In situations with reduced bone height or narrowed ridge treatment with denture or implant alone will cause imperfection in the aspect of function and esthetics.

• 但针对双颚前突合并有已降低骨高度和狭窄化牙脊的前牙区域，单独假牙或人工植牙的赝复治疗，可能会导致门齿的过度外展，咬合功能或美观上不尽理想。