This document discusses different types of mandibular major connectors for removable partial dentures. It describes the structural requirements and functions of lingual bars, sublingual bars, Kennedy (double lingual) bars, cingulum bars, labial bars, and lingual plates. Key requirements for mandibular major connectors include providing cross-arch stabilization, avoiding impingement of tissues, and distributing forces broadly. The document also briefly discusses minor connectors and their functions in connecting parts of the prosthesis.
This seminar talks about the dental surveyor and it applications in relation to Removable Partial Dentures and it also talk about the principles of RPD design, difficulties and management of free end saddle. finally the altered cast impression technique or also called Applegate's technique.
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.
This seminar talks about the dental surveyor and it applications in relation to Removable Partial Dentures and it also talk about the principles of RPD design, difficulties and management of free end saddle. finally the altered cast impression technique or also called Applegate's technique.
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.
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.
Fixed partial dentures transmit forces through the abutments to the periodontium. Failures are due to poor engineering, the use of improper materials, inadequate tooth preparation, and faulty fabrication. Of particular concern to prosthodontist is the selection of teeth for abutments. They must recognize the forces developed by the oral mechanism, and resistance.
Successful selection of abutments for fixed partial dentures requires sensitive diagnostic ability. Thorough knowledge of anatomy, ceramics, the chemistry and physics of dental materials, metallurgy, Periodontics, phonetics, physiology, radiology and the mechanics of oral function is fundamental.
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
a detailed account of the principles of tooth preparation with main reference from Shillingburg
The presentation is available on request. Mail me at apurvathampi@gmail.com
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
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.
Fixed partial dentures transmit forces through the abutments to the periodontium. Failures are due to poor engineering, the use of improper materials, inadequate tooth preparation, and faulty fabrication. Of particular concern to prosthodontist is the selection of teeth for abutments. They must recognize the forces developed by the oral mechanism, and resistance.
Successful selection of abutments for fixed partial dentures requires sensitive diagnostic ability. Thorough knowledge of anatomy, ceramics, the chemistry and physics of dental materials, metallurgy, Periodontics, phonetics, physiology, radiology and the mechanics of oral function is fundamental.
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
a detailed account of the principles of tooth preparation with main reference from Shillingburg
The presentation is available on request. Mail me at apurvathampi@gmail.com
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
partial denture must have major connectors
there is types of mandibular major connectors
and maxillary major connectors
functions :
Make RPD as a one unit
Equal stress distribution at the parts of RPPD
Cross arch stabilization
If it rested on hard tissue give support (unless if it rested on soft tissue , relief must be done
requierments
Rigid to give equal distribution of forces
should be comfort to patient
shouldn't interference with movable tissue
shouldn't impingement of gingival margins (maxilla at least 6mm from margins mandible at least 3-4 mm from gingiva)
shouldn't have sharp edges or margins
Should be perpendicular at minor connector but with gentle curve
Avoid food impaction
designed to be self cleansable area
and we discuss these types briefly
*mandibular major connectors
Lingual bar
Double lingual bar ( lingual bar with a continuous bar indirect retainer)
labial bar (plate)
cingulum bar
sublingual bar
*maxillary major connectors
Anterior palatal bar
Posterior palatal bar
Middle palatal bar
Anterio posterior palatal bar (ring design )
Anterior palatal strap
Middle palatal strap
Anterio posterior palatal strap (closed horse shoe )
Complete plate
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
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4. Definition
It is that unit of the
partial denture to which
all other parts are
directly or indirectly
attached.
This component Provides
Cross-arch Stabilization.
5. 1. Join the component parts of RPD together.
2. They may contribute to the functions of
bracing and reciprocation.
Functions of mandibular
connectors
6. Structural Requirements for
Mandibular Major Connectors
1- Rigid and should provide
cross arch stabilization
and broad load
distribution.
2- Relieved to avoid settling
into the mucosa
3- A half-pear shape in cross
section.
7. Structural Requirements for Mandibular Major Connectors
4- The superior border of the lingual
bar should be placed 3-5 mm
5- The borders should run parallel to
the gingival margin
6- The inferior border should be
gently rounded above the moving
tissues of the floor of the mouth.
7- Impingement of gingival tissues
should be avoided.
8. Structural Requirements for Mandibular Major Connectors
The gingival margin should be relieved.
8-The lingual
plate should
be extends to
the cingulae of
the anterior
teeth
9. 9. Not Interfere or irritate the tongue.
10.Not alter the natural contour of the
lingual surfaces of the arch.
11.Not impinge on the oral tissues (tori),
when the restoration is placed, removed
or rotated during function.
10. 12.Cover no more tissues than necessary.
13.Not allow trapping of food.
14.Be made from an alloy compatible with oral
tissues.
11. TYPES OF MANDIBULAR MAJOR
CONNECTORS
Lingual bar.
Sublingual bar.
Double lingual bar.
(Kennedy bar)
Cingulum bar.
Labial bar.
PLATEBARS
Lingual plate
14. Half-pear shape in cross section, tapered superiorly with
the broader and thicker portion at the inferior border.
LINGUAL BAR
15. LINGUAL BAR
The inferior border should be gently rounded
above the moving tissues of the floor of the
mouth; to avoid irritation or injuring the
subadjacent tissues when the restoration moves
16. LINGUAL BAR
The bar should be
relieved sufficiently but
not excessively over the
underlying tissues.
