Dnetal crown &types &advantage

1. By: mohammed al-maleesi

2. What is a dental crown?
 A dental crown is an artificial tooth that has similar color of
the natural tooth and covers the damaged tooth to protect
what remained of the tooth and gives it the original shape
and function as it used to be

3. Why is the dental crown needed?
 To cover and support tooth which needs a large filling when
there is not a lot of tooth portion is left
 To protect a tooth that weakened by cavities and decays
from breaking, or hold together a cracked tooth

4.  To restore a fractured tooth or a tooth that has been
severely worn down
 To cover the teeth that are suffering from discoloration

5.  To cover a dental implant and fits it to make it looking
natural
 To hold the dental bridge in its place

6. What kind of materials are used to make
crowns?
 All Ceramic
 Porcelain-fused to metal
 Metal alloy
 Gold alloy

7. Ceramic crowns
 They are made purely from ceramic and no other material
 The feature of these crowns is that they are made from a
translucent material which makes the teeth more attractive
 This means a top quality crown which will last for many
years

8.  ADVANTAGES:
1. Attractive and natural appearance
2. Made from thinner material which makes a lighter crown
3. No risk of allergic reaction or sensitivity
 Disadvantages:
1. It is less durable than other types of crowns which means it is more
prone to cracking or breaking.
2. They are more expensive than other types or crowns

9. Porcelain fused to metal (PFM) crowns
 They are consist of a metal base and porcelain cover the
metal
 These crowns can provide both good aesthetics and
strength.
 They are often fitted onto back teeth and are considered a
strong type of crowns

10.  Advantages:
1. Strong and long lasting
2. Cheaper than pure ceramic crowns
 Disadvantages:
1. Appearance of grey line arround the edge of crown and the gum and
less translucency
2. Its thicker type of crowns which means the dentist should remove
larger portion of the natural tooth to fits the crown instead

11. Metal crowns
 They are considered to be the strongest and most resistant
crowns
 Mostly they are used to cover the third molars because they
are out of sight
 They are made of different kinds of metals such as stainless
steel and silver and other metals

12.  Advantages:
1. Stronger
2. Cheaper
3. Rarely wear or break
 Diasdvantages:
1. Metallic color
2. Affected by heat and cold
3. It may costs too much such as golden crowns

13. Golden crowns
 They are the crowns that are made of gold (the technique
that has been existed for over a hundred years
 They are flexible and easily take the shape of the tooth by
asking the patient to bite it for first time
 They can serve for several years according to their resistance

15.  Advantages:
1. Highly resistant to fracture and wear due to its strength.
2. Seals well to prevent leakage and recurrent tooth decay.
3. Can lasts for long period of time
4. Non toxic material
 Disadvantages:
1. They cost too much
2. The golden color or appearance may be unpleasant for some
individuals

16. Temporary vs permanent
 Temporary crown: can be made in dentist’s clinic and made
of acrylic or stainless steel and can be used until the
permanent crown will be ready
 Permanent crown: they are fabricated in the dental
laboratory and while they are under construction we r using
the temporary ones

17. Thank you for your attention