BACKGROUND: The guided bone regeneration (GBR) technique is highly successful for the treatment of @entity79 . The aim was to determine whether or not implants associated with GBR due to @entity737 show the same survival and success rates as implants placed in native bone without defects. MATERIAL AND METHODS: @entity1 with a minimum of two submerged dental implants: one suffering a dehiscence or fenestration defect during placement and undergoing simultaneous guided bone regeneration (test group), versus the other entirely surrounded by bone (control group) were treated and monitored annually for three years. Complications with the healing procedure, implant survival, implant success and peri-implant marginal @entity604 were assessed. Statistical analysis was performed with non-parametric tests setting an alpha value of 0.05. RESULTS: Seventy-two @entity1 and 326 implants were included (142 test, 184 control). One hundred and twenty-five dehiscences (average height 1.92  1.11) and 18 fenestrations (average height 3.34  2.16) were treated. At 3 years post-loading, implant survival rates were 95.7% (test) and 97.3% (control) and implant success rates were 93.6% and 96.2%, respectively. Mean marginal @entity604 was 0.54 (SD 0.26 mm) for the test group and 0.43 (SD 0.22 mm) for the control group. No statistically significant differences between both groups were found. CONCLUSIONS: Within the limits of this study, implants with @entity737 treated with guided bone regeneration exhibited similar survival and success rates and peri-implant marginal @entity604 to implants without those defects. Large-scale randomized controlled studies with longer follow-ups involving the assessment of esthetic parameters and hard and soft peri-implant tissue stability are needed. Key words:Guided bone regeneration, @entity737 , dental implants, marginal bone level, success rate, survival rate.

XXXX treated with guided bone regeneration.

@entity737 :: ('MESH:D057873', 'Disease') :: ['peri-implant defects'] @entity79 :: ('MESH:D001847', 'Disease') :: ['peri-implant bone defects'] @entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity604 :: ('MESH:D016301', 'Disease') :: ['bone loss']
@entity737 :: (MESH:D057873,Disease) :: ['Dental implants with versus without peri-implant bone defects']
