Which characteristic is associated with a higher risk of submandibular sialolith formation?

The characteristic associated with a higher risk of submandibular sialolith formation is long duct length with sharp angles. The submandibular gland has a longer duct system compared to other salivary glands, which can facilitate the stagnation of saliva. When this duct is further complicated by sharp angles, it can create areas where saliva flow is disrupted. This disruption may lead to the precipitation of minerals from saliva, causing the formation of stones or sialoliths.

The longer and more tortuous nature of the duct system increases the likelihood of stagnation, particularly in the presence of factors that promote mineral accumulation. Thus, it's essential to understand that both the length of the duct and its anatomical configuration significantly contribute to the risk of sialolithiasis, making this characteristic critical in assessing risk factors for submandibular sialolith formations.