basic principles of removable partial denture design dr. emad hanbali
TRANSCRIPT
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Basic principles of Basic principles of Removable Partial Removable Partial
Denture DesignDenture Design
Dr. Emad HanbaliDr. Emad Hanbali
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OutlineOutlineOutline the edentulous areas to Outline the edentulous areas to
be restored :be restored :- The classificationThe classification- The primary abutmentsThe primary abutments- The guiding planes The guiding planes - The anterior posterior tiltThe anterior posterior tilt
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Class III
Unmodified
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Class III
Unmodified
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Class III
Unmodified
GP 1
GP 2
Primary abutments
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AP tilt
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SupportSupport
UniformDual
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GP 1
GP 2
Primary supporting elements
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One rest = pivotOne rest = pivot
Two rests = Two rests = fulcrumfulcrum
The Introduction
of :
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Basic principle of Basic principle of design :design :
Cross-arch stabilization :Cross-arch stabilization :
A)A) Indirect retention Indirect retention
B)B) Indirect supportIndirect support
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GP 1
GP 2
Imaginary
fulcrum line
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GP 1
GP 2Perpendicular
bisector of fulcrum line to mark the most suitable sight for setting of indirect retention rests and indirect supporting clasps.
X
X
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GP 1
GP 2
X
X
Short span : triangular
configuration
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GP 1
GP 2
X
X
Long span: trapezoidal configurati
on
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Connectors:Connectors:
A)A) Major ConnectorMajor Connector
B)B) Minor ConnectorMinor Connector
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Mid palatal strap major connector
Minor connector
Mesh
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6-8 mm
AP Palatal strapRidged design
Hygienic designPatient tolerance
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Retention : Direct Retention : Direct retainersretainers
Clasp assembly :
1.Minor connector
2.Rest
3.Retentive arm
4.Reciprocal arm
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OSCAROSCAR
OO : : OOutlineutline
SS : : SSupportupport
CC : : CConnectoronnector
AA : : &&
RR : : RRetentionetention
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E
N
J
O
Y
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