Lecture outline: Introduction to the course. Alginate impression and diagnostic casts



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LECTURE OUTLINE:

1.      Introduction to the course. Alginate impression and diagnostic casts.

        Definition of an impression

        Types of impression materials

        Setting reaction of alginate impression material

        Types of alginate impression materials (regular-and fast-setting material) and their properties (working, mixing time and setting)

        Definition of a diagnostic cast

        Types of materials used for pouring a diagnostic cast

        Setting reaction 

      Reference: Restorative Dental Materials by Robert G. Craig. C.V. Mosby; 11th    

                        edition (July 26, 2001)



2.      Introduction to Fixed Prosthodontics. (pp. 1- 9)

        Definition of Fixed Prosthodontics

        Terminology and concepts

        Classification of Fixed Partial Dentures

        Components of Fixed Partial Denture

Additional Reference: Glossary of Prosthodontic Terms- GPT#8

3.      Fundamentals of Occlusion & Articulators. ( pp. 11-33 & 54-55)

        Centric relation

        Mandibular movements

        Determinants of mandibular movements

        Effects of anatomical determinant

        Definition & Importance of anterior guidance

        Interrelation with vertical and horizontal overlap of anterior teeth

        Influence on posterior tooth morphology

        Steps in the fabrication of custom anterior guide table

        Arcon vs non-arcon (eg. Whipmix & Hanau)

        Facebow

o       Arbitrary

o       Kinematic

        Registration of condylar movement



4.     Treatment planning for the replacement of missing teeth. (pp. 85-102)

        Options of treatment including dental implants

        Selection of type of prosthesis

-         Abutment evaluation

-         Crown root ratio/ Root configuration

-         Periodontal ligament area

        Biomechanical considerations

        Special Problems and management

-         Pier abutments

-         Treated molar abutments

-         Canine replacement FPD

-         Cantilever FPD 

5.      Principles of tooth preparation. (pp.119-133)

        Preservation of tooth structure

        Retention and resistance (taper, freedom of displacement, length, substitution of internal features and path of insertion).

        Structural durability (occlusal reduction, functional cusp bevel & axial reduction).

        Marginal integrity (finish line configuration)

        Preservation of the periodontium

      Preparations for full veneer crowns.

        Indications

        Advantages/disadvantages

        Tooth preparation procedure



6.      Retention and resistance and its theoretical and practical attainment. (pp. 119-125)

        Taper and length

        Freedom of displacement

        Substitution of internal features

        Path of insertion

7.      Metal ceramic crown preparation. (pp. 142-151)

        Definition of metal ceramic crown

        Advantages

        Indication and contraindication

         Steps in the preparation of anterior and posterior metal ceramic crown

         Types of facial finish margin used in metal ceramic crown preparation



8.      Introduction to ceramics and metal ceramic restorations. (pp.455-456)

        History of metal ceramic restorations

        Composition of porcelain

        Different layers of porcelain

        Bonding mechanisms of ceramic to alloy

 

9.      All ceramic crowns. (pp. 151-153)

        Introduction to all ceramic

        crowns

        Advantages and disadvantages

        Different types of all-ceramic crowns

        Indications and contra-indications

        Steps in the preparation of all ceramic crown



10.  Impressions. (pp. 281-304)

        Definition

        Ideal requirements of a good impression

        Comparison of impression materials

        Advantages and disadvantages of the commonly used impression materials in fixed prosthodontics

        Custom tray fabrication

        Procedure for impression making (different techniques i.e. custom tray and putty wash impression techniques)

        Disinfection of impressions



11.  Fabrication of a working cast and dies. (pp.309-333)

        Requirements for a good cast

        Definition of a working cast and a die

        Basic working cast and die systems



(1)   Working cast with a separate die:

-         Advantages/disadvantages

-         Techniques (procedure)

(2)   Working cast with a removable die:

-         Advantages/disadvantages

-         Requirements

-         Different systems and techniques (procedures)

(3)   Preparation of a die:

-         Die-trimming  procedure

-         Die-spacer application

 

12.  Waxing patterns. (pp. 335-353)

        Direct technique/indirect technique

        Wax pattern fabrication



i.     coping

ii.   axial contour and emergence profile

iii. occlusal morphology

a.   cusp to marginal arrangement

b.   cusp to fossa arrangement

iv. Marginal finishing 

13. Wax-up procedure, cut-back and framework design for metal ceramic restoration. (pp. 457-468 & 502-506)

     Significance of wax-up to full

     contours followed by cut-back

     Coping design for single restoration and FPD

        All wax technique

        Plastic shell technique

 

14.  Investing and Casting. (pp.365-382)

      Requirements of an investment

      material

        Gypsum bonded investment

        Phosphate bonded investment

        Shrinkage compensation

      Sprue former attachment (diameter, length & location)

        Investing procedure

        Cleaning of casting

        Common casting defects and their causes



15.  Preparation for porcelain Laminate veneers. (pp. 441-445)

        Introduction to all types of partial veneer crown preparation

        Indications/Contraindications

        Advantages/Disadvantages

        Materials and equipments

        Tooth preparation procedure

        Fabrication of provisional restoration 

16. Preparation of metal coping for porcelain application. (pp. 468-470)

           Rationale of preparation

           Alloy surface treatment

           Heat treatment

           Steps of preparation     

17.  Porcelain application, staining, glazing and polishing of metal ceramic restoration. (pp.471- 481)

      Procedure of porcelain application



a)           Opaque porcelain application

b)           All-porcelain margin fabrication

c)            Dentin and enamel porcelain application

        Characterization of staining (external stains)

        Porcelain surface treatment

a)         Natural glaze or autoglaze

b)         Applied overglaze

c)          Polishing                      

18. Alloys used in fabricating metal ceramic restoration. (pp. 456-457).        

     Chemistry of metal ceramic alloy

     Terminology and classification

     Requirements of alloys for porcelain bonding

     Bonding mechanism

     Chemistry of bonding

     Porcelain metal bond failure

 Additional Reference:  (pp. 225-236) Dental Materials & their Selection by William O'Brien. Quintessence Publishing (IL); 3rd edition (June 2002) 



19.  Fitting, finishing and delivery of cast restorations. (pp.385-400)

        Significance of finishing and polishing cast restorations

        Armamentarium: Different abrasives and polishing

        Procedure of preliminary finishing of metal restorations in sequence (Try-in)



i.        Proximal contacts

ii.      Margins (completeness of seating)

iii.    Occlusion

iv.    Contours

v.      Esthetics

       List the different types of cements used for final cementation of cast restoration.

       Pre-cementation polishing of gold

       restorations

       Post-cementation finishing of gold restorations

20.  Direct provisional restorations. (pp. 247-255)

     Indication

     Types of pre-fabricated direct restoration for anterior and posterior teeth

     Techniques of using pre-fabricated provisional restoration for anterior and posterior teeth

     Fabrication of direct provisional restoration for an endodontically treated tooth

21.  Provisional restorations. (pp.225-238)

        Definition

        Ideal requirements of a good provisional restorations

        Types of provisional restorations prefabricated vs. custom restorations

        Direct/Indirect/Combination techniques

-         Advantages

-         Disadvantages

        Resins for provisional restorations

        Techniques for fabricating custom made provisional  restorations (FPD)

        Cementation 



22.  Pontic Design. (pp. 485-506)

        Definition       

        Different pontic designs

        Pontic modification

        Pontic fabrication

(a)   An all metal mandibular posterior FPD with a hygienic/conical pontic

(b)   A metal-ceramic maxillary posterior FPD with a modified ridge lap pontic

        Post-insertion hygiene 



23.  Resin bonded fixed partial dentures. (pp. 537- 561)

        Definition of Resin bonded fixed partial dentures

        Advantages and disadvantages

        Indication and contraindication

        Steps in the preparation of Resin bonded fixed partial dentures 

24.  Solder joints and other connectors. (pp. 509-530)

           Definition

           Ideal requirements of dental solder

           Uses of dental solder

           Procedure of:

-         Soldering a fixed partial denture

-         Adding proximal contacts

-         Soldering metal ceramic alloys

i.        Pre-veneer metal ceramic alloy soldering

ii.      Post-veneer metal ceramic alloy soldering 

25.  Restoration of endodontically treated teeth. Part I. (pp. 194-201)

       Rationale of restoring endodontically treated tooth

       Pre-fabricated dowel with amalgam and resin core

       Esthetic posts

       Fiber post with composite build up

26.   Restoration of endodontically treated teeth. Part II. (pp. 202-206)

         Parapost system - different

         components and its uses

         Custom cast dowel cores

         (direct/indirect)

         Procedure for preparation of custom dowel core



i.        Canal preparation

ii.      Resin pattern fabrication

iii.    Finishing and cementation of the custom dowel core 

27.  Preparation of extensively damaged vital teeth. (pp. 181-193)

        Principles of substitution



-         Box forms

-         Grooves

-         Pins

        Bases and cores

        Modifications for damaged vital teeth

        Orthodontic adjuncts to restoring damaged teeth



-         Regaining interproximal space

-         Extrusion of teeth


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