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Chapter 4112Study resultsA total of 686 stock prosthesis were included in the 1-year follow-up results. This number significantly dropped to 122 for the 2-year follow-up, and then increased to 468 for the 3-year follow-up. In comparison, 252 PSIs were available at the 1-year mark, 85 at 2 years, and 124 at 3 years. Both stock and patient-fitted systems achieved significant increases in post-operative MMO, with a mean increase of 17.32 mm (95% confidence interval [CI], 6.39 to 28.25) for stock implants and 13.27 mm (95% CI, 8.47 to 18.08) for custom(ized) implants (Figure 2). However, the difference between the implant systems quickly decreased after 2 years. The difference between both groups was non-significant at both 1 (P = 0.51), 2 (P= 0.84) and 3 (P = 0.63) years. In total, 268 sides in patients treated with stock implants were evaluated for pain both pre- and post-operatively (Figure 3). At 2 and 3 years, 103 and 256 sides were evaluated, respectively. A significant decrease in the VAS pain score was noted, with a 5.02 (95% CI, -5.42 to -4.62) decrease on a 0 to 10 scale. While this decrease was higher for the 252 sides treated with a patient-fitted implant at the 1-year post-operative assessment at 5.34 (95% CI, -6.15 to -4.53), this difference was nonsignificant (P = 0.49). This lack of significance persisted at 2 (P = 0.81) and 3 years (P = 0.76). Only Lobo-Leandro et al.(20) provided information on patient dietary capabilities, with 300 included patients at the 1-year mark and 212 patients at the 3-year mark (Figure 4). A significant increase for both time points was seen for the dietary VAS score: 7.60 (95% CI, 7.45 to 7.75) and 7.62 (95% CI 7.47 to 7.77) at 2 and 3 years, respectively. Patients treated with a PSI showed a significant increase in their dietary VAS score (5.45 [95% CI, 4.95 to 5.96] and 4.82 [95% CI, 2.98 to 6.67])(13–15,17,22–25), albeit less significantly compared to the 1-year (P < 0.001) and 3-year results (P <0.01) results published by Lobo-Leandro et al.(20)Nikolas de Meurechy NW.indd 112 05-06-2024 10:14