|
|
|
3.
|
irregular, uneven, or undulating (may have mesial protrusion) 9, 19, 31, 32
|
 |
|
|
|
4.
|
flared into an irregular structure 9, 19, 31, 32
|
 |
|
|
f. Outline of pedicle base subsurface 9, 19, 31
|
|
|
|
0.
|
indeterminate or none of the following 9, 19
|
|
|
|
|
1.
|
equilateral triangle 9, 19
|
 |
|
|
|
2.
|
isosceles triangle 9, 19
|
 |
|
|
|
3.
|
circular to subcircular, smooth margins 9, 19
|
 |
|
|
|
4.
|
square to diamond (rhomboid) shaped 9, 19
|
 |
|
|
|
5.
|
circular to subcircular, crenulated margins 9, 19
|
 |
|
|
|
6.
|
cruciform 9, 19
|
 |
|
|
|
7.
|
ovoid to elliptical 19, 32
|
 |
|
|
|
8.
|
tetrapetaloid 31, 32
|
 |
|
|
|
9.
|
multi-petaloid 31, 32
|
 |
|
|
g. Size of pedicle (at anterior and sides) 9, 19, 31
|
|
|
|
0.
|
indeterminate or none of the following 9, 19
|
|
|
|
|
1.
|
pedicle wider than crown 9, 19, 31, 32
|
 |
|
|
|
2.
|
pedicle same width as crown 9, 19, 31, 32
|
 |
|
|
|
3.
|
pedicle narrower than crown 9, 19, 31, 32
|
 |
|
|
h. Development of lateral peaks on posterior crown 9, 19, 31
|
|
|
|
0.
|
indeterminate 9, 19
|
|
|
|
|
1.
|
no development, smooth margins 9, 19
|
 |
|
|
|
2.
|
some development, irregular margins 9, 19
|
 |
|
|
i. Length/width ratio of crown 19, 31
|
|
|
|
0.
|
indeterminate 19
|
|
|
|
|
1.
|
length greater than width, but less than three times width 19, 32
|
 |
|
|
|
2.
|
length approximately equal to width 19, 32
|
 |
|
|
|
3.
|
length less than width 19, 32
|
 |
|
|
|
4.
|
length greater than three times width 19, 32
|
 |
|
|
j. Upper crown mesial platform (or differentiated structure) 31, 32
|
|
|
|
0.
|
indeterminate or none of the following 31, 32
|
|
|
|
|
1.
|
absent or considerably reduced 31, 32
|
 |
|
|
|
2.
|
one line, ridge, or keel 31, 32
|
 |
|
|
|
3.
|
narrow and elongate lanceolate (rounded anterior margin, pointed posterior margin), (greater than five times longer than wide 31, 32
|
 |
|
|
|
4.
|
elongate lanceolate (three to five times longer than wide) 31, 32
|
 |
|
|
|
5.
|
lanceolate (greater than one to less than three times longer than wide) 31, 32
|
 |
|
|
|
6.
|
broad lanceolate (equally as long as wide, or wider than long) 31, 32
|
 |
|
|
|
7.
|
narrow and elongate rhomboid (greater than five times longer than wide) 31, 32
|
 |
|
|
|
8.
|
elongate rhomboid (three to five times longer than wide) 31, 32
|
 |
|
|
|
9.
|
rhomboid (two to three times longer than wide) 31, 32
|
 |
|
|
|
10.
|
broad rhomboid (equally as long as wide, or wider than long) 31, 32
|
 |
|
|
|
11.
|
long, extends anterior to posterior (greater than 1/2 crown length) 31, 32
|
 |
|
|
|
12.
|
short, (less than or equal to 1/2 crown length) 31, 32
|
 |
|
|
|
13.
|
with internal lines, ridges, or keels (which are not closely paired) 31, 32
|
 |
|
|
|
14.
|
with closely paired lines, ridges, or keels 31, 32
|
 |
|
|
|
15.
|
with lines or ridges which bifurcate anteriorly 32
|
 |
|
|
k. Features on the subcrown 31
|
|
|
|
0.
|
indeterminate or none of the following 31
|
|
|
|
|
1.
|
absent (smooth) 31, 32
|
 |
|
|
|
2.
|
one median line, ridge, keel, or platform 9, 19, 32
|
 |
|
|
|
3.
|
two lines, ridges, keels, or platforms 31, 32
|
 |
|
|
|
4.
|
three or more short parallel to subparallel lines, ridges, or keels which commonly do not exceed
½
the crown length 31, 32
|
 |
|
|
|
5.
