Multicenter retrospective analysis of wide-neck dental implants for single molar replacement

Area of Science:

• Dental Implantology
• Prosthodontics
• Oral Surgery

Background:

• Molar tooth loss necessitates reliable replacement options.
• Dental implants offer a viable solution for restoring function and aesthetics.
• Wide-neck implants are designed to provide enhanced stability and prosthetic versatility.

Purpose of the Study:

• To assess the predictability of Straumann wide-neck dental implants for molar replacement.
• To evaluate the clinical performance and survival rates of these implants in molar sites.

Main Methods:

• A retrospective study of 499 single-tooth Straumann wide-neck implants placed in molar sites across 410 patients.
• Data collected from 6 clinicians in the United States over a mean loading period of 23 months.
• Implants were placed in both mandibular and maxillary arches.

Main Results:

• An overall cumulative survival rate of 98.4% was achieved (8 implant failures).
• Mandibular molar implants showed a 99.2% survival rate (3 failures), while maxillary molar implants had a 96.6% survival rate (5 failures).
• Implants placed with the bone-added osteotome procedure in the maxilla had a survival rate of 89% (5 failures).

Conclusions:

• Straumann wide-neck implants exhibit high predictability and survival rates for molar single-tooth replacement.
• Minimal restorative complications were observed, with no abutment loosening or fractures in cemented restorations.
• These implants represent a satisfactory option for restoring molars.