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Provisional crowns & methods

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First Year Dentistry Mind Map on Provisional crowns & methods, created by sanna pathy on 08/03/2020.
sanna pathy
Mind Map by sanna pathy, updated more than 1 year ago More Less
Zainab Patel
Created by Zainab Patel about 4 years ago
sanna pathy
Copied by sanna pathy about 4 years ago
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Resource summary

Provisional crowns & methods
  1. Matrix
    1. From pre-op
      1. Putty/alginate
        1. Material choices
          1. Acrylic
            1. Bosworth trim PMMA
              1. Hand mixed
                1. effort
                2. easier to add to
                  1. more flexible
                    1. High shrinkage
                    2. indications
                      1. Provisionals around partial dentures
                        1. Relining shell provisionals
                      2. Bis acryl composite
                        1. Quick temp
                          1. Adv
                            1. Quick set
                              1. Low exotherm & shrinkage
                                1. Easier to adjust occlusion compared to shells
                                2. Disadv
                                  1. Harder to add to
                                    1. Remember if there is a composite core then add vaseline before so it doesn't bond to it
                              2. Cementation materials
                                1. Zinc oxide
                                  1. Temp bond
                                    1. Non-eugenol for composite core
                                    2. Indications
                                      1. Resistance & retention form satisfactory
                                    3. polycarboxylate
                                      1. poly f
                                        1. Indications
                                          1. Resistance & retention form unsatisfactory
                                    4. From wax-up
                                      1. From intra-oral build up
                                      2. Why make them?
                                        1. Diagnostic
                                          1. Pulp prognosis
                                            1. Aesthetics
                                              1. Reorganising occlusion
                                              2. Aesthetics
                                                1. Prevent-over-eruption
                                                  1. Prevent tipping
                                                    1. Pulpal protection
                                                      1. Thermal
                                                        1. Bacterial
                                                        2. Gingival management
                                                          1. Maintain health
                                                            1. Prevent overgrowth
                                                          2. Shell
                                                            1. Lab made
                                                              1. acrylic
                                                                1. composite
                                                                  1. Reline with acrylic
                                                                  2. Pre-fabricated
                                                                    1. materials
                                                                      1. polycarbonate
                                                                        1. tooth coloured
                                                                        2. stainless steel
                                                                          1. Then take an imp of that and reline with bisacryl which is easier to adjust
                                                                          2. aluminium
                                                                            1. soft
                                                                              1. hard
                                                                            2. Reline with acrylic
                                                                          3. Freehand
                                                                            1. Veneers
                                                                              1. 1a) spot etch and bond
                                                                                1. Cure composite to prep
                                                                                2. Temporising unretentive preps
                                                                                  1. Options
                                                                                    1. No temporary
                                                                                      1. Spot etch
                                                                                        1. Zinc polycarboxylate &bisacryl
                                                                                          1. Cure the tooth to prep
                                                                                            1. Composite on opposing tooth to prevent over-eruption
                                                                                              1. Thin layer of zinc phosphate over dentine
                                                                                                1. Cure composite directly to tooth
                                                                                                  1. Shrink rap
                                                                                                2. E.g
                                                                                                  1. RBB
                                                                                                    1. Onlays
                                                                                                      1. Veneers
                                                                                                        1. Crowns
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