풀어봅시다!!!  

2013년 3월 8일 QUIZ    

문제 1: The oral surgeons in Shanghai Jiaotong University have assessed the changes in disc position, disc length and condylar height in the patients with ADD of TMJ who had received no treatment. One year later,

(1) the disc displaced more (anteriorly, posteriorly)
(2) the disc (lengthened, shortened).
(3) the condylar height (increased, decreased).

문제 2: Texas Health ScienceCenter conducted a prospective RCT to determine the effectiveness of MI Paste Plus in prevention and reduction of white spot lesions. The orthodontic patients were asked to administer the paste, either MI Paste or placebo paste, by using a tray for 3 to 5 minutes after brushing at night. Three months later,

(1) MI Paste Plus group showed (reduction, no change, increase) in
    enamel decalcification scores.

(2) placebo paste group showed (reduction, no change, increase) in
    enamel decalcification scores.

(3) MI Paste Plus restores minerals to the teeth and helps to     stimulate saliva production. It contains casein phosphopeptide     which stabilizes the amorphous calcium phosphate in solution,     maintaining (high, low) concentration gradients of calcium and     phosphate in the white spot lesion, thus effecting high rates of     enamel remineralization.

2013년 3월 15일 QUIZ    

문제 1: Granada University evaluated periodontal status of mandibular 2nd molars after impacted 3rd molars are extracted in young adults. One year later,

(1) the probing sulcus depth showed (improvement, no change,     worsening).
(2) Plaque index (increased, decreased).
(2) Gingival index (increased, decreased).

문제 2: The University of Michigan evaluated the quality of treatment outcomes achieved with a finishing protocol involving serpentine wires and a tooth positioner.

(1) One week before debonding, molar bands and archwires were removed, and 0.008-inch ligature wires were placed in a (          ) configuration from second premolar to second premolar.

(2) The next week, all fixed appliances were removed, and a tooth positioner was delivered with instructions to wear it full time for (   ) hours. After that, the patients were instructed to wear the positioner as much as possible for (  ) days, and then 4 hours per day and at night for 2 to 3 weeks.

2013년 3월 22일 QUIZ    

문제 1: University of Bergenevaluated long-term clinical and radiographic outcomes of nonsurgically treated mandibular condylar fractures in children.

(1) In general, clinical outcome was (favorable, unfavorable).

(2) the remodeling of condylar process was (acceptable, not acceptable).

(3) (Bilateral, Unilateral) fractures increased the risk for unfavorable clinical outcome.

문제 2: Untreated palatallydisplaced canines may remain unerupted, requiring surgical exposure and more complex treatment.

Which one is advocated as treatment techniques?  (   )

① extraction of primary canine
② TPA
③ RME
④ all of the above

2013년 3월 29일 QUIZ    

1. Preparingthe patient for the surgery

- Overall length of the treatment time, information about surgery (   orthodontic, surgical and medical standpoint)
- Communication using pamphlet and consultation
- Proper and specific referral → initial surgical consultation
- Ultimate decision to proceed lies solely with the (          ).

2. Obtainingcomplete and accurate data
- Data need to be shared with the surgeon: initial consultation
- VTO: communicating with the patient about facial change, uncertainty   with regard to osteotomy, possible movement with decompensation.
3. Determining theskeletal discrepancy and commitment to a treatment    plan
- Skeletal discrepancy: course and predictability of the surgery
- (                   ) needs to commit to a diagnosis

4. Determining the transverse discrepancy

- Indication of S-RPE

① over (      ) mm transverse discrepancy,

② significantly crowded dentition with non-extraction treatment

③ a flattened (          ) with transverse discrepancy

④ no room for any alveolar expansion and orthodontic limitation to    obtain a good setup

⑤ questions about long term stability and if any of the orthodontic    movements pre-surgery maybe unstable, for example, an (          )

⑥ LeFort advancement of greater than a 5 mm is planned with    segmentalization to expand the maxilla

5. Plan with the surgeon to obtain a surgically based treatmentplan

- Surgical limitation: The amount of instability in surgery increases   with the degree of difficulty of the surgery.

- LeFort impactions are very (stable, unstable).

- Sagittal split advancements are (stable, unstable).

- LeFort downgrafts, there is greater and greater (                 ).

* The degreeof mandibular c-clockwise rotation is greater than   7~8 degrees → condylar resorption

* Downgrafting in maxilla: unstable, little aesthetic outcome
 

2013년 4월 5일 QUIZ  

문제 1: The Tokyo Medical Universityevaluated the dental arch size between obese and non-obese patients with obstructive sleep apnea (OSA).

(1) The tongue size and both upper and lower dental arch widths were significantly (larger, smaller) in obese than in non-obese OSA patients.

(2) There was (significant, no) difference in the severity of OSA between obese and non-obese patients.

2013년 4월 12일 QUIZ  

Thesuggestions in Dr. Levin’s article offer 4 ways to deal with negative publicity of the practice.

1. Try to (          ) negative publicity.

2. Be (          ) of what is being said about your practice by monitoring social media and rating websites.

3. Try not to react defensively.

4. Respond to negative publicity by using excellent (             ).

2013년 4월 19일 QUIZ  

6. Decompensation

- Presurgical concept: communication about orthodontic goal is needed.
- Uprighting the assisting dentition over the basal bone without expanding the alveolus.
- Leveling, aligning, and elimination of the curve of Spee except Class II (deep bite, open bite) case.

7. Removable of wisdom teeth

- Removing wisdom teeth during surgery is not recommended.

8. Ensuring optimal TMJ health

- Common rules find that correction of dentofacial discrepancy does actually improve overall TMJ health in about (      )% of patients

9. Ideal orthodontic mechanical support

- Obtaining proper mechanical attachment is important.
- Soldered hook, crimped closed hook, Kobayashihook, etc.

10. Assisting postoperative monitoring

- The surgeon needs to look at the lost fixation, (          ) of osteotomy, creation of instability, (            ), and anything that may cause the occlusion to shift.

2013년 4월 26일 QUIZ  

문제1:It is reported that eating disorders can potentially affect both general health and oral health. The researchers from Norway and Sweden found that patients with eating disorders may present with (       ).

①   Burning tongue

②   Cracked lips

③   Dental erosion

④ All of above

문제2:The Oslo University conducted a research regarding gingival recession in mandibular incisors after orthodontic treatment.

1) The prevalence of gingival recession after orthodontic treatment was    (low, high).

2) Gingival recession was predominantly found on (central incisors,    lateral incisors).

2013년 9월 13일 QUIZ

문제1: Energy drinks contain large amounts of caffeine, but they also contain herbal extracts such as ginseng and guarana.

(1) Ginseng and guarana have been reported to interfere with the     aggregation of (      ).
(2) So, they produce an impairment of (     ) clotting.
(3) For this reason, energy drink use before (     ) should be strongly     discouraged.

문제2: When utilizing an orthodontic appliance, it might be important tounderstand the expected subjective effects on the patient, in addition to the biomechanical effects on the teeth. The researchers from Turkey evaluated pain, anxiety, and stress during RME treatment.

(1) A (               ) was used to assess pain levels at 7 time     points.
(2) A standardized (            ) was used to assess anxiety levels. 
(3) (        ) samples were taken to assess cortisol levels.

2013년 9월 27일 QUIZ

문제1: Quad-helix appliance treatment is believed to cause the maxillary firstmolars to tip (       ) and (       ) and result in a delay in the eruption of the maxillary second molars.

문제2: Drs Ciarlantini andMelsen reported a biologic approach regarding miniscrew-retained pontics in growing patients. In order to allow vertical development of the alveolar process, the screw was placed in the (       ) side of the edentulous area, at the height of the approximate midpoint of the adjacent dental roots and (            ) to the alveolar process.

문제3: In spite of improvedaesthetics, Plastic brackets exhibit some problems, such as tie-wing (      ) and slot (        ) due to lack of strength and stiffness.

