1367356631.0618introduction to Pros Presntn

8/12/2019 1367356631.0618introduction to Pros Presntn

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WEL COME


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INTRODUCTIONTO PROSTHODONTICS

Course code;212 sds

COURSE DESCRIPTION AND SPECIFICATION


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Objective of learning prosthodontics???

To treat this patient
http://www.thesmokinggun.com/archive/years/2008/0130081morinmug1.html


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Objectives of todays class;

1. To get familiarized with the contents, guidelines,assessment tools, dos and don'ts in this semester.

2. To know the branches in prosthodontics.

3. To know the basic definitions in prosthodontics.4. To know the basic clinical and laboratory steps

involved in fabricating a complete denture.


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Intended learning outcomes ofthis class

At the end of this class the students should beable to define the basic definitions presented inthis powerpoint.Student should be able to clearly distinguishbetween all the clinical and laboratory stepsinvolved in fabricating a complete denture.Students should know and try to arrange all therequisites including materials, books etc.. neededfor the course -SDS 212.


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Introduction:Prosthodontics (Prosthetic Dentistry);It is the dental specialty pertaining to the

diagnosis, treatment planning, rehabilitation andmaintenance of the oral function, comfort,appearance and health of the patients withclinical conditions associated with missing ordeficient teeth and / or maxillofacial tissues usingbiocompatible substitute.


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This is the first course in prosthodontics.It consists of didactic and practical components.

It has two parts:The first part is introductory to prosthodontics in theform of lectures.

The second is the practical components covering someof the basic technical aspects in removableprosthodontics.The laboratory phase of this course is a coordinatedeffort in building and improving the basic technical skillsin prosthodontics and occlusion.


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Course Objectives:1.The primary goal of this course is to familiarize

the student with the biological and technicalaspects of prosthodontics in general andanatomical landmarks for complete dentureprosthodontics.

2. The student should demonstrate the ability tounderstand and use different prosthodonticterminologies.


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3. Describe basic principles and techniques of

Prosthodontic restoration of oral functions.4. Describe fundamentals of normal /abnormal occlusion

based on examination and analysis of occlusion invarious functions.

5. Perform basic Prosthodontic lab procedures necessaryto attain standard Prosthodontics dental care.

6. Identify and perform basic techniques of prostheticcare follow up and repair.


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Course laboratory contents1. Anatomical landmarks of the maxilla and mandible.2. Primary impression and pouring of the primary cast.3. Special tray.

4. Final impression, Boxing & pouring (demonstration).5. Relief and Post dam.6. Construction of record rims and acrylic bases.


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7. Articulators, face bow and mounting(demonstration).

8. Setting of upper anterior teeth.9. Setting of upper posterior teeth.10. Waxing up of trial denture base.11. Flasking and wax elimination (demonstration).12. Packing and curing (demonstration).

13. Finishing and polishing (demonstration).


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All the students should be evaluated in eachlaboratory session according to the recommendedlaboratory step by the course director andinstructor.

All the students should pass all the requiredlaboratory steps successfully and this will be gradedas an overall grade for the course which enablesthe student to join the next level (pre-clinicalprosthodontic course).


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Precautions1. All the students should have the necessary

tools every lab session which includesDiagnostic instruments; Mouth mirror, Probes,explorer, tweezer. (3 no.each)Machintosh sheet- (2 no.) 1meterRubber bowl [flexible & rigid] 2 each-(2 no.)

Straight spatula-(2 no.)Curved spatula-(2 no.)Lacron carver-(2 no.)


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Plaster knifeGlass slab-(2 no.)

Glass plate-(2 no.)TileSpirit lamp

Blow torchHot spatulaWax spatula-(2 no.)Wax knifeMean value articulator-(2 no.)Cement mixing spatula[small and long] -(2 no.)


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Impression tray set;N0.0,1,2,3,4 [perforated and nonperforated for dentulous and edentulous patient]

Wooden hammerMetal fileMetal Flask and clamp

Dappen dish (2 No.) Acrylic finishing stone (black, pink, white various sizeand shapes for acrylic trimming)Carbide metal trimmer(flame, round and coneshaped)Straight fissure carbide bur for straight hand pieceMicromotor with straight and contra-angle hand piece


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2. It is preferable to protect your eyes with protectiveglasses while you are trimming the special trays or trial

denture bases.3. It is preferable to put on your face masks.4. Never throw hard plaster mix, alginate or remnants of

self cured acrylic resin in water sinks.

5. Be sure that you closed the gas valves after finishingyour work, if you suspect any gas leakage; report itdirectly to your supervisor.

6. Any questions should be referred to the instructors orcourse director.

7. Keep the lab clean whenever you finish your work.


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BRANCHES IN PROSTHODONTICS

Implantology


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Prosthodontics (Prosthetic Dentistry)

Definition ; It is the dental specialty pertaining tothe diagnosis, treatment planning, rehabilitation andmaintenance of the oral function, comfort, appearanceand health of the patients with clinical conditions

associated with missing or deficient teeth and / ormaxillofacial tissues using biocompatible substitute.Prosthetics: is the art and science of designing andfitting artificial substitute to replace lost or missing

tissue.Prosthodontist

A specialist in prosthodontics


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Prosthesis: an artificial appliance which replace lost orcongenitally missing tissue. Some prosthesis restore

both function and appearance of tissue they replaceother merely restore one of these factors.

