isolation ̶Modellation ̶Sprue pin with the reservoir ̶Taking from the cavity Phase in ental lab ̶Investment ̶Casting - lost wax method ̶Finishing, polishing) 2. Phase in dental office ̶Trying ̶Luting [USEMAP] Adobe Systems Indirect method 1.Phase in dental office Preparation Taking impression – elastomeric materiál, antagonal impression – alginate, registration of intermaxillary relationships - wax Phase in dental lab Making the model –gypsum Modellation of the wax pattern Investment Casting - lost wax method Finishing, polishing) 2. Phase in dental office ̶Trying ̶Luting [USEMAP] Adobe Systems otiskovani1 otiskovani2 otisk Impression – elastomeric material ̶ [USEMAP] Adobe Systems medium Antagonal impression ̶ [USEMAP] Adobe Systems Registration of intermaxillary relationship - wax ̶ [USEMAP] Adobe Systems kavita na modelu lakovanipahylu cementspacer voskmodel Wax pattern on the model ̶ [USEMAP] Adobe Systems hotoveinlkov1 hotovrinkov2 Inlays made of metal alloy ̶ [USEMAP] Adobe Systems Cementation ØTrying, checkig ØPolishing of the borders using special instruments Ø ØCementation Ø [USEMAP] dosaznalest1 dosaznalest2 gumovani vruce dosazroztep dosaznalest3 [USEMAP] cementstet cementpritlac cementvasel skusdrevo cementdentnit [USEMAP] Adobe Systems Non metallic inlays nekovovainlay Composite Ceramics [USEMAP] inlayenamel8 [USEMAP] inlayenamel11 [USEMAP] Adobe Systems Non metallic inlays ̶Indirect method ̶Special procedures ̶Cemented using special composite materials – composite cements. These materials are usually dual curing. ̶This cementation is adhesive cementation: hard dental tissues sre etched, primed and bonded. Restoration are etched (hydrofluoric acid) or sandblasted, treated with silane afterwards (Silane helps to the retentnion) ̶ ̶ [USEMAP]