Abstract
Although mastication has long been studied in the field of dentistry, it was reported that only few dentists play a part of decision making in food preparation level for elderly people in nursing home. Needless to say, serving denture prosthesis to a patient might not result in the improvement of his/her food intake level. For this purpose, the masticatory efficiency would be needed to be evaluated using daily consumption natural food to provide a medical background to decide the food preparation level. This review highlights issues identified in the literature to date that influence the property of the evaluation methods for masticatory efficiency. Knowledge gaps and considerations that need to be taken into account when conducting research are discussed.