Shlinberg Casts and Die 87953473

Embed Size (px)

Citation preview

  • 7/31/2019 Shlinberg Casts and Die 87953473

    1/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    2/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    3/54

    WORKINGCAST

    is the cast that is

    mounted on an

    articulator. To provide

    the most accurate

    articulation, itnormally should

    represent the entire

    arch

  • 7/31/2019 Shlinberg Casts and Die 87953473

    4/54

    REQUIREMENTSFORGOODCASTS

    1. bubble free

    especially along the finish lines of the prepared

    teeth.

    2. distortion free.3. trimmed

    to insure access for carving wax pattern

    margins.

  • 7/31/2019 Shlinberg Casts and Die 87953473

    5/54

    WORKING CAST WITHA

    SEPARATE DIE

  • 7/31/2019 Shlinberg Casts and Die 87953473

    6/54

    WORKING CAST WITHASEPARATE DIE

    disadvantages

    wax pattern must be transferred from one to the

    other

    internal adaptation

    obtained from

    separate impressions

    pouring an elastomeric full-arch impression twice

    first cast is used for fabrication of the die

  • 7/31/2019 Shlinberg Casts and Die 87953473

    7/54

    IMPRESSION POURING

  • 7/31/2019 Shlinberg Casts and Die 87953473

    8/54

    DIE PREPARATION

    Stone is added Tray is tilted

  • 7/31/2019 Shlinberg Casts and Die 87953473

    9/54

    DIE PREPARATION

    Stone is added to theimpression

    The die is first trimmed ona model trimmer

  • 7/31/2019 Shlinberg Casts and Die 87953473

    10/54

    DIE PREPARATION

    handle is slightly largerthan preparation. Improperly trimmed die

  • 7/31/2019 Shlinberg Casts and Die 87953473

    11/54

    DIE PREPARATION

    The handle should be 1inch long

    The die is trimmed with anacrylic bur.

  • 7/31/2019 Shlinberg Casts and Die 87953473

    12/54

    DIE PREPARATION

    Shaping near the finishline with a scalpel

    The die is with the discoidend of a Tanner carver

  • 7/31/2019 Shlinberg Casts and Die 87953473

    13/54

    ERROR !!!

    This die is too short, and it does notallow adequate access for marginfinishing.

  • 7/31/2019 Shlinberg Casts and Die 87953473

    14/54

    DIECONTOURSSHOULDBESIMILARTO

    THOSEOFANATURALTOOTH

  • 7/31/2019 Shlinberg Casts and Die 87953473

    15/54

    DIE PREPARATIONAxial contours of the wax

    pattern are influenced bydie trimming.

    finish line on die outlined

    with a red pencil.

  • 7/31/2019 Shlinberg Casts and Die 87953473

    16/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    17/54

    WORKING CAST WITHA

    REMOVABLE DIE

  • 7/31/2019 Shlinberg Casts and Die 87953473

    18/54

    IFAREMOVABLEDIESYSTEMISUSED, IT

    SHOULDSATISFYTHESEREQUIREMENTS17

    The dies must return to their exact original

    positions.

    2. The dies must remain stable, even when

    inverted.

    3. The cast containing the dies must be easy to

    mount on an articulator

  • 7/31/2019 Shlinberg Casts and Die 87953473

    19/54

    WORKING CAST WITHA REMOVABLE DIE

    Most of these devices

    can either be oriented

    in the impressionbefore it is poured

    attached to the

    underside of a cast

    that has already beenpoured

    prepour technique post-pour technique

  • 7/31/2019 Shlinberg Casts and Die 87953473

    20/54

    WORKING CAST WITHA REMOVABLE DIE

    1. Straight dowel pin

    2. Curved dowel pin

    3. Pindex system

    4. Di-Lok tray 5. Accutrac

  • 7/31/2019 Shlinberg Casts and Die 87953473

    21/54

    TYPES

    OFANTIR

    OTATIONALDEVICE

    S

    USEDFORR

    EMOVABL

    EDIES

    A, flat-sidedsingledowel;

    B, single

    curveddowel;

    C, doublestraightdowels witha common

    head;

    D, twoseparateparalleldowels;

    E, keyedplastic outertray

  • 7/31/2019 Shlinberg Casts and Die 87953473

    22/54

    STRAIGHT DOWEL PIN

    Dowel pins positioned

    over the impression

    Paper clips are added to

    nonremovable parts

  • 7/31/2019 Shlinberg Casts and Die 87953473

    23/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    24/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    25/54

    the ends of the dowel

    pins are tapped to loosen

    Base of die is trimmed

    with an acrylic bur.

