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1. MAJOR CONNECTORS
INDIAN DENTAL ACADEMY
Leader in continuing dental education
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2. MAJOR CONNECTORS
Major connector connects the parts of the prosthesis
located on one side of the arch with those on the
opposite side.
All major connectors should be
1. Rigid.
2. Provide vertical support and protect the soft tissue.
3. Provide a means of obtaining indirect retention where
indicated.
4. Provide an opportunity of positioning denture bases
where needed.
5. Maintain patient comfort.
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3. MAXILLARY MAJOR CONNECTOR
All maxillary major connector should have specially
prepared seal along all borders that contact soft tissue. This
seal forms a beading that will slightly displace the soft
tissue.the beading is scribed in the master cast before
duplication in investment material. It should have a depth
and width of approximately .5 to 1mm and should fade out
approximately 6mm from the gingival margin if the metal is
to continue up on the teeth.www.indiandentalacademy.com

4. TYPES OF MAXILLARY MAJOR CONNECTOR
Single posterior palatal bar.
Palatal strap.
Anteroposterior, or double, palatal bar.
Horseshoe, or U shaped connector.
Closed horseshoe, or anteroposterior palatal strap.
Complete palate. www.indiandentalacademy.com

5. SINGLE POSTERIOR PALATAL BAR.
Narrow half oval with its thickest point at the center.
Most difficult for the patient to adjust because to maintain
any degree of rigidity it has to be bulky.
Its use is limited to replacing one or two teeth on each
side of the arch.
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6. PALATAL STRAP
It consist of a wide thin band of metal that
crosses the palatal in a unobtrusive manner. It should
not e less than 8mmwide or its rigidity may be
compromised. Because it is located in three planes, it
offers great resistance to bending and twisting forces.
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7. ANTEROPOSTERIOR, OR DOUBLE, PALATAL
BAR.
The flat anterior bar is narrower than the palatal
strap. Its borders are positioned in the valleys between
the rugae crest. The posterior bar is half oval shape. The
two bars are joined by flat longitudinal elements on each
side of the lateral slopes of the palatal
It is used when the
anterior and posterior
abutment are widely
separated and in patients
with large palatal torus for
whom surgery has been
ruled out. www.indiandentalacademy.com

8. HORSESHOE, OR U SHAPED CONNECTOR
The horseshoe connector consist of a thin band
of metal running along the lingual surface of posterior
teeth and extending onto the palatal tissue for 6-8mm.
Anteriorly the metal normally covers the cingula of the
present teeth and extend on to the palate to cover the
entire rugae area.
The lateral borders should be
at the junction of the
horizontal and vertical slope
of the palate. It is used when
several anterior teeth are
been replaced.
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9. CLOSED HORSESHOE, OR ANTEROPOSTERIOR
PALATAL STRAP
It is a strong and rigid that may be used in most
maxillary partial denture design and is particularly
indicated when numerous teeth are to be replaced and
when a torus palatinus is present. The anterior strap
should be as far back in the rugae area as possible.
The posterior strap should be
as posterior as possible . The
circle effect of the anterior
and posterior straps
contribute to the rigidity of
the connector.
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10. COMPLETE PALATE
This provides the ultimate in rigidity and
support. The posterior border extend to the junction of
the hard and soft palate. The anterior border should be
kept 6mm from the marginal gingiva or must cover the
cingula of anterior teeth. This connector can be made
in three form.
All acrylic resin.
Combination metal and
acrylic resin.
All cast metal www.indiandentalacademy.com

11. MANDIBULAR MAJOR CONNECTOR
Relief should be routinely provided between the
mandibular major connector and the soft tissue to prevent
lacerating the friable and sensitive lingual mucosa.
Tissue that slopes towards the tongue require the greatest
amount of relief . Because of the need of relief, beading
is never indicated under mandibular major connector.
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12. TYPES OF MANDIBULAR MAJOR CONNECTOR
Lingual bar.
Lingual plate.
Double lingual bar or kennedy bar.
Labial bar.
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13. LINGUAL BAR
The most frequently used connector. The basic
form is half pear shaped with the broadest portion at
the inferior portion of the bar. At least 8mm of vertical
space is required between the active tissue and floor of
the mouth and the gingival margin of the teeth..
Positioning of the bar over an
under cut area of the lingual
surface of the ridge should be
avoided . Otherwise food
entrapment will cause
discomfort to the patient
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14. LINGUAL PLATE
This connector is basically a pear shaped lingual
bar with a thin solid piece of metal extending upward
from the superior border of the bar onto the lingual
surface of the teeth. The superior border of the plate must
be contoured to intimately contact the lingual surface of
the teeth above the cingula and to completely close of the
space between the teeth up to the contact point.
Indicated when the
remaining teeth have
lost much of their
periodontal support and
require splinting.
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15. DOUBLE LINGUAL BAR OR KENNEDY BAR
It differs from the lingual plate in that it has no sheet
of metal extending from below the superior border of the
plate to the pear shaped lingual bar.the lower bar is pear
shaped and upper bar should be half oval in cross
section.the bar should not run straight across the lingual
surface of the teeth but should dip from the contact point of
the teeth downward to the upper limit of the cingula.
The major disadvantage
being entrapment of food
debris.
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16. LABIAL BAR
This runs across the mucosa labial to the
mandibular teeth. It is half pear shaped. The only
indication being when lower anterior teeth are so
severely lingually inclined that a conventional lingual
major connector cannot be used . The bulk of the metal
distorts the lower lip and may cause discomfort to the
patient.
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17. Thank you
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