Maxillary Kennedy Cl I

Maxillary Kennedy Cl I

Case 1: Figure 11.1

Şekil 11.1. Vaka 1: a) Cl I: 15 ve 25 no’lu terminal desteklerden geçen diametrik fulkrum ekseni . b) Metal alt yapı planı
Figure 11.1. a) Diametric fulcrum axis passing through the terminal abutments numbered 15 and 25 in a Class I case.
 b) Metal framework design.
Figure 11.1. b) Metal framework design.

Case description and design parameters

Case classification:

Two distal extension edentulous spaces, Class I

Support areas:

Tooth support: Terminal abutments; diametric fulcrum axis between teeth 15 and 25

Occlusal rest: Teeth 15 and 25 (mesio-occlusal)
*In case of interocclusal interference: teeth 15 and 25 (disto-occlusal)

Tissue support: Mucosal support in the distal extension edentulous area

Guide plane:
Distal extension; teeth 15 and 25

Direct retainer:
Bar clasp; teeth 15 and 25 (I-bar; mesio-buccal undercut, Modified T-bar; disto-buccal undercut)
*In the presence of a soft tissue undercut, gingival clasp; teeth 15 and 25 (mesio-buccal undercut)
Reciprocation: Stabilizing arm and proximal plate

Indirect retainer:
Auxiliary occlusal rest; teeth 14 and 24 (mesio-occlusal)
*Adding a canine extension to the auxiliary occlusal rest increases its effectiveness.

Major connector:
Double palatal bar
*In the presence of a torus or gag reflex, a U-plate covering the rugae for an alternative rigid major connector

Minor connectors:
Approaching arms of bar clasps, minor connectors that link the occlusal rests, indirect retainers, and artificial teeth to the major connector.

Denture base and artificial teeth:
Distal extension bases; metal-acrylic bases with acrylic artificial teeth

 

Case 2: Figure 11.

 

Figure 11.2. a) Cl I: The diametric fulcrum axis passing through the terminal abutments 14 and 24.
Figure 11.2. a) Cl I: The diametric fulcrum axis passing through the terminal abutments 14 and 24.
Figure 11.2. b) Metal framework design.

Case 3: Figure 11.3

Figure 11.3. a) Cl I: The diametric fulcrum axis passing through the terminal abutments 13 and 23.
b) Metal framework design (Dotted area on the U-plate: Ruga support; indirect retention)

Figure 11.3. a) Cl I: The diametric fulcrum axis passing through the terminal abutments 13 and 23.
Figure 11.3. a) Cl I: The diametric fulcrum axis passing through the terminal abutments 13 and 23.
b) Metal framework design (Dotted area on the U-plate: Ruga support; indirect retention)
Figure 11.3. b)Metal framework design (Dotted area on the U-plate: Ruga support; indirect retention)

Case 4: Figure 11.4

 

Figure 11.4. a) Cl I: The diametric fulcrum axis passing through the terminal abutments 12 and 22.
Figure 11.4. a)Cl I: The diametric fulcrum axis passing through the terminal abutments 12 and 22.
b) Metal framework design.
Figure 11.4. b) Metal framework design.

Case 5: Figure 11.5

Figure 11.5. a) Cl I: The diagonal fulcrum axis passing through the terminal abutments 14 and 25.
Figure 11.5. a) Cl I: The diagonal fulcrum axis passing through the terminal abutments 14 and 25.
b) Metal framework design.
Figure 11.5. b) Metal framework design.

 

Case 6: Figure 11.6

Figure 11.6. a) Cl I: The diagonal fulcrum axis passing through the terminal abutments 13 and 25.
Figure 11.6. a) Cl I: The diagonal fulcrum axis passing through the terminal abutments 13 and 25.
Figure 11.6. b)Metal framework design (Dotted area on the U-plate: Ruga support; indirect retention)
Figure 11.6. b)Metal framework design (Dotted area on the U-plate: Ruga support; indirect retention)

 

Case 7: Figure 11.7

 

Figure 11.7. a) Cl I: The diagonal fulcrum axis passing through the terminal abutments 13 and 24.
Figure 11.7. a) Cl I: The diagonal fulcrum axis passing through the terminal abutments 13 and 24.
Figure 11.7. b) Metal framework design.
Figure 11.7. b) Metal framework design.

