Evaluation of mandibular posterior single implants with two different surfaces: a 5-year comparative study.

Area of Science:

• Dental Implantology
• Oral Surgery
• Biomaterials Science

Background:

• Anatomic and biomechanical challenges in the mandibular posterior region can compromise single implant success.
• Implant fixture design and surface modifications aim to enhance osseointegration and long-term stability.
• This study investigates the efficacy of two implant surface treatments in the mandibular molar area.

Purpose of the Study:

• To evaluate the cumulative survival rate (CSR) of sand-blasted, large-grit, acid-etched (SLA) and anodized (ANO) single implants in the mandibular molar region.
• To identify factors influencing the success of these implants, including surface treatment, position, length, and diameter.

Main Methods:

• A retrospective analysis of 193 SLA and 112 ANO single implants placed in the mandibular molar area between 2001 and 2006.
• Life-table analysis was used to calculate 1- to 6-year CSR for both implant groups.
• Chi-squared tests were employed to compare associated factors like surface treatment, position, and dimensions.

Main Results:

• The SLA group achieved a CSR of 98.96% (2 failures out of 193 implants).
• The ANO group demonstrated a CSR of 96.43% (4 failures out of 112 implants).
• No statistically significant differences were found concerning surface treatment, implant position, length, or diameter.

Conclusions:

• Mandibular posterior single implants exhibit a high CSR, proving to be a reliable treatment modality.
• The success of these implants is not significantly affected by surface treatment, position, length, or diameter.
• Single implants are an effective option for replacing mandibular molars despite anatomical limitations.