minor connectors in rpd

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By: hrishikeshkarpe3 (17 month(s) ago)

most of the doubts are clear after reading this PPT once again at home thank u sir

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Minor Connectors in Cast Partial Dentures : 

Minor Connectors in Cast Partial Dentures P V Badwaik

Minor Connectors : 

Minor Connectors The connecting link between the major connector or base of a removable partial denture & other units of the prosthesis, such as clasps, indirect retainers & occlusal rests Minor connectors join the major connector with other parts of the RPD.

FUNCTION : 

FUNCTION To join the parts of the RPD to the major connector so that the prosthesis acts as a single unit rather than the components acting individually. This way forces applied to one part of the RPD are transmitted to other parts, and are dissipated by all teeth and tissues contacted by rigid parts of the prosthesis, rather than just by those where the force is applied. Minor connectors have other functions which are listed in the description of the various types.

TYPES : 

TYPES There are four types of minor connectors based on their location and function: (1) proximal, (2) embrasure, (3) surface, (4) denture base retention mechanism. The denture base is also a minor connector since it attaches the prosthetic teeth to the denture base retention minor connector and thus to the major connector, but will be discussed in another chapter

types : 

types Join the clasp assembly to the major connector Join indirect retainers or auxiliary rests to the major connector Join the denture base to the major connector Serve as an approach arm for a vertical projection or bar-type

Minor connector that Join clasp assembly to the major connector : 

Minor connector that Join clasp assembly to the major connector It must be rigid They support the component of prosthesis that prevents vertical movement toward the tissue They must have sufficient bulk to ensure rigidity. Bulk must be concealed or it will irritate tongue Generally located on proximal surfaces of teeth adjacent to edentulous areas – broad buccolingually but thin mesiodistally

Minor connector that Join indirect retainers / auxiliary rests to major connector : 

They should form a right angle with the major connector – but the junction should be gentle curve It should be designed to lie in the embrasure between to disguise its bulk as much as possible Minor connector that Join indirect retainers / auxiliary rests to major connector

Minor connectors that join denture base to major connector : 

Minor connectors that join denture base to major connector Latticework construction Mesh construction Bead, wire, or nail-head minor connectors (used with a metal base) They must be strong to anchor the denture base securely They must be rigid enough to resist breakage or flexing, & They interfere as little as possible with arrangement of teeth In maxillary arch – extend to cover tuberosity In mandibular arch – extend to 2/3rd the length of edentulous ridge

Open Latticework construction : 

Open Latticework construction Consists of 2 struts of metal (12-16 gauge) Smaller struts usually 16 gauge is used to connect the two struts – according to teeth arrangement Strongest

Mesh construction : 

Mesh construction Multiple holes Difficult to pack acrylic Weaker attachment

Tissue stop : 

Tissue stop Provision must be made to stabilize framework 2 square mm Prevents distortion

Bead, wire, or nail-head minor connectors : 

Bead, wire, or nail-head minor connectors It is hygienic – better tissue response But it is weakest Only in tooth supported cases, Well healed ridges

Attachment to major connector : 

Attachment to major connector Internal finish lines

Slide 14: 

External finish line Attachment to major connector

Minor connectors that serve as approach arm for vertical projection or bar-type clasp : 

Minor connectors that serve as approach arm for vertical projection or bar-type clasp

TYPES : 

TYPES There are four types of minor connectors based on their location and function: (1) proximal, (2) embrasure, (3) surface, (4) denture base retention mechanism. The denture base is also a minor connector since it attaches the prosthetic teeth to the denture base retention minor connector and thus to the major connector SUMMARY

FUNCTION : 

FUNCTION To join the parts of the RPD to the major connector so that the prosthesis acts as a single unit rather than the components acting individually. This way forces applied to one part of the RPD are transmitted to other parts, and are dissipated by all teeth and tissues contacted by rigid parts of the prosthesis, rather than just by those where the force is applied. .