IL1 gene polymorphisms and unsuccessful dental implants.

Area of Science:

• Genetics
• Oral Health
• Biotechnology

Background:

• Dental implant failure is a significant clinical concern.
• Genetic predispositions may influence implant success rates.
• The IL1 gene cluster is implicated in inflammatory responses relevant to osseointegration.

Purpose of the Study:

• To investigate the association between IL1 gene cluster polymorphisms and dental implant failure in a Portuguese population.
• To determine if specific single nucleotide polymorphisms (SNPs) in IL1A and IL1B genes correlate with implant success or failure.

Main Methods:

• A case-control study involving 155 Portuguese subjects (100 with successful implants, 55 with failed implants).
• DNA extraction from oral mucosa scrapings.
• Polymerase Chain Reaction (PCR) used to identify SNPs at positions -889 of IL1A and +3953 of IL1B.

Main Results:

• The overall prevalence of the studied IL1 gene polymorphisms was 33.50%.
• Allele 1 of IL1B (62.20%) and IL1A (54.80%) were the most frequent.
• Dental implant success was associated with a negative Genetic Test for Periodontitis (TGP) result, while failure correlated with a positive TGP result.

Conclusions:

• Alleles 1 and 2 of both IL1A and IL1B genes showed a statistically significant association with dental implant success or failure.
• Tobacco and alcohol consumption did not demonstrate a statistically significant association with dental implant outcomes in this cohort.