Are Bone Expansion Techniques Effective for Implant Placement in Narrow Alveolar Ridges?

Area of Science:

• Dental Implantology
• Oral Surgery
• Bone Augmentation Techniques

Background:

• Sufficient alveolar bone is critical for dental implant success.
• Augmenting residual maxillary alveolar ridges presents a common clinical challenge.
• Horizontal bone augmentation is often necessary for implant placement in edentulous sites.

Purpose of the Study:

• To compare ridge gain using osseodensification versus manual bone expanders.
• To evaluate bone expansion at immediate and 6-month postoperative intervals.
• To assess the efficacy of two bone expansion techniques in the maxilla.

Main Methods:

• A randomized study involving 8 patients and 14 maxillary implants.
• Group 1: Osseodensification technique for bone expansion.
• Group 2: Manual threaded expanders (bone spreaders) for bone expansion.

Main Results:

• The manual bone expanders group (Group 2) showed greater immediate postoperative ridge expansion.
• Significant bone remodeling and reduction in expansion gain were observed at 6 months postoperative.
• Osseodensification and manual expanders provided comparable outcomes at 6 months.

Conclusions:

• While manual bone expanders provide greater immediate expansion, the gains are not sustained long-term.
• Expansion techniques may be considered when more predictable horizontal bone augmentation methods are not viable.
• Further research into long-term stability of bone expansion techniques is warranted.