A 2-year prospective study on immediate loading with XXXX -modified implants in the edentulous mandible.

@entity1 @entity604 @entity1388 @entity158
OBJECTIVES: Chemically modified surfaces were introduced during the last decade to improve indications for implant treatment. The @entity1388 -modified implant (Osseospeed(  )) was launched in 2004 and clinical studies suggest a more rapid bone formation and stronger bone to implant contact. However, limited clinical data are available on marginal @entity604 and the outcome after >1 year under immediate loading conditions is not fully understood. Hence, the purpose of this prospective study was to present implant survival and marginal bone level data when @entity1388 -modified implants are supporting a fully functional rehabilitation from the day after surgery in the completely edentulous mandible. MATERIALS AND METHODS: Twenty-five @entity1 , completely edentulous in the mandible, were consecutively treated with five @entity1388 -modified implants that were functionally loaded with a provisional screw retained restoration. Marginal @entity604 was measured from day of surgery to 3, 6, 12 and 24 months. Implants were considered successful after 24 months if radiographic @entity604 did not exceed 1 mm and no @entity158 or mobility was caused under a torque of 20 N cm. Statistical analysis was carried out on both @entity1 and implant levels. RESULTS: All implants survived and mean @entity604 on implant level after 3, 6, 12 and 24 months was 0.14, 0.13, 0.11 and 0.11 mm, respectively. @entity604 was only statistically significant between baseline and 3 months (P<0.001) and remained unchanged afterward. None of the implants lost >1 mm of bone after 2 years. On the @entity1 level, the mean @entity604 after 2 years was 0.12 mm (SD 0.14; range -0.06 to 0.55) with probing pocket depth 2.45 mm (SD 0.43; range 1.3-3.1) and bleeding index 0.55% (SD 0.34; range 0-1). CONCLUSION: Immediate loading of @entity1388 -modified implants is a predictable treatment yielding a high survival and success rate after 2 years.
