Mandibular Kennedy Cl I

Mandibular Kennedy Cl I

Case 38. Figure 11.38

Figure 11.38. a) Cl I: Diametric fulcrum line passing through the terminal abutments of teeth 35 and 45.
Figure 11.38. a) Cl I: Diametric fulcrum line passing through the terminal abutments of teeth 35 and 45.
Figure 11.38. b) Metal framework design.
Figure 11.38. b) Metal framework design.

Case description and design parameters

Case classification:
Two distal extension edentulous areas; Class I

Support areas:
Tooth support: Diametric fulcrum line passing between the terminal abutments of teeth 35 and 45
Occlusal rests: 35 and 45 (MO)
*In the presence of interocclusal interference: 35 and 45 (DO)
Tissue support: Mucosal support in the distal extension edentulous areas

Guide planes:
Distal extension: 35 and 45 (D)

Direct retainer:
Bar clasps: 35 and 45 (I bar; MB undercut, Modified T bar; DB undercut)
*In the presence of soft tissue undercuts: gingival clasp; 35 and 45 (MB undercut)

Reciprocation:
MO rests with proximal plates and stabilizing arms

Indirect retainer:
Auxiliary occlusal rests: 34 and 44 (MO)
*Effectiveness increases with the addition of canine extension to the auxiliary occlusal rest

Major connector:
Lingual bar

Minor connectors:
Elements connecting the approach arms of bar clasps, occlusal rests, indirect retainers, and artificial teeth to the major connector

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

Case 39. Figure 11.39

Figure 11.39. a) Diagonal fulcrum line passing through the terminal abutments of teeth 33 and 45.
Figure 11.39. a) Diagonal fulcrum line passing through the terminal abutments of teeth 33 and 45.
Figure 11.39. b) Metal framework design.
Figure 11.39. b) Metal framework design.

 

Case 40. Şekil 11.40

Case 11.40. a) Cl I: Asymmetric fulcrum line passing through the terminal abutments of teeth 35 and 45.
Case 11.40. a) Cl I: Asymmetric fulcrum line passing through the terminal abutments of teeth 35 and 45.
Case 11.40. b) Metal framework design.
Case 11.40. b) Metal framework design.

Mandibular Kennedy Cl I modifications


Case 41. Figure 11.41

Figure 11.41. a) Cl I Mod 1: Diagonal fulcrum line passing through the terminal abutments of teeth 34 and 45.
Figure 11.41. a) Cl I Mod 1: Diagonal fulcrum line passing through the terminal abutments of teeth 34 and 45.
Figure 11.41. b) Metal framework design.
Figure 11.41. b) Metal framework design.

Case description and design parameters

Case classification:
Two distal extension and one tooth-supported edentulous areas; Class I Mod 1

Support areas:
Tooth support: Diagonal fulcrum line passing between terminal abutments of teeth 34 and 45
Occlusal rests: 34 and 45 (MO), cingulum rests: 33 and 43
Secondary support: Cingulum rests; 33 and 43
Tissue support: Mucosal support in distal extension edentulous areas

Guide planes:
Distal extension: 34 and 45 (D)
Tooth-supported: 33 and 43 (M)

Direct retainer:
Bar clasps: 34 and 45 (I bar; MB undercut, Modified T bar; DB undercut)
Reciprocation: 34 and 33; proximal plate combined with lingual plate, 43, 44, and 45; proximal plate combined with stabilizing arm

Indirect retainer:
Cingulum rests; 33 and 43 combined with lingual plate

Major connector:
Lingual plate; marginal gingiva exposed in the area of 43, 44, and 45

Minor connectors:
Elements connecting the approach arms of bar clasps, cingulum rests, and artificial teeth to the major connector

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

 

 

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

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