prostho iv - slides 1 - introduction & overview of clinical & laboratory procedures

Notebook

Introduction & Overview of Clinical & Laboratory Procedures

Khaled Q Al Hamad BDS MSc MRD RCSEdAssociate ProfessorJordan University of Science & TechnologyDent 445- Lecture 1Sunday 22/9/2012

ClinicVisit 1: Primary impression

(Lab 1)

Visit 2: Secondary/definitive

Impression

(Lab2 )

Visit 3: Occlusal registration

(Lab 3)

Visit 4: Try in

(Lab 4)

Visit 5: Insertion

LaboratoryLab 1:making the masterCasts and custom trays

Lab 2:Making occlusal wax rim

Lab 3: Teeth arrangement and wax up

Lab 4:Processing , finishing the dentures ready for insertion

Fabrication of Complete Dentures:
Clinical & Laboratory Steps


(Lab 1)


Impression

(Lab2 )


(Lab 3)

Visit 4: Try in

(Lab 4)

Visit 5: Insertion






Visit 1: Primary impression

Maxillary

Residual ridges including the full extent of the tuberosities and the hamular notch.

Functional depth of the labial & buccal sulci, including frenae & muscle attachments.

The hard palate & its junction with soft palate.

Mandibular

Residual ridge, including the full extent of the retromolar pad area.

Functional depth of the labial & buccal sulci, including frenae, muscle attachments, and the external oblique ridge.

The lingiual sulci, frenum, myloyioid ridges & the retromylohyoid areas.


(Lab 1)


Impression

(Lab2 )


(Lab 3)

Visit 4: Try in

(Lab 4)

Visit 5: Insertion






It is recommended that the clinician will indicate the extent of the denture bearing area. Also the spacing and the design form of the tray should be indicated on the laboratory form.


(Lab 1)


Impression

(Lab2 )


(Lab 3)

Visit 4: Try in

(Lab 4)

Visit 5: Insertion






Visit 2: Definitive Impression

Clinical Aim: to record the denture-bearing areas, the appropriate degree of tissue displacement, and the functional width and depth of the sulci.


(Lab 1)


Impression

(Lab2 )


(Lab 3)

Visit 4: Try in

(Lab 4)

Visit 5: Insertion






Lab 2

Technicians Aim:Definitive/Master/2nd impression is cast in stone providing the master cast. The dentist should scribe on the impression the planned position of the post dam, and the planned preservation of the peripheral roll.

Block & relief areas.

Production of the baseplates and wax rims.


(Lab 1)


Impression

(Lab2 )


(Lab 3)

Visit 4: Try in

(Lab 4)

Visit 5: Insertion






Visit 3: Registration Stage

To determine the form of the upper denture and clear guideline for teeth placements.

To relate the mamndibular arch to the maxillary arch.

To select teeth of appropriate mould

Arch form

Occlusal plan.

Landmarks

Recording the CR: Vertical relation

Recording the CR: Horizontal relation

Selection of the mould & shade

Facebow transfer of the maxillary rim

Facebow transfere


(Lab 1)


Impression

(Lab2 )


(Lab 3)

Visit 4: Try in

(Lab 4)

Visit 5: Insertion






Lab 3

Mounting. (indexing)

Setting the teeth using the shade & mould selected by the dentist.

Wax up and contouring.


(Lab 1)


Impression

(Lab2 )


(Lab 3)

Visit 4: Try in

(Lab 4)

Visit 5: Insertion






Visit 4: Trial denture

Verify the appearance.

Verify the occlusal requirements.

Examine speech


(Lab 1)


Impression

(Lab2 )


(Lab 3)

Visit 4: Try in

(Lab 4)

Visit 5: Insertion






Lab 4

Packing & processing of the denture:

Removal of wax

Replacing the wax mould with PMMA


(Lab 1)


Impression

(Lab2 )


(Lab 3)

Visit 4: Try in

(Lab 4)

Visit 5: Insertion






Visit 5 : Insertion

Mirror those of the trial stage except hopefully the patient is taking the dentures home.

Arrange review visits as needed.

References

Refer to clinic manual for more details .

Refer to references listed in the syllabus and/or in previous courses for more in depth scientific material for each subject

prostho iv - slides 1 - introduction & overview of clinical & laboratory procedures

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