A study compared the radiological bone loss and survival outcomes of teeth adjacent to dental implants (TAIs) with non-adjacent teeth (TNIs) of similar type and baseline condition. The analysis, which included 348 implants in 233 patients, found greater bone loss in TAIs than in TNIs (mean: 4.3% vs 3.1%). TAIs also required new crown restorations significantly more often than TNIs (14.4% vs 7.3%), although there were no significant differences in root canal therapy rates. In addition, TAIs showed lower 5-year survival rates than TNIs (88.6% vs 93.6%).
While implant adjacency exhibited only a limited association with tooth survival, it had a stronger association with restorative factors. Root fracture and caries were the most common causes of TAI loss. These findings suggest that teeth adjacent to dental implants experience higher rates of bone loss and restorative interventions, along…
