basic principles of removable partial denture design.ppt
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Basic principles of Basic principles of Removable Partial Removable Partial
Denture DesignDenture Design
Dr. Emad HanbaliDr. Emad Hanbali
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
Class III
Unmodified
Class III
Unmodified
Class III
Unmodified
GP 1
GP 2
Primary abutments
AP tilt
SupportSupport
UniformDual
GP 1
GP 2
Primary supporting elements
One rest = pivotOne rest = pivotTwo rests = Two rests =
fulcrumfulcrum
The Introduction
of :
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
GP 1
GP 2
Imaginary
fulcrum line
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
GP 1
GP 2
X
XShort span : triangular
configuration
GP 1
GP 2
X
X
Long span: trapezoidal configurati
on
Connectors:Connectors:A)A) Major ConnectorMajor ConnectorB)B) Minor ConnectorMinor Connector
Mid palatal strap major connector
Minor connector
Mesh
6-8 mm
AP Palatal strapRidged design
Hygienic designPatient tolerance
Retention : Direct Retention : Direct retainersretainers
Clasp assembly :1.Minor
connector2.Rest 3.Retentive arm4.Reciprocal arm
OSCAROSCAR
OO : : OOutlineutlineSS : : SSupportupportCC : : CConnectoronnectorAA : : &&RR : : RRetentionetention
ENJOY
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