MANDIBULAR EDENTULOUS FOUNDATION

INDIAN DENTAL ACADEMY
Leader in continuing dental education
www.indiandentalacademy.com
...
MANDIBULAR EDENTULOUS FOUNDATION
1. Residual alveolar ridge
2. Labial Frenum
3. Buccal frenum
4. Labial vestibule
5. Bucca...
1. Labial Frenum:
It is a fibrous band covered
by

mucous

membrane

extending from labial aspect
of residual alveolar rid...
• 2.      Labial Vestibule:

• The portion of the oral
cavity bounded on one
side
by
the
teeth,
gingival and alveolar
ridg...
Boundaries:
1. Labial aspect of residual alveolar
ridge
2. Muco labial alveolar fold.
3. Orbicularis oris muscle (Lip)
The...
• 3.   Buccal Frenum:
• Single or multiple folds of
mucous
membrane
extending from buccal
mucous membrane and
reflects tow...
• 4. Buccal Vestibule:
• The portion of the oral cavity
bounded on one side by the
teeth, gingival, and alveolar
ridge (in...
•

5. Buccal shelf area:

• Bounded
laterally
by
external oblique ridge and
internally
by
slope
of
residual ridge. Bone in...
• 6. External oblique ridge:
• It is a smooth ridge on the
buccal surface of the body of
the mandible that extends
from th...
• 7. Retromolar pad:
• A
mass
of
tissue
comprised
of
nonkeratinised
mucosa
located posterior to the
retromolar papilla and...
• Pear Shaped Pad: The most distal extension
of attached keratinised mucosa overlying the
mandibular ridge crest formed by...
•  8.  Lingual frenum:
• This
frenum
overlies
genioglossus muscle, which
originates
from
superior
genial
tubercule.
Exhibi...
•   9. Sub-lingual fold:
• The crescent shaped area
on the floor of the mouth
following the inner wall of
the mandible and...
• 10.  Mylohypoid muscle:
• It forms muscular floor of
the mouth. Arises from the
mylohyoid ridge and rises
progressively ...
•    11. Retromylohoid space:
• An anatomic area in the
Alveololingual
sulcus
just
lingual to the retromolar pad
bounded a...
Boundaries:
•Anteriorly – Mylohoid ridge
•Posteriorly – Retromylohoid curtain, which is
formed by superior constrictor mus...
12. Residual ridge:
The portion of the
alveolar process and
its soft tissue covering
that remains after the
removal of tee...
www.indiandentalacademy.com
Thank you
www.indiandentalacademy.com
Leader in continuing dental education

www.indiandentalacademy.com
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Mandibular edentulous foundation / /certified fixed orthodontic courses by Indian dental academy

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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

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Mandibular edentulous foundation / /certified fixed orthodontic courses by Indian dental academy

