LAUSR

OBJECTIVES This study aimed to clarify the efficacy of a border-molding procedure with low-flow silicone impression material compared with a conventional compound to complete denture fabrication. It also aimed to evaluate the influence of various functional tasks during the lingual-side molding procedure regarding the depth and width of the border. METHODS Ten dentate subjects (three men, seven women; average age 30 years) were enrolled in this study after giving informed consent. A specially designed custom impression tray for the mandibular lingual side was fabricated for each subject. With the tray and heavy body-type silicone material, lingual border molding was performed that included four functional tasks: tongue protrusion (TP), licking the upper lip with the tongue (UL), swallowing (SW), and placing the tongue tip to the palate (PP). RESULTS Within the limitations of this study, the results suggested that heavy-body silicone impression material is satisfactory for use in the border molding procedure, giving reproducible results. CONCLUSION There were no significant differences among the functional tasks regarding the depth and width of the lingual flange except for swallowing, which exhibited the largest values.