A prospective cohort study on survival and success of one‐piece mini‐implants with associated changes in oral function: Five‐year outcomes

Abstract

Objective:To investigate in a prospective cohort study the 5-year post-loading survival and success of one-piece mini dental implants (MDIs) in edentulous subjects with mandibular implant overdentures (IODs) and to report the associated changes of oral function with respect to patient age. Materials and methods:Independently living edentulous patients were recruited and provided with new complete dentures. After an adaptation period, four one-piece MDIs (diameter 1.8 mm) were installed in the interforaminal region and immediately loaded. At baseline pre-operative (BL), as well as at 1-year and 5-year follow-up examinations, chewing efficiency was assessed with a validated color-mixing ability test and maximum voluntary bite force (MBF) was recorded with a digital force gauge. Implant survival and success were evaluated at 5-year follow-up. Non-parametric tests served to analyze the differences between time points.Results: Twenty patients participated in the study (5 men and 15 women; age at BL: n = 10 ≤ 65 years and n = 10 > 65 years). All patients were available for a 5-year follow-up (n = 2 in their long-term care facility; n = 1 only by telephone). The survival and success rates were both 100% after 61 ± 5.7 months. Chewing efficiency did not change over the first year (p = 0.167), but was improved at 5 year fup (n = 19) compared to baseline (p = 0.033) and to 1 year (p < 0.001). The MBF (n = 19 at 5-year follow-up) increased continuously over time (p < 0.001), but was less pronounced in the older cohort (p = 0.009). Conclusions:Mini dental implants seem to be a successful treatment option for edentulous elderly patients with very high survival and success rates, and serve to improve long-term oral function. K E Y W O R D Sclinical assessment, clinical research, clinical trials, diagnosis, occlusion, prosthodontics, stomatognathic physiology | 571 ENKLING Et aL.

A cohort study on short mini‐implants for mandibular overdentures compared to those of standard length

“…All other failed MDIs were lost soon after loading (in the both groups). It may be attributed to possible errors inherent to flapless preparation, highlighted by Enkling et al (). They had 100% survival and success after the open‐flap insertion.…”

“…Good short‐ and intermediate‐term clinical results have been reported in the literature (Bornstein et al, ; Christensen & Swift, ; Elsyad, ; Elsyad, Gebreel, Fouad, & Elshoukouki, ; Enkling et al, ; Flanagan & Mascolo, ; Goiato et al, ; Hasan et al, ; Klein, Schiegnitz, & Al‐Nawas, ; Lemos et al, ; Šćepanović et al, ; Schiegnitz & Al‐Nawas, ; Shatkin & Petrotto, ; Shatkin, Shatkin, Oppenheimer, & Oppenheimer, ; de Souza et al, ; Zygogiannis, Aartman, Parsa, Tahmaseb, & Wismeijer, ).…”

Evolution of in vivo assessed retention forces in one‐piece mini dental implant‐retained mandibular overdentures: 5‐Year follow‐up of a prospective clinical trial

“…The participants bit unilaterally on the device, while a block of the same thickness on the contralateral side, stabilizing the dentures in both jaws was present. Details on this technique and the resulting maximum voluntary bite forces are given in another publication …”

“…Details on this technique and the resulting maximum voluntary bite forces are given in another publication. 34…”

Die Soforttherapien in der Implantologie: Sofortimplantation, Sofortversorgung und Sofortbelastung

“…Bei 2 Miniimplantaten (MDI) in der Mandibula wiesen primär verblockte Implantate eine bessere Überlebensrate und weniger marginalen Knochenverlust als sekundär verblockt auf [7,8]. Bei 4 interforaminalen MDI unter Sofortbelastung ergaben sich sehr gute Implantaterfolgsraten auch bei sekundärer Verblockung [9], wobei eine Implantatprimärstabilität von lediglich 20 Ncm auszureichen scheint [10]. Die Versorgung der zahnlosen Mandibula über eine 4 MDI-Kugel-Overdenture oder einen 2-Implantat-Steg auf Standardimplantaten ist nach aktueller Datenlage als ein sicheres Sofortbelastungskonzept zu bewerten.…”