Lingual tori are
generously relieved
when surgery is
contraindicated.
17. Function:
The lingual bar functions only as a major
connector. It does not provide neither support
nor indirect retention.
18. F
It does not provide neither support nor
indirect retention.
?????????Why
19. Disadvantages
* May attain some flexibility, specially if
they are poorly constructed or designed.
Contraindications:
- Inadequate space
- Extreme lingual inclination of lower
anterior teeth.
- High lingual frenular attachment.
- Bilateral torus mandibularis
- Undercut on the lingual side of the ridge
21. SUBLINGUAL BAR
Location and form:
• Extending over and parallel to the anterior floor of the
mouth.
• It has a tear drop configuration whose base is towards
the base of the tongue.
• It is relieved ( 26-30 gauge) from the floor of the mouth.
22. SUBLINGUAL BAR
• Insufficient depth of
alveololingual sulcus.
• Reduced height of the
alveolar ridge,
Contraindication
• Highly attached lingual
frenum.
Indications:
23. SUBLINGUAL BAR
• Well tolerated
• It permits exposure of the
gingival tissue
• Allows for proper cleaning.
• The under side of the tongue is
sparsely provided with tactile
receptors.
Advantages:
1-Requires functional impression.
2-Difficult in lab construction .
Disadvantages:
24. THE DOUBLE LINGUAL BAR
KENNEDY BAR
• A lingual bar and a cingulum
bar (Kennedy bar).
• Secondary lingual bar.
• Used to add to the strength
and rigidity of the denture
• Kennedy bar is neither a
major connector nor indirect
retainer by itself
25. KENNEDY BAR
Two supporting rests must be placed one on each end of
the Kennedy bar. These rests prevent settling of the bar during
function, thus preventing laceration of the gingiva and act as
indirect Retainers
26. • Allows natural stimulation
• stabilization
• Rigidity
• Proper distribution of the stresses
• Splinting of teeth.
• No gingival coverage..
• I.R. through its terminal rests.
Advantages of KENNEDY BAR
Disadvantages:
• Objectionable to the tongue
• Collect food
• Phonetic problems.
Contraindications: short clinical crowns or inclined
lingually and Not used with space anteriors
27. CINGULUM BAR
• Indicated where there is insufficient room for
the lingual bar
• The teeth should have good mesiodistal contact
with sufficient crown length.
• Marked lingual inclination of the anterior teeth
prevents the use of cingulum bar
28. LINGUAL PLATE
Most rigid mand. M. c.
Better bracing
Cross-arch stabilization
Splinting for weak teeth.
29. 1- The superior border should be
LINGUAL PLATE
a- Scalloped and projected to the
contact points between the
projections the border should not
exceed the middle third of the teeth.
b- Positively contacting the teeth.
c- As thin as possible.
2- It is relieved at the gingival margin.
3- It is provided with slots in case of diastema.
4- Lingual area should be surveyed to block out
undercuts.
30. Indications:
1- High floor of the mouth and high frenal attachment.
2- When future teeth replacement is anticipated.
3- Splinting of periodontally affected teeth.
Advantages:
1- The most rigid lower connector.
2- Can act as indirect retainer XX????.
3- Provides splinting if used in conjunction with labial bar.
Disadvantages:
1- Covers gingiva and teeth; so no gingival stimulation.
(Patient is instructed to massage the gingiva).
2- May contribute to caries and periodontal disease.
LINGUAL PLATE
31.
32. LABIAL BAR
• Thick and bulk than a lingual bar to
counteract the increased flexibility due to
increased length.
• Half-pear shaped with bulkiest potion
located inferiorly.
• Runs across the labial and buccal mucosa.
• Superior border tapered to soft tissue
located at least 4 mm below the gingival
margin.
Form and Location:
•Must be relieved over the canine eminence.
33. LABIAL BAR
When large lingual tori exist and surgery is
precluded.
i.e. obviates the need for surgical intervention
Indications:
With extreme lingual
inclination of mandibular
anterior teeth
35. Made thick because
of lacks of sufficient
rigidity.
Labial vestibular depth
must be adequate
especially in the presence
of gingival recession
LABIAL BAR
Disadvantages:
38. Connected by a hinge device at one end and a
locking device at the other end. Vertical minor
connectors arise from the labial bar, touch the anterior
teeth below the survey line
LABIAL BAR
41. Split Lingual Major Connector
A flexible
connector
used where some
stress release
from the
abutment teeth is
desired.
Split lingual Plate
42. Split Lingual Major Connector
A complex construction
More costly
Greater demands on plaque control
Less well tolerated by the patient.
Split lingual Bar
45. Minor Connectors
Definition:
Functions:
1- Connect different units with saddle
or major connector.
2- Transfer the effect of the connected
components to the other parts of
the denture.
3- Transfer functional stress to the
abutment teeth.
4- Provide bracing and sometimes
reciprocation.
It is the part of the partial denture, that
connects units of the prosthesis with either
the major connector or the denture base.
46. Minor Connectors
It is the part of the partial
denture, that connects
units of the prosthesis with
either the major connector
or the denture base.
Minor connectors
47. Requirements:
1. There should be a minimum of 5mm space
between any two neighboring minor
connectors.
2. They should be inconspicuous to the
tongue. Therefore they are placed on the
guiding planes of abutments or in the
embrasure between teeth.
3. They should join the major connector at
right angle to cover as little as possible of
the gingiva.
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