A delivery system for dispensing a reactive or caustic dental material through a metal cannula comprising: the reactive or caustic dental material; a material capsule having a material bore with a constant diameter and an external material capsule surface, the material bore having an entrance end and a dispensing end; an external flange formed on said material capsule adjacent the entrance end; a bisected sidewall apex formed in said material capsule adjacent the dispensing end of the material bore; a radially decreasing material bore transition inner surface adjacent the dispensing end of the material bore and extending from said bisected sidewall apex, said radially decreasing material bore transition inner surface ending in a material delivery bore with an orifice; a radially increasing external material capsule transition surface adjacent the dispensing end of the material bore and extending from said bisected sidewall apex, said radially increasing external material capsule transition surface ending in an external material capsule opening surface with an opening, wherein a gap having an increasing radial dimension progressing from said bisected sidewall apex to the opening is formed between said radially decreasing material bore transition inner surface and said radially increasing external material capsule transition surface; internal threads formed within the gap on an internal material capsule opening surface adjacent the opening; and a delivery tip having a metal cannula attachable to said internal threads, characterized in that the caustic or reactive dental material reacts with the delivery tip cannula material and is contained separately in said material capsule and prevented from contacting or residing in proximity to the metal cannula prior to being dispensed, and the material bore is sealed with a removable cap. the reactive or caustic dental material; a material capsule having a material bore with a constant diameter and an external material capsule surface, the material bore having an entrance end and a dispensing end; an external flange formed on said material capsule adjacent the entrance end; a bisected sidewall apex formed in said material capsule adjacent the dispensing end of the material bore; a radially decreasing material bore transition inner surface adjacent the dispensing end of the material bore and extending from said bisected sidewall apex, said radially decreasing material bore transition inner surface ending in a material delivery bore with an orifice; a radially increasing external material capsule transition surface adjacent the dispensing end of the material bore and extending from said bisected sidewall apex, said radially increasing external material capsule transition surface ending in an external material capsule opening surface with an opening, wherein a gap having an increasing radial dimension progressing from said bisected sidewall apex to the opening is formed between said radially decreasing material bore transition inner surface and said radially increasing external material capsule transition surface; internal threads formed within the gap on an internal material capsule opening surface adjacent the opening; and a delivery tip having a metal cannula attachable to said internal threads, characterized in that the caustic or reactive dental material reacts with the delivery tip cannula material and is contained separately in said material capsule and prevented from contacting or residing in proximity to the metal cannula prior to being dispensed, and the material bore is sealed with a removable cap.