c. Number of margins with prominent flexure ^{2, 8, 9, 19}

0.

indeterminate ³²

1.

one ^{2, 8, 9, 19}

2.

two ^{2, 8, 9, 19}

d. Position of base of inline (or transverse line if present) relative to lower termination of first flexure (first flexure is closest to apex) ^{2, 8, 9, 32}

0.

indeterminate or none of the following ³²

1.

base of inline (or transverse line) at same level as termination of first flexure or is below it ^{2, 8, 9}

2.

base of inline (or transverse line) is above termination of first flexure; ratio of height above base of inline to total height (a/b=>0.85) ^{2, 8, 9, 32}

3.

base of inline (or transverse line) is above termination of first flexure; ratio of height above base of inline to total height (a/b=<0.85) ^{2, 8, 9, 32}

e. Angle formed by flexure (or range for two flexures) ^{2, 8, 9}

Recorded in degrees ^{2, 8, 9}

f. Apical angle (disregarding convexity or concavity of flexed margin(s)); measured at level of flexure(s) ^{2, 8, 9}

Recorded in degrees ^{2, 8, 9}

g. Shape of first or prominent flexure ²¹

0.

indeterminate or none of the following ³²

1.

angle/angle ²¹

2.

angle/curve ²¹

h. Shape of transverse line ²¹

0.

indeterminate or none of the following ^{21, 32}

1.

straight line terminates at margins at about same level ²¹

2.

simply curved or straight line terminates at margins at different levels (perpendicular distance from apex of outline to level at which transverse line intersects margins differ by at least 5%) ²¹

3.

straight or simply curved line extends across sides of inline; one end runs through area between inline and outline, other terminates at flexed margin ²¹

4.

straight to gently curved transverse line above both flexures and terminates approximately at same level ²⁷

i. Height to width ratio of crown (measured from apex to level on transverse line closest to apex divided by width of crown at that same level on transverse line) ²⁷

Recorded as numbers ²⁷