Dr Ghazy 2013_2014 Fixed Prosthodontics Introduction

Dr Mohamed Hamed Ghazy

Email:mghazy@mans.edu.eg

mghazy2002@yahoo.com

mghazy@mans.edu.eg

Class of 2013/ 2014

Septemper22, 2013

Presented by

Dr. Mohamed Hamed Ghazy Professor of Fixed Prosthodontics

Email mghazy@mans.edu.eg

mghazy@mans.edu.eg

Faculty of Dentistry

Conservative Dentistry Department

Head of Department

Dr. Salah Al danf Fixed Prosthodontics Staff members

Dr. Mohamed Ghazy.

Dr. Ahmed Attia.

Dr. Manal Aboumadina.

Dr Shymaa Aboualfarag

mghazy@mans.edu.eg

Crowns& Bridges Course 2013/ 2014

Will run over 2 semesters, including:

A series of lectures

Practical work including demos and Lab work in fixed prosthetics lab.

No clinical work, yet!

Final practical work 30 Degree

Oral exam 15 Degree

Half term exam + preclinical requirements 15 Degree

A final end of the year qualifying paper 60 Degree

mghazy@mans.edu.eg

Prosthodontics The dental specialty concerned with the making of artificial replacements for missing parts of the mouth and jaw. Called also Prosthetic dentistry or Prosthodontia.

Fixed Prosthodontics

The branch of Prosthodontics that concerned with replacement and/ or restoration of teeth by artificial substitutes that are not readily removed by the patient from the mouth

mghazy@mamns.edu.eg

Implant Prosthodontics

That phase of

prosthodontics concerning

the replacement of missing

teeth and/ or associate

structures by restorations

that are attached to dental

implants.

mghazy@mans.edu.eg

Clinical crown The portion of tooth that

extended from the occlusal table or incisal edge to the free gingival margin.

Anatomical crown The portion of tooth that

extended from the occlusal table or incisal edge to cemento - enamel junction.

Artificial crown Artificial replacement that restore

missing tooth structure by surrounding part or all of the remaining tooth with a material such as metal, ceramic or combination.

CEMENTUM

GINGIVA

ENAMEL

A crown is an artificial replacement that

restores missing tooth structure by surrounding most or all of the remaining structure

with a material such as cast metal or ceramic or combination.

It is intended to reproduce both the form and function of the tooth and in some instance to restore

or enhance the appearance

Temporary Crown: It is a crown made and used temporarily for the protection of the prepared tooth till the final crown or bridge is completed and ready for cementation.

mghazy@mans.edu.eg

The restoration material may be metal,

ceramic or combination

Complete (Full) veneer crown

A restoration that covers all of the tooth clinical crown surfaces (mesial , distal, facial, lingual and occlusal).

Full veneer gold crown Metal ceramic crown

mghazy@mans.edu.eg

Partial veneer crown: Extra-coronal cast metallic restorations that covers portion of prepared clinical crown: e.g. ¾ crowns 7/8 crowns ½ crowns Pin ledge crowns

mghazy@mans.edu.eg

Three Quarter Crowns:

Restore the occlusal and three

of the four axial surfaces not

including the facial surface.

Reverse Three Quarter

Crowns:

Restore all surfaces except the

lingual surface.

Seven- Eights Crown:

Is a modified type of the three

quarter crown extend to include a

portion of the facial surface,

except the mesial half of the

buccal surface of maxillary molars

mghazy@mans.edu.eg

One – half crown:

Restore the occlusal and mesial

surface, as well as portion of the lingual

and buccal surfaces. It is a modified form

of the three quarter crown.

MacBoyle retainer : Is a modified type of the three quarter

crown, with its retention derived from

grooves at the labio- proximal line

angles usually used for mandibular

anterior incisors.

Pinledge retainer: Is a modified type of an anterior

three quarter crown that obtain its

retention from long parallel pins in the

lingual or palatal surfaces of the clinical

crown. mghazy2002@yahoo.com

Laminates Are veneer restoration that

restore the facial surface of the

tooth for esthetic purposes.

They are fabricated from resin or

dental ceramic. They are bonded

to etched enamel with resin

cement.

Resin- bonded restoration : it is a cast partial veneer

restoration that are bonded to

etched enamel.

mghazy@mans.edu.eg

Inlay retainer:

It is a classical

intracoronal restoration that

restore the proximal and

occlusal surfaces but does

not protect or cover the

cusps entirely.