  1. 1. MANDIBULAR EDENTULOUS FOUNDATION INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  2. 2. MANDIBULAR EDENTULOUS FOUNDATION 1. Residual alveolar ridge 2. Labial Frenum 3. Buccal frenum 4. Labial vestibule 5. Buccal vestibule 6. Buccal shelf 7. Retromolar pad 8. Retromylohyoid sulcus 9. Alveololingual sulcus 10. Lingual frenum www.indiandentalacademy.com
  3. 3. 1. Labial Frenum: It is a fibrous band covered by mucous membrane extending from labial aspect of residual alveolar ridge to the lower lip. It has no muscle attachment and is inserted in vertical direction. It is best demonstrated by forward pull of lip. It is accommodated by a groove in the mandibular denture. www.indiandentalacademy.com
  4. 4. • 2.      Labial Vestibule: • The portion of the oral cavity bounded on one side by the teeth, gingival and alveolar ridge (in the edentulous mouth the residual ridge) and on the other side by lips anterior to the buccal frenula. www.indiandentalacademy.com
  5. 5. Boundaries: 1. Labial aspect of residual alveolar ridge 2. Muco labial alveolar fold. 3. Orbicularis oris muscle (Lip) The labial flange of the mandibular denture occupies this space. www.indiandentalacademy.com
  6. 6. • 3.   Buccal Frenum: • Single or multiple folds of mucous membrane extending from buccal mucous membrane and reflects towards the slope of the crest of alveolar mucosa distal to canine region. Reflection is in anterior posterior direction. It overlies depressor anguliorismusclewww.indiandentalacademy.com .
  7. 7. • 4. Buccal Vestibule: • The portion of the oral cavity bounded on one side by the teeth, gingival, and alveolar ridge (in edentulous mouth residual ridge) and on the lateral side by the cheeks posterior to the buccal frenum. It overlies fibres of buccinator muscle. Buccal flange of the mandibular denture occupies this space. www.indiandentalacademy.com
  8. 8. • 5. Buccal shelf area: • Bounded laterally by external oblique ridge and internally by slope of residual ridge. Bone in this area is very dense and is placed horizontal to stress land. Forces can thus be directed more nearly at right angles to buccal shelf than any other area of support. It is called as “primary Stress Bearing” area. www.indiandentalacademy.com
  9. 9. • 6. External oblique ridge: • It is a smooth ridge on the buccal surface of the body of the mandible that extends from the anterior border of the ramus with diminishing prominence downward and forward to the region of mental foramen. www.indiandentalacademy.com
  10. 10. • 7. Retromolar pad: • A mass of tissue comprised of nonkeratinised mucosa located posterior to the retromolar papilla and over lying loose glandular connective tissue. This freely movable area should be differentiated from the pear shaped pad. www.indiandentalacademy.com
  11. 11. • Pear Shaped Pad: The most distal extension of attached keratinised mucosa overlying the mandibular ridge crest formed by the scarring pattern following extraction of the most posterior molar. It should be differentiated from retromolar area. • Retromolar pad contains fibres pterygomandibular raphae, fibres of superior pharyugeul constrictor, and buccinator muscles; fibres of temporal tendon and glandular tissue. It must be covered by the denture base to aid in stability. www.indiandentalacademy.com
  12. 12. •  8.  Lingual frenum: • This frenum overlies genioglossus muscle, which originates from superior genial tubercule. Exhibit differing configurations in width and height. Surgical intervention is indicated when it interferes with border extension and stability of mandibular denture. Also in case of tongue tie (Restricted tongue movements). www.indiandentalacademy.com
  13. 13. •   9. Sub-lingual fold: • The crescent shaped area on the floor of the mouth following the inner wall of the mandible and tapering towards the molar regions. It is formed by the sublingual gland and Submandibular duct. • It is the fold of mucous membrane from the tongue to residual ridge www.indiandentalacademy.com
  14. 14. • 10.  Mylohypoid muscle: • It forms muscular floor of the mouth. Arises from the mylohyoid ridge and rises progressively on the body of mandible. Mylohyoid muscle influences the mid and anterior portions of interior border of the lingual flange. Length of the flange is determined by displaceability of the floor of the mouth and movements of the tongue. www.indiandentalacademy.com
  15. 15. •    11. Retromylohoid space: • An anatomic area in the Alveololingual sulcus just lingual to the retromolar pad bounded anteriorly by the mylohyoid ridge, posteriorly by retromylohyoid curtain, inferiorly by the floor of the alveololingual sulcus and lingually by the anterior tonsillar pillar when the tongue is in a relaxed position. • This space lies at the distal and of alveolo-lingual sulcus and provides bracing to the www.indiandentalacademy.com mandibular denture.
  16. 16. Boundaries: •Anteriorly – Mylohoid ridge •Posteriorly – Retromylohoid curtain, which is formed by superior constrictor muscle. •Laterally – Mandible and pterygo mandible raphae. •Lingually – anterior tonsillar pillar. •Inferiorly – Floor of alveolo lingual sulcus. www.indiandentalacademy.com
  17. 17. 12. Residual ridge: The portion of the alveolar process and its soft tissue covering that remains after the removal of teeth. www.indiandentalacademy.com
  18. 18. www.indiandentalacademy.com
  19. 19. Thank you www.indiandentalacademy.com Leader in continuing dental education www.indiandentalacademy.com

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