Dear mb.x,Thank you for your pictures and questions. I agree with you that from the pictures that you have shared, the dorsum does looks "thin" and this may be from the treatment. However, I cannot comment definitively as I do not have the before pictures for comparison. If this concerns you, I suggest that you check back with your doctor who did the procedure. Depending on the technique and depth of placement of the threads, the threads can be quite obvious and visible if it is placed too superficially. The dissolution profile of the threads will depend on the type of materials used. On average, most of the threads last up to a year and they gradually dissolve over time. If you are bothered about the "thiness" or visibility of the threads, you can also use fillers to camouflage the visibility. Fillers typically last 6-9 months. Speak to you doctor and ask for a simulation of how you would look after the treatment. 3D computer simulation software can give you an ideal of how the after results will look like - these are quite commonly available in many practices nowadays.I hope this answers your question. Have a great week ahead and all the best!Dr. Terence Goh Plastic Surgeon, SingaporeMBBS (S'pore), MRCS (Edinburgh), MMed (S’pore)Fellow, Academy of Medicine, Singapore (Plastic Surgery)President, Singapore Association of Plastic Surgeons (SAPS)International Member, American Society of Plastic Surgeons (ASPS)