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Cementation in Fixed
Prosthodontics
BY :
ABDEL RAHMEN M. ABDEL HAMEED
Content
Clinical importance
Bonding mechanisms
Classification of luting
cements
Ideal criteria of luting
cements
Cement se...
Content
Clinical importance
Bonding mechanisms
Classification of luting
cements
Ideal criteria of luting
cements
Cement se...
Clinical importance
Content
Clinical importance
Bonding mechanisms
Classification of luting
cements
Ideal criteria of luting
cements
Cement se...
Bonding Mechanisms
Mechanical bonding
Molecular Adhesion
Micromechanical
bonding
Bonding Mechanisms
Mechanical bonding
Molecular Adhesion
Micromechanical
bonding
Mechanical bonding:
Bonding Mechanisms
Mechanical bonding
Molecular Adhesion
Micromechanical
bonding
Molecular Adhesion
 Molecular adhesion include the use of chemical
bonding between tow materials. Such as chemical
bondin...
Bonding Mechanisms
Mechanical bonding
Molecular Adhesion
Micromechanical
bonding
Micromechanical bonding
 This mechanism use the microstructure of the tooth structure to provide retention.
 The bond strength of micromechanical bonding mechanism sometimes
exceed the cohesive bond of enamel.
 Ceramics can be e...
Content
Clinical importance
Bonding mechanisms
Classification of luting
cements
Ideal criteria of luting
cements
Cement se...
Classification of luting cements
According to the
duration in clinical
performance
definitive
Provisional
According to
rea...
Content
Clinical importance
Bonding mechanisms
Classification of luting
cements
Ideal criteria of luting
cements
Cement se...
Ideal criteria of luting cements
 Physical properties
 Biocompatibility
 Sealing and Anticariogenic Activity
 Adhesion
 Mechanical properties
 Fatigue strength
 Fracture toughness
 Elastic Modulus
 Wear
 Handling and radiopoacity
 Ease of use
 long working time
 short setting time
 Radiopoacity
 Esthetic
Content
Clinical importance
Bonding mechanisms
Classification of luting
cements
Ideal criteria of luting
cements
Cement se...
Cement selection
Zinc phosphate cement
Zinc polycarboxylate
cement
Glass Ionomer cements
Zinc oxide eugenol
cements:
Resin...
Cement selection
Zinc phosphate cement
Zinc polycarboxylate
cement
Glass Ionomer cements
Zinc oxide eugenol
cements:
Resin...
Zinc phosphate cement
 Compressive strength (st): 96-110 Mpa
 Tensile st: 9.3 Mpa
 PH during cementation: 3.5
 Film th...
Cement selection
Zinc phosphate cement
Zinc polycarboxylate
cement
Glass Ionomer cements
Zinc oxide eugenol
cements:
Resin...
Zinc polycarboxylate cement
 Compressive st: 50-80 Mpa
 Tensile St: 7-10 Mpa
 Bond strength to tooth structure: 9 Mpa
f...
Cement selection
Zinc phosphate cement
Zinc polycarboxylate
cement
Glass Ionomer cements
Zinc oxide eugenol
cements:
Resin...
Glass Ionomer cements
 Compressive st: 127 Mpa
 Tensile st: 8Mpa
 Bond st to tooth structure: 9 Mpa for enamel and 3 Mp...
 advantages
 fluoride
 Bond to tooth structure
 good esthetic properties
 less soluble than zinc phosphate cement
 G...
 disadvantages
 high acidity
 sensitive to both moisture and dehydration
 . GIC is translucent
Cement selection
Zinc phosphate cement
Zinc polycarboxylate
cement
Glass Ionomer cements
Zinc oxide eugenol
cements:
Resin...
Zinc oxide eugenol cements:
Cement selection
Zinc phosphate cement
Zinc polycarboxylate
cement
Glass Ionomer cements
Zinc oxide eugenol
cements
Resin ...
Resin cements
 Compressive st: 200-250 Mpa
 Tensile st: 40-50Mpa
 Film thickness: 25 um
 Solubility in water: Insoluble
 Resin cements are composed of organic matrix such as BISGMA or UDMA
and inorganic fillers
 Advantages
 high mechanical...
 disadvantages
 polymerization shrinkage
 pulpal irritation
 difficulty of removing the hardening
excess cements.