  • 7/31/2019 Shlinberg Casts and Die 87953473

    26/54

    Dies are reseated into the

    cast

    wax is removed from the

    ends of the dowel pins.

  • 7/31/2019 Shlinberg Casts and Die 87953473

    27/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    28/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    29/54

    CURVED DOWEL PIN

  • 7/31/2019 Shlinberg Casts and Die 87953473

    30/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    31/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    32/54

    CURVED DOWEL PIN

    The completed cast issawed

    Segment is removed bypressing on the exposed tip

  • 7/31/2019 Shlinberg Casts and Die 87953473

    33/54

    CEMENTED CURVEDPIN

  • 7/31/2019 Shlinberg Casts and Die 87953473

    34/54

    CEMENTED CURVEDPIN

    The working cast is trimmedto receive cemented dowels

    Holes are drilled into the underside ofthe cast, under the indicated locations

  • 7/31/2019 Shlinberg Casts and Die 87953473

    35/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    36/54

    CEMENTED CURVEDPIN

    The head of a curveddowel is seated

    saw cuts after the base ispoured

  • 7/31/2019 Shlinberg Casts and Die 87953473

    37/54

    PINDEXSYSTEM

  • 7/31/2019 Shlinberg Casts and Die 87953473

    38/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    39/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    40/54

    PINDEXSYSTEM

    The cast should be 15 mmthick

    The periphery of the castis trimmed

  • 7/31/2019 Shlinberg Casts and Die 87953473

    41/54

    PINDEXSYSTEM

    The palate/tongue areais trimmed

    Location of the pin holesis marked with a pencil

  • 7/31/2019 Shlinberg Casts and Die 87953473

    42/54

    PINDEXSYSTEM

    Pencil marks are placedunder illuminated dot

    The thumbs are used to

    stabilize the cast whilelifting the handle bar

    with the fingers.

  • 7/31/2019 Shlinberg Casts and Die 87953473

    43/54

    PINDEXSYSTEM

    Debris is removed pin holes refined

    Shorter pins 1st Cyanoacrylate cement

  • 7/31/2019 Shlinberg Casts and Die 87953473

    44/54

    PINDEXSYSTEM

    White sleeves > long pins bottom of cast is lubricated

    Utility wax > long pins. gray sleeves are blocked

  • 7/31/2019 Shlinberg Casts and Die 87953473

    45/54

    PINDEXSYSTEM

    A palatal/tongue filler The filler is placed on thecast

    Boxing wax The filler is seated to the

    cast

  • 7/31/2019 Shlinberg Casts and Die 87953473

    46/54

    PINDEXSYSTEM

    Microstone is poured The base former filled

    Model seated to base former Stone is vibrated on bottom

  • 7/31/2019 Shlinberg Casts and Die 87953473

    47/54

    PINDEXSYSTEM

    Wax over the long pins isremoved.

    The saw cuts are premarked

    Dies are sectioned from the

    underside

    The cast is removed by tapping

    the pins

  • 7/31/2019 Shlinberg Casts and Die 87953473

    48/54

    PINDEXSYSTEM

    Dies may also sectioned from

    the occlusal

    A large condenser also be

    used to loosen

    cast should be poured in a U

    shape, no stone in the center.The completed cast on the

    articulator

  • 7/31/2019 Shlinberg Casts and Die 87953473

    49/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    50/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    51/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    52/54

    DI-LOKTRAY

    The prepared tooth is broken

    free from the cast

    die is trimmed

    The cast and tray mounted on

    the articulator

    The cast and die(s) are

    reassembled in the tray

  • 7/31/2019 Shlinberg Casts and Die 87953473

    53/54

  • 7/31/2019 Shlinberg Casts and Die 87953473

    54/54