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chapter 60
study guide
| Question | Answer |
|---|---|
| What instrument is used to disengage wire ties when removing an arch wire? | Ligature cutter |
| What is the most common type of attachment for fixed appliances? | Bonded bracket |
| True or False. Customized aligners can be used for all types of orthodontic treatments. | false |
| True or False. Cut ligature pigtail should be tucked towards the occlusal surface | true |
| Why should orthodontic patients avoid sticky candy and gum during orthodontic treatment? | they can get stuck in braces, causing damage to the appliances and increasing the risk of tooth decay. |
| True or False. When preparing to cement a molar band in place, you should put the band’s gingival surface down on masking tape. | true |
| Buccal arch wire tubes are located on the bands that surround which teeth? | molars |
| True or False. When taking photographs, the full direct view includes the intraoral view with all teeth in occlusion. | True |
| The function of the _____ is to apply force to either move the teeth or hold them in the desired positions. | Arch wire |
| What does a labial hook on the facial surfaces of the first and second molar bands and brackets do? | It holds elastics |
| What is the purpose of an orthodontic positioner | To retain the teeth in their desired position |
| _____ are attached to hooks or buttons that are secured on the band or brackets. | Elastics |
| What information is gathered by the dental team to determine the diagnosis and treatment plan of an orthodontic case? | Dental and medical history X-rays Pictures |
| Which instrument removes elastomeric ring separators? | Orthodontic scaler |
| Why is glass ionomer cement the most commonly used cement for banding orthodontic bands? | It contains fluoride that aids in preventing decay under the bands. It has adequate strength to aid in retention with enamel. |
| What is the purpose of a cervical traction headgear device? | to move the maxillary first molar distally |
| What tools can be used to help a patient clean under the arch wire while at home? | Interproximal brush Treader |
| What is the purpose of the headgear tube? | It stabilizes the ends of the facebow. |
| Which step is first in preparation for bonding the brackets to the teeth? | Polish using a fluoride-free paste. |
| Beyond the age of ____ years, thumb and finger sucking will affect the upper facial structure and upper anterior teeth. | 5 |
| In ______ malocclusion, the mesiobuccal cusp of the maxillary permanent first molar occludes in the interdental space between the distal cusp of the mandibular first permanent molar and the mesial cusp of the mandibular second permanent molar. | Class 3 |
| Which type of arch wire would not be used to position the crown and root of the teeth in final stages of treatment? | Round |
| What is the purpose of the arch wire? | Help Straighten teeth It is a pattern that gives the dental arch its shape |
| What is an advantage of using the patient’s model to select bands? | This processs eliminates the lengthily process at chairside |
| After preparing the tooth for bonding brackets, the sealant is placed on the ____ and the bonding material on the _____. | Tooth; bracket |
| Which instrument is used in the placement of elastomeric ligature ties? | hemostat |
| Severe malocclusion and dental facial deformities, both of which can cause social stigma and have a negative effect on a patient’s self-esteem, are examples of which type of adversity? | Psychosocial function |
| Elastic separators can be left in the mouth for ____ days, and steel can be left in the mouth for _____ days. | 14 days and 5 days |
| Which two things can be used to hold the archwire in place, securing the brackets to the archwire? | ligature ties and elastomeric ties |
| Orthodontic fixed appliances are also commonly known as what? | Braces |
| On which teeth are brackets most commonly bonded? | anterior and premolars |
| What is class I occlusion? | it is normal occlusion |
| A cross-bite refers to which condition? | A tooth is not properly aligning with its opposing tooth. |
| In Class _____ occlusion, or distoclusion, the mandibular arch and the body of the mandible are in bilateral, distal relationship to the maxillary teeth. | Class 2 |
| True or False. Congenitally missing teeth represent a developmental cause of orthodontic problems. | True |
| Before placement of orthodontic _______, separators may be necessary. | Bands |
| Wire ligatures should be twisted and cut, leaving a _____-mm pigtail. | 4-5mm |
| Which foods should be avoided by patients with fixed appliances | Chewy and sticky |
| Arch wires that are made of _____ are useful in early stages of treatment because they are flexible. | Nickel titanium |
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alejac0360