Classification of resin cement
According to
the adhesive
scheme
Self-etching Self-adhesive
Total etching
According to
the ...
Total etching resin cements
 use three step bonding technique
 Acid etching
 Bonding
 Cement application
Self-etching
 The bonding agent is applied directly to
the tooth structure and cured, and then
the resin cement is applie...
Self-adhesive resin cements
 The adhesive resin cement can be applied
directly to the tooth structure. It provide the bes...
Cement selection
Zinc phosphate cement
Zinc polycarboxylate
cement
Glass Ionomer cements
Zinc oxide eugenol
cements
Resin ...
Resin modified glass ionomer
 Compressive st: 150 Mpa
 Tensile st: 25-35 Mpa
 Film thickness: 20 um
 Resin modified gl...
Content
Clinical importance
Bonding mechanisms
Classification of luting
cements
Ideal criteria of luting
cements
Cement se...
Cementation
Cementation with Zinc
phosphate cement
Cementation with Zinc
polycarboxylate cement
Cementation with glass
ion...
Cementation
Cementation with Zinc
phosphate cement
Cementation with Zinc
polycarboxylate cement
Cementation with glass
ion...
Cementation with Zinc phosphate
cement
 tips for cementation :
 Complete isolation is necessary during the whole
process...
 Divide the powder in small increments each
of 3 mm thickness.
 Mixing time is 10-20 seconds for each
increment.
 Mix i...
 grooves, pins, and inlays ---> fill them before
seating the restoration
 If necessary use the retraction cord in the
su...
Cementation
Cementation with Zinc
phosphate cement
Cementation with Zinc
polycarboxylate cement
Cementation with glass
ion...
Cementation with Zinc
polycarboxylate cement
 Tips for cementation:
 Isolation
 wash the restoration and clean it with ...
 brush the cement inside the restoration, seat
the restoration, ask the patient to bite over
aplastic wafer
 setting tim...
Cementation
Cementation with Zinc
phosphate cement
Cementation with Zinc
polycarboxylate cement
Cementation with glass
ion...
Cementation with glass ionomer
cements
 tips for cementation
 isolation
 coat outside the restoration with petroleum
 ...
 mix rapidly until the mix become creamy
 capsule form is now available in the market
 Brush the restoration with the c...
Cementation
Cementation with Zinc
phosphate cement
Cementation with Zinc
polycarboxylate cement
Cementation with glass
ion...
Cementation with resin cements
 Tooth preparation :
 isolation ( rubber dam is a must)
 clean the tooth with pumice and...
 if self-etching system is used
 apply the self-etching bond , wait for 1 minutes and
cure
 If total etching system wil...
 treatment of the fitting surface of the restoration :
 The fitting surface of the restoration is treated
before receivi...
Content
Clinical importance
Bonding mechanisms
Classification of luting
cements
Ideal criteria of luting
cements
Cement se...
Special consideration:
Cementation of ceramic
restorations
Bonding of resin to
zirconia:
Cementation of posts
Cementation ...
Special consideration:
Cementation of ceramic
restorations
Bonding of resin to
zirconia:
Cementation of posts
Cementation ...
Cementation of ceramic restorations
 tooth preparation
 restoration preparation differ according to the type of the cera...
Special consideration:
Cementation of ceramic
restorations
Bonding of resin to
zirconia:
Cementation of posts
Cementation ...
Bonding of resin to zirconia:
 sandblasting and silanation of zirconia
 Plasma spraying
 Porcelain particles infusion
Special consideration:
Cementation of ceramic
restorations
Bonding of resin to
zirconia:
Cementation of posts
Cementation ...
Cementation of posts
 Metallic posts
 Fiber posts
Special consideration:
Cementation of ceramic
restorations
Bonding of resin to
zirconia:
Cementation of posts
Cementation ...
Cementation of partial coverage
restoration
Special consideration:
Cementation of ceramic
restorations
Bonding of resin to
zirconia:
Cementation of posts
Cementation ...
