Abstract
Improvements in the customized base design and the bonding system have allowed development of a precise direct bonding system, named KommonBase. KommonBase is characterized by a large bonding base, which can acquire the best fitting and a precise bracket positioning while also enhancing bond strength. There is no need to use transfer trays because of its self-positioning shape.
Morphological complexity of lingual surface is a great advantage for applying KommonBase. There are many landmarks on lingual surface of the teeth; cingulum, marginal ridge, lingual groove, etc. KommonBase can achieve seating of bracket position according to the landmarks.
Brackets can be positioned easily and accurately by pressing the brackets with explorer. If the bracket is laid on incorrect position, KommonBase can direct it to a correct position. Most part of KommonBase spread over the lingual surface of the teeth consists of KommonBase resin LV. This extended resin was very thin like a film. Even in the case of occlusal interference, interfered resin can be grinded automatically according to the function of occlusion.
KommonBase should be bonded firmly throughout orthodontic treatment, and it also should be removed easily at the end of treatment. Hybrid ionomer is superior alternative for the bonding of lingual orthodontic brackets. The bond strength of hybrid ionomer is not affected by contamination of saliva and water.
