Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
GUIDED BY:
Dr.FAYAZ PASHA

PRESENTED BY:
Dr.SOUMYADEV SATPATHY
POST GRADUATE STUDENT
DEPARTMENT OF PROSTHODONTICS,
V.S.DEN...
•
•
•

•

•
•

Introduction
Definitions
Diagnostic aids
– Personal information
– Patient evaluation
– Medical history
– Pa...


Successful management of cases begin with a
thorough assessment of the patient’s physical and
psychological condition a...
Resorption of residual alveolar ridges
 Occlusal disharmony
 Tilting of teeth
 Drifting of teeth


4


DIAGNOSIS



The determination of the nature of a disease.
(Glossary of Prosthodontic terms 8)



TREATMENT PLAN



...
 HISTORY
 TMJ & EXTRAORAL EVALUATION
 INTRA ORAL EXAMINATION
 DIAGNOSTIC CASTS
 RADIOGRAPHIC EXAMINATION

6
All pertinent information concerning the reasons seeking
treatment , along with any personal information, including
releva...
o
o

o
o
o

Diagnosis & treatment planning depends upon
accurate data collection & record maintenance.
Information collect...
o

Address:

o

Telephone. No:

o

Family history:

o

Socio-economic status :

o

Physician tel.ph.no:

12/09/13

9
The accuracy and significance of the patient’s primary reason
or reasons for seeking treatment should be analyzed first

F...
Accurate and current general medical
history should include


Medication.



As well as relevant medical conditions.


...
.

12
.



Information about missing teeth
and any complications that may
have occurred during tooth
removal
is
obtained.



S...
PERIODONTAL HISTORY


The patients oral hygiene is assessed,
current plaque control measures are
discussed, as are previo...


Simple composites resin
or dental amalgam
fillings or may involve
crowns and extensive
fixed partial dentures.



The ...
The findings should be reviewed periodically so that periapical health can be monitored, any recurring lesions
promptly de...


Occlusal analysis should be an integral part of the
assessment of a post orthodontic dentition.



If restorative trea...


The patients experiences
with removable prostheses
must be carefully evaluated.



Listening to the patients
comments ...


Previous radiographs may prove
helpful in judging the progress of
dental disease.



They should be obtained if possib...
A history of pain or clicking in
the TMJ or neuromuscular
systems, such as tenderness to
palpation, may be due to TMJ
DYSF...
An examination
consist of the
clinician’s use of sight,
touch , and hearing to
detect conditions
outside the normal
range....


General appearance:
Gait and weight are
assessed.



Skin color : Anemia or
jaundice.



Vital signs: Respiration,
pu...


FACIAL ASYMMETRY



CERVICAL LYMPHNODES



TMJ



MUSCLS OF MASTICATION
(palpated)

23


Permits a comparison between the
relative timing of left and right condylar
movements during the opening stroke.



AS...


Tenderness or pain on movement, is
noted and can be indicative of
inflammatory changes in the
retrodiscal tissues ,whic...
Mouth opening



Average opening >50mm



Restricted opening<35mm
(intracapsular changes in the
joints)



Midline devi...


MASSETER ,TEMPORAL
MUSCLES and other POSTURAL
MUSCLES are palpated for signs of
tenderness.



Bilaterally and simulta...
28
29
The sites should be numbered
and

graded

discomfort
neuromuscular

for
so

pain

and

that,

If

or

TMJ

treatment is in...


Visibility during normal and
exaggerated smiling.



This can be critical during FIXED
PROSTHODONTIC TREATMENT
PLANNIN...


Condition of the soft
tissues , teeth and
supporting structures.



This information can be
properly evaluated during
...


Status of bacterial
accumulation



The response of the host
tissues and the degree of
irreversible damage.



Long t...
An accurate charting of the
state of the dentition will
reveal important information
about the condition of the
teeth

and...
The initial clinical examination
starts with the clinician asking the
patient to make a few simple opening
and closing mov...


RADIOGRAPHS



VITALITY TEST



DIAGNOSTIC CASTS



PERIODONTAL PROBE.

