ADVANCED SURGICALTECHNIQUES Medical Assignment Help

ADVANCED SURGICAL TECHNIQUES

Guided Bone Regeneration

Guided bone regeneration is a process that allows bone growth while retarding the ingrowth of fibrous connec- Itive tissue .and epithelium. It is well recognized that most r bone defects will regenerate with new bone if the invao sion.of connective tissue fr.om adjacent soft tissue can be prevented. Guided bone regeneration uses a barrier that is placed over the bone defect and prevents fibrous tissue ingrowth while the bone underlying the barrier has time . to grow and fill the defect (Fig. 14-59). This technique is particularly useful in the treatment of bccal dehiscence,
where labiobuccal augmentation of bone is required Guided bone regeneration can be performed- simultaneously with implant placement or before stage L A variety of materials may serve as barriers to fibrous tissue
ingrowth. Ideal characteristics of a membrane are outlined in Box 14-7. Expanded p (Gore- Tex) is the most extensively tested material. Resorbable . materials are also now available, eliminating the necessityof removal.

 

FIG. 14-59 Various applications of guided bone regeneration. A, membrane and "filler material" such as allogeneic bone is used to augment the ridge. B, Same as in A except that an implant is placed simultaneously. C, The membrane is supported by screws that preserve the space beneath the graft to allow bone fill.

FIG. 14-59 Various applications of guided bone regeneration. A, membrane and “filler material”
such as allogeneic bone is used to augment the ridge. B, Same as in A except that an implant is placed
simultaneously. C, The membrane is supported by screws that preserve the space beneath the graft to
allow bone fill.

BOX 14-7

Characteristics of Ideal Membrane

• Effective
• Ease of handling
• Inexpensive
• Resorbable
• Tolerates exposure

 

 

 

 

 

 

Posted by: brianna

Share This