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Bio Dental midterm 2
| Question | Answer |
|---|---|
| True or Flase The deciduous mandibular central incisors typically erupt with mamelons present. | False, PERMANENT central incisors erupt with mamelons |
| True or False The permanent mandibular lateral incisors have the most amount of anomalies of any other tooth in both dentitions | False permanent maxillary third molars have the highest amount of anomalies. fallowed by permanent maxillary lateral incisors |
| the permanent maxillary arch that have a true furcation | Permanent maxillary right 2nd molar Permanent maxillary right 1st molar Permanent maxillary right 1st premolar Permanent maxillary left 1st premolar Permanent maxillary left 1st molar Permanent maxillary left 2nd molar |
| A parent brings her 4 year old child in for an emergency exam. His deciduous maxillary 1st molars are badly decayed. Mom wants to have them extracted because they are "just baby teeth." What reasons do we have in dentistry to maintain baby teeth? | The Adult teeth wont have a path way leading them to where they need to be. |
| The_______________ surface on anterior teeth is the suface toward the tongue | Lingual |
| The outside anterior surface towards the lip | facial |
| Portion of the tooth covered with enamel? | anatomical crown |
| What permanent teeth erupt in the mouth around the age of 6? | maxillary 1st molar and mandibular central incisors |
| A parent comes to the office inquiring why her daughter’s “new teeth” that are coming in look yellow compared to her “old baby teeth”. What would your response be? | Adult teeth contains more dentin which tends to be far darker then enamel. Baby teeth have far more enamel then dentin thats why they are whiter. |
| Which of the following tooth structure makes up the major portion of the crown and root of the tooth? | dentin |
| Which of the following is the smallest tooth in the permanent dentition? | permanent mandibular central incisors |
| True or False? The apex of a tooth is located at the end of the root. The apical foramen is an opening in the end of the root of the tooth through which nerve and blood vessels enter. | Both Statements are true. |
| The surface of posterior teeth used for chewing food. | occlusal |
| True or False The deciduous maxillary left canine does not have a cingulum present on the lingual surface. | False the Maxillary Left Canine DOES have a cingulum present |
| The cusp of carabelli is located on the permanent mandibular 1st molars | False it is located on the MAXILLARY 1st molars only! (5 cusps) |
| The______________surface of anterior teeth is the surface toward the midline | Mesial |
| What are the two parts of the tooth? | Crown and the root. |
| What does it mean when something is Anatomical? | The portion of the tooth covered with enamel |
| Clinical part to the tooth | portion of the crown that is visible in the mouth. 9 above the gum line) |
| Cervical line | where the anatomical crown and root join together |
| CEJ | Cemental, Enamel, Junction |
| Anatomical root | Portion of the root covered with cementum |
| Clinical root | Portion of the root seen in the oral cavity |
| You should not be able to see the root but if the gums recede you can then ______ see the roots | Clinically |
| Enamel | Hard tissue that covers the crown of the tooth |
| Dentin | Makes up most of the crown and root of the tooth. |
| Cementum | tissue that covers the root of the tooth |
| Gingiva | Mucosa that covers the alveolar bone and surrounds the teeth (gums) |
| Labial/ facial (anterior teeth) | outside surface toward the lip |
| Buccal (posterior teeth) | faces the cheek |
| Occlusal | chewing surface |
| Apex | at or near the end of a root |
| Apical Foramen | opening at the end of a root that nerves and blood vessels enter |
| Bifurcated | 2 roots ( has Apical Foramen) |
| Buccal Groove | Linear depression that forms a groove from the buccal to the occlusal surfaces |
| Cingulum | Convex area on the lingual surface on anterior teeth. |
| Cusp (posterior teeth only!) | A pointed/ rounded elevation on the crown of a tooth |
| Cusp of Carabelli | a 5th cusp on the MAXILLARY 1st molar |
| Developmental groove | A groove that was formed when the tooth was developing |
| Fissure | a faulty groove (little cracks) |
| Fossa | a shallow depression |
| Furcation | dividing point of a multi rooted tooth |
| Lobes | Separate divisions that cam together to form a tooth (often become the cusps on a molar) |
| Mamelons | rounded prominence on the incisor edge ( had these when you were little) |
| whats the difference between Marginal ridges and oblique ridges? | Marginal obtain to mesial and dital surfaces, oblique ridges cut right through the middle of the tooth |
| Pit | pin point the grooves meet |
| ridge | linear elevation |
| supplemental groove | extra grooves (nameless) |
| Trifurcated | 3 roots |
| Transverse ridge | crosses the occlusal surface |
| triangle ridge | forms a triangle |
| ridge run, oblique transverse triangle | -diagonal - lingual to buccal - on premolars |
| what is the format used to name teeth? | permanent or deciduous, what arch, right or left, and tooth name |
| what is the only tooth that won't use 5 words when naming it is _____? | Canine, "permanent, maxillary, right, canine" |
| imbrication lines | curved lines near the gingiva (parallel to the CEJ) |
| what is the smallest tooth in the PERMANENT MAXILLARY arch? | Lateral incisor ( 2nd most common to have anomalies) |
| what is the most common anomaly called on permanent maxillary lateral incisors? | peg lateral, shaped like a peg, lacks contact with adjacent teeth. |
| what tooth has the longest root in the maxillary Arch? ( this tooth also appears darker in color, why? | canine ( corner stone) because of the amount of dentin |
| what tooth has a bifurcated root? | the permanent maxillary 1st pre molar (common to be removed for orthodontic reasons) |
| what teeth have a trifurcated root? | Permanent maxillary 1st and 2nd molars (hangs upside down so it needs it) |
| what tooth has the most anomalies? how are its roots? | your 3rd molar the wisdom tooth! fused together and vary in # |
| Why do baby teeth have flared roots? | to make room for the adult teeth to aline correctly and pus them out. |
Created by:
ashblake4
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