An applicator/dispenser assembly for dispensing and/or applying an adhesive material, comprising: a bladder having an open end, a frangible ampoule containing a polymerizable adhesive material disposed within the bladder, and a porous plug fitted in said open end of the bladder, characterized in that said applicator/dispenser assembly further comprises: a first body portion and a second body portion, joined by a pivoting connection that allows the first body portion and the second body portion to be moved from an open, spaced-apart relative position to a substantially closed, adjacent position, said first and second body portions defining a cavity therebetween; said bladder, frangible ampoule and porous plug being assembled and inserted into the cavity between said first and second body portions, with the porous plug extending through an opening in an end portion of the applicator/dispenser; said first body portion having an opening through which a push button portion of the bladder extends, wherein at least said push button portion of said bladder is made of flexible material; and a piercing or breaking member arranged on one of the first and second body portions and extending inwardly from an inner surface thereof near said open end of the bladder and remote from said push button portion of said bladder, whereby movement of said first and second body portions (110, 120) from said open position to said closed position moves the piercing or breaking member into the cavity to break said frangible ampoule, the first and second body portions (110, 120) acting as levers on the pivoting connection to provide a mechanical advantage to facilitate breakage of the frangible ampoule, and whereby following breakage of said frangible ampoule said polymerizable adhesive material can be dispensed from said applicator/dispenser by depressing said push button portion of said bladder. a first body portion and a second body portion, joined by a pivoting connection that allows the first body portion and the second body portion to be moved from an open, spaced-apart relative position to a substantially closed, adjacent position, said first and second body portions defining a cavity therebetween; said bladder, frangible ampoule and porous plug being assembled and inserted into the cavity between said first and second body portions, with the porous plug extending through an opening in an end portion of the applicator/dispenser; said first body portion having an opening through which a push button portion of the bladder extends, wherein at least said push button portion of said bladder is made of flexible material; and a piercing or breaking member arranged on one of the first and second body portions and extending inwardly from an inner surface thereof near said open end of the bladder and remote from said push button portion of said bladder, whereby movement of said first and second body portions (110, 120) from said open position to said closed position moves the piercing or breaking member into the cavity to break said frangible ampoule, the first and second body portions (110, 120) acting as levers on the pivoting connection to provide a mechanical advantage to facilitate breakage of the frangible ampoule, and whereby following breakage of said frangible ampoule said polymerizable adhesive material can be dispensed from said applicator/dispenser by depressing said push button portion of said bladder.