CAD CAM in Dental Implants

In recent years, implant technique is widely used for replacing a lost dentition inside the oral cavity. Osseointregrated implant system has been introduced and used in many countries. A lot of company offers various implant system in the market worldwide. Different fabrication style of implant are now available but with the advancement of technologies, like the development of different system supported by computer, CAD-CAM is now used in almost all dental lab field.

Pointers in applying CAD CAM System to fabricate implat structures abutment
1. Design, diagnosis for implant restoration.
2. Immediate pressure for implant restoration.
3. Fabrication of custom abutment.
4. Implant abutment structure fabrication by using CAD CAM System.
5. Occlusion in implant restoration.

Micromotion in Dental Implants

Extrinsic Factors Affecting Micromotion in Dental Implants

• Initial stability
• Type of dental implants
• Number of implants
• Location of implants
• Splinting dental implants

Type of dental implant affects Micromotion

Destruction of Osseointegration in Dental Implants

A contributing factor in bone resorption is local inflammation from plaque accumulation.

1. The direct action of plaque products on bone progenitor cells induces their differentiation to osteoclasts.
2. Plaque products also acts directly on bone, destroying it through a non cellular mechanism.
3. Plaque products stimulategingival cells, causing them to release mediators which in turn induce bone progenitor cells to differentiate into osteoclasts.
4. Plaque products cause gingival cells to release agents that can act as cofactors in bone resorption.
5. Plaque products cause gingival cells to release agents that destroy bone by direct chemical action, without osteoclasts.

Dental Implant Osseointegration

Local Factors that may influence implant osseointegration
1. Material
2. Surface composition and structure
3. Heat
4. Contamination
5. Initial stability
6. Bone quality
7. Epithelial downgrowth
8. Loading