Eg; Denture; An artificial substitute for missing naturalteeth and adjacent tissues.


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Complete denture prosthodontics:involves an artificial replacement of the lost natural

dentition and associated structures of the maxillaand mandible for patient who has lost all theirremaining natural teeth.

Complete denture A removable dental prosthesis that replaces theentire dentition and associated structures of themaxilla or mandible.
http://images.google.com/imgres?imgurl=http://www.nature.com/bdj/journal/v189/n2/images/4800686f8.jpg&imgrefurl=http://www.nature.com/bdj/journal/v189/n2/fig_tab/4800686f8.htm&usg=__rnJZaeAJz7g0nxNv948w-bF2g54=&h=251&w=400&sz=22&hl=en&start=1&tbnid=mOZKyZ9KvknyLM:&tbnh=78&tbnw=124&prev=/images%3Fq%3Dcomplete%2Bdenture%26gbv%3D2%26hl%3Den%26sa%3DG


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Complete denture prosthodonticsDentulous

A condition in which natural teeth are present inthe mouth.


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Edentulous A condition in which the mouth is without teeth.


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Partially edentulous A condition in which some of the natural teeth arepresent and some are lost.

Before restoration After restoration


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Types of dental removable prosthesis1. Complete dentures


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Partial dentures

Acrylic base metall ic base


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3. Overdentures A complete denture supported both by mucosaand by a few remaining natural teeth that havebeen altered, as by insertion of a long or short coping,to permit the denture to fit over them.


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4. Immediate dentures A removable artificial denture that is placed in themouth immediately after the surgical removal of allremaining teeth at the same appointment as thetooth extractions to maintain normal appearance and

the ability to chew food. It may be complete or partial.


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Complete dentures have threesurfaces:

1- The fitting surface.2- The occlusal surface.3- The polished surface.
http://images.google.com/imgres?imgurl=http://www.jancobbledds.com/images/full-dentures-1.jpg&imgrefurl=http://www.jancobbledds.com/sep/tulsa-dentures-1.htm&usg=__NfRPiyvqxHg_iCbT2Dwpz_kZ-TQ=&h=170&w=263&sz=7&hl=en&start=9&tbnid=0vHxHGR2oH_m5M:&tbnh=72&tbnw=112&prev=/images%3Fq%3Dcomplete%2Bdenture%26gbv%3D2%26hl%3Den%26sa%3DG


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Denture surfacesDenture impression surface (denture basal surface) It is that portion of the denture surface which has itscontour determined by the impression.It includes the borders of the denture and extends to thepolished surface


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Denture polished surface That portion of the denture surface which extends in an

occlusal direction from the border of the denture andincludes the palatal surface. It is part of the denturebase which is usually polished and includes thebuccal and lingual surfaces of the teeth.


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Cli i l d l b f


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Clinical and laboratory steps ofcomplete denture construction

Clinical laboratory

1. Examination of the mouth.

2. Preliminary impression making. Pouring of impression to obtain theConstruction of special (custom)trays

3. Final impression. Boxing and pouring of the finalConstruction of recording bases4. Recording jaw relationshipsand selection of artificial teeth.

Mounting of the models withocclusal rims on articulator.setting-up of teeth and waxing-up.

5. Try-in of the waxed-updenture. Processing of the dentures(flasking, wax elimination, packing,curing, deflasking & polishing

6. Insertion of the finisheddenture.7. Post-insertion care.


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Step by step detailed description.1. Primary impression


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2. Study casts (primary cast)


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3. Special trays


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4. Border molding


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5. Secondary impression


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6. Boxing


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7. Pouring master cast (Secondary cast)


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8. Construction of occlusion blocks


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9. Face bow recordings


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10. Mounting of the maxillary cast

11 D t i i th ti l


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11. Determining the verticaldimension of occlusion


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12. Centric relation registration

13 M ti g f th dib l


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13. Mounting of the mandibularcast on the articulator


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14. Setting and waxing-up of teeth


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15. Try-in


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16. Finalizing the wax-up


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17. Flasking

18 Boiling out wax and removing


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18. Boiling out wax and removingdenture bases


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19. Packing and curing acrylic resin

20 Remounting to adjust


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20. Remounting to adjustprocessing errors

Remounting index

21 Removal from casts finishing


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21. Removal from casts, finishingand polishing


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22. Adjusting occlusion


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23. Delivery to the patients


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Function of complete denture:1- Mastication: chew food for swallowing anddigestion.2- Speech (phonetics): the teeth either natural

or artificial assist the tongue and lips to formsome of the sounds of speech.

3- Appearance (aesthetic): is influence by theshape of jaws together with the position andocclusal relation ship of the teeth.

4- Health of the alveolar bone and the tempro-mandibular joints (T.M.J).


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Assignment Answer the following questions.

1. Learn and write all the definitions of this chapter.2. List the clinical and laboratory steps for the

fabrication of complete denture.Note;1. Maintain a separate long exercise book for writing

assignments.[no student should write it in paper].2. Assignment should be submitted before the next

theory class otherwise it will be considered as notsubmitted and the marks alloted for assignments willbe deduced.


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hank You

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