Inlay and onlay
balsam m. mirdan
Inlays and Onlays
Dental inlays and onlays are restorations used to repair
rear teeth with mild to moderate decay or cracked and
fractured teeth that are not sufficiently damaged to
need a crown.
indication
• Large Restorations
• Endodontically Treated Teeth
• Teeth at Risk for Fracture
• Dental Rehabilitation with Cast Metal
Alloys
• Removable Prosthodontic Abutment
CONTRAINDICATIONS
• High Caries Rate
• Young Patients
• Esthetics
• Small Restorations
ADVANTAGES
• Strength
• Biocompatibility
• Low Wear
• Control of Contours and Contacts
DISADVANTAGES
• Number of Appointments and Higher Chair Time
• Temporary
• Cost
• Technique Sensitive
• Splitting Forces
INITIAL PROCEDURES
Occlusion
• the occlusal contacts in maximum intercuspation
where the teeth are brought into full
interdigitation
• the occlusal contacts that occur during mandibular
movements
temporization
Tooth preperation
• Gingival to occlusal divergenace 2-5 degree
• General rule is to maintain the long axis of the bur
parallel to the long axis of the tooth
Crown all the time expect for mandibular molars
(tilted lingual)
REMOVAL OF INFECTED DENTIN
Preperation of bevel and flare
