Bone dimensional changes after flapless immediate implant placement with and without bone grafting: Randomized...

Area of Science:

• Dental Implantology
• Periodontology
• Oral Surgery

Background:

• Alveolar bone resorption post-extraction poses challenges for immediate dental implants.
• Flapless immediate implant placement is a technique used to address this.
• Managing thin labial plates requires specific strategies.

Purpose of the Study:

• To evaluate vertical and horizontal bone changes after 1 year.
• To compare immediate implants with and without xenograft in thin labial plates.
• To assess the impact of bone grafting on alveolar ridge preservation.

Main Methods:

• Randomized clinical trial with 40 patients in the maxillary esthetic zone.
• Flapless immediate implant placement with or without xenograft bone graft.
• Cone beam computed tomography (CBCT) for pre-extraction and 1-year post-op measurements.

Main Results:

• Xenograft showed a trend towards increased horizontal gap fill (0.2 mm).
• Both groups experienced significant labio-palatal bone width reduction.
• Xenograft group had significantly less vertical bone change (1.1 mm less) at 5mm apical to the crest.

Conclusions:

• Immediate implants, with or without xenograft, effectively preserve alveolar bone dimensions.
• Bone formation labial to the implant is positively correlated with initial socket dimensions.
• Xenograft may offer benefits in reducing vertical bone loss, particularly at 5mm apical to the crest.