The effect of membrane exposure on lateral ridge augmentation: a case-controlled study

Area of Science:

• Dentistry
• Oral Surgery
• Regenerative Medicine

Background:

• The impact of membrane exposure on guided bone regeneration (GBR) for lateral ridge augmentation is not well-understood.
• This study investigates the effects of membrane exposure on GBR outcomes and subsequent implant placement.

Purpose of the Study:

• To evaluate the influence of bioresorbable matrix barrier exposure on lateral ridge augmentation using GBR.
• To compare bone width changes and implant success rates between groups with and without membrane exposure.

Main Methods:

• Retrospective analysis of 14 patients undergoing lateral ridge augmentation with allogeneic cancellous graft and a bioresorbable matrix barrier.
• Patients were divided into control (no exposure) and test (exposure within one week) groups.
• Bone width was measured before augmentation and after 4 months.

Main Results:

• Both groups achieved a significant increase in alveolar ridge width after 4 months.
• The control group showed a significantly greater mean alveolar ridge gain compared to the test group.
• Despite reduced gain in the test group, all 14 patients achieved successful implant placement.

Conclusions:

• Early exposure of the bioresorbable matrix barrier may compromise GBR results in lateral ridge augmentation.
• However, GBR with membrane exposure can still yield adequate bone width for dental implant placement.