Hybrid Full-Arch Rehabilitation Using Conventional And Zygomatic Implants: A Short-Term Retrospective Analysis.

Area of Science:

• Oral and Maxillofacial Surgery
• Dental Implantology
• Prosthodontics

Background:

• Atrophic maxillae present significant challenges for dental implant rehabilitation.
• Zygomatic implants offer a solution for severe maxillary bone loss, often utilizing angled abutments.

Purpose of the Study:

• To evaluate the one-year outcomes of prosthetic rehabilitation in patients with atrophic maxillae using zygomatic implants with angled abutments.
• To assess implant and prosthesis survival rates, complications, and clinical indices.

Main Methods:

• Retrospective analysis of 35 patients with fixed-hybrid prostheses on zygomatic and conventional implants.
• Angled abutments (45, 52.5, 60 degrees) were used with zygomatic implants via an extrasinus approach.
• Success/survival rates, complications, Mucosal Seal Efficacy Evaluation (MSEE), modified PLaque Index (mPLI), modified Bleeding Index (mBI), and Zygomatic Implants Classification Level (ZICL) were assessed.

Main Results:

• 98 straight and 81 zygomatic implants were placed.
• Cumulative success rates were 100% for implants and 94.3% for prostheses.
• Biological complications included postoperative sinus opacity (7 patients) and sinus membrane perforation (2 patients). 95% of zygomatic sites achieved ZICL 0-1.

Conclusions:

• High implant survival (100%) and prosthesis survival (94.3%) were achieved at one year.
• No significant differences in clinical indices were observed among varying abutment inclinations.
• Zygomatic implants with angled abutments demonstrate a reliable treatment option for atrophic maxillae.