The document discusses fundamentals of tooth preparation. It defines tooth preparation as the mechanical alteration of a tooth to receive a restorative material and restore the tooth's health, aesthetics, function and form. The objectives of tooth preparation are to remove all defects, extend restorations conservatively, and position restorations to avoid fracture under force. The document also covers stages, terminology, factors affecting preparation and classifications of tooth preparations.

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FUNDAMENTALS OFFUNDAMENTALS OF
TOOTH PREPARATIONTOOTH PREPARATION
‫م‬ِ ‫حمي‬ِ ‫ر‬َّ ‫نا ال‬ِ ‫حنم‬ْ‫ِنم‬ ‫ر‬َّ ‫هللا ال‬ِ ‫ما ا‬ِ ‫س‬ْ‫ِنم‬ ‫ب‬ِ ‫ا‬
Dr. Agha Suhail Khan , Associate Professor, Multan Medical & Dental College

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DEFINATION OF TOOTH PREPARATION
Mechanical alteration of a defective,
injured or diseased tooth to receive a
restorative material that re-establishes a
healthy state for the tooth regarding
esthetic, normal form and function.
Because ‫ا‬remaining ‫ا‬infected ‫ا‬or ‫ا‬
friable ‫ا‬tooth ‫ا‬structure ‫ا‬may ‫ا‬
result ‫ا‬in ‫ا‬further ‫ا‬caries ‫ا‬
progression, ‫ا‬sensitivity, ‫ا‬pain ‫ا‬or ‫ا‬
fracture ‫ا‬of ‫ا‬tooth ‫ا‬or ‫ا‬restoration ‫ا‬
or ‫ا‬both
Amalgam, ‫ا‬Gold
Composite
Restorative ‫ا‬intervention ‫ا‬primarily
repairs ‫ا‬the ‫ا‬damage ‫ا‬caused ‫ا‬by ‫.ا .ا .ا‬

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1. Remove all defects and provide protection to
pulp
2. Extend the restoration as conservatively
3. Form the tooth preparation so that under the
force of mastication the tooth or restoration will
not fracture and restoration will be displaced
4. Esthetic and functional placement of
restoration
OBJECTIVES OF TOOTH PREPARATION

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INITIAL ‫ا‬STEPS ‫ا‬OF ‫ا‬PREPARATION:
• Extension to sound tooth structure.
• Depth of preparation .
• Retention of the restorative material.
FINAL ‫ا‬STEPS ‫ا‬OF ‫ا‬PREPARATION:
• Excavation carious dentine.
• Removing previous restoration.
• Pulp protection.
• Finishing.
• Cleaning.
STAGES OF TOOTH PREPARATION

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DIAGNOSIS:
• Reason ‫ا‬to ‫ا‬restore.
• Status ‫ا‬of ‫ا‬disease
• Occlusal ‫ا‬relationship.
KNOWLEDGE ‫ا‬OF ‫ا‬DENTAL ‫ا‬ANATOMY:
• Enamel ‫ا‬rods, ‫ا‬thickness, ‫ا‬pulp.
PATIENT ‫ا‬FACTOR:
• Patients ‫ا‬knowledge, ‫ا‬Dental ‫ا‬health ‫ا‬status, ‫ا‬Economic ‫ا‬status, ‫ا‬Age
CONSERVATION ‫ا‬OF ‫ا‬TOOTH ‫ا‬STRUCTURE:
• Repair ‫ا‬the ‫ا‬damage ‫ا‬
• Preserve ‫ا‬the ‫ا‬vitality
• Sound ‫ا‬tooth ‫ا‬structure
RESTORATIVE ‫ا‬MATERIAL ‫ا‬FACTOR:
• Economic ‫ا‬status
FACTORS AFFECTING TOOTH
PREPARATION

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TOOTH PREPARATION TERMINOLOGY
SIMPLE: One ‫ا‬surface

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TOOTH PREPARATION TERMINOLOGY
COMPOUND: Two ‫ا‬surfaces

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TOOTH PREPARATION TERMINOLOGY
COMPLEX:
‫ا ا ا ا ا‬Three ‫ا‬surfaces

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TOOTH PREPARATION TERMINOLOGY
TOOTH
PREPARATION
WALLS:
• INTERNAL ‫ا‬WALL

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TOOTH PREPARATION TERMINOLOGY
TOOTH
PREPARATION
WALLS:
• EXTERNAL WALL

