diagnosis & treatment planning for removable partial denture · denture history 1-age of...
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Diagnosis
Covert Examination History
Personal History
Mental Attitude
Medical History
Dental History
Definitive Examination
Clinical Examination
Oral Extra Oral
Radiographic Evaluation
Study Casts
Patient interview
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Personal data
Name, age, sex, occupation, address, and telephone number
Positive identification and
communication
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philosophic Exacting
Hysterical Indifferent
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)seeking-TruthPatients(Philosophical
)Demanding Exacting Patients (
Calm --Best mental attitude
Good prognosis
needs great care, effort -Good as philosophical
-&explanations
Good prognosis
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)stricken-PanicHysterical Patients (
)Uncaring ,coolIndifferent Patients (
Excitable -Unstable
Poor prognosis
-depressed -Uninterested
-no cooperation
unfavorable prognosis
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Medical history
Some
dangerous
transmissible
diseases
Some systemic
diseases might
affect the
outline of
treatment
Some other
transmissible
diseases but
not dangerous
Some drugs might
affect the outline
of treatment
1) Jaundice
2) AIDS
3) TB
1) Cardiac
patients
2) Diabetes 3) Osteoporosis
4) Osteo-arthritis
5) Hormonal
disorder
6) Neurologic
disorder
7) Skin disease
1) Influenza
2) Rhinitis
3) Bronchitis
1) Anticoagulants
2) Dilantin Na
3) Meduretics
4) Antihypertensive
drugs
5) Endocrine therapy
6) Saliva inhibiting
drugs
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Dental history
History about loss of teeth: 1-Reasons for extraction 2-Length of time since extraction. 3-Sequence of teeth extraction. 4-Diet & methods of home care. 5- Presence of any Para functional
habits.
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Denture history
1-Age of present denture & dentist evaluation to determine its suitability.
2-Number of previous dentures & degree of patient satisfaction.
3- evaluation of present denture. 4-Reasons for requesting a new denture.
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1
•Extra-oral
examination
2
•Intra-oral
examination
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1. Size of face.
2. Form & contour of face.
(ovoid, rectangular, tapered)
3. Face color & symmetry.
4. Profile ( class I,II, III)
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5. Facial muscle tone, tense or flaccid.
6. Lip length, mobility & support.
7. TMJ examination to detect any abnormalities in jaw relation records
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1- Remaining natural teeth:
A- number & distribution
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B- condition of teeth.
1.Caries involvement:
dent-DIAGNO
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B- condition of teeth.
2. Existing restorations:
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B- condition of teeth. 3. Periodontal involvement:
1. Gingival inflammation
2. Depth of periodontal pocket
3. Degree of gingival recession
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B- condition of teeth.
4.Mobility of teeth: may be due to:
i) Trauma from occlusion
ii) Inflammatory changes
iii) Loss alveolar bone support
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B- condition of teeth. 5.Evaluation of the pulp:
Electric & thermal pulp testing should be used to assess the vitality the remaining teeth either normal, necrosed or pulpitis.
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B- condition of teeth. Evaluation of sensitivity to percussion:
All remaining teeth are tested for sensitivity to percussion. :
-tooth movement by prosthesis or occlusion
-traumatic occlusion
-periapical or pulpal abscess
-acute pulpitis
-gingivitis or periodontitis
-cracked tooth syndrome
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2-The condition of the edentulous area:
1. The form of the edentulous ridge:
2. Oral mucosa:
3. Shape of the vault:
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3-Soft & hard tissue
abnormalities:
Soft tissue
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3-Soft & hard tissue
abnormalities:
Hard tissue: 1. Torus palatinus
2. Torus mandibularis
3. Bony Exostoses
4. Bony undercut
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4-Tissue reaction to wearing a previous prosthesis
1. Palatal papillary hyperplasia
2. Epulis fissuratum
3. denture stomatitis
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5-Evaluation of the quantity
& quality of saliva 6- The tongue: Size & mobility are evaluated. Large tongue with excessive mobility causes great displacing force to RPD.
