Class III Semi-adjustable condylar path articulators Prof. Dr. : Ahlam El-Sharkawy Head of the Prosthodontic Department Pharos University in Alexandria

Semi-Adjustable Articulators Accept the following records 1-Accepts facebow transfer record to mount upper cast.

2- Accepts centric relation record to mount the lower cast.

3- Accepts protrusive records to adjust the articulator’s horizontal guidance.

4- Adjusted incisal guidance angle .

Semi-Adjustable Articulators 5- The lateral condylar guidance is adjusted according to the Hanau’s formula L=H/8+12 L = the lateral condylar path H = the horizontal condylar path angle which is recorded from the patient.

6-Intercondylar distance fixed at 110mm

Fully Adjustable Condylar Path Articulators Class IV Fully Adjustable Condylar Path Articulators Prof.Dr. Ahlam El-Sharkawy Head of prosthodontic departement Pharos University in Alexandria

Fully adjustable articulator Complex Designed to duplicate TMJ features

Fully adjustable articulators Accept the following records: 1-Accept Face bow record to mount the upper cast.

2-Accept centric occluding relation record to mount the lower cast.

Fully adjustable articulators 3-Accept protrusive record to adjust the articulator horizontal condylar angles. 4-Accept right lateral record, to adjust the right condylar angle. 5-Accept left lateral record, to adjust the left

6- Incisal guidance angle adjusted according to the patient .

6- Inter-condylar distance adjusted according to the patient.

Point Of Difference Simple Hinge Mean Value Semi-Adjustable Fully-Adjustable Horizontal Angle Lateral Angle Incisal Angle Incisal Pin Inter Condylar distance Face bow Arcon/Non.

Classification Prof.Dr. Ahlam El-Sharkawy Depends on the location of the condyle whether in the upper or lower member of the articulator: 1- Arcon articulator. 2- Non Arcon articulator. Prof.Dr. Ahlam El-Sharkawy Head of prosthodontic departement Pharos University in Alexandria

Arcon articulator The condyles are located on the lower member of the articulator and the condylar guidances are on the upper member. AR=Articulator Con= Condyle. Arcon

Non arcon articulator. The condyles are located on the upper member of the articulator and the condylar Guidance on the lower member.

Articulator Design Arcon - condylar element on lower Just like the condyles are attached to the mandible Mechanical fossae located on the upper member just like the glenoid fossae Non Arcon - condylar element on upper Unlike natural anatomy The condylar path (glenoid fossae) is located on the lower member There are two basic designs used in the fabrication of articulators Condylar inclination is used to set the instrument as close as possible to the anatomic inclination of the patient