|
three or more long parallel to subparallel lines, ridges, or keels which commonly extend from posterior pedicle margin to posterior crown margin or apex 31, 32
|
 |
|
|
|
6.
|
curved line, ridge, or keel near the subcrown centre posterior region around pedicle 19, 31, 32
|
 |
|
|
|
7.
|
curved depression surrounding junction of crown and pedicle 19, 31, 32
|
 |
|
|
|
8.
|
stippled or pitted 32
|
 |
|
|
l. Anterior crown overhang of pedicle/crown junction 31, 32
|
|
|
|
0.
|
indeterminate 31, 32
|
|
|
|
|
1.
|
absent (crown drops obliquely or vertically to pedicle) 31,
32
|
 |
|
|
|
2.
|
minor (crown slightly curves under to pedicle) 31, 32
|
 |
|
|
|
3.
|
prominent (crown significantly curves under to pedicle) 31, 32
|
 |
|
|
m. Pedicle type 31
|
|
|
|
0.
|
indeterminate or none of the following 31
|
|
|
|
|
1.
|
tetrahedroid 31, 32
|
 |
|
|
|
2.
|
keeled tetrahedroid 31, 32
|
 |
|
|
|
3.
|
expanded tetrahedroid 31, 32
|
 |
|
|
|
4.
|
keeled expanded tetrahedroid 31, 32
|
 |
|
|
|
5.
|
tall trunk 31, 32
|
 |
|
|
|
6.
|
keeled tall trunk 31, 32
|
 |
|
|
|
7.
|
trunk-like 31, 32
|
 |
|
|
|
8.
|
keeled trunk 31, 32
|
 |
|
|
|
9.
|
short trunk 32
|
 |
|
|
|
10.
|
keeled short trunk 32
|
 |
|
|
n. Pedicle subsurface 31
|
|
|
|
0.
|
indeterminate or none of the following 31
|
|
|
|
|
1.
|
flat 31, 32
|
 |
|
|
|
2.
|
concave 31, 32
|
 |
|
|
|
3.
|
convex 31, 32
|
 |
|
|
|
4.
|
convex with bulge to one side 31, 32
|
 |
|
3. kite-shaped, with two longer sides 2, 8, 9, 19, 32
|
 |
|
|
d. Pattern of lines on upper crown surface 2, 8, 9
|
|
|
|
0.
|
indeterminate or none of the following 2, 8, 9
|
|
|
|
|
1.
|
absent 2, 8, 9
|
 |
|
|
|
2.
|
one line 2, 8, 9
|
 |
|
|
|
3.
|
three or more lines; parallel to subparallel 2, 8, 9
|
 |
|
|
|
4.
|
irregular network of lines or dendritic 2, 8, 9
|
 |
|
|
|
5.
|
lines converge at acute prominence 2, 7
|
 |
|
|
|
6.
|
median line bifurcates 2, 7, 8
|
 |
|
|
e. Length of acute prominence (apex or pointed margin) 2, 8, 9
|
|
|
|
0.
|
indeterminate 2, 8, 9
|
|
|
|
|
1.
|
length equal to or less than width of base 2, 8, 9, 30
|
 |
|
|
|
2.
|
length less than twice width of base 2, 8, 9
|
 |
|
|
|
3.
|
length more than twice but less than three times width of base 2, 8, 9
|
 |
|
|
|
4.
|
length more than three times width of base 2, 8, 9
|
 |
|
|
f. Narrow differentiated area at upper crown margin 2, 8, 9
|
|
|
|
0.
|
indeterminate 2, 8, 9
|
|
|
|
|
1.
|
absent 2, 8, 9
|
 |
|
|
|
2.
|
present on long sides 2, 8, 9
|
 |
|
|
|
3.
|
present on short sides 2, 8, 9
|
 |
|
|
g. Margin 2, 8, 9
|
|
|
|
0.
|
indeterminate or none of the following 2, 8, 9
|
|
|
|
|
1.
|
smooth and continuous on long sides (on sides of acute prominence) 2, 8, 9
|
 |
|
|
|
2.
|
smooth and continuous on short sides (on sides opposite acute prominence) 2, 8, 9
|
 |
|
|
|
3.
|
irregularly undulating on long sides (on sides of acute prominence) 2, 8, 9
|
 |
|
|
|
4.
|
irregularly undulating on short sides (on sides opposite acute prominence) 2, 8, 9
|
 |
|
|
|
5.