Onlay retainer:

It is a modification of the

inlay with cusps overlays on

the occlusal surface to

protect the integrity of the

remaining tooth structure.

Classification of crowns Full coverage Partial coverage

Grooves

Pins, pin-ledge retainer

Enclsping the preparation

Encircling the preparation

Combined

Metallic

Combined

Non metallic

One piece

Tow piece

veneered

Full veneered

Porcelain

Acrylic

Posts in the root canal

Retained by posts or post &core

Posterior post attached or detached

Materiall mettalic, ceramic or combined

¾ crown

1/2 crown

7/8 crown

MacBoyle crown

mghazy@mans.edu.eg

Classification of crowns according to material

According to material

Metallic

Non metallic

Combined mghazy@mans.edu.eg

According to site

Classification of crowns

mghazy@mans.edu.eg

Abutment

Is a natural tooth or portion of tooth, or dental implant that supports and/or retains a prosthesis.

Fixed dental prosthesis {bridge}

A partial denture that is luted or otherwise securely retained to the natural teeth, tooth roots, and/ or dental implant abutments that furnish the primary support for the prosthesis.

mghazy@mans.edu.eg

Fixed dental prosthesis {bridge} A partial denture that is luted or otherwise securely retained to the natural teeth, tooth roots, and/ or dental implant abutments that furnish the primary support for the prosthesis. Retainer

The part of Fixed dental prosthesis that units the abutment {s} to the remainder of the restoration.

Connector

A portion of Fixed dental prosthesis that units the retainer {s} to the pontic.

Pontic

An artificial tooth on a Fixed dental prosthesis that replaces a missing natural tooth, restore its functions, and usually fill the space previously filled by the natural crown.

mghazy@mans.edu.eg

Fixed dental prosthesis (FPD)

= “Bridge” = “Fixed prosthesis”

Pontic = replaces lost tooth

Retainers fit over prepared teeth

mghazy@mans.edu.eg

Classification of Fixed dental prosthesis

According to site

Complex

mghazy@mans.edu.eg

Classification of Fixed dental prosthesis

According to material

Metallic

Non metallic

Combined mghazy2002@yahoo.com

Classification of Fixed dental prosthesis According to mode of retention Fixed – fixed

Fixed- supported

Removable bridge

Cantilever bridge

Spring cantilever

Resin bonded FPD

Implant supported

mghazy@mans.edu.eg

1- Fixed- Fixed bridge:

It is a bridge where the

abutments and the pontics are all

soldered together and the bridge is cemented at both ends to the

abutments.

2- Fixed- supported

bridge:

It is a bridge which is not

actually joined to one of the

terminal abutment teeth but is connected to it by means of a

non rigid connector allowing

some individual movement of the abutment tooth.

mghazy@mans.edu.eg

Removable bridge:

It is a bridge where each retainer consists of two parts.

One fixed to the abutment tooth.

And one soldered to the pontic and the bridge can be

removed at the will of and by the patient for cleansing

purposes.

mghazy@mans.edu.eg

Cantilever bridge:

It is a bridge where the pontic is fixed to and derives its

support from one or double

retainers at one end only while the other end is

unsupported.

Spring Cantilever Bridge:

It is a cantilever bridge where

the pontic is at the end of resilient curved arm deriving

its support from an abutment

remote from the edentulous space

mghazy@mans.edu.eg

Placement of the implant. Gum tissue sutured over the implant. It will take 4 -6

months for the implant to fuse with the bone

Temporary crown boned to adjacent teeth during the healing

phase.

mghazy@mans.edu.eg

Dental material used in fixed Prosthodontics

Direct restorative filling

– Amalgam

– glass ionomer

– Composite

– Compomer

Impression materials

– Irreversible hydrocolloids

(alginate)

– Reversible hydrocolloids (agar agar)

– Rubber base impression

material

Polysulfide

Polyvinylsiloxane

Poly ether

Material used for

laboratory procedures

– Gypsum product

– Wax

– Custom tray material

Cements

– Zinc phosphate

– Glass-ionomer

– Composite resin

Material used for extra

coronal restoration

– Direct casting alloys

– Ceramic

– Polymer acrylic

Extra coronal restorations

Full coverage

Partial coverage

Intra coronal restoration

Direct filling materials

Amalgam

Composite

Glass ionomer

Compomer

Inlays and onlays

Ceramic

Porcelain laminate veneer mghazy@mans.edu.eg

Prosthodontic Motto

I hear, I forget

I see, I remember

I touch, I understand Chinese Proverb

Class of 2013/ 2014

September29,2013

Presented by

Dr. Mohamed H. Ghazy Professor of Fixed Prosthodontics

Email mghazy@mans.edu.eg

ANY QUESTIONS

about the last lecture? Text Book and Readings

•Contemporary Fixed Prosthodontics

–SF Rosenstiel, MF Land , J Fujimoto

•Fixed prosthodontics notes

–Cairo university

Student message

• Please DR Mohamed .. can you tell me what is an inlay-onlay restoration? ... i read it consists of both inlay and onlay .. but i can't imagine it ... Thanks a lot Dr Mohamed

Inlays and Onlays

A tooth with a large filling (left)

before preparation for onlay and a

tooth with a slightly smaller filling

(right) before preparation for an

inlay.

A tooth with a large filling (left)

after preparation for onlay and a

tooth with a slightly smaller

filling (right) after preparation

for an inlay.

The onlay and inlay are

prepared on a plaster model

of the teeth.

The onlay and inlay have been fitted. The onlay covers more than the inlay.

mghazy@mans.edu.eg

Purpose of Prosthodontics

Improve appearance

Improve speech

Promote good oral hygiene

Stabilize arch and occlusion

mghazy@mans.edu.eg

Crown Fabrication

1. Tooth Preparation, Including Build-Up

2. Impression

3. Temporization

4. Model (Cast) and Die Fabrication

5. Wax-Up

6. Investing and Casting

7. Crown Adjusting and Polishing

8. Clinical Try-In and Cementation

mghazy@mans.edu.eg

Tooth Preparations mghazy@mans.edu.eg

Partial veneer crown Preparations

mghazy@mans.edu.eg

Teeth Preparations for fixed dental prosthesis mghazy@mans.edu.eg

Build-Ups

Pin Retained

Preformed Posts

Custom Cast Post and Core

Build-Ups Pin Retained

mghazy2ymans.edu.eg

Build-Ups Preformed Posts

mghazy@mans.edu.eg

Build-Ups Custom Cast Post and Core

mghazy@mans.edu.eg

Temporaries Custom made

acrylic

Relined polycarbonate crowns

Preformed metal crowns

mghazy@mans.edu.eg

Impressions Full arch

impressions

Double bite impressions

Model (Cast) and Die Fabrication

Restorations

mghazy@mans.edu.eg

mghazy2002@yahoo.com mghazy2002@yahoo.com

mghazy@mans.edu.eg

Pouring the impression with Gypsum

Products

Proportion P and L

Transfer to impression

Microstone

mghazy@mans.edu.eg

GYPSUM PRODUCTS: • Plaster • Stone, Cast Stone

• Improved Stone, Die Stone

Specialty Stones

Investment Materials

Edentulous Cast

Orthodontic Model

Working Cast

Working Cast with Removable Dies

Removable Die with Waxed Inlay

mghazy@mans.edu.eg mghazy@mans.edu.eg

mghazy@mans.edu.eg mghazy2002@yahoo.com

Overview of INDIRECT RESTORATIONS

• Impressions

• Models/Casts

• Waxing

• Investing

• Casting

• Finishing/Polishing

• Cementing

mghazy2002@yahoo.com mghazy@mans.edu.eg

The metal ceramic restoration tried on the master cast

PFM FABRICATION

"Each time you are honest and conduct yourself with honesty, a success force will drive you toward greater

success. Each time you

lie, even with a little white lie, there are strong forces pushing you toward failure."

Dr Ghazy 2013_2014 Fixed Prosthodontics Introduction

final crown

temporary crown

eights crown

anatomical crown

partial veneer crown

portion of tooth

mohamed ghazy

prepared tooth

Documents

2013_2014 Dr Ghazy Instruments and Equipments 2nd Lecture

INTRODUCTION TO PROSTHODONTICS INTRODUCTION TO...

Draft kurikulum 2013_2014

MANUALETTO 2013_2014

2016 dr ghazy handout of principles of tooth preparations

RAB MOPD 2013_2014

Boletim informativo1 2013_2014

Lbas jauniesi2012 2013_2014

Info HSKS 2013_2014

ANTOLOGÍA LITERARIOS 2013_2014

Estudio 2013_2014

lameness (equine hoof affections) Dr. Alaa Ghazy

1 - Apicoltura_Introduzione 2013_2014

Dr.mohamed Rabee Ghazy

Saisonmagazin 2013_2014

Dr Ghazy 2013_2014 Fixed Prosthodontics Introduction