PROVISIONAL

RESTORATIONS
INDIAN DENTAL ACADEMY
Leader in continuing dental education
www.indiandentalacademy.com
www.indi...
A

fixed or removable
prostheses designed to
enhance esthetics,
stabilization and /or function
for a limited period of ti...
FUNCTIONS
B OGICAL
IOL

M CH
E ANICAL

E HT
ST E IC

www.indiandentalacademy.com

3
BIOLOGICAL
Pulpal

protection.
Maintain periodontal health.
Provide occlusal
compatibility.
Maintain tooth position.
...
Pulpal protection
The restoration must

be fabricated of a
material that will
prevent.
•Conduction of
extreme temperatures...
Periodontal Health

•Extent of margins.
•Contour.
www.indiandentalacademy.com

6
Occlusal compatibility

www.indiandentalacademy.com

Proper
occlusal and
proximal
contacts
promote
patient
comfort and
mai...
Maintain tooth position

Prevent migration and extrusion of
the prepared abutment.
www.indiandentalacademy.com

8
Protect against fracture

www.indiandentalacademy.com

9
MECHANICAL
Resist functional

loads.
Resist removal of forces.
Maintain interabutment
alignment.
www.indiandentalacadem...
ESTHETIC
Easily contourable.

Color compatibility.
 Translucency.
 Color stability.


www.indiandentalacademy.com

11
Types of provisional restorations


Prefabricated

Metal
Anatomic metal crown forms
Tin – silver
Nickel chromium
Stock al...
Materials
IDEAL PROPERTIES
1.
2.
3.
4.
5.
6.
7.
8.

Convenient handling
Bio compatibility
Dimensional stability
Ease of co...
MATERIALS
AVAILABLE
Polymethyl methacrylate.
Polyethyl

methacrylate .
Polyvinyl ethyl methyl methacrylate .
Bis acryl...
TECHNIQUES

DIRECT

Provisional restoration is done
on the actual prepared teeth in the
mouth.
INDIRECT
Provisional rest...
DIRECT vs INDIRECT
TECHNIQUES
Direct
1. Intermediate
steps of indirect
technique are
eliminated.
2. Convenient when
assist...
TECNNIQUE FOR PRE FABRICATED
PROVISIONAL RESTORATION

POLY CARBONATE
CROWNS
DIR CT T CH
E
E NIQUE

Select a appropriate si...
3. Mix the auto-

polymerizing resin and fill
the shell ,place the shell
over the tooth and align it.
4. Eliminate any mar...
6. After the resin had set the margins are

marked flash is eliminated ,axial surfaces are
shaped , occlusion is checked ...
INDIRECT PROCEDURE
When the preparation has been
completed make an impression of the
prepared mouth, and pour the cast wit...
4. Fill the crown with resin, and seat it on
the plaster cast firmly. place it in a
bowl of warm water to accelerate
polym...
ALUMINUM CROWN FORMS
They are useful in restoring a single posterior

tooth.
PROCEDURE
1. The mesiodistal width of the too...
5. Apply petrolatum jelly to the pre pared tooth
surface and the adjacent tissues. Mix the auto
polymerizing resin and fil...
Techniques for custom provisional
restorations
Over impression fabricated provisional
restoration
An over impression is ma...
If

tooth to be restored
has any obvious
defects the over
impression can be
made from the
diagnostic cast.
Utility wax i...
When the tooth preparation

is completed impression is
made.
Quick setting plaster is
poured into the impression..
Afte...
Paint the surface of

the

prepared tooth and
surrounding area on the
cast with the separating
media.
Mix the auto
polym...
•After the resin had
set the margins are
marked, flash is
eliminated ,axial
surfaces are shaped ,
occlusion is checked
and...
Over impression fabricated
provisional restorations

www.indiandentalacademy.com

29
www.indiandentalacademy.com

30
TEMPLATE FABRICATED
PROVISIONAL RESTORATION

www.indiandentalacademy.com

31
www.indiandentalacademy.com

32
www.indiandentalacademy.com

33
1.
2.
3.
4.
5.
6.
7.
8.
9.

