RIDGE CORRECTION

Alveoloplasty Tuberosity reduction Removal of tori• Maxillary• Mandibular

Removal of maxillary tuberosity and exostoses

Alveoloplasty

“Surgical recontouring of alveolar process”

Purpose to take care of bony projections, sharp crestal bone or undercuts

principles

Optimal ridge contour

Permit early construction of dentures

Preservation of alveolar bone

Broad alveolar ridge

Reduction irregularities

Rounding off sharp ridges

Preserve cortical bone as much as possible

Defer surgery 4-6 weeks in case of periodontitis

Types

1. Simple alveoloplasty2. Intraseptal alveoloplasty• dean’s alveoloplasty• Obwesenger’s modification

3. Post-extraction alveoloplasty

1) Simple alveoloplasty procedure

after single sitting multiple extraction

Compress buccal and lingual cortical plates with digital pressure

Trim sharp spicules if exist with bone ronger

Smoothened with bone file

2) Intraseptal alveoloplasty

• Dean’s interseptal alveoloplasty- Only done in maxillary

anterior region to reduce gross maxillary overjet

- Mostly done immediately after extraction of anterior teeth

• Obwesenger’s modification- Both labial and palatal

cortices are repositioned- Done when anterior

overjet is too gross that cannot be reduced by labial plate repositioning

3) Post-extraction Alveoloplasty

• Done in region where extractions are done at different times

• So in this case multiple areas will show sharp edges which are painful to touch

• Here crestal incision is taken and mucoperiosteal flap is elevated for trimming the sharp edges and subsequent suturing is done

Removal of palatal torus• Palatal tori usually present on midline of hard

palate• Composed of cortical bone and may have

cancellous component• Palatal tori may interfere with denture

retention

Indications:• Extremely large torus filling the palatal vault• Torus that extend beyond posterior dam area• Traumatized mucosa over torus• Deep bony undercuts that interfere with

denture insertion and stability• Interference with function• Psychological considerations (e.g:malignancy

phobia)

Removal of mandibular tori

• Torus mandibular is an exostosis found on lingual surface of mandible opposite the canine and premolar region

• Usually bilateral, maybe single, multiple or lobulated

Indications:• Tori causing lingual undercuts and interfere

with lingual flange extension of planned prosthesis

• When mucosal covering is ulcerated• Large tori interfering with speech and

deglutition

Maxillary tuberosity and exostosis removal

• Main reason for tubercle overgrowth - extraction of opposing mandibular 3rd molars and subsequent of supraeruption of maxillary 3rd molar, where remains as bony overgrowth after maxillary 3rd molar extraction

• Maxillary tubercle interfere with denture construction because it reduce inter-arch space

Torus reductions

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