To investigate the feasibility of using UV curable calcium hydroxide as temporary crown binder.

242 patients with temporary crown were selected and randomly divided into three groups according the order of registration week each month, and respectively underwent temporary crown cement with Tempo Cem NE (n =78), Provicol (n = 80) and Calcimol LC (n = 84) for each tooth. The retention effect and the status of the gum and the pulp were observed at one week after operation.

There was no significant difference between the three groups in the retention effect and the status of the gum and the pulp (χ₁²= 5.553, P₁= 0.062＞0.05; χ₂²= 4.783, P₂= 0.091＞0.05; χ₃²= 3.290, P₃= 0.193＞0.05).

There was a good effect of temporary crown cement in three groups of Tempo Cem NE, Provicol and Calcimol LC. Calcimol LC can be used as a new type of temporary crown cement with good bonding performance and the protection to gums and pulp, and simple operation.