Management Of Discolored Teeth Question And Answers

Management Of Discolored Teeth Important Notes

• Management Of Discolored Teeth Superoxol
  • It is 30% solution of hydrogen peroxide by weight and 100% by volume in pure distilled water
  • It is mixed with sodium perborate into a paste and used in walking bleach technique
• Management Of Discolored Teeth Bleaching techniques:
  • Non vital bleaching technique
    • Thermocatalytic
      • It involves the placement of 35% hydrogen peroxide liquid into the debrided pulp chamber and acceleration of the oxidation process by heating instrument into pulp chamber.
    • Walking bleach
      • In this technique, superoxol is used
  • Vital bleaching technique
    • Power bleaching
      • 35% hydrogen peroxide is used and oxidation is acceletated by applying heat or intense light
    • Night guard bleach
      • 10-15% carbamide peroxide is applied with the help of bleaching trays
• Management Of Discolored Teeth Composition of Mc Inns solution.

Management Of Discolored Teeth Long Essays

Question 1. Management of discolored teeth
Answer.

Causes of Discolored Teeth Intrinsic Stains:

• Pre-eruptive causes:
  • Disease-Haematological disorders
  • Medication-tetracycline
• Post-eruptive causes:
  • Pulpal changes
  • Trauma
  • Aging
  • Dental caries

Causes of Discolored Teeth Extrinsic Stains:

• Daily acquired stains:
  • Plaque
  • Tobacco use
  • Poor oral hygiene
  • Gingival haemorrhage
• Chemicals:
  • Chlorhexidine
  • Metallic stains

Bleaching Is Done To Treat Discolored Teeth

Bleaching: It is a procedure which involves lightening of the color of a tooth through the application of a chemical agent to oxidize the organic pigmentation in the tooth.

Bleaching Techniques:

• For vital teeth
  • Home bleaching
  • In-office bleaching
  • Thermocatalytic
  • Non-thermocatalytic
  • Micro abrasion
• For non-vital teeth
  • Thermocatalytic
  • Walking bleach
  • Inside/Outside
  • Closed chamber
• Laser assisted bleaching

Nightguard Bleaching Indications:

• Mild generalized
• Age related
• Mild fluorosis
• Mild tetracycline staining
• Superficial staining
• Stains from smoking tobacco

Bleaching Contra-indications:

• Teeth with insufficient enamel
• Severe fluorosis
• Non-complaint patients
• Pregnancy
• Severe tetracycline staining
• Fractured tooth
• Opaque white spots

Read And Learn More: Endodontics Question and Answers

Bleaching Steps:

Bleaching Agents Used:

• 10% carbamide peroxide
• 15% carbamide peroxide
• Hydrogen peroxide

Bleaching Side Effects:

• Gingival irritation
• Altered taste sensation
• Tooth Sensitivity

Management Of Discolored Teeth Short Essays

Question 1. Vital bleaching.
Answer.

In-office bleaching:

• It uses 35% hydrogen peroxide solution

Vital bleaching Indications:

• Mild fluorosis
• Mild tetracycline stains
• In severe discoloration
• To match existing color of the crown that is lighter than natural teeth

Vital bleaching Contraindications:

• Superficial stains
• Carious tooth structure
• Hypersensitive teeth
• Children with the large pulp chamber
• Pregnant and lactating mothers
• Exposed root surfaces

Vital bleaching Technique:

At-home bleaching Indications:

• Superficial enamel discolorations
• Mild yellow discolorations
• Brown fluorosis discolorations
• Age-related discolorations

At-home bleaching Contraindication:

• Severe enamel loss
• Hypersensitive teeth
• Bruxism
• Presence of caries
• Defective coronal restorations
• Allergy to bleaching gels

At-home bleaching Technique:

Question 2. Carbamide peroxide
Answer:

Carbamide peroxide Definition

• It is also known as urea hydrogen peroxide
• Its concentration ranges from 3-45% depending on at home and in office bleach
• Commonly 10% carbamide peroxideis used

Carbamide peroxide Mechanism Of Action

• Carbamide Peroxide→Urea + Ammonia + carbon dioxide + 3.5% hydrogen peroxide

Question 3. Thermocatalytic Bleaching.
Answer.

