Pretend you are a teacher preparing a quiz for the text I will provide. 
            Each quiz question should follow the format below. 
            Ensure that you carefully recheck the questions and answers for accuracy. 
            The output should be a ready-to-use list of dictionaries for the Python eval function:

            [

                    "question": "WRITE THE QUESTION HERE",
                    "options": ["A) OPTION_1", "B) OPTION_2", "C) OPTION_3", "D) OPTION_4"],
                    "answer": INDEX_OF_CORRECT_ANSWER_IN_OPTIONS_LIST,
                    "explanation": "EXPLAIN WHY THE ANSWER IS CORRECT"

            ]

            Text:
             crown outline. 
Distal aspect: 
- The     crown     is     narrower     bucco-lingually than 
that of the mesial side "Distal Convergence" and is 
also shorter cervico-occlusally. So, areas of the 
- buccal and palatal surfaces can be seen  
- Distal marginal ridge is more cervically placed than 
mesial marginal ridge, so more of the occlusal 
surface can be seen 
The roots: 
 Apex of the palatal root is in line with the tip of the disto-palatal cusp. 
 M   
 
 B   
L 
L
D 
B 
12 
 
 The distobuccal root is narrower and shorter than the mesio-buccal root, so 
part of the mesiobuccal root can be seen behind the disto-buccal root. 
 Occlusal aspect: 
According to the presence or absence of the disto-palatal 
cusp, the occlusal surface of the upper second molar could 
be: 
 
a. Four cusp type (rhomboid); 
- More frequently seen than the other type. 
 
- It has a more rhomboid appearance than 6, the obtuse 
angles are more obtuse and the acute angles are more 
acute. 
- Lingual convergence: where the lingual side is narrower than the buccal 
side.  
- The opposite occurs in 6 (buccal convergence). 
- Distal convergence: where the distal side is narrower than the mesial side, 
more distal convergence is present in second molar than the first molar. 
- So, the occlusal surface of the second molar is characterized by disto- 
lingual convergence. 
- The two mesial cusps are of the same size as those of the first molar, but 
the distal cusps are smaller and less well developed. 
- The oblique ridge is less pronounced than on first molar. 
- More supplemental grooves and pits are found in second molar than on the 
first molar. 
- No tubercle of Carabelli is found on the mesio-palatal cusp. 
b. Three cusp type (Heart shape): 
-  It has a triangular or heart-shaped outline, due to absence of the disto-
palatal cusp. The base of the triangle is formed by the two buccal cusps, 
while, the apex of the triangle is made by one lingual cusp. 
- In this case, the distal fossa and both the distal oblique and lingual grooves 
are absent. The palatal cusp and the disto-buccal cusp are joined by oblique 
ridge. 
D 
M 
B
D 
13 
 
 
4 cusp type 
3 cusp type 
3 cusp type 
 
Pulp cavity Pulp Chamber: 
The   pulp   chamber   is   broader   bucco-lingually    than    mesio-distally. There 
is pulp horn beneath each   cusp   (mesial   ones   are   prominent). The floor of 
the pulp chamber is apical to the cervical line. 
 
Root Canals: 
- Three main root canals. 
- Mesio-buccal root may have two root canals 
 
 
14 
 
Maxillary Third Molar 
- It is the smallest upper molar and is known as upper wisdom tooth. 
- Its occlusal surface is wrinkled. 
- It is liable to variation in size, shape and relative position than any other 
tooth 
in the dental arch. 
- It has only one contact area mesially. 
 
 
 
 
 
 
 
BUCCAL ASPECT 
- The mesiobuccal (MB) cusp is wider and longer than the 
(DB) cusp (similar to 7 but smaller). 
- The crown is shorter and narrower than 7. 
- The root

            Quiz: