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Questions and Answers
What is the shape of the pulp chamber's cervical outline form in the maxillary first molar?
What is the shape of the pulp chamber's cervical outline form in the maxillary first molar?
- Circular
- Triangular
- Rhomboid (correct)
- Rectangular
Which one of the following angles in the maxillary first molar is an acute angle?
Which one of the following angles in the maxillary first molar is an acute angle?
- Mesiobuccal angle (correct)
- Distobuccal angle
- Palatal angles
- None of the above
Where is the mesiopalatal canal orifice located in the maxillary first molar?
Where is the mesiopalatal canal orifice located in the maxillary first molar?
- Buccal and mesial to the mesiobuccal orifice
- Palatal and mesial to the mesiobuccal orifice (correct)
- Buccal and distal to the mesiobuccal orifice
- Palatal and distal to the mesiobuccal orifice
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Study Notes
- Maxillary first molar is the largest tooth in volume and has complex root and canal anatomy.
- Four pulp horns are present in the pulp chamber.
- The pulp chamber's cervical outline form has a rhomboid shape.
- The mesiobuccal angle is an acute angle, the distobuccal angle is an obtuse angle, and the palatal angles are right angles.
- The orifices of the palatal, distobuccal, and mesiobuccal canals form a triangle known as the molar triangle.
- The palatal root curves buccally at the apical one-third.
- The mesiopalatal canal orifice is located palatal and mesial to the mesiobuccal orifice.
- The orifice of the mesiobuccal canal can be round, oval, or flat.
- Videos and scans are available online for rotational views of the teeth.
- The maxillary first molar is one of the most complex teeth in terms of anatomy.
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