36
Provides supplement information to clinical information
 Extent of bone support
 Root morphology
 Peri apical pathology...
Presence or absence of
teeth
Assessing third molars
impactions,
Evaluating the bone
before implant placement.
Screening ed...
For assessement of TMJ disorders, More
information can be obtained from
Tomography
Arthrography
C T scanning
Magnetic reso...
Pulpal health must be
measured before restorative
treatment to


PERCUSSION and



THERMAL STIMULATION



TEST CAVITY-n...
VITALITY TEST asses only
afferent Nerve supply.
MISDIAGNOSIS occurs if N S
is damaged and blood supply
intact .
Careful in...


Not all the patients seeking fixed
prosthodontic treatment will
present diagnostic problems.



Nevertheless ,diagnost...


The prognosis is an estimation
of the likely course of a disease.



It is difficult to make , but its
importance to p...


GENERAL FACTORS (age of patient, lowered resistance of
the oral environment)



LOCAL FACTORS (Forces applied to a giv...


A life size reproduction of the
parts of the oral cavity and or
facial structures for the purpose
of study and treatmen...
46


SEMIADJUSTABLE ARTICULATOR with a FACE BOW TRANSFER.

Articulated diagnostic casts permits a detailed analysis of occlu...


CENTRIC RELATION RECORDS
are used to replicate on the
articulator.



LATERAL OCCLUSAL
RECORDS are used to the
condyla...


The attachment of casts to an articulator for diagnosis will
be done with the condyles in the centric relation position...


Mouth preparation refers to
the dental procedure that need
to be accomplished before
fixed prosthodontics can be
proper...


Relief of symptoms (chief complaint)



Removal of etiological factors (eg; excavation of caries
removal of deposits)
...


The following list describes the sequence in the treatment
of a patient with extensive dental disease including
missing...


Preliminary assessment



Emergency treatment of presenting symptoms



Oral surgery



caries control and replaceme...


Orthodontic treatment



Definitive occlusal treatment



Fixed prosthodontics



Removable prosthodontics



Follo...
The selection of the material and design
of the restoration depends on several
factors:

DESTRUCTION OF THE
TOOTH STRUCTU...
The destruction previously suffered
by the tooth has to be restored , such
that the remaining tooth structure
must gain st...


PARTIAL VENEER restoration can be used to restore in highly visible
area.



The use of ceramic in some can be used as...
ALL CERAMIC CROWNS



commonly used on anteriors



posteriors (adequate bulk)

58


Motivated to follow a regime of
brushing,

flossing

and

dietary

regulation to control or eliminate the
disease

proc...






“SOME ONE”



Sound alternative to the preferred
treatment plan and not apply
pressure.

Government agency
A b...


FULLVENEER CROWNS;
unquestionably most
retentive.



SINGLE TOOTH
RESTORATION: not nearly
important.



Special conce...


PLASTIC and CEMENTED restoration



PLASTIC RESTORATION: Is inserted as soft or plastic
mass into the cavity preparati...
CEMENTED RESTORATION
 Made of cast metal ,metal ceramics or ceramic material
alone is fabricated away from the operatory ...


When sufficient coronal tooth structure exist to retain and protect a
restoration under the anticipated stresses of mas...







Where extensions can be kept minimal.
Preparation retention will be minimal .
Class 5 lesions
Incipient lesio...


Esthetical critical areas.



Class 4 lesions .



Restoration of posterior teeth with mixed results.

66


Minor to moderate sized lesions in esthetically non critical
areas.

67


Moderate to severe lesions with amalgam
augmented by pins.



As a final restoration when a crown is
contraindicated ....


Minor to moderate lesions where esthetic require
low .



Etchable base metal alloys if a bonding effect is
desired.

...


Minor to moderate sized lesion where esthetic demand is
high.



MOD ceramic inlays can be used on molars.

70


Moderately large lesions on premolars and molars with
intact facial and lingual surfaces.



It will accomodate a wide...


Insufficient coronal tooth.



Deflective axial tooth structure.



