Will partial dentures decrease the chances of bone loss in the jaw?

Unlikely. As long as you have missing teeth, the bone will "melt away" wherever there is tooth loss. Furthermore, partial dentures break your existing teeth as they are held in by metal clasps that hook around your teeth. It is just a matter of time before the teeth break. Consider dental implants.
No. People loose bone after they loose teeth. So partial denture will not prevent this deteriorating process, and even can accelerate bone loss as when you chew on it - your denture will apply an additional pressure to the i delaying bone and you may loose bone faster. Dental implants will preserve bone. Being biocompatible - dental implants will stop bone loss.
Yes. Partial dentures can cause bone loss in 3 ways: if they rest on the ridge, they cause it to resorb, especially if opposed by natural teeth. They also cause tooth loss by placing forces on teeth that they aren't designed for. Finally, they do so passively because you could choose dental implants which solve both of the above issues.
No. They will prevent some other problems and will help you chewing your food , but definitely the bone will keep deteriorating if teeth are absent.
Better to have em. What makes bone disappear in the jaws is lack of teeth. Keeping as amany as possible and helping the rest of your mouth may help e bone stay a lot longer. Sometimes we will even file teeth level with the bone (with or w/o root canal) and then give you an over denture just to try to keep yu bone level up. The partials will also make it easier to chew food than having an empty space.

Related Questions

Will partial dentures decrease the chances of bone loss in the jaw due to bone resorption?

Probably not! Individuals at greatest risk for osteonecrosis of the jaw with bisphosphonates are those with recent surgery, inlcuding root canal, and more commonly with patients who recived radiation therapy to the jaw area. I did a medline search and could find no association with partial plates or dentures (after tooth extraction is remote!). Another option is Evista (raloxifene) or estrogen. No association! Read more...
Yes. Compared to full dentures, but the risk persists where the partials are. Read more...
No. A conventional partial denture has not been shown to prevent bone resorption that occurs when a tooth is pulled. If you have an implant placed to help support your partial, that will prevent bone loss. Read more...
Unlikely. As long as you have missing teeth, the bone will "melt away" wherever there is tooth loss. Furthermore, partial dentures break your existing teeth as they are held in by metal clasps that hook around your teeth. It is just a matter of time before the teeth break. Consider dental implants. Read more...
No. Actually, they will accelerate it in areas where there are no teeth to support it. Implant treatment is the only thing that willl help against this bone resorption. Read more...

If a person wears partial dentures but keeps some of their natural teeth, does this mean bone loss and sagging of the jawbone won't be as pronounced?

Partials and bone. In a word, NO. Wearing of partial dentures, even when skillfully done, does little to prevent bone loss and bone sagging. In fact, when not skillfully done, or when the best treatment is OTHER than partials, bone loss may be aggravated or worsened. See a qualified oral surgeon to discuss other options like dental implants, rather than "clip on" partials. Read more...
Dentures & Bone. Bone will still be lost where the teeth were extracted. Without stimulus, the bone will atrophy. Having partials will help prevent the collapse of the vertical dimension which might be what you are asking. Nothing as good as your own teeth, the next best thing is implants. Read more...