Preclinical Fixed Prosthodontics I Quiz

Course Information

• Course Title: Preclinical Fixed Prosthodontics I
• Course Code: PRO 221
• Lecturer: Dr. Nermeen Nagi
• Post: Assistant Professor of Fixed Prosthodontics
• University: Gala University
• Faculty: Faculty of Dentistry
• Year: Fall 2023

Curriculum PRO 221

• Introduction and nomenclature
• Instruments
• Principles of tooth preparation
• Full metal crown
• Metal-ceramic crown

Prosthesis

• Prosthesis is an artificial replacement of a missing body part
• Examples include artificial limbs, eye prosthetics

Prosthodontics

• Prosthodontics is a dental specialty focusing on artificial replacements for missing parts of the mouth and jaw
• Also known as prosthetic dentistry or prosthodontia
• Subspecialties include fixed and removable prosthodontics

Goals of Prosthodontics

• Restore mastication
• Restore speech
• Restore aesthetics
• Restore occlusion
• Restore health

Fixed Prosthodontics (Single Restorations)

• Intra-coronal restorations: Inlays and onlays (Gold and all-ceramic)
• Extra-coronal restorations: Crowns (full and partial coverage) and veneers
• Intra-radicular restorations: Post crowns

Intra-coronal Restorations (Inlays)

• Indirect restorations made of gold, composite resin, or ceramic material
• Involve the occlusal and one or both proximal surfaces
• Cemented into a prepared cavity in the tooth

Intra-coronal Restorations (Onlays)

• Indirect restorations made of gold, composite resin, or ceramic material
• Involve the occlusal and one or both proximal surfaces with cusp coverage

All-Ceramic Inlay and Onlay

• Restorations of inlay and onlay types using ceramic materials

Inlay, Onlay, and Full Crown

• Visual representation with diagram of inlay, onlay, and full crown

Overlay

• Covers both inner and outer parts of the crown
• Preserves the tooth substance

Extra-coronal Restorations (Crowns and Bridges)

• Types of restorations that cover the entire crown portion of the tooth

Crown

• Artificial replacement that restores missing tooth structure by surrounding most or all of the remaining structure with a material (cast metal, ceramic, or combination of metal and porcelain)
• Can be full coverage or partial coverage

Classification of Crowns (by Number of Covered Surfaces)

• Full Coverage (5 surfaces)
• Partial Coverage (1 to 4 surfaces)

Classification of Crowns (by Material)

• Metallic: Cast, Non-casted (Swaged, milled, sintered)
• Non-metallic: Ceramics, Resins
• Combination: Ceramo-metallic or porcelain fused to metal restorations

Complete Metal Cast Crown

• A restorative dental procedure

Milled Crown

• Computerized milling machine cuts out the restoration from a solid block of material

Sintering (3D-printed) Metal Crown

• 3D printer spreads a thin layer of metal powder
• Laser sinters the metal to create the shape of the restoration

Porcelain Jacket Crown

• Used to cover the entire surface of the affected tooth
• Protects affected teeth from damage

Temporary Crown

• Provisional or interim crown
• Made from resin material
• Serves until a permanent restoration is placed

Intra-radicular Restorations

• Restoration method used on endodontically treated teeth
• Inserts a post into the prepared root canal
• Used when the remaining coronal tissue cannot provide adequate support and retention

Clinical Procedure for Preparing and Inserting a Post

• Steps involved in preparing and inserting a post into a treated tooth
• Includes final post space preparation, prepared post space, dentine pretreatment, inserting a post, preformed plastic build-up, and abutment preparation