Modify contours to refine occlusion or improve es...


To restore a tooth with one or more intact axial surfaces
with half or more of the coronal tooth structure remaining.

...


Restore teeth with multiple defective axial surfaces.



Restricted to situation where there are no esthetic
expectati...


Multiple defective axial surfaces.



Fixed partial dentures retainer where full coverage
and good cosmetic results mu...


Full coverage and maximum esthetics.



Restricted to situation likely to produce low
moderate stress .



Usually us...


Intact anterior tooth that are marred by severe staining or
developmental defects restricted to facial surface of the
t...
SELECTION OF THE TYPE OF THE
POSTHESIS


A REMOVAL PARTIAL DENTURE.



A TOOTH SUPPORTED FIXED PARTIAL DENTURE
OR



AN...


BIOMECHANICAL



PERIODONTAL



ESTHETIC



FINANCIAL and



PATIENTS WISHES.

It is not uncommon to combine two ty...


Edentulous spaces greater than two posterior teeth.



Anterior space greater than four lncisors.



Edentulous space...


Periodontally weakened.



Teeth with short clinical crowns.



Insufficient number of abutments.



If there has be...


Abutment teeth are periodontally sound.



Edentulous span is short and straight.



Expected to provide a longlife o...


Defect free abutments where single missing tooth.



A single molar (muscles are not well developed).



Mesial and d...


Younger patients whose immature teeth with large pulps
are poor risks for endodontic free abutment preparation.



Til...


Insufficient number of abutments.



Partial attitude and or a combination of intra oral factors
make a removable part...


Configuration that permit implant placement.



Single tooth where defect free adjacent teeth.



A span length of tw...


Long standing edentulous space into which there has been
little or no drifting or elongation of the adjacent teeth.


...
In cases where the choice between a fixed partial denture
and a removable partial denture is not clear cut, two or
more tr...
The prosthodontist is the best person to evaluate the physical
and biological factors present , while the patients feeling...
The roots and their supporting tissues should be evaluated
for three factors


Crown root ratio



Root configuration

...


Optimum -2:3



Minimum -1:1 (acceptable)

91


Broader LABIOLINGULLAY than MESIODISTALLY.



Multirooted posterior teeth with widely separated roots.



Conical roo...


Larger teeth have a greater surface area and better
able to bear added stress.



“ ANTE’S LAW” the root surface area ...


In addition to the increased load placed on the pdl by a
long span FPD.



Longer spans are less rigid.



Bending or...
95
TO MINIMIZE –


Greater occlusogingival dimension



Nickel chromium



Double abutment



Multiple grooves



Arch c...
PIER ABUTMENTS


Non rigid connector



Restrict to short span FPD



key way -distal contours of pier a abutment



k...


Mild encroaching- restoring and recontouring



Tilting is severe –corrective measures

98


No FPD replacing a canine should replace more than one
additional tooth.



Edentulous spaces created by the loss of c...


Length roots with favourable configuration.



Long clinical crowns.



Good crown root ratios and healthy periodonti...
101
The history and clinical examination must
provide sufficient data for the practioner to
formulate a successful treatment p...


Tylmans theory and practice of fixed prosthodontic
–eigth edition



Contemporary fixed prosthodontic; Stephen.F.
Rose...
104
Upcoming SlideShare
Loading in …5
×