Cementation of the gold alloy:
cementation in Fixed prosthodontics
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cementation in Fixed prosthodontics

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This presentation provide brief information about different types of cements in Dentistry. also you will find information about cementation tips and techniques. Recent resin cements are also included in this presentation

Published in: Education
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cementation in Fixed prosthodontics

  1. 1. Cementation in Fixed Prosthodontics BY : ABDEL RAHMEN M. ABDEL HAMEED
  2. 2. Content Clinical importance Bonding mechanisms Classification of luting cements Ideal criteria of luting cements Cement selection Cementation Special consideration:
  3. 3. Content Clinical importance Bonding mechanisms Classification of luting cements Ideal criteria of luting cements Cement selection Cementation Special consideration:
  4. 4. Clinical importance
  5. 5. Content Clinical importance Bonding mechanisms Classification of luting cements Ideal criteria of luting cements Cement selection Cementation Special consideration:
  6. 6. Bonding Mechanisms Mechanical bonding Molecular Adhesion Micromechanical bonding
  7. 7. Bonding Mechanisms Mechanical bonding Molecular Adhesion Micromechanical bonding
  8. 8. Mechanical bonding:
  9. 9. Bonding Mechanisms Mechanical bonding Molecular Adhesion Micromechanical bonding
  10. 10. Molecular Adhesion  Molecular adhesion include the use of chemical bonding between tow materials. Such as chemical bonding, occur between the COOH group of the zinc polycarboxylate and glass ionomer (GIC) cements and the tooth structure.  Silane coupling agent is another example for molecular bonding mechanism
  11. 11. Bonding Mechanisms Mechanical bonding Molecular Adhesion Micromechanical bonding
  12. 12. Micromechanical bonding  This mechanism use the microstructure of the tooth structure to provide retention.
  13. 13.  The bond strength of micromechanical bonding mechanism sometimes exceed the cohesive bond of enamel.  Ceramics can be etched with hydrophloric acid and silanated, before using resin cement with it. Metals also can be prepared by electrolytic etching, chemical etching or sandblasting before using the resin cement with it.
  14. 14. Content Clinical importance Bonding mechanisms Classification of luting cements Ideal criteria of luting cements Cement selection Cementation Special consideration:
  15. 15. Classification of luting cements According to the duration in clinical performance definitive Provisional According to reaction mechanism acid base reaction polymerization reaction
  16. 16. Content Clinical importance Bonding mechanisms Classification of luting cements Ideal criteria of luting cements Cement selection Cementation Special consideration:
  17. 17. Ideal criteria of luting cements  Physical properties  Biocompatibility  Sealing and Anticariogenic Activity  Adhesion
  18. 18.  Mechanical properties  Fatigue strength  Fracture toughness  Elastic Modulus  Wear
  19. 19.  Handling and radiopoacity  Ease of use  long working time  short setting time  Radiopoacity  Esthetic
  20. 20. Content Clinical importance Bonding mechanisms Classification of luting cements Ideal criteria of luting cements Cement selection Cementation Special consideration:
  21. 21. Cement selection Zinc phosphate cement Zinc polycarboxylate cement Glass Ionomer cements Zinc oxide eugenol cements: Resin cements Resin modified glass ionomer
  22. 22. Cement selection Zinc phosphate cement Zinc polycarboxylate cement Glass Ionomer cements Zinc oxide eugenol cements: Resin cements Resin modified glass ionomer
  23. 23. Zinc phosphate cement  Compressive strength (st): 96-110 Mpa  Tensile st: 9.3 Mpa  PH during cementation: 3.5  Film thickness: 10-20 um
  24. 24. Cement selection Zinc phosphate cement Zinc polycarboxylate cement Glass Ionomer cements Zinc oxide eugenol cements: Resin cements Resin modified glass ionomer
  25. 25. Zinc polycarboxylate cement  Compressive st: 50-80 Mpa  Tensile St: 7-10 Mpa  Bond strength to tooth structure: 9 Mpa for Enamel and 3.3 Mpa for Dentin.  PH during cementation: 4.8  Film thickness: 13-20 um
  26. 26. Cement selection Zinc phosphate cement Zinc polycarboxylate cement Glass Ionomer cements Zinc oxide eugenol cements: Resin cements Resin modified glass ionomer
  27. 27. Glass Ionomer cements  Compressive st: 127 Mpa  Tensile st: 8Mpa  Bond st to tooth structure: 9 Mpa for enamel and 3 Mpa for dentin  Film thickness: 9.5 – 16 um
  28. 28.  advantages  fluoride  Bond to tooth structure  good esthetic properties  less soluble than zinc phosphate cement  GIC is 65% more retentive than zinc phosphate cement.
