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Treatment of 

Osseous Defects

1. Osseous Resection

2. Debridement

3. Grafting

Dehiscence

Positive

Flat

Negative

Bony

Architecture

Infrabony Defect

The base of the pocket

is apical to the crest of 

the alveolar bone

Dr. Larry Wolff Periodontology III

Spring Semester, 2009School of Dentistry

University of Minnesota

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Infrabony Pocket(Classified according to

number of osseous walls)

• One osseous wall

• Two osseous walls

• Three osseous walls

Osseous Walls

  Three Two One

Osseous Walls - Combination

Crater (Two Osseous Walls)

Reversed (Negative) Architecture

Osseous Resection

Indications• Wide 3-wall defects

• Interproximal craters• Hemiseptums

• Furcations

• Thick alveolar bone

Dr. Larry Wolff Periodontology III

Spring Semester, 2009School of Dentistry

University of Minnesota

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Ostectomy

Shaping to ideal form

which may sacrifice

some supportive bone

Osteoplasty

Reshaping without

sacrificing supporting

bone

Osseous

Resection

Osseous Resection

Osseous Resection

Dr. Larry Wolff Periodontology III

Spring Semester, 2009School of Dentistry

University of Minnesota

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Ten days post-op

Bony Ledge Reduction - Caries Exposure

Osseous

Contouring

Dr. Larry Wolff Periodontology III

Spring Semester, 2009School of Dentistry

University of Minnesota

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Osseous

Surgery

Osseous Surgery

Dr. Larry Wolff Periodontology III

Spring Semester, 2009School of Dentistry

University of Minnesota

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