5‐year randomized multicenter clinical trial on single dental implants placed in the midline of the edentulous mandible

Abstract

Objectives This multicenter randomized controlled clinical trial was conducted to investigate whether the loading protocol of single dental implants placed in the midline of edentulous mandibles will influence the implant survival or prosthetic maintenance. Materials and Methods In total, 158 patients were randomly assigned either to the immediate loading group (n = 81) or to the delayed loading group (n = 77). All implants were loaded with an overdenture retained by a ball attachment. Results After 5 years, 102 patients attended the follow‐up investigation. Immediately loaded single implants in the midline of the edentulous mandible revealed a statistically significant lower survival rate than implants loaded conventionally over an observation period of 5 years. In the immediate loading group, 9 implants failed within the first three months of implant loading. No further implant loss was recorded for this group. Two implants failed in the delayed loading group, whereas one implant had to be removed during second‐stage surgery and the second five years after implant loading. Non‐inferiority of the survival rate of the midline implant of the immediate loading group, compared with the delayed loading group, could not be shown (p = .79, CI immediate loading: 74.9%; 100.0%, CI delayed loading: 73.0%; 100.0%). The observed difference in implant survival between the two treatment groups over time was statistically significant. Conclusions The results of the present study indicate that immediate loading of a single mandibular implant in the edentulous mandible should be considered only in exceptional cases.

Vascular and neurosensory evaluation in relation to lingual canal anatomy after mandibular midline implant installation in edentulous patients

“…Installing a single implant in the midline of an edentulous mandible to retain an overdenture was introduced to make the treatment more cost-effective and less invasive [2]. Promising medium-to long-term survival rates have been reported with this treatment option [2][3][4][5][6].…”

Influence of the loading protocol and platform switching in two‐implant bar‐retained overdentures: 3‐year results from a randomized controlled equivalence clinical trial

“…When mandibular ODs were retained by a single, immediately loaded implant, significantly lower implant survival rates relative to single implants with a delayed loading protocol were reported (Kern et al, 2021). However, implant survival rates in two‐implant retained, immediately loaded mandibular ODs are reported to be similar to those of early‐ or delayed‐loaded implants (Salman et al, 2019).…”

Implant Stability Changes for a Single Implant Mandibular Overdenture

“…15 The single-implant retained mandibular overdenture is considered to be a cost-effective treatment option which proved medium-to long-term survival rates. [16][17][18][19] The choice of the attachment system for the implantretained overdentures was considered to be of great importance as it has an impact on the overall patient satisfaction and the clinical success. 20 A newly introduced attachment made from polyetherketoneketone (PEKK) which is a member of the polyaryletherketones (PAEKs), is currently in use.…”