Wound Healing in the Tissues of the Periodontium following Periradicular Surgery. III. The Osseous Excisional Wound

By Harrison JW.

Date: 12/1991
Journal: JOE

Summary:

•Purpose: To describe the osseous response to excisional wounding at postsurgical intervals from 1-28 days.

•N= 4 rhesus monkey

Matrials and method: 

•Six mucoperiosteal flaps were reflected in the anterior and posterior sextants; excisional wound was made in interdental bone to the depth of the cutting rounded head of the bur in high-speed handpiece.

•The soft and osseous tissues were frequently irrigated with sterile saline and flaps were reapproximated and stabilized by interrupted sutures.

•Surgical procedures were scheduled to provide postsurgical periods of 1 to 4 days and 14 and 28 days.

Most highlighted Results: 

* 1-3 days: coagulum filled the excisional defects.

* 4 days: endosteal tissues occupied medullary spaces,

*14 days: woven bone trabeculae occupied 4/5 the defect,

*28 days: woven bone trabeculae more mature and occupied total area of the osseous defect.

– Damage of osseous tissues during excisional wounding can be reduced with (round burs, high speed,wtaer, shaving tech., min. pressure)

Clinical significance:

•No evidence of resorption (osteoclastic activity) on basophilic zone (produced by H.S. burs) in cortical or trabecular bone and a new bone matrix will be formed directly on devitalized bone surfaces.