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TOOTH PREPARATION TERMINOLOGY
TOOTH
PREPARATION
WALLS:
• External Wall Of
Tooth Preparation

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TOOTH PREPARATION TERMINOLOGY
• TOOTH
PREPARATION
WALLS:
• AXIAL WALL

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TOOTH PREPARATION TERMINOLOGY
• TOOTH
PREPARATION
WALLS:
• AXIAL WALL

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TOOTH PREPARATION TERMINOLOGY
TOOTH
PREPARATION
WALLS:
• PULPAL WALL

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TOOTH PREPARATION TERMINOLOGY
TOOTH
PREPARATION
WALLS:
• FLOOR

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TOOTH PREPARATION TERMINOLOGY
TOOTH
PREPARATION
WALLS:
• ENAMEL WALL

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TOOTH PREPARATION TERMINOLOGY
TOOTH
PREPARATION
WALLS:
• DENTINE WALL

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TOOTH PREPARATION TERMINOLOGY
TOOTH
PREPARATION
ANGLES:
• LINE ANGLES:
• POINT ANGLE:

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TOOTH PREPARATION TERMINOLOGY
TOOTH
PREPARATION
ANGLES:
• CAVOSURFACE
ANGLE:

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TOOTH PREPARATION TERMINOLOGY
TOOTH
PREPARATION
ANGLES:
• CAVOSURFACE
ANGLE:

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TOOTH PREPARATION TERMINOLOGY
INTRACORONAL
TOOTH
PREPARATIONS:

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TOOTH PREPARATION TERMINOLOGY
EXTRACORONAL
TOOTH
PREPARATIONS:

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TOOTH PREPARATION TERMINOLOGY
ANATOMIC
TOOTH CROWN:
CLINICAL TOOTH
CROWN:

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CLASSIFICATION OF TOOTH
PREPARATION
G.V.BLACK CLASSIFICATION
CLASS I, CLASS II, CLASS III, CLASS IV,
CLASS V, CLASS VI

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CLASSIFICATION OF TOOTH
PREPARATION
CLASS 1

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CLASS I
RESTORATION:
• RESTORATION ON
OCCLUSAL SURFACE
OF PREMOLARS AND
MOLARS:
CLASSIFICATION OF TOOTH
PREPARATION
D
p L
F
M

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CLASS I
RESTORATION:
• RESTORATION ON
OCCLUSAL SURFACE
OF PREMOLARS AND
MOLARS:
CLASSIFICATION OF TOOTH
PREPARATION
D
p L
F
M

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CLASS I
RESTORATION:
• RESTORATION ON
OCCLUSAL TWO
THIRDS OF FACIAL
AND LINGUAL
SURFACE OF MOLARS:
CLASSIFICATION OF TOOTH
PREPARATION

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CLASS I
RESTORATION:
• RESTORATION ON
LINGUAL SURFACE OF
MAXILLARY INCISORS:
CLASSIFICATION OF TOOTH
PREPARATION

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CLASS II
RESTORATION:
• RESTORATION ON
PROXIMAL SURFACES OF
PREMOLARS AND MOLARS:
• DISTO-OCCLUSAL
PREPARATION (DO):
• MESIO-OCCLUSAL
PREPARATION (MO):
• MESIO-OCCLUSO-DISTAL
PREPARATION (MOD):
CLASSIFICATION OF TOOTH
PREPARATION
L
O
G
F

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CLASS III
RESTORATION:
• RESTORATION ON
PROXIMAL SURFACES
OF ANTERIOR TEETH
WITHOUT THE
INVOLVEMENT OF
INCISAL EDGE:
CLASSIFICATION OF TOOTH
PREPARATION
I
G
FL

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CLASS IV
RESTORATION:
• RESTORATION ON
PROXIMAL SURFACES
OF ANTERIOR TEETH
THAT INVOLVE THE
INCISAL EDGE:
CLASSIFICATION OF TOOTH
PREPARATION
G
M
L
F

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CLASS V
RESTORATION:
• RESTORATION ON
GINGIVAL THIRD OF
FACIAL OR LINGUAL
SURFACES OF ALL
TEETH:
CLASSIFICATION OF TOOTH
PREPARATION
I
G
D
M

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CLASS VI
RESTORATION:
• RESTORATION ON
INCISAL EDGE OF
ANTERIOR TEETH
AND OCCLUSAL
CUSP HEIGHT OF
POSTERIOR TEETH:
CLASSIFICATION OF TOOTH
PREPARATION

35. Thank You
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