Resonance frequency analysis as a predictor of early implant failure in the partially edentulous posterior maxilla following immediate nonfunctional loading or delayed loading with single unit restorations

Abstract

Baseline RFA measurements were not able to predict early failure of immediately loaded implants placed in the posterior maxilla and therefore should not be used to determine whether an implant is a candidate for immediate nonfunctional loading in this region of the mouth.

Clinical Investigation and Patient Satisfaction of Short Implants Versus Longer Implants with Osteotome Sinus Floor Elevation in Atrophic Posterior Maxillae: A Pilot Randomized Trial

“…He just finished the 6‐month recall visit and no complication was found. This might imply that RFA measurements alone were not enough to predict early failure and to determine loading time …”

A One-year Follow-up Study of a Tapered Hydrophilic Implant Design Using Various Placement Protocols in the Maxilla

“…However, due to that the ISQ transducers are different for different implant system, it is difficult to make direct comparisons. Moreover, factors such as placement depth also influence the ISQ values [29, 30]. It is the authors’ understanding that IT gives information about the tightness of the bone/implant contact, whereas RFA expresses rigidness of a more extended bone/implant complex.…”

Follow‐Up of the Sinus Membrane Elevation Technique for Maxillary Sinus Implants without the Use of Graft Material

“…Our RFA measurements indicated a stable situation for the majority of accessible implants with a mean value of ISQ 77 (range 56–85). Kim and colleagues evaluated the possibility to use baseline ISQ:s for posterior maxillary single implants as predictors for early implant losses but could not find any correlation . In early‐loaded full‐arch restorations with 284 Neoss implants placed in newly extracted 29 edentulous maxillas and 26 mandibles, all failures were encountered in the maxilla.…”

“…Kim and colleagues evaluated the possibility to use baseline ISQ:s for posterior maxillary single implants as predictors for early implant losses but could not find any correlation. 17 In early-loaded full-arch restorations with 284 Neoss implants placed in newly extracted 29 edentulous maxillas and 26 mandibles, all failures were encountered in the maxilla. Lower baseline ISQ values were seen in the implants that later failed compared with the successful ones, and these subjects also displayed lower ISQ average for all their implants with decreasing values at the second registration at 3 months.…”