- Clinical steps:
• Special tray made with wax spacer and stoppers for 2ry impression registration by rubber base.
• Even thickness spacer and stoppers will grantee: Even thickness of impression material (even dimensional changes), Selective equal pressure during impression registration & Prevent pressure areas in the impression.
• Relief for sensitive and prominent areas like Incisive papilla, Median palatine raphe & Rugae area made by adding wax or foil to the cast.
• Relief wax may be left in the tray until finishing the border molding to grantee the proper centralization of the special tray during molding procedure.
• Special tray should be examined before insertion into the patient mouth.
• Sharp and irregular borders should be corrected before try in of the special tray in patient mouth.
• Borders made 2 mm short from full depth of vestibule to provide sufficient space for the border molding material.
• Using low speed straight hand piece and carbide finishing bur to smooth all sharp, irregular or overextended borders and to prevent irritation of patient vestibular mucosa during impression making.
• Open the v-shaped frenal notch properly to protect the frenum from injury & prevent it from displacing the denture during lip and cheek movement.
• Examine the special tray in the patient mouth & check the proper extension of the flange borders.
• The tray borders should be extended properly to allow proper registration of the denture borders in length and width.
• If the tray is perfectly adapted and extended it may give suction before border molding and impression registration.
#step_by_step_complete_denture_making
17 сен 2024
