Graftless sinus augmentation technique with contextual placement of implants: a case report

Area of Science:

• Dentistry
• Oral Surgery
• Biomaterials Science

Background:

• Graftless lateral approach sinus lifting is gaining acceptance for dental implant placement.
• Biomaterials have been used in bone regeneration since the 1970s for sinus lifts and defect filling.
• Clinicians increasingly favor graftless techniques for their satisfactory long-term implant survival rates.

Observation:

• A case report details a graftless sinus augmentation with simultaneous implant placement in a 38-year-old female patient.
• Equine collagen sponges were used as a scaffold, supporting the blood clot's role in bone formation.
• Implant stability was monitored using resonance frequency analysis, showing a gradual increase over six months.

Findings:

• The technique leverages the osteogenic potential of the subantral membrane and the scaffold effect of collagen sponges.
• The blood clot differentiated into osteoid and then bone tissue, promoting guided bone regeneration.
• Implant stability quotient values indicated stabilization between the fourth and sixth months post-surgery.

Implications:

• This graftless sinus augmentation technique appears highly predictable, based on osteoconductive principles.
• Proper management of peri-implant soft tissues, including increasing keratinized tissue, is crucial.
• The technique may represent a future gold standard for sinus lift and implant rehabilitation.