Inlayonlay

Zsuzsanna Tth D.M.D., Ph.D.Semmelweis University

Dept. of Conservative Dentistry

DEFINITION INLAY

Involves occlusal and proximal surface(s) of

a posterior tooth and may cap one or more,

but not all of the cups

ONLAY

Involves proximal surface(s) of a posterior

tooth and caps all of the cups

Inlay - onlayMetall

Ceramic

Glass ceramic

Direct Ceramic (Cerec)

Gold ceramic

Composite

Direct - Indirect

Metall (gold-, silver-palladium alloy)CompositeCeramic

Laboratorium - Chair-side Technik

Composite

CAD-CAM

Inlay - onlay

CAD/CAM:Computer Aided Design

Computer Aided Manufacturing

Inlay - onlay

Cavity preparation for cast metal inlays

Inlay - onlay

Higher strenght of a casting alloy is neededSuperior control of contours and contact is desiredWithstand occlusal loads placed on the restorationDistribute occlusal loads over the tooth decrease the

chance of tooth fractureConserve intact facial and lingual enamel conducive to

maintaining the health of contiguous soft tissues

INDICATIONS - CONTRAINDICATIONS I.

Higher strenght, superior contours, contact is desired (patients wish)Weakened teeth distribute occlusal loads

decrease the fractureExtensive proximal caries (subgingival margin)More different restorations and caries restore

all lesions with one castingRestore root canal filled teethFracture lines

Inlay - onlay

INDICATIONS - CONTRAINDICATIONS II.

Diastema closure, occlusal plane correctionRemovable prosthodontic abutment,

bridgesDental rehabilitation with cast metal alloyEconomics and patient appreciationAge of the patientEsthetics

Inlay - onlay

Cavity preparation for class II cast metal inlays

Convenience form Outline, retention and resistance forms

Occlusal step Enameloplasty Dovetail retention form Proximal boxing

Final cavity preparation Removal of carious dentin Preparation of bevels and flares

Cast metal restorations

Cast metal restorations

Thank you for your attention!

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