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Questions and Answers
What is the most frequent root canal type in maxillary first premolar with one root?
How many roots are present in 38% of maxillary first premolars?
What is the shape of the access cavity preparation & outline form on the occlusal surface of maxillary first premolar?
Which pulp horn is more prominent in maxillary first premolar?
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What is the cross-sectional shape of the cervical third of the root in maxillary first premolar?
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What is the cross-sectional shape of the apical third of the root in maxillary first premolar?
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What is the mesiodistal dimension in the buccolingual view of maxillary first premolar?
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What percentage of maxillary first premolars have three roots?
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What is the number of pulp horns in maxillary first premolar?
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What is the root canal type in each root of maxillary first premolar with two roots?
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What is the shape of the middle third of the root in maxillary first premolar?
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What is the buccolingual dimension in the mesiodistal view of maxillary first premolar?
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What is the prevalence of MB2 canal in maxillary first molars?
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How many roots do 90% of maxillary second molars have?
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What is the shape of the root cross-section at the apical third in premolars?
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What is the most common root configuration in mandibular premolars?
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How many pulp horns do mandibular premolars have?
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What are the dimensions of the access cavity preparation for premolars?
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What is the main type of canal in mandibular premolars with one root?
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What is the prevalence of premolars with one root?
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What is the root configuration in mandibular first molars?
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What is the prevalence of mandibular second molars with two roots?
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What is essential in access cavity preparation for molars?
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Why is differentiating between underextended and overextended access cavity preparation essential?
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Study Notes
Endodontic Access Cavity Preparation Summary
- Premolars have one or two roots, with 85% having one root and 15% having two roots.
- Premolars with two roots have type I canal in each root, while those with one root are mainly type I, with types II, III, and IV making up the remaining 25%.
- Mandibular premolars have two pulp horns, with a buccal and palatal horn.
- Access cavity preparation for premolars involves an oval shape on the occlusal surface with a narrow mesiodistal dimension.
- Root cross-section in premolars is oval at the cervical third, slightly ovoid in the middle third, and round at the apical third.
- Maxillary first molars have three roots and four canals, with a triangular or quadrilateral access cavity and specific orifice locations.
- The mesiodistal and bucco-lingual dimensions of maxillary first molars are detailed, with a 96% prevalence of the MB2 canal.
- Maxillary second molars have three roots in 90% of cases, with a similar access cavity and orifice locations as the first molars.
- Mandibular first molars usually have two roots, with a triangular access cavity and specific orifice locations for the canals in each root.
- Mandibular second molars have two roots in 76% of cases, with a similar access cavity and specific orifice locations.
- Access cavity preparation for molars involves practical steps and the identification of errors, with specific guidance for upper and lower molars.
- Differentiating between underextended and overextended access cavity preparation is essential, and the lecture aims to establish an understanding of pulp space morphology and access to root canals in posterior teeth.
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Description
Test your knowledge of endodontic access cavity preparation for premolars and molars with this summary quiz. Learn about the root and canal variations, access cavity shapes, and specific orifice locations for each tooth type. Assess your understanding of practical steps and error identification in access cavity preparation for posterior teeth.
