The present invention provides a dental composition exhibiting high adhesiveness to both a tooth and a dental restorative material such as porcelain. The present invention pertains to a one-liquid type dental composition containing: a compound (A) represented by general formula (1), Y-SiRnX(3-n) (in the formula, Y represents a monovalent organic group having a polymerizable group, R represents a group selected from the group consisting of an alkyl group, an aryl group, and an aralkyl group, X represents a hydroxyl group or a hydrolyzable group, and n represents an integer of 1 or 2. The plurality of R's may identical or different, and the plurality of X's may identical or different)； a monomer (B) having an acidic group； and 1.0-50 mass% of water (C).
