Computer-Guided Ridge Split Yields 1.5° Angular Error vs 10° Freehand in 2-Year RCT

In an RCT of 22 patients, computer-guided ridge split and expansion for narrow maxillae drastically improved implant accuracy: angular deviation 1.45° vs 10.02° freehand (p<0.001). Guided group also had significantly less marginal bone loss over 2 years. Preliminary, single-oper…

• Randomized clinical trial, 22 patients (1:1), 2-year follow-up after simultaneous implant placement in horizontally deficient maxillary anterior ridges.
• At 3,6,12,24 months, freehand group showed 3-4x higher marginal bone loss (p<0.001); guided approach preserved ridge width and enhanced peri-implant defect fill.
• Limitations: small sample size, single operator, mid-term follow-up; findings are preliminary and require multicenter validation.

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