This document discusses glass ionomer cement, including its classification, composition, setting reaction, manipulation, advantages, disadvantages, and limitations. Glass ionomer cement was introduced in 1972 by Drs. Wilson and Kent as a tooth-colored material based on the reaction between silicate glass powder and polyacrylic acid. It bonds chemically to tooth structure and releases fluoride for a relatively long period. The document describes the different types of glass ionomer cements and provides details on their composition, setting reaction when mixed, and how they are manipulated for use in dental procedures. Advantages include adhesion, esthetics, and fluoride release, while disadvantages include susceptibility to erosion, brittleness, and moisture sensitivity. Limitations include weakness against fracture

1. Sri Aurobindo college of dentistry
DEPARTMENT OF PEDODONTICS AND
PREVENTIVE DENTISTRY

2. GUIDED BY-
• Dr. Bharat Bhushan Sir
• Dr. Khushboo Barjatya Mam
• Dr. Binti Rani Chand Mam
• Dr. Preene Juneja Mam
• Dr. Abhilasha M. Tripathi Mam
• Dr. Hariom Meena Sir
SUBMITTED BY-
Rishabh Surana
Batch 2017-18
Roll No. 58

3. glass inomer cement

4. contents
 INTRODUCTION
 CLASSIFICATION
 COMPOSITION
 SETTING REACTION
 MANIPULATION
 ADVANTAGE
 DISADVANTAGE
 LIMITATION

5. INTRODUCTION
 Glass ionomer cement is a tooth coloured material,
introduced by Dr.Wilson & Dr. Kent in 1972.
 Material was based on reaction between silicate
glass powder & polyacrylic acid.
 They bond chemically to tooth structure & release
fluoride for relatively long period.

7. Types Of Glass Ionomer Cements:-
 Type 1: Luting Cements
 Type 2: Restorative Cements
 Type 3: Cavity Liners, Cement Bases
 Type 4: Fissure Sealants
 Type 5: Orthodontic Cements
 Type 6: Core Build Up Material
• Metal Modified GIC:such as miracle mix,glass cermet cement
• Resin Modified GIC:compomer,dicure,tricure system

8.  Fuji 7:World 1st high fluoride non resin containing autocure
GIC (Excellent material for prevention of caries
 Fuji 8: (ART) used as gaediatric or paediatric material
 Fuji 9: (ART) used as gaediatric or paediatric material
 Pit & Fissure Sealants

9. COMPOSITION

10. POWDER:-
 It is an acid soluble calcium fluroalumino silicate
glass.
Silica - 41.9%
Alumina - 28.6%
Aluminum Fluoride - 1.6%
Calcium Fluoride - 15.7%
Sodium Fluoride - 9.3%

11. LIQUID:-
1. Polyacrylic acid in the form co-polymer with itaconic acid &
malic acid.
2. Tartaric acid : improves handling characteristic & increase
working time.
3. Water: Medium of reaction & hydrates the reaction
products.

12. DISPENSING:-
Powder liquid system.
Single component powder (distilled
water).
Preproportioned capsule.

14. setting reaction

15. MANIPULATION
1. Preparation of Tooth Surfaces.
2. Proportioning & Mixing :-
 Powder & liquid ratio is 3:1 by wt. Powder & liquid is
dispensed just prior to mixing.
 First increment is incorporated rapidly into the mix with
stiff bladed spatula.
 Mixing done in folding method to preserves gel
structure. Mixing time of GIC is 30-45 seconds.
 Finished mix should have a glossy surface.

16. 3. Protection Of Cement During Setting:-
 GIC is extremely sensitive to air and water during setting.
 It should be protected from moisture as well as drying
during setting for few days.
4. Finishing:-
 Excess material should be trimmed from margins.
 Hand instruments are preferred to rotary tools to avoid
ditching.
 Further finishing is done after 24hrs.

17. 5. Protection Of Cement After Setting:-
 Before dismissing the patient, restoration is again
coated with the protective agent to protect
trimmed area.
 Failure to protect for first 24hrs results in weaken
cement.

18. advantages
 Adhesive.
 Esthetic .
 Fluoride Releasing.
 Good Thermal Insulator.

19. disadvantages
 Susceptible to erosion and wear.
 Brittle.
 Moisture Sensitive.
 Initial Slow Setting.

20. limitation
 Resistance to fracture is one of the main
Limitation of using GIC. It is generally quite
satisfactory for one-surface lesion but a two
surface lesion always at risk.
 GIC are brittle in nature & hence contraindicated
for class 2 & class 5 cavities for replacement of
lost cusps-areas.
 Cannot be used as amalgam replacement
material.
 Should not be used in contact with the zinc oxide
eugenol cements.

21. thank you