Outfracture osteotomy on lateral maxillary wall as a modified sinus graft technique

Area of Science:

• Oral and Maxillofacial Surgery
• Regenerative Medicine
• Dental Implantology

Background:

• Atrophic maxillary posterior alveolar ridges present challenges for dental implant placement.
• Traditional sinus graft techniques may have limitations in complex anatomical situations.

Purpose of the Study:

• To evaluate the feasibility and efficacy of a new outfracture osteotomy sinus graft technique.
• To present an alternative to the conventional trapdoor sinus graft method.

Main Methods:

• Modification of the trapdoor technique to an outfracturing and readaptation method for the lateral sinus window.
• Application of the technique in cases with combined height/width deficiencies and anatomical complexities (sinus septum, thick walls).
• Utilizing the outfractured bony segment as a potential covering membrane.

Main Results:

• Successful outcomes in 40 cases across 34 patients, with no graft failures reported.
• Demonstrated excellent survival rates and functional performance of dental implants placed in grafted sites.
• The technique proved advantageous for complex anatomical challenges.

Conclusions:

• The outfracture osteotomy sinus graft is a viable and effective modification of existing techniques.
• This approach offers distinct advantages for treating atrophic maxillary ridges, particularly in complex cases.
• The modified technique provides excellent results as an alternative to the original trapdoor method.