1 prosthodontics intro

8/10/2019 1 Prosthodontics Intro

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Introduction-CHAPTER 1

COMPLETE DENTURE Page 1

Chapter 1

Introduction


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Prosthodontics (Prosthetic Dentistry):It is the dental specialty pertaining to the diagnosis, treatment

planning, rehabilitation and maintenance of the oral function, comfort,

appearance and health of the patients with clinical conditions associated

with missing or deficient teeth and/or maxillofacial tissues using

biocompatible substitute.

Prosthetics:It is the art and science of designing and fitting artificial substitute to replace

lost or missing tissue.

Prosthesis:An artificial appliance which replaces lost or congenitally missing tissue.

Some prosthesis restore both function and appearance of tissue they replace

other merely restore one of these factors. Like:

Denture; An artificial substitute for missing natural teeth and adjacent

tissues.

Dentulous (Dentate)A condition in which natural teeth are present in the mouth.

Edentulous

Without teeth, lacking teeth

Partially edentulous

A condition in which some of the natural teeth are present and some are lost.


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Complete denture prosthodontics:Involves an artificial replacement of the lost natural dentition and associated

structures of the maxilla and mandible for patient who has lost all their

remaining natural teeth.

Complete dentureA removable dental prosthesis that replaces the entire dentition and

associated structures of the maxilla or mandible.

Removable partial denture prosthesis: any prosthesis that replaces someteeth in a partially dentate arch. It can be removed from the mouth and

replaced at will

Denture base:the part of a denture that rests on the foundation tissues and

to which teeth are attached

Denture border: the margin of the denture base at the junction of the

polished surface and the impression surface the peripheral border of a

denture base at the facial, lingual, and posterior limits

Denture flange: the part of the denture base that extends from the cervical

ends of the teeth to the denture border

Labial flange:the portion of the flange of a denture that occupies thelabial vestibule of the mouth

Lingual flange:the portion of the flange of a mandibular denture that

occupies the alveolingual sulcus

Buccal flange:the portion of the flange of a denture that occupies the

buccal vestibule of the mouth


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Complete denture prosthodontics

Types of dental removable prosthesis rather than (Complete dentures and

Removable Partial dentures)

1.

Overdentures

A complete denture supported both by mucosa and by a few remaining

natural teeth that have been altered, as by insertion of a long or short coping,

to permit the denture to fit over them.

2. Immediate dentures

A removable artificial denture that is placed in the mouth immediatelyafter the surgical removal of all remaining teeth at the same

appointment as the tooth extractions to maintain normal appearance and

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

Complete denture

Function of complete denture:

1-Mastication: chew food for swallowing and digestion.2-Speech (phonetics): the teeth either natural or artificial assist the tongue

and lips to form some of the sounds of speech.3-Appearance (aesthetic): is influenced by the shape of jaws together with

the position and occlusal relationship of the teeth.4-Health of the alveolar bone and the temporo-mandibular joints (T.M.J).

5-Patient satisfactory and comfort.

Labial flange

Buccal flange

Lingual


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Changes That Happen After Teeth Loss1. Residual Ridge Resorption (RRR).

2. The mandible becomes closer to the nose (Loss of vertical dimension).

3. Lack of support to the facial muscles.

4. Various Changes in Intraoral Structures

5.

Decreased Masticatory Function6. Potential Psycho-Social Effects

Complete dentures have three surfaces:1-The fitting surface.

2-The occlusal surface.

3-The polished surface.

Denture surfaces

1- Denture impression surface (denture basal surface) Fitting

surface/ Tissue surface.It is that portion of the denture surface which has its contour determined

by the impression.

It includes the borders of the denture and extends to the polished surface

2-

Denture occlusal surfaceThe portion of the denture surface that makes contact with its

antagonist (opposing occlusion).

3-

Denture polished surfaceThat portion of the denture surfaces which extends in an occlusal

direction from the border of the denture and includes the palatal surfaces.

It is part of the denture base which is usually polished and includes the

buccal and lingual surfaces of the teeth.


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General steps in Complete denture fabrication

Clinical laboratory

1. Examination of the mouth.

2. Preliminary impression making. Pouring of impression to obtain

the study cast Construction of special

(custom) trays

3. Final impression. Boxing and pouring of the final

to obtain the mastercast

Construction of recording bases

4. Recording jaw relationships andselection of artificial teeth.

Mounting of the models withocclusal rims on articulator.

Setting-up of teeth and waxing-

up.

5. Try-in of the waxed-up denture. Processing of the dentures

(flasking, wax elimination, packing,

curing, deflasking & polishing

6. Insertion of the finished denture.

7. Post-insertion care.

1 prosthodontics intro

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