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7- Occlusion of the natural teeth (static teeth relation): a) Minor occlusal discrepancy:
-Deflective occlusal contact:
centric occlusion is not in the same position as the centric relation.
-Premature occlusal contact:
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7- Occlusion of the natural teeth (static teeth relation):
b) Gross occlusal discrepancy:
The occlusal plane is not uniform due to over eruption of teeth opposite to the edentulous space.
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7- Occlusion of the natural teeth (static teeth relation):
c) Loss of occlusal stops: the mandible closes as if the jaws are
edentulous.
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8- Articulation of the natural teeth (Dynamic teeth relation):
If there is good balance of teeth during centric & excursion movement, the artificial teeth should be set following this pattern by using adjustable articulator & face bow transfer to be in balance with the natural teeth.
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9- Space for mandibular major connector:
If 8 mm space is available from the
free gingival margin to the position of elevated floor of mouth, lingual bar can be used, or you will have to use a lingual plate.
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Evaluation of radiographic survey
Periapical radiographs:
Bite-wing radiographs:
panoramic radiographs:
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The radiographic finding
The presence of hidden caries The relation of the carious lesions to
the dental pulp.
Existing restorations are evaluated to determine their accuracy.
Root fragment, foreign bodies & unerupted third molars are evaluated.
Root canal fillings are evaluated.
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Radiographic evaluation of prospective abutment teeth
1. Root length, size & form:
2. Crown/ root ratio:
3. Lamina Dura:
4. Periodontal ligament space
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Radiographic evaluation of prospective abutment teeth 5. Bone index areas: Positive bone factor
.Normal bone height
Regular trabecular pattern
Heavy cortical layer
Negative bone factor
Loss of lamina dura
loss of bone height
Thin cortical layer
irregular trabecular pattern.
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Evaluation of study casts Purpose for which the study cast are used:
1. Aid in planning the design. 2. To supplement the oral examination by
permitting the view from all directions.
3. To permit primary survey of the study casts.
4. Used to fabricate special tray. 5. Used as a constant reference as the
work progress. 6. Patient education.
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Purpose for which the study cast are used:
7.As a permanent part of patient record
8. Mounted diagnostic casts can provide important information that may be difficult to obtain by intraoral examination alone as:
i) Insufficient interarch distance
ii) Irregular occlusal plane
iii) loss of occlusal stops
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Prescribing the prosthetic service
There are different prosthodontics restorations
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Removable partial denture
Indications:
free end saddle cases. In extensive bone loss in the anterior region. Patient’s desire not to grind his natural teeth.
When a successful long-term prognosis is expected.
When fixed partial denture is not indicated. When cross-arch stabilization is needed.
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Fixed partial denture
Advantages: ◦Preferred by some patients.
◦Fixed.
◦Superior function.
◦Superior esthetic.
◦Minimal bulk.
◦Has splinting effect.
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Fixed partial denture
Disadvantages: ◦High standard of oral hygiene is needed.
◦ Tooth grinding is imperative.
◦More chair-time, more lab-time, more expensive.
◦Difficult to repair & difficult in accepting additions.
◦ The number of teeth that can be replaced is limited.
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Fixed partial denture
Contraindications:
◦Very young patients.
◦Very old patients.
◦Long spans.
◦Free-end saddle.
◦Extensive bone loss in the anterior part of edentulous ridge.
◦Weak abutments.
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Complete upper &/or lower dentures
Indications:
◦Advanced periodontal disease.
◦-Gross extensive caries.
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Over denture Indications: When remaining teeth are few & distant,
e.g. two canines or two molars.
Patients should have good systemic & oral health.
Abutment teeth with healthy periodotium.
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Implant denture
Indications:
◦Patients should have good general, oral & mental health.
◦Healthy periodontium is essential for the remaining natural teeth.
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Leaving the condition as it is
As in:
◦Missing last molar.
◦Narrow edentulous space.
◦Severe periodontal disease.
◦Hysterical patients.
◦Too bad oral hygiene.