  29. 29.  disadvantages  high acidity  sensitive to both moisture and dehydration  . GIC is translucent
  30. 30. Cement selection Zinc phosphate cement Zinc polycarboxylate cement Glass Ionomer cements Zinc oxide eugenol cements: Resin cements Resin modified glass ionomer
  31. 31. Zinc oxide eugenol cements:
  32. 32. Cement selection Zinc phosphate cement Zinc polycarboxylate cement Glass Ionomer cements Zinc oxide eugenol cements Resin cements Resin modified glass ionomer
  33. 33. Resin cements  Compressive st: 200-250 Mpa  Tensile st: 40-50Mpa  Film thickness: 25 um  Solubility in water: Insoluble
  34. 34.  Resin cements are composed of organic matrix such as BISGMA or UDMA and inorganic fillers  Advantages  high mechanical properties  good seal abilities  good bond strength  no solubility  excellent esthetic
  35. 35.  disadvantages  polymerization shrinkage  pulpal irritation  difficulty of removing the hardening excess cements.
  36. 36. Classification of resin cement According to the adhesive scheme Self-etching Self-adhesive Total etching According to the mode of polymerization Chemical cure Light cure Dual cure
  37. 37. Total etching resin cements  use three step bonding technique  Acid etching  Bonding  Cement application
  38. 38. Self-etching  The bonding agent is applied directly to the tooth structure and cured, and then the resin cement is applied.
  39. 39. Self-adhesive resin cements  The adhesive resin cement can be applied directly to the tooth structure. It provide the best retention with dentin.
  40. 40. Cement selection Zinc phosphate cement Zinc polycarboxylate cement Glass Ionomer cements Zinc oxide eugenol cements Resin cements Resin modified glass ionomer
  41. 41. Resin modified glass ionomer  Compressive st: 150 Mpa  Tensile st: 25-35 Mpa  Film thickness: 20 um  Resin modified glass ionomer combine the strength and the insolubility advantages of the resin cements and the fluoride release of the GIC
  42. 42. Content Clinical importance Bonding mechanisms Classification of luting cements Ideal criteria of luting cements Cement selection Cementation Special consideration:
  43. 43. Cementation Cementation with Zinc phosphate cement Cementation with Zinc polycarboxylate cement Cementation with glass ionomer cements Cementation with resin cements
  44. 44. Cementation Cementation with Zinc phosphate cement Cementation with Zinc polycarboxylate cement Cementation with glass ionomer cements Cementation with resin cements
  45. 45. Cementation with Zinc phosphate cement  tips for cementation :  Complete isolation is necessary during the whole process.  Vital teeth ---> two layers of varnish or bonding agent should be applied first.  Non-vital teeth ---> No need for varnish.  Liquid/Powder Proportions: six drop of liquid for each crown.  Do not dispense the liquid until just before mixing.
  46. 46.  Divide the powder in small increments each of 3 mm thickness.  Mixing time is 10-20 seconds for each increment.  Mix in circular motion.  Mix over wide area of the glass slab  introduce the powder slowly in to the liquid  check the consistency  Bruch the cement inside the fitting surface
  47. 47.  grooves, pins, and inlays ---> fill them before seating the restoration  If necessary use the retraction cord in the sulcus.  seat the restoration  ask the patient to close over a plastic wafer  Leave the cement to fully set then remove the excess.
  48. 48. Cementation Cementation with Zinc phosphate cement Cementation with Zinc polycarboxylate cement Cementation with glass ionomer cements Cementation with resin cements
  49. 49. Cementation with Zinc polycarboxylate cement  Tips for cementation:  Isolation  wash the restoration and clean it with alcohol  sandblast the fitting surface  coat the outer surface with petroleum  Powder/Liquid Proportion : according to manufactures instructions  working time: 30 seconds
  50. 50.  brush the cement inside the restoration, seat the restoration, ask the patient to bite over aplastic wafer  setting time: 3 minutes  Remove the excess either before or after the cement become rubbery.