LIMITATIONS OF PROVISIONAL
RESTORATIONS
Lack of inherent strength.
Poor marginal adaptation.
C...
CEMENTATION

IDEAL PRORERTIES OF LUTING AGENT
Ability to seal against the oral fluids.
Strength consistent with intentio...
TECNNIQUE FOR PRE FABRICAT
PROVISIONAL RESTORATION
POLY CARBONATE CROWNS

Seat crown on
preparation. Mark
gingival contour...
www.indiandentalacademy.com

Cervical
margins
can be
crimped, if
needed
using
crimping
pliers.
Reseat and
check fit.
37
Line crown
with
provisional
acrylic or
resin
material to
enhance fit
and extend
wear
www.indiandentalacademy.com

38
www.indiandentalacademy.com

Remove
from the
mouth and
trim to finish
line using a
carbide bur .
Smooth and
polish as
requ...
www.indiandentalacademy.com

Mix
cement
and fill
crown,
assuring
voids are
not
present
in the
cement.

40
www.indiandentalacademy.com

Seat crown
and allow
cement to
set. Remove
the excess
cement with
scaler or
explorer.
Floss
i...
Temporary metal crowns
Crown selection
Determine
the mesiodistal width.
Select
appropriate
crown.
www.indiandentalacademy....
Trial fit
For chamfer preparation
Press
gently to
stretch
crown cervix
over finish
line of
preparation
www.indiandentalaca...
For shoulder preparation
Slightly flare the
cervix of
crown on the
stretch block.
Do not over
expand.
www.indiandentalacad...
Seat
expanded
crown on
prepared
shoulder

www.indiandentalacademy.com

45
Crown preparation
If gingival
blanching
occurs during
trial fit, trim
crown using
crown
scissors
www.indiandentalacademy.c...
Reset in mouth
and have
patient
establish
occlusion

www.indiandentalacademy.com

47
Use a sharp
explorer to mark
the marginal
contour. Trim
crown back to the
line using a
crown scissors.
Smooth and
polish i...
Mix cement
and fill crown
assuring
voids are not
present in
the cement.

www.indiandentalacademy.com

49
Crown cementation
Seat the
crown and
have the
patient bit
into
occlusion.
www.indiandentalacademy.com

50
Burnish the
cervical
margin to the
preparation
before the
cement sets
completely

www.indiandentalacademy.com

51
Remove
excess
cement with
scaler or
explorer.
Floss
interproximal
areas
www.indiandentalacademy.com

52
Thank you
For more details please visit
www.indiandentalacademy.com

www.indiandentalacademy.com

53
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Provisional restorations finalised /certified fixed orthodontic courses by Indian dental academy

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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.

Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078

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  • crown selection
    Prepare tooth and determine crown size needed using mold guide provided in crown kit.
    Select appropriate crown and trial fit.
    Crown preparation
    Crown lining
    Crown cementation
    .
    .
    .
    .
    .
  • .
  • .
  • Provisional restorations finalised /certified fixed orthodontic courses by Indian dental academy

