Resonance frequency analysis of osseo-integrated implants for bone conduction in a pediatric population – A novel approach for assessing stability for early loading

McLarnon, Claire; Johnson, I.; Davison, T. C.; Hill, John J.; Henderson, Beverly; Leese, Denise; Marley, Suzanne

doi:10.1016/j.ijporl.2014.01.023

Cited by 19 publications

(13 citation statements)

References 9 publications

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“…Total osseointegration failure rates were 21% in children as compared to 0% among adults which are not surprising when considering the softness of the skull bone in developing children. However, good stability and indications for early loading are given to be ISQ > 60 in children [ 30 ]. New information of implanted children with longer abutments demonstrates that a low ISQ value of 30 could indicate a value where an implant loss can be considered [ 24 ].…”

Section: Discussionmentioning

confidence: 99%

Stability Testing of a Wide Bone-Anchored Device after Surgery without Skin Thinning

Hultcrantz

2015

BioMed Research International

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Objective. To longitudinally follow the osseointegration using Resonance Frequency Analysis (RFA) for different lengths of abutment on a new wide bone-anchored implant, introduced with the non-skin thinning surgical technique. Study Design. A single-center, prospective 1 year study following adults with bone-anchored hearing implants. Materials and Methods. Implantation was performed and followed for a minimum of 1 year. All patients were operated on according to the tissue preserving technique. A 4.5 mm wide fixture (Oticon Medical) with varying abutments (9 to 12 mm) was used and RFA was tested 1 week, 7 weeks, 6 months, and 12 months later. Implant Stability Quotient (ISQ), was measured from 1 to 100. Stability was compared to a group of patients (N = 7) implanted with another brand (Cochlear BI400) of 4.5 mm fixtures. Results. All 10 adults concluded the study. None of the participants lost their implant during the test period indicating a good anchoring of abutments to the wide fixture tested. Stability testing was shown to vary depending on abutment length and time after surgery and with higher values for shorter abutments and increasing values over the first period of time. One patient changed the abutment from 12 to 9 mm and another from a 9 to a 12 during the year. No severe skin problems, numbness around the implant, or cosmetic problems arose. Conclusion. After 1 year of follow-up, combination of a wide fixture implant and the non-skin thinning surgical technique indicates a safe procedure with good stability and no abutment losses.

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Section: Discussionmentioning

confidence: 99%

Stability Testing of a Wide Bone-Anchored Device after Surgery without Skin Thinning

Hultcrantz

2015

BioMed Research International

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“…This revealed steady results for the first 10 months, with an overall increase in stability at 14 months after surgery, although the absolute values were still slightly below those reported in other studies or in children or adults with normal bone density. 18,19 There are some features in this case that encouraged us to opt for rehabilitation with a BAHA. Specifically, these included: the audiological thresholds of the patient within the fitting range of this device, the stability of these thresholds over the years, the patient's refusal of stapes surgery, poor adaptation to conventional hearing aids and the patient's strong desire to undergo BAHA implantation.…”

Section: Discussionmentioning

confidence: 98%

Successful bone-anchored hearing aid implantation in a patient with osteogenesis imperfecta

et al. 2015

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“…If the abutment length was longer than 6 mm, 3 ISQ values were added for each 1 mm. At the 4 th week after surgery, the same sound processors (BP 110® Sound Processor, Cochlear Ltd.; Lane Cove, Australia) were loaded in both groups [3] . The patients were examined for possible soft tissue problems around the implant.…”

Section: Methodsmentioning

confidence: 99%

Two Different Percutaneous Bone-Anchored Hearing Aid Abutment Systems: Comparative Clinical Study

Polat

İşeri²,

Orhan³

et al. 2016

Int Adv Otol

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OBJECTIVE:To compare two different percutaneous bone-anchored hearing aid (BAHA) abutment systems regarding operation time, scar healing, quality of life, implant stability, audiologic results, and complications. MATERIALS and METHODS:The study involves a prospective multi-center clinical evaluation. Thirty-two consecutive patients who had undergone BAHA surgery from January 2011 to January 2013 in two tertiary centers were included in the study. The Glasgow Inventory Benefit Score was used to assess the patients at least 6 months after surgery. The operation time and complications were recorded. Implant stability quotient (ISQ) values were recorded using resonance frequency analysis. Holger's classification was used to evaluate skin reactions. RESULTS:The mean length of the operation was 39.2±4 min for standard abutment and 18.3±5.7 min for hydroxyapatite-coated abutment. ISQ scores were significantly better for standard abutment in all tests. The mean total Glasgow Inventory Benefit Score was 39.3±19 for the standard abutment and 46.3±24.5 for the hydroxyapatite-coated abutment groups, but there was no statistical significance between the two groups. There was no difference in audiological improvement between the two groups after surgery. CONCLUSION:Hydroxyapatite-coated abutment provided a shorter operation time that was significantly different from standard abutment. There were no significant differences between standard abutment and hydroxyapatite-coated abutment regarding audiologic improvement, quality of life, loading time, and complications.

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Resonance frequency analysis of osseo-integrated implants for bone conduction in a pediatric population – A novel approach for assessing stability for early loading

Cited by 19 publications

References 9 publications

Stability Testing of a Wide Bone-Anchored Device after Surgery without Skin Thinning

Stability Testing of a Wide Bone-Anchored Device after Surgery without Skin Thinning

Successful bone-anchored hearing aid implantation in a patient with osteogenesis imperfecta

Two Different Percutaneous Bone-Anchored Hearing Aid Abutment Systems: Comparative Clinical Study

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