Thermocatalytic Bleaching Light Sources Used:

• Conventional
• Tungsten halogen
• Xenon plasma
• Argon and Co₂
• Diode laser

Thermocatalytic Bleaching Indication:

• Superficial stains
• Mild to moderate stains

Thermocatalytic Bleaching Contraindications:

• Extensive restoration
• Severe discoloration
• Extensive caries

Thermocatalytic Bleaching Advantages:

• Comfortable to patient
• Less time needed
• Safe

Thermocatalytic Bleaching Disadvantages:

• Expensive
• Frequent
• Dehydration of teeth
• Rubber dam discomfort.

Thermocatalytic Bleaching Procedure:

Question 4. Microabrasion.
Answer.

Microabrasion

In it, a microscopic layer of enamel is eroded and abraded with solution leaving intact enamel.

Microabrasion Indications:

• Intrinsic stains
• Hypomineralised enamel
• Decalcification
• Enamel fluorosis
• Superficial stains

Microabrasion Contra-Indications:

• Age-related
• Hypoplastic lesions
• Deep stains
• Tetracycline staining

Microabrasion Advantages:

• Minimum discomfort
• Easy
• Results in shiny and smooth surface

Microabrasion Disadvantages:

• Ineffective for deeper stains
• Removes enamel layer

Microabrasion Steps: 

Question 5. Bleaching of non-vital tooth.
Answer.

Bleaching of non-vital tooth – Thermocatalytic technique:

Bleaching of the non-vital tooth – Walking Bleach technique:

Bleaching of the non-vital tooth- Inside/Outside Bleaching:

Closed chamber:

• Bleaching paste was applied to the tooth via a bleaching tray

Question 6. Walking Bleach.
Answer.

Walking Bleach Indications:

• Discoloration of the pulp chamber
• Moderate to severe tetracycline staining
• Dentin discoloration

Walking Bleach Contraindications:

• Defective enamel
• Enamel discoloration
• Presence of caries

Walking Bleach Steps:

Question 7. Microbrasion and macrobrasion.
Answer.

Microbrasion and macrobrasio

In it a microscopic layer of enamel is eroded and abraded with solution leaving intact enamel.

Microbrasion Indications:

• Intrinsic stains
• Hypomineralised enamel
• Decalcification
• Enamel fluorosis
• Superficial stains

Microbrasion Contra-Indications:

• Age-related
• Hypoplastic lesions
• Deep stains
• Tetracycline staining

Microbrasion Advantages:

• Minimum discomfort
• Easy
• Results in shiny and smooth surface

Microabrasion Disadvantages:

• Ineffective for deeper stains
• Removes enamel layer

Macroabrasion

• It involves using of dental drill and finishing bur to remove stains
• In this composite finishing bur is used on a high speed hand piece to remove the defect
• While working on the defect very light pressure is applied to prevent any irreversible damage to the tooth
• The process is finished with abrasive rubber point
• During the process air water spray is used to maintain the temperature and to keep the tooth hydrated

Management Of Discolored Teeth Short Questions And Answers

Question 1. Causes of Discoloration of tooth.
Answer.

Discoloration of tooth Intrinsic Stains:

• Pre-eruptice causes:
  • Disease-Haematological disorders
  • Medication-tetracycline
• Post-eruptive causes:
  • Pulpal changes
  • Trauma
  • Aging
  • Dental caries

Discoloration of tooth Extrinsic Stains:

• Daily acquired stains:
  • Plaque
  • Tobacco use
  • Poor oral hygiene
  • Gingival haemorrhage
  • Chemicals
  • Chlorhexidine
  • Metallic stains

Question 2. Mc-Innes Solution.
Answer.

Mc-Innes Solution Composition:

• 30% Hydrogen peroxide – 5 parts
• 36% hydrochloric acid – 5 parts
• Anesthetic ether – 1 part

Mc-Innes Solution Method:

Apply the solution with a cotton pellet to the stained area and allow it to remain for 5-10 minutes

Question 3. Superoxol
Answer.

Superoxol

• It is 30% solution of hydrogen peroxide by weight in 100% volume of distilled water
• It is powerful oxidizing agent
• It is highly irritating of the soft tissues

Question 4. Uses of laser in endodontics
Answer.

Uses of laser in endodontics

• Diagnosis
  • Laser Doppler flowmetry – to assess blood flowmetry
  • Nd:YAG laser – for vitality test
• Pulp capping and Pulpotomy
  • To treat exposed pulp tissues using Co2 lasers
• Root canal treatment
  • To modify root canal walls
  • Sterilization of root canals
• Treatment of incomplete fracture
• Apicoectomy
• Treatment of dentinal hypersensitivity
• Sterilization of instruments
• Bleaching