Toothbrush with needle-shaped bristles for improving tooth and gum contacting force and teeth-cleaning performance, and method for manufacturing same

A toothbrush comprising:

• a head portion;
• a plurality of long needle-shaped bristles affixed to said head portion;
• and
• a plurality of short needle-shaped bristles affixed to said head portion, the short needle-shaped bristles having a height that is different by between 1 to 4 millimeters than a height of the long needle-shaped bristles, said plurality of long needle-shaped bristles having differing end diameters ranging between 0.01 and 0.03 millimeters, said plurality of short needle-shaped bristles having differing end diameters between more than 0.03 and up to 0.08 millimeters, each of said plurality of long needle-shaped bristles having a taper extending to the end diameter, a length of said taper being between 4 and 8 millimeters, each of said plurality of short needle-shaped bristles having a taper extending to the end diameter thereof, said taper of the short needle-shaped bristles having a length of between 2 and 6 millimeters, the length of the taper of the long needle-shaped bristles between 1 and 4 millimeters different than a length of the taper of the short needle-shaped bristles.