Minor connectors connect components like clasps, retainers, and denture bases to the major connector. They transmit stresses evenly to avoid concentrating loads. There are four types: those connecting clasps, indirect retainers, denture bases, or serving as approach arms for bar-type clasps. Forms include latticework, meshwork, or beads/wires. Minor connectors should be located in interdental embrasures when possible and conform to the embrasure shape and anatomy.
Prosthodontics seminar 3rd stage University of Anbar College Of Dentistry
Created By Mohammed Amer Hekma
Supervised by: Dr Osama Abdul Rasool Hammoodi
References
• FUNDAMENTALS OF REMOVABLE PARTIAL PROSTHODONTIC DESIGN by Kenneth R. McHenry, D.D.S., M.S and Terrence McLean, D.D.S.
• Stewart's Clinical Removable Partial Prosthodontics, Fourth Edition by Rodney D Phoenix, D.D.S, M.S, David R Cagna, D.M.D, M.S and Charles F DeFreest, D.D.S
• McCRACKEN’S REMOVABLE PARTIAL PROSTHODONTICS, TWELFTH EDITION BY Alan B. Carr, D.M.D, M.S, and David T. Brown, DDS, MS
Prosthodontics seminar 3rd stage University of Anbar College Of Dentistry
Created By Mohammed Amer Hekma
Supervised by: Dr Osama Abdul Rasool Hammoodi
References
• FUNDAMENTALS OF REMOVABLE PARTIAL PROSTHODONTIC DESIGN by Kenneth R. McHenry, D.D.S., M.S and Terrence McLean, D.D.S.
• Stewart's Clinical Removable Partial Prosthodontics, Fourth Edition by Rodney D Phoenix, D.D.S, M.S, David R Cagna, D.M.D, M.S and Charles F DeFreest, D.D.S
• McCRACKEN’S REMOVABLE PARTIAL PROSTHODONTICS, TWELFTH EDITION BY Alan B. Carr, D.M.D, M.S, and David T. Brown, DDS, MS
Impression for distal extension bases /certified fixed orthodontic courses b...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
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Fixed prosthodontic treatment can offer exceptional satisfaction for both patient and the dentist. Fixed Prosthodontics can transform an unhealthy, unattractive dentition with poor function into a comfortable, healthy occlusion capable of giving years of further service while greatly enhancing esthetics.
Nothing is more important in the construction of fixed partial dentures than an adequate diagnosis and a well-devised treatment plan. Although these two subjects are usually considered together. Astute dentists must recognize their subtle differences. Diagnosis is an evaluation of the condition of the patient when he presents for treatment. Treatment planning concerns the treatment procedures by which the dentist will restore the patient to an optimum state of dental health.
Impression for distal extension bases /certified fixed orthodontic courses b...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Fixed prosthodontic treatment can offer exceptional satisfaction for both patient and the dentist. Fixed Prosthodontics can transform an unhealthy, unattractive dentition with poor function into a comfortable, healthy occlusion capable of giving years of further service while greatly enhancing esthetics.
Nothing is more important in the construction of fixed partial dentures than an adequate diagnosis and a well-devised treatment plan. Although these two subjects are usually considered together. Astute dentists must recognize their subtle differences. Diagnosis is an evaluation of the condition of the patient when he presents for treatment. Treatment planning concerns the treatment procedures by which the dentist will restore the patient to an optimum state of dental health.
Minor connectors /certified fixed orthodontic courses by Indian dental academy Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
Indian Dental Academy: will be one of the most relevant and exciting training
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professionals who wish to advance in their dental practice,Offers certified
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Minor connectors & rests & rest seats/ dental implant coursesIndian dental academy
Description :
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Minor connectors & rests & rest seats1/endodontic coursesIndian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Minor connectors & rests & rest seats./ dental education in indiaIndian dental academy
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Minor connectors & rests & rest seats /certified fixed orthodontic courses by...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
A precise and summarized presentation on Mandibular Major Connector's with vivid pictures and sketches.
This includes various contents like what different types of connectors are explained precisely with their characteristics and location, blocking and relief & how they look like on casts.
Hope this presentation helps you understand the concept
by Dr. Ishaan Adhaulia
CONTENTS
INTRODUCTION
TERMINOLOGIES
REQUIREMENTS OF MAJOR CONNECTORS
FUNCTIONS OF MAJOR CONNECTORS
NOMENCLATURE
TYPES OF MAJOR CONNECTORS
CONTENTS
MAXILLARY MAJOR CONNECTORS
SUMMARY
REVIEW OF LITERATURE
REFERENCES
INTRODUCTION
When a prosthesis that can be removed from the mouth is used, the prosthesis must extend to both sides of the arch.
This enables transfer of functional forces of occlusion from the denture base to all supporting teeth and tissues within an arch for optimum stability.
