Internal Prosthetic Manual - BioHorizons
Internal Prosthetic Manual - BioHorizons
Internal Prosthetic Manual - BioHorizons
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MULTIPLE-UNIT CEMENT-RETAINEDLab 4 - Abutment modificationReplace the modified abutments and screws on the mounted workingcast and make final adjustments. A diamond bur may be used to definethe margins.IMPORTANTWhen preparing a margin on an abutment for cement retention it is important to respect the soft tissue contours rather thanthe pre-defined margin of the abutment. In some cases the pre-defined margin on the abutment will be too far below the softtissue to allow easy seating of the crown and removal of excess cement from the sulcus. In these instances the abutment must bemodified so that the margin is 0.5mm to 1mm subgingival in the esthetic zone and at the level of the gingiva in non-esthetic areas.Below are three examples of margin placement on a 4.5mm platform 3inOne Abutment.65shop online at www.biohorizons.com