Relining And Rebasing Short Essay Question And Answers

Relining And Rebasing


Relining And Rebasing Definitions

 Relining: A procedure to resurface the tissue surface of the denture with new base material to make the denture it more accurately

Rebasing: A process of refitting a denture by the replacement of the denture base material

Relining And Rebasing Important Notes

Relining And Rebasing:

Indications of Relining And Rebasing:

  • Immediate dentures at 3-6 months after their original construction
  • When the residual alveolar ridges have resorbed and adaptation of the denture base to the ridge is poor
  • When a patient cannot afford the cost of new dentures
  • Geriatric or chronically ill patients
  • Centric occlusion should coincide with centric relation

Contra-Indications of Relining And Rebasing:

  • An excessive amount of resorption
  • Abused soft tissues are present
  • The patient complains of TMJ problems
  • Dentures have poor esthetics
  • Denture creating speech problems
  • Severe osseous undercuts exists until surgical removal and healing occurs

Relining And Rebasing Short Essays

Question 1. Tissue conditioner.

Tissue conditioners are tissue-lining materials

Functions of Tissue conditioner:

  • Permit wider dispersion of forces
  • Aid to decrease the force per unit area transmitted to the supporting tissues
  • Serve as analog of the mucoperiosteum

Composition of Tissue conditioner:

  • Polyethyl methacrylate
  • Aromatic ester
  • Ethyl alcohol

Uses of Tissue conditioner:

  • Tissue treatment
  • Temporary obturator
  • Baseplate stabilization
  • To diagnose the outcome of resilient liners
  • Liners in surgical splints
  • Trial denture base Functional impression material

Question 2. Uses of resilient liners.

Uses of resilient liners:

  • Adjuncts for tissue healing
  • Preserve the residual ridge
  • Heal irritated tissue
  • As temporary obturator
  • Done directly in the mouth
  • Or indirectly after making an impression of the surgical site
  • Stabilization of baseplate
  • Used in presence of undercuts to stabilize the denture base and prevent its breakage
  • Diagnosis of the outcome of resilient liner
  • In case of chronic soreness caused by dentures
  • For surgical splint
  • As it is of stiffer consistency
  • As a trial denture base
  • As functional impression material
  • In the presence of movable tissues

Read And Learn More: Prosthodontics Question And Answers

Relining And Rebasing Tissue Conditioner As A Temporary Obturator

Relining And Rebasing Tissue Conditioner While Fabricating A Temporary Denture Base

Question 3. Open mouth relining.

Boucher’s Technique:

Relining And Rebasing Boucher's Technique

Relining And Rebasing Articulating The Denture And Plaster Template

Question. 4. Relining & rebasing.

Indications for relining the complete denture.


Relining:  A procedure to resurface the tissue surface of the denture with new base material to make the denture fit more accurately

Rebasing:  A process of refitting a denture by the replacement of the denture base material

Indications of relining the complete denture:

  • Immediate dentures after 3–6 months
  • Poor adaptation of dentures
  • Economic
  • Old patients

Contraindications of relining the complete denture:

  • Excessive residual ridge resorption
  • Abused soft tissues
  • TMJ problems
  • Dissatisfied patients
  • Abnormal jaw relations
  • Patient having speech defect
  • Presence of severe undercuts

Advantages of relining the complete denture:

  • The need of frequent visits
  • Economic
  • Good fit
  • Incorporation of soft liner possible

Disadvantages of relining the complete denture:

  • Alters jaw relation
  • Impossible to correct jaw relation, aesthetics
  • Impossible to correct occlusal arrangements
  • Not used in dentures with excessive resorption

Question 5. Remounting procedure.

Used to refine the occlusion of prosthesis

Purpose of Remounting :

  • Reproduce the relationship of the cast at rest & at function
  • Verify the records
  • Correct processing errors
  • Refine occlusion

Requirements of Remounting :

  • Not weaken the cast
  • Not create undercut
  • Be functional
  • Quick & easy to fabricate
  • Easy to remove
  • Provide 3D fit of the denture

Methods of Remounting :

1. Groove indexing method:

  • Two lines are drawn
  • One line sagittally & other transversely

Relining And Rebasing Groove Indexing

2. Notch indexing method:

  • Notches are created one anterior & 2 posterior

Relining And Rebasing Notch Indexing

3. Split remounting plates for indexing:

  • Male & female remounting plates are used
  • These can be fitted to one another & unlocked with the help of locking pins

Relining And Rebasing Fusing The Male Mounting Plate

Relining And Rebasing Female Mounting Plate

Relining And Rebasing Short Question And Answers

Question 1. Conditioning of abused & irritated tissues.

  • Tissue conditioners are used
  • Composition
  • Polymer
  • Monomer
  • Liquid plasticizer

Manipulation of abused:

  • Mixing ratio 1.25 parts polymer, 1 part monomer, 0.5cc plasticizer
  • Mix the ingredients to form a gel
  • Apply sufficient thickness of material to the tissue surface of the denture
  • Insert the denture in the patient’s mouth
  • Carry out border movements

Maintenance of abused:

  • Avoid cleaning with a hard brush
  • Use a soft brush under running water

Question 2. Clinical remounting

Clinical remounting is done using interocclusal records

Steps of Clinical remounting:

  • Occlusal surface of the maxillary denture was lubricated with Vaseline and inserted into mouth
  • Two layers of aluwax are placed over posterior teeth in mandibular fixed partial denture
  • Wax is sealed to the denture
  • A mandibular fixed denture is inserted in the mouth and the mandible is guided into centric relation
  • Next patient is asked to close his mouth such that maxillary teeth penetrate about 1-1.5 mm deep into the wax
  • Dentures are removed
  • They are reinserted and the process is repeated with complete closure
  • A maxillary denture is mounted on the articulator using a remount cast
  • A mandibular denture is repositioned against the articulated maxillary denture using a centric record and articulated

Question 3. Functional relining technique.

Functional relining technique:

  • Suggested by Winkler
  • The patient is advised to avoid nightwear of the denture
  • Occlusal correction is carried out
  • Overextension of the denture are corrected
  • The tissue surface is reduced
  • The tissue conditioning material is placed
  • A denture is inserted in patient’s mouth
  • Impression is removed
  • Trim the excess material
  • The denture is inserted
  • Recall the patient after 3 to 5 days
  • Examine the depressed areas and renew the material
  • The impression is next made with ZOE and the cast is poured

Relining And Rebasing Reducing The Tissue Surface

Relining And Rebasing Making The Tissue Conditioner Impression

Relining And Rebasing Making The Trimming Excess Impression

Question 4. Instructions for patients in care & maintenance of tissue conditioners.

Instructions for patients in care & maintenance of tissue conditioners:

  • Tissue conditioners should not be cleaned by scrubbing with a hard brush to prevent tearing of material
  • The use of soft brush under running water should be done
  • They tend to harden and roughen within 4 to 8 weeks due to the loss of plasticizers
  • Hence, periodic visits should be carried out

Relining And Rebasing Viva Voce

1. Elastic stage of the tissue conditioner is reached in 1- 2 weeks

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