TOOLS, ATTACHMENTS AND SUPPLIES FOR DENTISTS AND DENTAL LABORATORIES-NAMELY, ATTACHMENT FOR PARTIAL DENTURES; ELECTRIC SAWS AND BLADES THEREFOR; COMPONENTS FOR A NON-PARALLEL, HORIZONTAL, PIN SPLINTING TECHNIQUE FOR SPLINTING TEETH, COMPRISING POSITIONING PINS, SOCKET WRENCHES, ACRYLIC HEAD SCREWS, INTERNALLY THREADED SLEEVES WITH POSITIONING PINS, TEMPERED STEEL THREADED SCREWS AND POSITIONING PINS FOR POURING MASTER CAST; A SELF-THREADING SCREW WITH A LATCHING WRENCH TO BE THREADED INTO A DENTAL STRUCTURE (DENTIN) FOR SUPPORT FOR BROKEN OF UNDERMINED TEETH; DIE STEMS; WAX COMPOUND; DIE RELEASE COMPOUND; DOWELS FOR DENTURE DIES; PUNCH FOR SEPARATING AND REMOVING DIES FROM MODELS; AND ULTRASONIC CLEANING UNIT, COMPRISING AN ELECTRONIC ULTRASONIC GENERATOR AND TRANSDUCER COUPLED TO A TANK UNIT WITHIN WHICH OBJECTS TO BE CLEANED ARE IMMERSED AND A CLEANING CONCENTRATE USED THEREWITH