ridge lap


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ridge lap

the part of an artificial tooth that is adjacent to or approximates the residual ridge. Proper ridge lap can give the appearance of a natural tooth.
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Mechanical modification of ridge lap area of denture teeth, chemical modification of ridge lap area of denture teeth, type of acrylic resin denture base used, type of acrylic teeth used and presence of any residues on the ridge lap surface are the factors which effect bond between acrylic teeth and denture base which should be avoided to prevent the disappointment to the patient which may result due to failure of denture.
Group 3 Vertical grooves 2mm deep and 2mm wide cut into the ridge lap surfaces of teeth with a cylindrical fissure bur.
Group 4 Ridge lap surfaces prepared for a diatoric, 2mm deep and 3mm wide, drilled on the palatal surfaces of teeth.
Group 5 Ridge lap surfaces sand blasted with 250mi cron grit in sand blasting machine.