Reamer-scraping and implant-pushing technique for transcrestal sinus floor elevation

Area of Science:

• Dental Implantology
• Oral and Maxillofacial Surgery
• Regenerative Dentistry

Background:

• Insufficient bone height in the posterior maxilla often requires bone augmentation for dental implant placement.
• Existing transcrestal maxillary sinus elevation techniques typically necessitate specialized surgical instruments.
• A simpler, more accessible method for sinus floor elevation is clinically desirable.

Purpose of the Study:

• To introduce and evaluate a novel transcrestal maxillary sinus elevation technique.
• To assess the efficacy and safety of using built-in implant reamers for sinus elevation.
• To determine the bone gain and clinical outcomes of this simplified technique.

Main Methods:

• A new transcrestal sinus elevation technique was developed utilizing the reamers of standard implant systems.
• The technique involves using reamers to scrape residual bone and the implant to lift the sinus membrane.
• A one-year follow-up study was conducted on 146 patients receiving 175 implants.

Main Results:

• The technique demonstrated ease of operation and time efficiency with a low rate of sinus membrane perforation.
• Significant endo-sinus bone gain was achieved: 5.00 mm (3-5 mm residual bone height) and 2.10 mm (5-8 mm residual bone height).
• Achieved bone gain met clinical requirements for dental implant stability.

Conclusions:

• This novel transcrestal maxillary sinus elevation technique is effective and simplifies the augmentation procedure.
• The method utilizes existing implant system components, reducing the need for specialized tools.
• The technique is suitable for widespread clinical application in dental implantology.