| dc.description.abstract | Background : The geriatric population is increasing in number throughout the world, especially in developed and developing countries. It is believed that as a person increases their age, the biological and metabolic processes slow down. As a consequence, the organism would have less response capacity and would be more predisposed to suffer diseases. For this reason, for a long time elderly patients were considered at high risk of complications with the placement of dental implants. Aim/Hypothesis : To determine the success and survival long term rate of osseointegrated dental implants with double acid etched surface in patients 65 years of age and older. Material and Methods : A clinical retrospective observational study of 817 dental implants with double acid- etched surface placed in 178 pa-tients aged 65 years and over with a follow- up of 15 years was performed. All the patients were controlled once a year both clinical and radio-graphically. Of the total implants, 530 (64.87%) were placed in women and 387 (35.13%) in men, 75% in patients between 65 and 74 years of age and 25% of 75 years or more+ 7.71% were smokers and 47.98% reported bruxism+ 54.1% of the implants were placed in the upper jaw and 29.9% in the upper posterior sector, 98% were external connection, 57, 9% conical shape, 27.78% of 13 mm in length and 71.60% of width of 4 mm, the most common type of surgery was 2 stages (58.8%) and 75% of implants they were placed in native bone. The most common type of load was deferred (56.62) + 82.78% was fixed screw- retained prosthesis and 26.4% of the placed implants required regeneration procedures. Results : The cumulative success rate was 98.80% pre- load and 95.59% post- load. The survival of the implants at 15 years was lower in the fe-male gender ( P = 0.018), upper jaw ( P = 0.026), upper posterior sector ( P = 0.008), soft bone (Trisi- Rao) ( P ≤ 0 . 0 01), t y p e I V b o n e (L e k h o lm- Zarb) ( P = <0.001), 2- stage surgery ( P = 0.040) and short implants ( P = <0.001). When applying the Cox regression model, bone type ( P = <0.001), maxilla ( P = 0.042) and length ( P = <0.001) proved to be independent risk variables for implant failure. Conclusions and Clinical Implications : Within the limitations of this study, it was observed that the placement of double acid- etched surface implants in patients older than 64 years is a predictable technique over time since the percentage of accumulated success obtained at 15 years was 95%. Therefore, it would be a highly recommendable treatment with optimal long- term results in elderly patients. | |