|
regularly undulating on long sides (on sides of acute prominence) 2, 8, 9
|
 |
|
|
|
6.
|
regularly undulating on short sides (on sides opposite acute prominence) 2, 8, 9
|
 |
|
|
|
7.
|
broken on long sides (on sides of acute prominence) 2, 8, 9
|
 |
|
|
|
8.
|
broken on short sides (on sides opposite acute prominence) 2, 8, 9
|
 |
|
|
h. Degree of curvature on sides of acute prominence 7, 8
|
|
|
|
0.
|
indeterminate or none of the following 8
|
|
|
|
|
1.
|
straight or slightly concave 7, 8
|
 |
|
|
|
2.
|
pronounced concave 7, 8
|
 |
|
|
|
3.
|
sigmoid 32
|
 |
|
|
|
4.
|
convex 32
|
 |
|
|
i. Length to width ratio 19, 32
|
 |
|
|
|
|
Recorded as numbers 32
|
|
|
|
j. Degree of curvature on sides opposite acute prominence 32
|
|
|
|
0.
|
indeterminate or none of the following 32
|
|
|
|
|
1.
|
straight 32
|
 |
|
|
|
2.
|
pronounced convex 32
|
 |
|
|
|
3.
|
pronounced concave 32
|
 |
|
|
|
4.
|
regularly undulating 32
|
 |
|
|
|
5.
|
irregularly undulating 32
|
 |
|
4. rhombic 2, 8, 9, 19
|
|
|
d. Pattern of lines, ridges, or keels on upper crown surface 2, 9, 19, 31
|
|
|
|
0.
|
indeterminate or none of the following 2, 9, 19
|
|
|
|
|
1.
|
absent 2, 9, 19
|
 |
|
|
|
2.
|
one line, ridge, or keel 2, 9, 19, 31
|
 |
|
|
|
3.
|
two or more parallel to subparallel lines, ridges, or keels not converging centrally or at a corner 2, 9, 19, 31
|
 |
|
|
|
4.
|
three or more parallel to subparallel lines converging at or near one or more corner 2, 9, 19
|
 |
|
|
|
5.
|
irregular network of lines, ridges, or keels 2, 9, 19, 31, 32
|
 |
|
|
|
6.
|
concentric chevrons, with centre at one corner of crown 9, 19, 31
|
 |
|
|
|
7.
|
concentric rhombs with centre at middle of crown 9, 19, 31
|
 |
|
|
|
8.
|
many parallel or subparallel lines arising predominantly from one or two edges of crown 19
|
 |
|
|
|
9.
|
concentric rhombs with centre at one corner of crown 19, 31
|
 |
|
|
e. Length/width ratio of crown 9, 19, 31
|
 |
|
|
|
0.
|
indeterminate 9, 19
|
|
|
|
|
1.
|
length greater than width 9, 19, 32
|
 |
|
|
|
2.
|
length approximately same as width 9, 19
|
 |
|
|
|
3.
|
length less than width 31, 32
|
 |
|
|
f. Other features present 9, 19
|
|
|
|
0.
|
indeterminate or none of the following 9, 19
|
|
|
|
|
1.
|
no other significant features 19
|
|
|
|
|
2.
|
one line, ridge, or keel on subcrown 9, 19, 30, 31
|
 |
|
|
|
3.
|
platform, pedicle, or base present (basal/subcrown and side views) 9, 19, 30, 31
|
 |
|
|
|
4.
|
more than one line, ridge, or keel on subcrown 19, 30, 31
|
 |
|
|
|
5.
|
extension of crown into a peg-like structure 9, 19, 31
|
 |
|
|
|
6.
|
subcrown smooth and unornamented 30, 31, 32
|
 |
|
|
|
7.
|
one or two crown edges serrated 30, 31, 32
|
 |
|
|
|
8.
|
upper crown surface with stippled region(s) 30, 31, 32
|
 |
|
|
|
9.
|
canal opening(s) or hooded foramina on upper crown surface 30, 31, 32
|
 |
|
|
g. Thickness of element (crown and base) 9, 19, 32
|
 |
|
|
|
0.
|
indeterminate 9, 19
|
|
|
|
|
1.
|
very flattened (thickness less than 1/4 maximum width) 9, 19, 31, 32
|
 |
|
|
|
2.
|
moderately flattened (thickness = 1/4 - 1/2 maximum width) 9, 19, 32
|
 |
|
|
|
3.
|
very thick (thickness greater than maximum width) 9, 19, 32
|
 |
|
5. cruciform 11
|
 |
