83 3.2 Clinical evaluation and resonance frequency analysis in Down Syndrome 3.3 Peri-abutment soft tissue outcomes Holgers grading system 0–4 [36] was measured at each review point, non-attenders to review were clinically assumed to have no adverse skin reaction. It is the experience of this BAHI team that parents seek reassurance and review if they have concerns regarding implant stability, skin reactions or hearing changes. Taking this into account, we therefore have considered their absence from review as reassuring. Adverse skin reactions were designated as Holgers grade 2–4. It is important to note that compliance rates to review appointments varied significantly between patients and appointment intervals 23.3–60.5%. Over the 12 months follow up period, adverse skin reactions were only recorded for 8 children (3.2%) and these occurred at a single point and resolved by the following review. 6 patients included in this group, had adverse peri abutment skin reactions (grade 2 or above) occurring in the first two weeks following abutment loading without further issues. Two late skin reactions grade 2 were recorded at 6 and 12 month review points respectively. No preponderance to any of the surgical techniques used, age, gender or BMI was identified. No revision surgery was required in this cohort, and no fixture failure was associated with any adverse skin reaction at any time point. 3.4 Implant Stability Quotient 34 implants used were 3 mm and nine implants were 4 mm: Overall 43 implants were placed in total. 3 implants (2 × 3 mm and 1 × 4 mm) were placed via a single stage and therefore fixture ISQ was not performed. In these 3 cases the combined fixture/abutment unit was inserted as a single unit and a decision was made not to separate them for fixture ISQ measurements. 17 implants had missing ISQ readings at the implant level at either first or second stage implants resulting in 47% missing data point. Of the 23 implants analysed the mean ISQ H decrease from 69.54 by 3.29 by stage 2 surgery, mean ISQ L demonstrates an increase of 1.73 from 62.9 at baseline by stage 2 surgery. Neither of these changes were found to be statistically significant p = 0.63 and 0.66 respectively. 3.5 Abutment ISQ All 31 implants had abutment level ISQ recorded at the time of loading. Five 6 mm, three 12 mm and thirty-five 9 mm abutments were placed. Due to lack of power from the small sample size of both the 6 and 12 mm cohorts, no significant statistical conclusions can be drawn from conducting sub group abutment size analysis. Therefore, here we present the ISQ results irrespective of abutment size placed.
RkJQdWJsaXNoZXIy MTk4NDMw