Long‐term follow‐up of single crowns supported by short, moderately rough implants—A prospective 10‐year cohort study

Abstract

Objectives To evaluate prospectively the clinical and radiographic outcomes after ten years of short (6 mm) implants with a moderately rough surface supporting single crowns in the posterior region. Material and Methods Forty 6 mm modified sandblasted large‐grit acid‐etched (mod‐SLA), soft tissue level implants were installed in the distal segments of 35 consecutive patients. After 6 weeks of healing, abutments were tightened, and single porcelain‐fused‐to‐metal crowns were cemented. Implant survival, marginal bone loss, and clinical crown/implant ratio were evaluated at various time intervals up to 10 years after loading. Results Two out of the 40 implants were lost before loading, one implant was lost after 7 years because of peri‐implantitis. One patient with two implants died and was excluded from analysis. Two patients did not come at the 10‐year follow‐up and were considered as drop out (2 implants). The survival rate was 91.7% (n = 36). Thirty‐three implants were available for marginal bone loss evaluation. A mean marginal bone loss after 10 years of function was 0.8 ± 0.7 mm. Between 5 and 10 years, the loss was 0.2 ± 0.4 mm. No technical complications were registered during the 10‐year period. The clinical crown/implant ratio increased with time from 1.6 at the delivery of the prosthesis to 2.0 after 10 years of loading with no increase between 5 and 10 years. Conclusion Short (6 mm) implants with a moderately rough surface supporting single crowns in the posterior region and loaded after 6–7 weeks maintained full function for at least 10 years with low marginal bone resorption.

Modifications of Dental Implant Surfaces at the Micro- and Nano-Level for Enhanced Osseointegration

“…The 10-year survival rate of SLA Ti implants was reported to be higher than 95%, even in periodontally compromised patients, although strict periodontal interventions were applied to these patients [20]. Similar results were found in 10-year prospective studies investigating the survival rates of dental implants with SLA surfaces [19,21,22]. This modified surface, roughened at the micro-scale, is one of the dental implant surfaces that has been most frequently tested in clinics for the longest period.…”

“…Regardless of whether an SLA surface is hydrophobic or hydrophilic, this dental implant surface has shown excellent long-term clinical results [18][19][20][21][22]. A previous 10-year retrospective study investigating more than 500 SLA Ti implants concluded that both the survival and success rates were 97% or higher [18].…”

Prevalence of peri‐implant diseases among an Italian population of patients with metabolic syndrome: A cross‐sectional study

“…The European population is getting older, with an increasing concern about oral health: according to Schimmel et al., implant‐prosthetic rehabilitation has become routine practice in elderly patients, with well‐documented long‐term survival rates (>10 years) . Nevertheless, coexisting systemic risk factors should carefully be taken into account by clinicians and implant success could be affected by either mechanical or biological complications .…”

Influence of crown‐to‐implant ratio and different prosthetic designs on the clinical conditions of short implants in posterior regions: A 4‐year retrospective clinical and radiographic study

“…5 Recent clinical studies have proven high survival rates of short implants that were comparable to the survival rates of standard implants. 6,7 Our previous study demonstrated that the 2-year performance of 6.5-mm short implants placed using osteotome sinus floor elevation procedures, exhibited similar clinical outcomes to long implants placed using lateral sinus floor elevation in severely atrophic posterior maxillae. 8 However, there is limited evidence for short implants from studies with larger sample sizes and longer follow-up.…”