Could braces fix protruding teeth without extraction of premolars/molars?

Extraction or not: It depends. If the bone of the upper arch of teeth are too far forward then extraction might be necessary. In most cases extraction is not needed. If the upper lip looks correct then removing upper teeth is contraindicated. If the front teeth are visible before you walk around the corner then it might be indicated. The orthodontist should be using the cephlometric xray analysis to decide.

Protruding teeth: This would be determined by the orthodontist. It would depend on your bite, on the position of all of the other teeth, the amount and condition of the bone, and whether there is enough room to move the teeth into alignment. Your orthodontist will use models and x-rays to do a space analysis.

Functional braces: Extractions of permanent teeth make orthodontic treatments easier for the orthodontist. However, evidence suggests that this procedure could lead to some serious problems down the road. Functional braces is a better way to align teeth and prevent future health complications. Re.C: see your orthodontist for evaluation and functional braces treatment.

70%: 70% of all malocclusions are resolvable without extractions, which means that there are well founded reasons to order extractions for some patients. For non-growing adults functional jaw orthopedics is totally ineffective. See a fully qualified orthodontic specialist for an examination (usually free or low cost) and a discussion as to the best way to resolve your malocclusion.