Diagnosis and treament planning in fixed partial dentures

29,260 views

Published on

basics of diagnosis and treatment planning in FPD

Published in: Health & Medicine

Diagnosis and treament planning in fixed partial dentures

  1. 1. GUIDED BY: Dr.FAYAZ PASHA PRESENTED BY: Dr.SOUMYADEV SATPATHY POST GRADUATE STUDENT DEPARTMENT OF PROSTHODONTICS, V.S.DENTAL COLLEGE & HOSPITAL 1
  2. 2. • • • • • • Introduction Definitions Diagnostic aids – Personal information – Patient evaluation – Medical history – Past dental history – Clinical examination • Extra oral examination • Intraoral examination – Radiographic examination Treatment plan – Adjunctive care • Elimination of infection • Elimination of pathosis Summary Conclusion 2
  3. 3.  Successful management of cases begin with a thorough assessment of the patient’s physical and psychological condition and determining a treatment that will satisfy the realistic expectations of the patient. 3
  4. 4. Resorption of residual alveolar ridges  Occlusal disharmony  Tilting of teeth  Drifting of teeth  4
  5. 5.  DIAGNOSIS  The determination of the nature of a disease. (Glossary of Prosthodontic terms 8)  TREATMENT PLAN  The sequence of procedures planned for the treatment of a patient after diagnosis. (Glossary of Prosthodontic terms 8) 5
  6. 6.  HISTORY  TMJ & EXTRAORAL EVALUATION  INTRA ORAL EXAMINATION  DIAGNOSTIC CASTS  RADIOGRAPHIC EXAMINATION 6
  7. 7. All pertinent information concerning the reasons seeking treatment , along with any personal information, including relevant previous medical and dental experiences. The chief complaint should be recorded preferably in patient’s own words. 7
  8. 8. o o o o o Diagnosis & treatment planning depends upon accurate data collection & record maintenance. Information collection --Questionnaire. --Direct interrogation. --Combination. Name: Patient identification, for addressing. Sex: Patient expectations differ with sex. AGE: As age advances decrease in adaptability & neuromuscular co-ordination , learning ability. Oral & facial tissues lose elasticity &resiliency. 12/09/13 8
  9. 9. o Address: o Telephone. No: o Family history: o Socio-economic status : o Physician tel.ph.no: 12/09/13 9
  10. 10. The accuracy and significance of the patient’s primary reason or reasons for seeking treatment should be analyzed first FOUR CATEGORIES     COMFORT (pain, sensitivity, swelling) FUNCTION (Difficulty in mastication or speech) SOCIAL (Bad taste or odor ) APPEAREANCE (Fractured or unattractive teeth or restorations , discoloration) 10
  11. 11. Accurate and current general medical history should include  Medication.  As well as relevant medical conditions.  If necessary the patients physician(s) can be contacted for clarification.  Conditions affecting the treatment methods  Conditions affecting treatment plan  Systemic conditions with oral manifestations  Possible risk factors for the dental surgeon and 11
  12. 12. . 12
  13. 13. .  Information about missing teeth and any complications that may have occurred during tooth removal is obtained.  Special evaluation data collection procedures are necessary for patients who require prosthodontic care subsequent to orthognathic surgery.  Before any treatment is undertaken, the prosthodontic component of the proposal treatment should be fully coordinated with surgical 13
  14. 14. PERIODONTAL HISTORY  The patients oral hygiene is assessed, current plaque control measures are discussed, as are previously received oral hygiene instructions.  The frequency of any previous debridments should be recorded  Dates nature of any previous periodontal surgery should be noted. 14
  15. 15.  Simple composites resin or dental amalgam fillings or may involve crowns and extensive fixed partial dentures.  The age of previous existing restorations can help the prognosis and probable longevity of any future fixed prosthesis. 15
  16. 16. The findings should be reviewed periodically so that periapical health can be monitored, any recurring lesions promptly detected. 16
  17. 17.  Occlusal analysis should be an integral part of the assessment of a post orthodontic dentition.  If restorative treatment needs are anticipated , they should be undertaken by the restorative dentist. 17
  18. 18.  The patients experiences with removable prostheses must be carefully evaluated.  Listening to the patients comments about previously unsuccessful in assessing whether future treatment will be more successful. 18
