牙醫學(三)（包括齒內治療學、牙體復形學、牙周病學等科目及其相關臨床實例與醫學倫理）題庫下載題庫

(D)解釋:
來自Carranza原文:

Bone From Extraoral Sites

The use of fresh or preserved iliac cancellous marrow bone has been extensively investigated. This material has been used by orthopedic surgeons for years. Data from human and animal studies support its use, and the technique has proved successful in osseous defects with various numbers of walls. It has also been successful in furcations and even supracrestally to some extent.

However, because of numerous problems associated with its use, the technique is no longer in use.
Some of the problems were postoperative infection, bone exfoliation, seque...

(D)解釋:
來自Carranza原文:

Bone From Extraoral Sites

The use of fresh or preserved iliac cancellous marrow bone has been extensively investigated. This material has been used by orthopedic surgeons for years. Data from human and animal studies support its use, and the technique has proved successful in osseous defects with various numbers of walls. It has also been successful in furcations and even supracrestally to some extent.

However, because of numerous problems associated with its use, the technique is no longer in use.
Some of the problems were postoperative infection, bone exfoliation, sequestration, varying rates of healing, root resorption, and rapid recurrence of the defect. Other problems were increased patient expense and dificulty in procuring the donor material.