Dental Preparation Design and Modifications Guide
Explore essential design features, modifications, and factors influencing Class II preparation design in dentistry. Learn about preserving aesthetics, addressing caries extent, and considerations for adjacent and abutment teeth.
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Presentation Transcript
GOOD MORNING N E L I G T R A
MODIFICATIONS IN CLASS II PREPARATION DESIGN
FACTORS AFFECTING CLASS II PREPARATION DESIGN Extent of caries Aesthetic requirement Relationship with adjacent tooth Requirement for abutment tooth Rotated teeth.
MODIFICATIONS IN CLASS II DESIGN Simple box preparation Small proximal caries, not involving the occlusal surface Proximal surface caries with narrow proximal contact Proximal caries in attrited teeth When the involved marginal ridge does not support the occlusal contact
Slot Preparation Proximal root caries in geriatric patients with gingival recession When adjacent tooth is missing
Conservative design Helps in the preservation of oblique ridge or the transverse ridge which protects the cuspal strength
Modifications to preserve esthetics Sometimes modification is indicated for maxillary first premolar restoration to avoid unesthetic display of amalgam. Design feature for mesio-occlusal preparation, is that facial wall of proximal box is prepared straight parallel to long axis of the tooth.
Modification for rotated teeth DESIGN FEATURES
Adjoining restorations DESIGN FEATURES
Modifications for abutment teeth for removable partial dentures DESIGN FEATURES