  19. 19.  Previous radiographs may prove helpful in judging the progress of dental disease.  They should be obtained if possible, because it is generally better to avoid exposing the patient to unnecessary ionizing radiation.  In most instances , however , a current diagnostic radiographic series is essential and should be obtained as a part of examination. 19
  20. 20. A history of pain or clicking in the TMJ or neuromuscular systems, such as tenderness to palpation, may be due to TMJ DYSFUNCTION, which should be normally be treated and resolved before fixed prosthodontic treatment begins. 20
  21. 21. An examination consist of the clinician’s use of sight, touch , and hearing to detect conditions outside the normal range. 21
  22. 22.  General appearance: Gait and weight are assessed.  Skin color : Anemia or jaundice.  Vital signs: Respiration, pulse, temperature and blood pressure are measured and recorded. 22
  23. 23.  FACIAL ASYMMETRY  CERVICAL LYMPHNODES  TMJ  MUSCLS OF MASTICATION (palpated) 23
  24. 24.  Permits a comparison between the relative timing of left and right condylar movements during the opening stroke.  ASYNCHRONIOUS MOVEMENT :Anterior disk displacement that prevents one of the condyles from making abnormal translatory movements.  Auricular palpation with light anterior pressure helps identify potential disorders in the posterior attachment of the disk. 24
  25. 25.  Tenderness or pain on movement, is noted and can be indicative of inflammatory changes in the retrodiscal tissues ,which are highly vascular and innervated.  Clicking in the TMJ is often notecible through auricular palpation but may be difficult to detect when palpating directly over the lateral pole of the condylar process, because the overlying tissue can “muffel” the click , placement of the fingertips on the mandible will help to identify even a minimal click. 25
  26. 26. Mouth opening  Average opening >50mm  Restricted opening<35mm (intracapsular changes in the joints)  Midline deviation :normal is 12mm 26
  27. 27.  MASSETER ,TEMPORAL MUSCLES and other POSTURAL MUSCLES are palpated for signs of tenderness.  Bilaterally and simultaneously.  light pressure.  Classify the discomfort as MILD, MODERATE or SEVERE.  In TMJ dysfunction , a systematic sequence of muscle palpation should be followed. 27
  28. 28. 28
  29. 29. 29
  30. 30. The sites should be numbered and graded discomfort neuromuscular for so pain and that, If or TMJ treatment is initiated , the examiner can then re palpate the same sites periodically to asses the response to treatment . 30
  31. 31.  Visibility during normal and exaggerated smiling.  This can be critical during FIXED PROSTHODONTIC TREATMENT PLANNING  “NEGATIVE SPACE”:- The space between maxillary and mandibular anteriors during normal smile.  Missing teeth, diastemas and fractured or poorly restored teeth affect negative space and require correction. 31
  32. 32.  Condition of the soft tissues , teeth and supporting structures.  This information can be properly evaluated during treatment planning only if objective indices, rather than vague assessments, are used. 32
  33. 33.  Status of bacterial accumulation  The response of the host tissues and the degree of irreversible damage.  Long term periodontal health is essential to successful fixed prosthodontic treatment.  Existing periodontal disease must be corrected. 33
  34. 34. An accurate charting of the state of the dentition will reveal important information about the condition of the teeth and will facilitate treatment planning. 34
  35. 35. The initial clinical examination starts with the clinician asking the patient to make a few simple opening and closing movements while carefully observing the opening and closing strokes. Special attention is given to Initial tooth contact, Tooth alignment, and Eccentric contacts and jaw maneurability, 35
  36. 36.  RADIOGRAPHS  VITALITY TEST  DIAGNOSTIC CASTS  PERIODONTAL PROBE. 36
  37. 37. Provides supplement information to clinical information  Extent of bone support  Root morphology  Peri apical pathology 37
  38. 38. Presence or absence of teeth Assessing third molars impactions, Evaluating the bone before implant placement. Screening edentulous arches for buried root tips. 38
  39. 39. For assessement of TMJ disorders, More information can be obtained from Tomography Arthrography C T scanning Magnetic resonance imaging 39
