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Dental Histology
Chapter 18 Primary Dentition
When does mineralization of primary teeth begin? | 13-16 weeks during utero. |
When do primary teeth start to calcify? | 18-20 weeks |
What is the first primary tooth to erupt? | mand. central incisors |
When does the first primary tooth erupt? | 6-10 months |
How long does it take the primary dentition to complete? | 2-3 years |
What are inter proximal spaces? | spaces between the primary teeth necessary for proper alignment of future permanent dentition. |
Where are the most common spaces? | Between primary max. lateral and canine. Between primary mand. canine and first molar. |
Can teeth erupt into the oral cavity decayed? | Yes. |
How does the permanent tooth erupt? | Lingually to the primary tooth. |
Why are primary teeth whiter than permanent teeth? | The primary teeth have increased opacity of the enamel- covers the yellow color of the dentin. |
What is the crown to root ratio of primary teeth? | Roots are narrower and longer than the crown on primary teeth. |
Primary Incisor vs Permanent Incisors. | Primary resemble permanent successors, but primary has a more prominent cervical ridge on both labial and lingual surface. Same arch position. |
Primary Canines vs. Permanet Canines | Resemble the outline of their permanent successors, primary has a more prominent cervical ridge. |
Primary Molars vs Permanent Molars | Have similar arch position, function, and general shape has permanent. Primary has a prominent cervical ridge on buccal surfaces. |
Clinical Considerations for primary dentition. | Being supervised homewares as early as possible |
When should a childs first dental appointment be? | Within 6 months of the eruption of the first primary tooth, but no later than 12 months of age. |
Early Childhood Caries | Baby bottle tooth decay- acute caries |