Maxillary Kennedy Cl I modifications

Case 8. Figure 11.8

Figure 11.8. a) Cl I Mod 1: The diagonal fulcrum axis passing through the terminal abutments 14 and 25.
Figure 11.8. a) Cl I Mod 1: The diagonal fulcrum axis passing through the terminal abutments 14 and 25.
Figure 11.8. b) Metal framework design
Figure 11.8. b) Metal framework design

Case description and design parameters

Case classification:

Two distal extension and one tooth supported edentulous areas; Cl I Mod 1

Support areas:
Tooth support: Terminal abutments; diagonal fulcrum axis between teeth 14 and 25
Occlusal rests: 14 and 25 (MO)
Secondary support: Cingulum rest on 23
Tissue support: Mucosal support on the distal extension areas

Guide plane:
Distal extension: 14 and 25 (D), tooth-supported: 23 (D), 25 (M)

Direct retainer:
Bar clasp: 14 and 25 (I Bar; MB undercut, Modified T Bar; DB undercut)
Reciprocation: MO rests along with proximal and palatal plates
*In the presence of soft tissue undercut, gingival clasp: 14 and 25 (MB undercut)

Indirect retainer:
Canine extensions on 13 and 23

Major connector:
Double palatal bar
*In case of gag reflex, U-plate covering the rugae for an alternative rigid major connector

Minor connectors:
Those connecting the approaching arms of bar clasps and artificial teeth to the major connector

Denture base and artificial teeth:
Distal extension bases; metal-acrylic base, acrylic artificial teeth and tube tooth on 24

 

Case 9. Figure 11.9

Figure 11.9. a) Cl I Mod 1: The diametric fulcrum axis passing through the terminal abutments 15 and 25. 
Figure 11.9. a) Cl I Mod 1: The diametric fulcrum axis passing through the terminal abutments 15 and 25.
Figure 11.9. b) Metal framework design.
Figure 11.9. b) Metal framework design.

Case 10. Figure 11.10

Figure 11.10. a) Cl I Mod 1: The diametric fulcrum axis passing through the terminal abutments 13 and 23.
Figure 11.10. a) Cl I Mod 1: The diametric fulcrum axis passing through the terminal abutments 13 and 23.
Figure 11.10. b) Metal framework design.
Figure 11.10. b) Metal framework design.

Case 11. Figure 11.11

Figure 11.11. a) Cl I Mod 1: The diametric fulcrum axis passing through the terminal abutments 15 and 25.
Figure 11.11. a) Cl I Mod 1: The diametric fulcrum axis passing through the terminal abutments 15 and 25.
Figure 11.11. a)  Metal framework design.
Figure 11.11. b)  Metal framework design.

Case 12. Figure 11.12

Figure 11.12. a) Cl I Mod 1: The diametric fulcrum axis passing through the terminal abutments 14 and 24.
Figure 11.12. a) Cl I Mod 1: The diametric fulcrum axis passing through the terminal abutments 14 and 24.
Figure 11.12. b) Metal framework design.
Figure 11.12. b) Metal framework design.

Case 13. Figure 11.13

 

Figure 11.13. a) Cl I Mod 1: The diagonal fulcrum axis passing through the terminal abutments 14 and 25.
Figure 11.13. a) Cl I Mod 1: The diagonal fulcrum axis passing through the terminal abutments 14 and 25.
Figure 11.13. b)  Metal framework design.
Figure 11.13. b)  Metal framework design.

 

Case 14. Figure 11.14

Şekil 11.14. a) Cl I Mod 1: The diagonal fulcrum axis passing through the terminal abutments 13 and 25.
Şekil 11.14. a) Cl I Mod 1: The diagonal fulcrum axis passing through the terminal abutments 13 and 25.
Metal framework design.
Şekil 11.14. b) Metal framework design

 

Case 15. Figure 11.15

Figure 11.15. a) Cl I Mod 3: The diametric fulcrum axis passing through the terminal abutments 15 and 25.
Figure 11.15. a) Cl I Mod 3: The diametric fulcrum axis passing through the terminal abutments 15 and 25.
Metal framework design.
Figure 11.15. b) Metal framework design.

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A Guide to Removable Partial Denture Planning Copyright © 2025 by Funda Akaltan. All Rights Reserved.

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