  40. 40. Pulpal health must be measured before restorative treatment to  PERCUSSION and  THERMAL STIMULATION  TEST CAVITY-nonvitality without L.A 40
  41. 41. VITALITY TEST asses only afferent Nerve supply. MISDIAGNOSIS occurs if N S is damaged and blood supply intact . Careful inspection of radiographs therefore an essential aid in the examination. 41
  42. 42.  Not all the patients seeking fixed prosthodontic treatment will present diagnostic problems.  Nevertheless ,diagnostic errors are possible, especially when a patient complains if pain or symptoms of occlusal dysfunction.  A logical and systematic approach to diagnosis will help avoid mistakes. 42
  43. 43.  The prognosis is an estimation of the likely course of a disease.  It is difficult to make , but its importance to patient understand successful treatment planning must nevertheless be recognised.  The prognosis of dental disorders is influenced by. 43
  44. 44.  GENERAL FACTORS (age of patient, lowered resistance of the oral environment)  LOCAL FACTORS (Forces applied to a given tooth , access for oral hygiene measures). 44
  45. 45.  A life size reproduction of the parts of the oral cavity and or facial structures for the purpose of study and treatment planning.  Diagnostic casts are the integral part of the diagnostic procedures necessary to give the dentist as complete a perspective as possible of the patients dental needs. 45
  46. 46. 46
  47. 47.  SEMIADJUSTABLE ARTICULATOR with a FACE BOW TRANSFER. Articulated diagnostic casts permits a detailed analysis of occlusal plane and the occlusion for a better diagnosis and treatment plan.  Tooth preparations can be “rehearsed “ on the casts and diagnostic waxing procedures allow evaluation of the eventual outcome of proposed treatment .  47
  48. 48.  CENTRIC RELATION RECORDS are used to replicate on the articulator.  LATERAL OCCLUSAL RECORDS are used to the condylar guidance of the articulator.  Identify the deflective contacts.  A distinction must be made between mounting for diagnosis and for treatment. 48
  49. 49.  The attachment of casts to an articulator for diagnosis will be done with the condyles in the centric relation position.  For restoration of a significant portion of the occlusion , it may also be done with the condyles in the centric relation position. 49
  50. 50.  Mouth preparation refers to the dental procedure that need to be accomplished before fixed prosthodontics can be properly undertaken.  As a general plan , the following sequence of treatment procedures in advance of fixed prosthodontic should be adhered to; 50
  51. 51.  Relief of symptoms (chief complaint)  Removal of etiological factors (eg; excavation of caries removal of deposits)  Repair of damage .  Maintainance of dental health. 51
  52. 52.  The following list describes the sequence in the treatment of a patient with extensive dental disease including missing teeth , retained roots , caries and defective restorations. 52
  53. 53.  Preliminary assessment  Emergency treatment of presenting symptoms  Oral surgery  caries control and replacement of existing restorations  Definitive periodontal treatment 53
  54. 54.  Orthodontic treatment  Definitive occlusal treatment  Fixed prosthodontics  Removable prosthodontics  Follow up care . A logical TREATMENT SEQUENCE should be planned before beginning any fixed prosthodontic intervention. Such planning will normally multidisciplinary.  54
  55. 55. The selection of the material and design of the restoration depends on several factors: DESTRUCTION OF THE TOOTH STRUCTURE  ESTHETICS  PLAQUE CONTROL  FINANCIAL CONSIDERATIONS  RETENTION 55
  56. 56. The destruction previously suffered by the tooth has to be restored , such that the remaining tooth structure must gain strength and protection from restoration , cast metal or ceramic is indicated over amalgam or composite resin . 56
  57. 57.  PARTIAL VENEER restoration can be used to restore in highly visible area.  The use of ceramic in some can be used as FULL VENEER. METAL CERAMIC CROWNS  Single unit anterior  Posterior crowns  Fixed partial denture 57
  58. 58. ALL CERAMIC CROWNS  commonly used on anteriors  posteriors (adequate bulk) 58
  59. 59.  Motivated to follow a regime of brushing, flossing and dietary regulation to control or eliminate the disease process responsible for destruction of tooth structure.  If these measures prove to be successful cast metal, ceramic or metal ceramic restorations can be fabricated. 59
