Objective: This evaluation assessed the handling properties of a new dentine bonding system, which required the mixing of two different liquids to produce the distinctively coloured bonding liquid. (One Up Bond F, Tokuyama Dental Corp.) Method: Twelve dental practitioners from a UK-wide practice-based research group, the PREP (Product Research and Evaluation by Practitioners) Panel were chosen at random and sent a pack of the material along with a questionnaire designed to evaluate the presentation, handling and ease of use of the material. Most responses were given on a visual analogue scale (VAS). The evaluators were also asked the reasons for choice of dentine bonding systems, and to compare the system they previously used with the new material. Results: The new material was used to place 931restorations. Responses on the VAS indicated that the evaluators scored this material 4.6 for dispensing and placement convenience (where 1=inconvenient and 5-convenient). For overall ease of use the new material scored 4.5, compared with 4.3 for the material previously used by the evaluators (where 1= difficult to use and 5=easy to use). All the evaluators stated that the different colours of the liquids facilitated mixing and 75% (n=9) stated it was an advantage not to have to wash off etching liquid. 67% (n=8) stated they would also purchase the material when available. Conclusions: A new dentine bonding system was extensively assessed by 12 UK dental practitioners during the placement of 931 restorations. It received high ratings for ease of dispensing and placement, and a superior rating for ease of use when compared with the dentine bonding system previously used by the evaluators.

The support of Tokuyama Dental Corp. Tokyo, Japan is acknowledged

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