  51. 51. Cementation Cementation with Zinc phosphate cement Cementation with Zinc polycarboxylate cement Cementation with glass ionomer cements Cementation with resin cements
  52. 52. Cementation with glass ionomer cements  tips for cementation  isolation  coat outside the restoration with petroleum  Clean the tooth with brush and pumice. don’t use acid etch for this step  Don not use varnish  Powder / Liquid proportions : one scoop of powder/ two drops of liquid  working time: 60 seconds  setting time : 3 minutes
  53. 53.  mix rapidly until the mix become creamy  capsule form is now available in the market  Brush the restoration with the cement; seat the restoration, ask the patient to occlude over the plastic wafer.  Wait until the cement become brittle but before complete setting and remove the excess cement.  Coat the crown margin with varnish or petroleum
  54. 54. Cementation Cementation with Zinc phosphate cement Cementation with Zinc polycarboxylate cement Cementation with glass ionomer cements Cementation with resin cements
  55. 55. Cementation with resin cements  Tooth preparation :  isolation ( rubber dam is a must)  clean the tooth with pumice and brush, clean and dry  if total etching system is used :  apply the acid etch ( phosphoric acid 37% ) 30 seconds for enamel and 10 seconds for dentin  wash and dry ( don’t dissipate dentin)  apply the bond with brush, wait for 1 minute, cure for 20 seconds
  56. 56.  if self-etching system is used  apply the self-etching bond , wait for 1 minutes and cure  If total etching system will be used the tooth not need any preparation more than cleaning with brush.
  57. 57.  treatment of the fitting surface of the restoration :  The fitting surface of the restoration is treated before receiving the resin cement by two ways  Roughening the surface to increase the surface area and create a microspores In the restoration surface  Increase the wettability of the restoration surface with silane coupling agent.  Roughnining of the fitting surface can be achieved by various techniques depending on the type of the restoration.
  58. 58. Content Clinical importance Bonding mechanisms Classification of luting cements Ideal criteria of luting cements Cement selection Cementation Special consideration:
  59. 59. Special consideration: Cementation of ceramic restorations Bonding of resin to zirconia: Cementation of posts Cementation of partial coverage restoration Cementation of the gold alloy:
  60. 60. Special consideration: Cementation of ceramic restorations Bonding of resin to zirconia: Cementation of posts Cementation of partial coverage restoration Cementation of the gold alloy:
  61. 61. Cementation of ceramic restorations  tooth preparation  restoration preparation differ according to the type of the ceramic material:  Feld spathic porcelain ( HF + S )  Lucite reinforced ceramics (IPS Empress): ( sand + S )  Lithium disilicate (IPS Emax( ( Sand + HF + S )  Zirconia  Lava ( Silica )  Cercon ( Silica + MDP )  other types such as IPS Emax zircad and Ketana (Phosphoric acid monomer containing primer)
  62. 62. Special consideration: Cementation of ceramic restorations Bonding of resin to zirconia: Cementation of posts Cementation of partial coverage restoration Cementation of the gold alloy:
  63. 63. Bonding of resin to zirconia:  sandblasting and silanation of zirconia  Plasma spraying  Porcelain particles infusion
  64. 64. Special consideration: Cementation of ceramic restorations Bonding of resin to zirconia: Cementation of posts Cementation of partial coverage restoration Cementation of the gold alloy:
  65. 65. Cementation of posts  Metallic posts  Fiber posts
  66. 66. Special consideration: Cementation of ceramic restorations Bonding of resin to zirconia: Cementation of posts Cementation of partial coverage restoration Cementation of the gold alloy:
  67. 67. Cementation of partial coverage restoration
  68. 68. Special consideration: Cementation of ceramic restorations Bonding of resin to zirconia: Cementation of posts Cementation of partial coverage restoration Cementation of the gold alloy:
  69. 69. Cementation of the gold alloy:

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