  60. 60.      “SOME ONE”  Sound alternative to the preferred treatment plan and not apply pressure. Government agency A branch of military Insurance company Selection should not be less than optimum just because the patient cannot. 60
  61. 61.  FULLVENEER CROWNS; unquestionably most retentive.  SINGLE TOOTH RESTORATION: not nearly important.  Special concern for ;  Short teeth  Removable partial denture abutment. 61
  62. 62.  PLASTIC and CEMENTED restoration  PLASTIC RESTORATION: Is inserted as soft or plastic mass into the cavity preparation , where it will harden and be retained by mechanical undercuts or adhesion. 62
  63. 63. CEMENTED RESTORATION  Made of cast metal ,metal ceramics or ceramic material alone is fabricated away from the operatory and is luted in or on patients tooth at a subsequent appointment.  One type can be better suited for a particular application than the other or their suitabilities may overlap. 63
  64. 64.  When sufficient coronal tooth structure exist to retain and protect a restoration under the anticipated stresses of mastication an intracoronal can be employed.  In this circumstance , the crown of the tooth and the restoration itself are dependent upon the strength of remaining tooth structure to provide structural integrity. 64
  65. 65.       Where extensions can be kept minimal. Preparation retention will be minimal . Class 5 lesions Incipient lesions Root caries in geriatric patients. Interim treatment restoration to assist in the control of a mouth with rampant caries. 65
  66. 66.  Esthetical critical areas.  Class 4 lesions .  Restoration of posterior teeth with mixed results. 66
  67. 67.  Minor to moderate sized lesions in esthetically non critical areas. 67
  68. 68.  Moderate to severe lesions with amalgam augmented by pins.  As a final restoration when a crown is contraindicated .  Missing cusps or endodontically premolars and molars.  Teeth that ordinarily would be restored with mesioocculsal onlays or other extracoronal restorations. 68
  69. 69.  Minor to moderate lesions where esthetic require low .  Etchable base metal alloys if a bonding effect is desired.  Restoration of MOD on molars. 69
  70. 70.  Minor to moderate sized lesion where esthetic demand is high.  MOD ceramic inlays can be used on molars. 70
  71. 71.  Moderately large lesions on premolars and molars with intact facial and lingual surfaces.  It will accomodate a wide isthmus and upto one missing cusp on molar. 71
  72. 72.  Insufficient coronal tooth.  Deflective axial tooth structure.  Modify contours to refine occlusion or improve esthetics. 72
  73. 73.  To restore a tooth with one or more intact axial surfaces with half or more of the coronal tooth structure remaining.  For short span fixed partial dentures.  If tooth destruction is not extensive. 73
  74. 74.  Restore teeth with multiple defective axial surfaces.  Restricted to situation where there are no esthetic expectations. 74
  75. 75.  Multiple defective axial surfaces.  Fixed partial dentures retainer where full coverage and good cosmetic results must be obtained. 75
  76. 76.  Full coverage and maximum esthetics.  Restricted to situation likely to produce low moderate stress .  Usually used on incisors. 76
  77. 77.  Intact anterior tooth that are marred by severe staining or developmental defects restricted to facial surface of the tooth.  Moderate incisal clipping and proximal lesions. 77
  78. 78. SELECTION OF THE TYPE OF THE POSTHESIS  A REMOVAL PARTIAL DENTURE.  A TOOTH SUPPORTED FIXED PARTIAL DENTURE OR  AN IMPLANT SUPPORTED FIXED PARTIAL DENTURE. 78
  79. 79.  BIOMECHANICAL  PERIODONTAL  ESTHETIC  FINANCIAL and  PATIENTS WISHES. It is not uncommon to combine two types in the same arch. 79
  80. 80.  Edentulous spaces greater than two posterior teeth.  Anterior space greater than four lncisors.  Edentulous space with no distal abutment.  Multiple edentulous spaces.  Tipped teeth adjoining edentulous spaces and prospective abutments with divergent alignment. 80
  81. 81.  Periodontally weakened.  Teeth with short clinical crowns.  Insufficient number of abutments.  If there has been a severe loss of tissues in the edentulous ridge.  Patients of advanced age who are on fixed incomes or have systemic problems. 81
