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Posterior Bridge - Instruction videos

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Posterior Bridge

  • These instructions describe the indirect procedure on the model. You can also work chairside, but to achieve good results for posterior bridges we recommend preparing the bridge on the model.
  • 1) Clean and prepare the abutment teeth.
     
  • 2) Take an impression of the arch.
  • 3) Prepare the gypsum model of the arch from impression and isolate it. *
  • 4) Build the bottom part of the pontic from C&B composite. You can use a matrix or plastic foil to preserve the space for cleaning between the pontic and gingiva.
  • 5) Light cure the C&B composite according to the manufacturer’s instructions.
     
  • 6) Apply a thin layer of C&B composite along the bridgework area. DO NOT LIGHT CURE YET!
  • 7) Measure the length of the Dentapreg® strip.
  • 8) Remove the Dentapreg® PFU strip from the blister and cut it with scissors to the required length. Do not touch the unprotected strip with bare hands. The use of powder-free latex gloves is recommended. Store the remaining strip in the supplied light protection box and keep it in a dark place, preferably in a refrigerator. In this manner, you can store the strip for up to 4 weeks without its properties deteriorating significantly.
  • 9) Remove the protective paper and plastic foil from the strip. Insert it into the uncured composite and form it to the required position. You can use Dentapreg® Fork for easier adaptation.
  • 10) Light cure the strip for 40 seconds per tooth. You can use Dentapreg® Shield for protecting the rest of the strip during the light curing
  • 11) Build the pontic from C&B composite according to the composite manufacturer’s instructions. It is necessary to cover the whole surface of the fibers with composite! Build the dentine parts of the tooth with dentine shades of composite and form the enamel parts with enamel shades. Remember to keep the cleaning spaces free.
  • 12) Alternatively, you can place a sheet of Dentapreg® UFM* under the enamel layer of the pontic for additional reinforcement.

    It is necessary to place Dentapreg® UFM into the uncured layer of composite, adapt it on the pontic core and then light cure it for 40 sec. Cover the whole surface of the fibers with composite!
  • 13) Light cure the whole bridge according to the composite manufacturer’s instructions. You can also use the light-curing oven for final curing.
  • 14) Finish the bridge, adjust it in the occlusion and polish it.
  • 15) Sand blast the bonding areas of the bridgework, Al2O3 30μm is recommended. Aplly a silane and then bond on the bonding areas.
  • 16) Put the layer of composite cement on the bonding areas.
  • 17) Cement the bridgework according to the cement manufacturer’s instructions.
  • 18) Remove the excess cement.
     
     
     
  • 19) Finish the bridge and adjust the occlusion.


  • Note on Indirect Procedure:

    The above mentioned steps describe the chairside procedure. You can work indirectly on the model using the following procedure:

    Take an impression of the clinical situation using a silicone impression material and create a stone model. Isolate it. Prepare the bridge on this model. The procedure is the same as the chairside version. Once the bridge is ready, cement it to the prepared teeth using adhesive resin cement. Working on a model is more comfortable and easier than a chairside procedure and the final result will be more precise and esthetic.

    Recommendations:

    • We strongly recommend using powder-free latex or nitrile gloves when manipulating with the Dentapreg® strip.
    • The Dentapreg® strip must be entirely covered with composite. 
    • The optimal thickness of the veneering composite to be layered on top of the fibre frame at the occlusal contact is 2 mm.
    • Attach the Dentapreg® strip as incisally as possible. This allows maximum support for the bridge
      in the anterior region.
    • Bend the Dentapreg® strip as close as possible to the gingiva to maximize the reinforcing effect for the bridges in the posterior region.
    • We recommend using metal instruments as a pincer and a spatula.

    We recommend using C&B composite for Dentapreg® applications. For provisional or temporary applications you can use flowable composite.


Anatomical Post

  • The following instructions describe how to use Dentapreg® PFU as an anatomical post for crown retention after a root canal therapy. For small or medium sized root canals, we recommend using Dentapreg® PINPost.
  • 1) Remove the root canal filling material except for the last 3-5 mm of gutta-percha at the apex of the root.

  • 2) Rinse and dry the root canal. Isolate the working area from moisture. The use of a rubber dam is higly recommended.

     
    3) Measure the depth of the root canal using a gutta-percha pin or a periodontal probe. Keep in mind the height of the coronal part.

     

  • 4) Remove the Dentapreg® PFU strip from the blister and cut it with scissors to the required length. Do not touch the unprotected strip with bare hands. The use of powder-free latex or nitrile gloves is recommended. Store the remaining strip in the supplied light protection box and keep it in a dark place, preferably in a refrigerator. In this manner, you can store the strip for up to 4 weeks without its properties deteriorating significantly.
     
  • 5) Taper the end of the strip with sharp scissors for easier insertion into the root canal.

     

  • 6) Check the length of the post by inserting Dentapreg® PFU into the root canal. If necessary, shorten the coronal part of the post with scissors.

     


  • 7) Use a low viscosity dual-curing cement for cementing the post. Prepare the root canal according to the cement manufacturer’s instruction before cementation of the post. Fill the root canal with cement using an itraoral tip. Start the filling from the apex part and continue slowly upwards until you fill the whole canal. Do not use a Lentulo Spiral Filler - it accelerates the polymerisation and shortens the working time. Apply a thin layer of the cement on the Dentapreg® strip surface as well.
  • 8) Insert Dentapreg® PFU slowly into the root canal and remove the excess cement.

  • 9) Light cure the post and the cement for at least 40 seconds.
  • 10) Build the coronal part of the tooth from composite material using a preferred method. You can use the Dentapreg® UFM strip for reinforcing the composite crown. It is necessary to place Dentapreg® UFM into the uncured layer of composite, adapt it on the crowncore and then light cure it for 40 sec. Use the enamel shade of the composite for the final layer. Light cure it according to the composite manufacturer’s instructions. Adjust the occlusion and polish.


  • Note on Indirect Procedure:

    The above mentioned steps describe the chairside procedure. You can work indirectly on the model using the following procedure:

    Take an impression of the clinical situation using a silicone impression material and create a stone model. Isolate it. Prepare the bridge on this model. The procedure is the same as the chairside version. Once the bridge is ready, cement it to the prepared teeth using adhesive resin cement. Working on a model is more comfortable and easier than a chairside procedure and the final result will be more precise and esthetic.

    Recommendations:

    • We strongly recommend using powder-free latex or nitrile gloves when manipulating with the Dentapreg® strip.
    • The Dentapreg® strip must be entirely covered with composite. 
    • The optimal thickness of the veneering composite to be layered on top of the fibre frame at the occlusal contact is 2 mm.
    • Attach the Dentapreg® strip as incisally as possible. This allows maximum support for the bridge
      in the anterior region.
    • Bend the Dentapreg® strip as close as possible to the gingiva to maximize the reinforcing effect for the bridges in the posterior region.
    • We recommend using metal instruments as a pincer and a spatula.

    We recommend using C&B composite for Dentapreg® applications. For provisional or temporary applications you can use flowable composite.


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