Xailaj thawj tseem ceeb yog overfilling, txhaj tshuaj ntawm qhov tob tob, thiab cov khoom tsis txaus cohesiveness. Cov tswv yim kom tsis txhob muaj qhov no suav nrog kev ua raws li 'tsawg dua' txoj hauv kev, siv ntau txheej txheej thiab cov txheej txheem blunt-cannula, thiab xaiv cov siab cohesiveness HA gels muaj peev xwm tiv taus cov di ncauj nquag.