  82. 82.  Abutment teeth are periodontally sound.  Edentulous span is short and straight.  Expected to provide a longlife of function for the patient.  No gross soft tissue defect in the edentulous ridge.  Reserved for patients who are both highly motivated and able to afford. 82
  83. 83.  Defect free abutments where single missing tooth.  A single molar (muscles are not well developed).  Mesial and distal abutment are present.  Moderate resorption and no gross soft tissue defects on edentulous ridges. 83
  84. 84.  Younger patients whose immature teeth with large pulps are poor risks for endodontic free abutment preparation.  Tilted tooth can be accommodated only if there enough tooth structure to allow a change in the normal alligment of axial reduction.  Periodontal splints. 84
  85. 85.  Insufficient number of abutments.  Partial attitude and or a combination of intra oral factors make a removable partial denture or FPD a poor choice.  No distal abutment.  Alveolar bone with satisfactory density and thickness in a broad, flat ridges. 85
  86. 86.  Configuration that permit implant placement.  Single tooth where defect free adjacent teeth.  A span length of two or six teeth can be replaced by multiple implants.  Pier in an edentulous span (three or more teeth long). 86
  87. 87.  Long standing edentulous space into which there has been little or no drifting or elongation of the adjacent teeth.  If the patients percieves no functional , occlusal or esthetic impairement. 87
  88. 88. In cases where the choice between a fixed partial denture and a removable partial denture is not clear cut, two or more treatment options should be presented to the patients along with their advantages and disadvantages. 88
  89. 89. The prosthodontist is the best person to evaluate the physical and biological factors present , while the patients feelings should carry considerable weight on matters of esthetics & finances . 89
  90. 90. The roots and their supporting tissues should be evaluated for three factors  Crown root ratio  Root configuration  Periodontal ligament area 90
  91. 91.  Optimum -2:3  Minimum -1:1 (acceptable) 91
  92. 92.  Broader LABIOLINGULLAY than MESIODISTALLY.  Multirooted posterior teeth with widely separated roots.  Conical roots can be used -for short span.  A single rooted tooth with evidence of irregular configuration or with some curvature in the tooth that has a nearly taper. 92
  93. 93.  Larger teeth have a greater surface area and better able to bear added stress.  “ ANTE’S LAW” the root surface area of the abutment teeth had to equal or surpassed that of the teeth being replaced with pontics. 93
  94. 94.  In addition to the increased load placed on the pdl by a long span FPD.  Longer spans are less rigid.  Bending or deflection varies directly with the cube of the length and inversely with cube of the occlusogingivally thickness of the pontic . 94
  95. 95. 95
  96. 96. TO MINIMIZE –  Greater occlusogingival dimension  Nickel chromium  Double abutment  Multiple grooves  Arch curvature ( minimize additional retention from opposite arch) 96
  97. 97. PIER ABUTMENTS  Non rigid connector  Restrict to short span FPD  key way -distal contours of pier a abutment  key - mesial side of the distal pontic 97
  98. 98.  Mild encroaching- restoring and recontouring  Tilting is severe –corrective measures 98
  99. 99.  No FPD replacing a canine should replace more than one additional tooth.  Edentulous spaces created by the loss of canine and any contiguous teeth is best restored with Implants. 99
  100. 100.  Length roots with favourable configuration.  Long clinical crowns.  Good crown root ratios and healthy periodontium.  Should replace only one tooth and have atleast two abutments.  Pontic should posses maximum occlusogingival height to ensure a rigid prosthesis. 100
  101. 101. 101
  102. 102. The history and clinical examination must provide sufficient data for the practioner to formulate a successful treatment plan. In particular it is critical to develop a through understanding of special patient concerns relating to previous care and expectations about future treatment. A diagnosis is a summation of the observed problems and their underlying etiologies. The overall prognosis is influenced by general and local factors 102
  103. 103.  Tylmans theory and practice of fixed prosthodontic –eigth edition  Contemporary fixed prosthodontic; Stephen.F. Rosenstiel –third edition.  Fundamentals of fixed prosthodontic; Herbert.T. Shillingburg –third edition 103
  104. 104. 104

×