Bacteriological evaluation for one-and two-piece implant design supporting mandibular overdenture

Area of Science:

• Dental Implantology
• Bacteriology
• Prosthodontics

Background:

• Complete overdentures are a common prosthetic solution for edentulous patients.
• The choice of implant design can influence the surrounding tissue health.
• Evaluating the bacteriological impact of different implant types is crucial for long-term success.

Purpose of the Study:

• To compare the bacteriological effects of two-piece versus one-piece implants in complete overdenture cases.
• To assess the impact of implant design on the supporting structures around the abutments.

Main Methods:

• Ten completely edentulous male patients were randomly assigned to two groups.
• Group 1 received two-piece implants with a two-stage surgical technique.
• Group 2 received one-piece implants. Bacteriological changes around abutments were measured at insertion, 6, 12, and 18 months.

Main Results:

• Complete overdentures supported by one-piece implants exhibited a more favorable bacteriological profile.
• A significant difference in bacteriological changes was observed between the two implant types.

Conclusions:

• One-piece implants provide a better bacteriological effect in complete overdenture cases compared to two-piece implants.
• This suggests one-piece implants may contribute to improved peri-implant health in overdenture applications.