It is through this cross-arch tooth contact, which occurs at some distance from the functional force, that optimum resistance can be achieved
This is most effectively accomplished when a rigid major connector joins the portion of the prosthesis receiving the function to selected regions throughout the arch.
A major connector combines all other components of an RPD so that the partial denture acts as one unit.
Thus, functional loads can be distributed to all abutment teeth, and cross-arch stabilization can be provided.
In addition, in distal extension RPDs, forces can be distributed between both the abutment teeth and the mucosa by unification of the direct retainers with the denture base.
TERMINOLOGIES
MAJOR CONNECTOR- GPT 9
The part of a removable partial denture that joins the components on one side of the arch to those on the opposite side.
CROSS-ARCH STABILIZATION :
Resistance against dislodging or rotational forces obtained by using a partial removable dental prosthesis design that uses natural teeth on the opposite side of the dental arch from the edentulous space to assist in stabilization
REQUIREMENTS
To function effectively and minimize potentially damaging effects, all major connectors must
1. Be rigid
2. Provide vertical support and protect the soft tissues
3. Provide a means for obtaining indirect retention where indicated
4. Provide a means for placement of one or more denture bases
5. Promote patient comfort
RIGIDITY
PROVIDE VERTICAL SUPPORT AND PROTECT THE SOFT TISSUES
The second fundamental requirement of a major connector is that it must not permit impingement upon the free gingival margins of the remaining teeth.
The marginal gingivae are highly vascular and susceptible to injury from sustained pressure.
For this reason, care should be exercised during the design and fabrication of removable partial dentures.
In the maxillary arch, the borders of a major connector should be located at least 6 mm from the free gingival margins.
The borders should run parallel to the gingival margins of the remaining teeth.
If the gingival margins must be crossed, they should be crossed at right angles to minimize coverage of the delicate marginal tissues
Where the major connector crosses a gingival margin, relief (le, space) must be provided between the metal and soft tissues.
If relief is not provided, inflammation of the soft tissues will result.
PROVIDE A MEANS FOR OBTAINING INDIRECT RETENTION WHERE INDICATED
It is important to note that
Minor connectors. Preclinical Removable Partial Denture.pptradsa3
Minor connector is a rigid component that joins the major connector or denture base to the other components of the partial denture such as rests, indirect retainers and clasps.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
3. DEFINITION
“A minor connector is defined as the connecting link between
major connector or base of a removable partial denture and
other units of prosthesis, such as clasps indirect retainers and
occlusal rests”
(-GPT)
Connects components to the major connector
Direct retainer
Indirect retainer
Denture base
4. FUNCTIONS
connects the major connector to the other parts like
clasps,rests, indirect retainer and denture bases.
transmits stresses evenly to all components so that there
is no concentration of load at any single point.
transmits the force acting on prosthesis to the edentulous
ridge and the remaining natural teeth.
5. FORMS AND LOCATIONS
Sufficient bulk to be rigid and transfer of functional stresses to supporting
teeth and tissues.
Minor connector contacting axial surface of abutment teeth should not
be located on convex surface, instead should be located on the
embrasure.
Should confirm to the interdental embrassure.
Should be thickest towards the lingual surface, tapering towards the
contact area.
Deepest part of interdental embrasure should have been blocked out to
avoid interference during placement and removal,
When a minor connector contacts tooth surfaces on either side of the
embrassure in which it lies,it should be tapered to the teeth.
6. Should form right angle with major connector so that the gingival crossing
is abrupt and covers as little gingival tissue as possible
Sharp angle should be avoided
Whenever possible, the minor connector of a removable partial denture is
located in the interdental embrasure.
Minor connector should be wide enough to use the guiding plane to the
fullest advantage.
7. GUIDING PLANE
Guiding planes are parallel surfaces of abutment teeth that direct the
insertion and removal of partial denture.
-the surface of tooth contacted by proximal plate
(*proximal plate: surface of minor connector which contacts the tooth)
-are formed on the proximal or axial surface of teeth
-Function: to limit the path of insertion and improve the stability of
prosthesis
8. TYPES
4 types
1. Minor Connector that joins Clasp Assembly to major connector
2. Joins an indirect retainer or Auxillary Rest to the major connector
3. Joins the Resin Denture Base to the Major Connector
4. Serves as approach arm for Bar type Clasp
9.
10. 1. Minor Connector that joins Clasp
Assembly to major connector
Should be rigid to support the active component of the partial
denture,the retentive clasp.
Support the component of the prosthesis that prevents vertical
movement towards the tissue(Rest).
Located on proximal surfaces of teeth adjacent to edentulous
areas.
Should be broad buccolingually but thin mesiodistally.
If clasp assembly is not being placed on a tooth adjacent to an
edentulous space,minor connector must be positioned in
embrassure between two teeth.
Never position on convex lingual surface of a tooth.
11. 2. Minor Connector that joins an indirect
retainer or Auxillary Rest to the major
connector
Arises from the major connector.
