Teeth that tend to remain in the jaw for the longest duration are__________________?
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Answer: E. B & D
Explanation
Canines (both maxillary and mandibular) possess long robust roots that make them the longest-retaining teeth. Periodontal support for canines is exceptionally strong, allowing them to remain in the jaw longest. Anatomical stability and heavy root structure explain why canines outlast most other teeth in humans. Canines are single-rooted anterior teeth designed for tearing food and guiding lateral jaw movements. The canine eminence provides thick cortical bone support over the long root structure. Periodontal ligament attachment area is greatest around canine roots compared to other anterior teeth.
Canines are often the last teeth to be lost in aging mouths due to their superior periodontal support. Prosthodontists rely on remaining canines as vital abutments for removable and fixed dental prostheses. Loss of canines severely impacts canine-guided occlusion and overall functional stability of the mouth. Maxillary incisors feature shorter roots and are more vulnerable to trauma and periodontal bone loss. Mandibular incisors have narrow roots and are often the first teeth lost to periodontal disease. Selecting only one canine option ignores the equal longevity exhibited by the other canine arch.
Related questions
Q1. Primary teeth generally make their initial appearance in the oral cavity in the order of____________?
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Answer: C. Central incisors, lateral incisors, first molars canines, second molars
Primary teeth generally erupt in the sequence of central incisors, lateral incisors, first molars, canines, and second molars. This predictable chronological eruption order ensures proper spatial alignment within the dev...
Q2. Primary teeth undergo the exfoliation process during the timeframe between_____________?
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Answer: D. Seventh and Twelfth years
Primary teeth undergo exfoliation during the mixed dentition period between the seventh and twelfth years. Root resorption of primary teeth spans this multi-year window as permanent successors approach emergence. Clinica...
Q3. Following eruption, the duration required for root completion in a primary tooth is_____________?
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Answer: B. 1 years
Following clinical eruption, root completion of a primary tooth takes one year. This postnatal period allows the root apex to close and stabilize fully. Proper periodontal attachment develops concurrently with this root...
Q4. Initiation of the third molar tooth bud occurs at approximately the age of______________?
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Answer: D. 8th year of life
Initiation of the third molar tooth bud occurs significantly later, at approximately eight years of age. Unlike earlier developing teeth, third molars begin their odontogenesis much later in childhood development. This d...
Q5. Which tooth demonstrates the most variable occlusal anatomy________________?
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Answer: A. Maxillary third molar
The maxillary third molar demonstrates the most variable occlusal anatomy among all human teeth. Genetic variation frequently results in unpredictable cusp numbers and irregular supplemental groove patterns. Maxillary th...
Q6. The two primary fossae belonging to the permanent maxillary first molar are________________?
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Answer: B. Central and distal fossa
The permanent maxillary first molar features two primary fossae on its crown. These are specifically identified as the central fossa and the distal fossa. They accommodate major cusp tips of opposing mandibular teeth dur...