    1. 1. PROVISIONAL RESTORATIONS INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com 1
    2. 2. A fixed or removable prostheses designed to enhance esthetics, stabilization and /or function for a limited period of time, after which it is to be replaced by a definitive restoration. www.indiandentalacademy.com 2
    3. 3. FUNCTIONS B OGICAL IOL M CH E ANICAL E HT ST E IC www.indiandentalacademy.com 3
    4. 4. BIOLOGICAL Pulpal protection. Maintain periodontal health. Provide occlusal compatibility. Maintain tooth position. Protect against fracture. www.indiandentalacademy.com 4
    5. 5. Pulpal protection The restoration must be fabricated of a material that will prevent. •Conduction of extreme temperatures. •Microbiological infection. •Chemical, mechanical injuries. www.indiandentalacademy.com 5
    6. 6. Periodontal Health •Extent of margins. •Contour. www.indiandentalacademy.com 6
    7. 7. Occlusal compatibility www.indiandentalacademy.com Proper occlusal and proximal contacts promote patient comfort and maintain tooth position. 7
    8. 8. Maintain tooth position Prevent migration and extrusion of the prepared abutment. www.indiandentalacademy.com 8
    9. 9. Protect against fracture www.indiandentalacademy.com 9
    10. 10. MECHANICAL Resist functional loads. Resist removal of forces. Maintain interabutment alignment. www.indiandentalacademy.com 10
    11. 11. ESTHETIC Easily contourable. Color compatibility.  Translucency.  Color stability.  www.indiandentalacademy.com 11
    12. 12. Types of provisional restorations  Prefabricated Metal Anatomic metal crown forms Tin – silver Nickel chromium Stock aluminum cylinders Resin Cellulose acetate Tooth colored poly carbonate crown forms  Custom made www.indiandentalacademy.com 12
    13. 13. Materials IDEAL PROPERTIES 1. 2. 3. 4. 5. 6. 7. 8. Convenient handling Bio compatibility Dimensional stability Ease of contouring and polishing Adequate strength and abrasion resistance Good appearance Good patient acceptance Ease of adding or repairing www.indiandentalacademy.com 13
    14. 14. MATERIALS AVAILABLE Polymethyl methacrylate. Polyethyl methacrylate . Polyvinyl ethyl methyl methacrylate . Bis acryl composite. VLC urethane dimethacrylate. Aluminum. Tin-silver. NiCr. www.indiandentalacademy.com 14
    15. 15. TECHNIQUES DIRECT Provisional restoration is done on the actual prepared teeth in the mouth. INDIRECT Provisional restoration is fabricated outside the mouth on the cast made of quick setting plaster. www.indiandentalacademy.com 15
    16. 16. DIRECT vs INDIRECT TECHNIQUES Direct 1. Intermediate steps of indirect technique are eliminated. 2. Convenient when assistant training and laboratory facilities are inadequate. Indirect 1. No contact of free monomer with the prepared tooth or gingiva, causing damage to the tissue. 2. Better marginal fit. 3. Less chair side work. www.indiandentalacademy.com 16
    17. 17. TECNNIQUE FOR PRE FABRICATED PROVISIONAL RESTORATION POLY CARBONATE CROWNS DIR CT T CH E E NIQUE Select a appropriate sized or slightly larger crown form , and trim the shell to the appropriate size. Try the shell in the prepared mouth. 2. Apply a uniformly thin coat of petroleum jelly on the prepared tooth and surrounding tissues. 1. www.indiandentalacademy.com 17
    18. 18. 3. Mix the auto- polymerizing resin and fill the shell ,place the shell over the tooth and align it. 4. Eliminate any marginal excess. 5. When the polymerization reaches rubbery stage remove the crown and place it in warm water. www.indiandentalacademy.com 18
    19. 19. 6. After the resin had set the margins are marked flash is eliminated ,axial surfaces are shaped , occlusion is checked and adjusted 7. Finally, polish and cement the restoration www.indiandentalacademy.com 19
    20. 20. INDIRECT PROCEDURE When the preparation has been completed make an impression of the prepared mouth, and pour the cast with quick setting plaster. 2. Select a appropriate sized or slightly larger crown form , and trim the shell to the appropriate size. 3. Paint the cast of the prepared tooth and the surrounding area with the separating media. 1. www.indiandentalacademy.com 20
    21. 21. 4. Fill the crown with resin, and seat it on the plaster cast firmly. place it in a bowl of warm water to accelerate polymerization. 5. When the resin is set, remove the provisional crown from the cast, trim the excess , if necessary recontour the axial surfaces ,check the occlusion and adjust it. 6. Finally, polish and cement the restoration. www.indiandentalacademy.com 21
    22. 22. ALUMINUM CROWN FORMS They are useful in restoring a single posterior tooth. PROCEDURE 1. The mesiodistal width of the tooth is measured and appropriate size of the crown is selected. 2. The occluso-cervical height is measured and the crown is trimmed so that it extends 1mm apical to the gingival margin. 3. Crown is placed on the prepared tooth and the margins are trimmed wherever the gingiva blanches. 4. Instruct the patient to close with a moderate force. www.indiandentalacademy.com 22
    23. 23. 5. Apply petrolatum jelly to the pre pared tooth surface and the adjacent tissues. Mix the auto polymerizing resin and fill the crown, place the crown over the tooth. 6. When the polymerization reaches rubbery stage, remove the crown and place it in warm water. 7. After the resin had set the margins are marked, flash is eliminated, axial surfaces are shaped , occlusion is checked and adjusted. 8. Acrylic is added in the deficient parts if any. 9. Finally, polish and cement the restoration . www.indiandentalacademy.com 23
    24. 24. Techniques for custom provisional restorations Over impression fabricated provisional restoration An over impression is made on the diagnostic cast or in the mouth before the tooth preparation had begun. Alginate and elastomeric materials can be used for over impressions. An over impression frequently is made from the patients mouth. www.indiandentalacademy.com 24
    25. 25. If tooth to be restored has any obvious defects the over impression can be made from the diagnostic cast. Utility wax is placed on the defect. Over impression is made from the diagnostic cast. www.indiandentalacademy.com 25
    26. 26. When the tooth preparation is completed impression is made. Quick setting plaster is poured into the impression.. After the plaster sets the cast is retrieved and trimmed . The trimmed cast should have at least one tooth on either side of the prepared tooth. Try the plaster cast into the over-impression. www.indiandentalacademy.com 26
    27. 27. Paint the surface of the prepared tooth and surrounding area on the cast with the separating media. Mix the auto polymerizing resin and place it in the over impression. Seat the cast in the impression. Hold it firmly with a rubber band www.indiandentalacademy.com 27
    28. 28. •After the resin had set the margins are marked, flash is eliminated ,axial surfaces are shaped , occlusion is checked and adjusted •Finally, polish and cement the restoration www.indiandentalacademy.com 28
    29. 29. Over impression fabricated provisional restorations www.indiandentalacademy.com 29
    30. 30. www.indiandentalacademy.com 30
    31. 31. TEMPLATE FABRICATED PROVISIONAL RESTORATION www.indiandentalacademy.com 31
    32. 32. www.indiandentalacademy.com 32
    33. 33. www.indiandentalacademy.com 33
    34. 34. 1. 2. 3. 4. 5. 6. 7. 8. 9. LIMITATIONS OF PROVISIONAL RESTORATIONS Lack of inherent strength. Poor marginal adaptation. Color instability. Poor wear properties. Odor emission. Inadequate bonding characteristics. Poor tissue response to irritation. Arduous cement removal. Time expenditure for fabrication can be prohibitive. www.indiandentalacademy.com 34
    35. 35. CEMENTATION IDEAL PRORERTIES OF LUTING AGENT Ability to seal against the oral fluids. Strength consistent with intentional removal. Low solubility. Blandness or obtundency. Chemical compatibility with the polymer. Easy to dispense and mix. Ease of eliminating excess. Adequate working time and short setting time. Compatibility with definitive luting agent. www.indiandentalacademy.com 35
    36. 36. TECNNIQUE FOR PRE FABRICAT PROVISIONAL RESTORATION POLY CARBONATE CROWNS Seat crown on preparation. Mark gingival contour using a pencil remove the crown and trim 1mm below the line using crown scissors , bur or stone www.indiandentalacademy.com 36
    37. 37. www.indiandentalacademy.com Cervical margins can be crimped, if needed using crimping pliers. Reseat and check fit. 37
    38. 38. Line crown with provisional acrylic or resin material to enhance fit and extend wear www.indiandentalacademy.com 38
    39. 39. www.indiandentalacademy.com Remove from the mouth and trim to finish line using a carbide bur . Smooth and polish as required, using discs and rubber wheel 39
    40. 40. www.indiandentalacademy.com Mix cement and fill crown, assuring voids are not present in the cement. 40
    41. 41. www.indiandentalacademy.com Seat crown and allow cement to set. Remove the excess cement with scaler or explorer. Floss interproximal areas. 41
    42. 42. Temporary metal crowns Crown selection Determine the mesiodistal width. Select appropriate crown. www.indiandentalacademy.com 42
    43. 43. Trial fit For chamfer preparation Press gently to stretch crown cervix over finish line of preparation www.indiandentalacademy.com 43
    44. 44. For shoulder preparation Slightly flare the cervix of crown on the stretch block. Do not over expand. www.indiandentalacademy.com 44
    45. 45. Seat expanded crown on prepared shoulder www.indiandentalacademy.com 45
    46. 46. Crown preparation If gingival blanching occurs during trial fit, trim crown using crown scissors www.indiandentalacademy.com 46
    47. 47. Reset in mouth and have patient establish occlusion www.indiandentalacademy.com 47
    48. 48. Use a sharp explorer to mark the marginal contour. Trim crown back to the line using a crown scissors. Smooth and polish if desired using discs and rubber wheel. and rubber wheel www.indiandentalacademy.com 48
    49. 49. Mix cement and fill crown assuring voids are not present in the cement. www.indiandentalacademy.com 49
    50. 50. Crown cementation Seat the crown and have the patient bit into occlusion. www.indiandentalacademy.com 50
    51. 51. Burnish the cervical margin to the preparation before the cement sets completely www.indiandentalacademy.com 51
    52. 52. Remove excess cement with scaler or explorer. Floss interproximal areas www.indiandentalacademy.com 52
    53. 53. Thank you For more details please visit www.indiandentalacademy.com www.indiandentalacademy.com 53

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