Form a right angle with major connector.
Designed to lie in the embrassure between teeth to
disguise its bulk as much as possible.
12. 3. Minor Connector that Joins the Resin
Denture Base to the Major Connector
REQUIREMENTS
-Must be strong enough to anchor the denture
base
-Rigid enough to resist breakage or flexing.
-In maxillary arch-distal extension base-minor
connector – tuberosity.
-Mandibular distal extension base-two thirds the
length of edentulous ridge
13. Available in 3 Forms:
1. Of Open (latticework) construction
2. Of mesh construction
3. Bead ,wire,or nail head minor connectors
14. 1. Open Construction(Lattice work)
Consists of LONGITUDINAL and TRANSVERSE struts of metal(12,16 gauge) that
forms ladder like network
In Mandibular arch – one strut Buccal ,other – Lingual.
In Maxilla one strut Buccal – border of major connector – second strut.
Smaller struts connect the two struts and form the lattice work.
Longitudinal struts avoided on the crest of ridge as they interfere with
artificial teeth arrangement.(can produce cleaving action on the denture
base)
Transverse struts should be placed so that they do not interfere with tooth
placement
Relief space given for both lattice work and mesh work minor connectors.
(Acrylic denture base will be formed in this space)
Locking of acrylic resin provides retention of denture base. Used – multiple
teeth replacements.
15. 2. Meshwork
Thin sheet of metal with multiple small holes that extends over crest of
residual ridge to the buccal,lingual and posterior limits.
Used for replacement of multiple teeth.
Major drawback– difficult to pack acrylic resin.
Does not provide a strong attachment for denture base.
CAST STOP:
-Integral parts of minor connectors-prevents bending of minor connector
towards the cast in the distal extension denture base.
-To prevent bending, a small area at free end of minor connector should
contact master cast – cast stop
-Provide stability for frame work during the stages of transfer and
processing.
-Prevents distortion of framework during acrylic resin processing
-Engage buccal and lingual slopes for stability.
16. Another integral part of minor connector designed to retain acrylic
denture base is similar to tissue stop but serves different purpose.
Located distal to the terminal abutment and is continuation of the
minor connector contacting the guiding plane.
To establish a definitive finishing index stop for acrylic resin base
after processing.
17. Fabrication
Removing approximately 2 square mm of the relief wax
used to create space beneath the lattice work or mesh from
the point where the posterior end of minor connector
crosses the centre of the ridge.
During waxing this little depression is waxed as a projection
of latticework or mesh.
18. After casting this projection contacts the edentulous ridge
of the cast and prevents frame work from being distorted
during acrylic packing.
19. Bead wire,or Nail head retention
(Minor connector)
Metal denture base
No relief provided.
Attached to outer or superior surface of metal base.
Retention by projections of metal on this surface.
Projections may be – beads,wires,or nail heads.
Denture base – hygenic because of better soft tissue
response to metal.
20. Shortcomings –
Difficult to adjust metal base.
Cannot be adequately relined.
Weakest attachment of 3 types.
“Should be used on tooth-supported,well healed ridges when interarch space is
limited.”
21. Attachment to major connector
Acrylic resin minor connector must be joined to major
connector with sufficient bulk to avoid fracture.
Must join in a smooth,event joint.
Irregularity between surface irritates tongue or mucosa of
the ridge.
Acrylic resin– butt joint must be made on both internal
and external surfaces of the major connector.
22. For metal base minor connector – single butt joint .
Butt joints – finish lines.
Outer aspect – external finish line.
Internal or tissue side – internal finish line.
23. Finish lines
Finishing line junction with major connector– angle not
greater than 90 degree.
Finish line located too far medially– natural contour of
palate altered by thickness of acrylic resin.
24. Too far buccally– difficult to create a natural contour of
acrylic resin on lingual surface of artificial teeth.
90 degree butt-type joint given for junction of minor
connectors and bar-type direct retainers.
25. Internal finish lines
Formed from relief waxes used over edentulous ridge on
master cast.
24-26 guage thick.
Margins of relief wax – internal finish line.
Ledge created by wax – sharp and define
26. External finish lines
Sharp and definite and should be slightly undercut to help lock
acrylic resin securely to major connector.
Angle the finish line forms with major connector – less than 90
degree.
27. Should extend on to the proximal surface of teeth
adjacent to edentulous space.
Finish line begins at lingual extent of rest seat and
continues down the lingual aspect of minor connector on
proximal surface of the tooth.
28. 4. Minor connector that serve as approach
arm for vertical projection or bar-type clasp
Only non rigid minor connector.
Supports a direct retainer that engages an undercut on a tooth from
below.
Approaches tooth from gingival margin.
Should be smooth,even and taper from its origin to its terminus.
Must not cross a soft tissue undercut.
Considered in great depth when direct retainers are used.