2013년 10월 4일 QUIZ

            Avoiding malpracticeclaims

Guest lecture by Elizabeth Franklin

1. Root resorption and periodontal disease

The problem about root resorption and periodontal disease during treatment could be prevented by using ① (                   ) before treatment.

 Root resorption

-     Review a good quality of ② (            ) x-ray.

-      Check; pre-existing root resorption, familial history of root resorption.

Periodontal disease

-      Be sure to be ③(                    ) before beginning treatment.

-      Evaluate periodontal condition and keep ④(           ) in the record.

-     Use informed consent.

-      Take progressive x-ray.

                  ← alveolar bone loss and mobility of tooth
                  ← pt’s complaint & broken appointment

Practice management activity

-      Orthodontic record is cornerstone of the treatment.

-      (              ) are optimum defense.

-      Never alter pt’s record → Draw a single line and write new information underline below.

-     Electronic record is easy to use, generally safe, and provide platform for creating excellent record.

-     Keep all orthodontic records.

2013년 10월 18일 QUIZ

문제1: Choose the answer in the box.

· (            ) is a term used to describe the developmental absence of one or more teeth, (            ) where six or more teeth are missing, and (             ) the developmental absence all teeth.

문제2: The researchers from Brazil conducted a meta-analysis to evaluate long-term change of surgically assisted rapid maxillary expansion. A significant relapse is expected in the (intercanine width, intermolar width) after expansion.

2013년 10월 25일 QUIZ

문제1: In recent study on the influence of pH levels on properties of nonlatex and latex elastics (Angle Orthod. 2012;82:709-14), differences in salivary pH have (no, significant) effect on nonlatex or latex elastic force degradation.

문제2: The researchers from India evaluated and compared the force levels of esthetic NiTi(coated) wires and regular NiTi (uncoated). Esthetic NiTi wires that are coated on all surfaces shows a (increase, decrease) in force levels relative to uncoated wires.

2013년 11월 8일 QUIZ

문제1: According to the article “Posterior cephalometric changes in subjects with temporomandibular joint disorders”, the position of the antegonial notch showed more ( horizontal/vertical ) asymmetry than ( horizontal/vertical ) asymmetry in unilateral TMD patients.

문제2: Long-term evaluation oftooth alignment changes and buccal segment relationship changes of treated patients shows: Mandibular incisors irregularity at long-term recall was < 3.5 mm in 77% of the patients examined. Maxillary incisor correction was stable. Overjet ( increased/decreased ) 0.9 mm and overbite ( deepened/ became shallow ) 0.7 mm after treatment. Buccal segment occlusal correction remained stable long-term.

문제3: According to the article “Radiographic evaluation of different techniques for ridge preservation after tooth extraction: randonmized controlled clinical trial”, the use of demineralized bovine bone, with either collagen matrix or soft tissue graft, result in ( the least/ the most/ the same ) vertical and horizontal change when compared with spontaneous healing or the use of biodegradable synthetic bone.

2013년 11월 15일 QUIZ

문제1: According to the article “Oral and written instruction of oral hygiene: A randomized trial", the best oral hygiene occurred in the group that received ( individualized oral/ oral standardized group ) instruction with individual follow up; the least effective was no instruction.

문제2: Overall, aligners with a scalloped design were significantly less retentive. Aligners with a straight gingival margin had improved retention, and aligners with a straight margin ( ) mm from the gingival zenith had the greatest retention.

문제3: According to the article “Two-phase treatment of skeletal Class II malocclusion with the combination of the twin-block appliance and high pull head gear”,

during the first and second phases of treatment the patient demonstrated excellent ( upward/ downward ) and ( backward/ forward ) growth of the mandible.

2013년 11월 22일 QUIZ

문제1: According to the article “Mucositis peri-implantitis implant sucess and survival of implants in patients with treated generalized aggressive periodontitis 3-to 16-year results of a prospective long-term cohort study”, peri-implant mucositis and peri-implantitis are ( less/ much more ) prevalent in patients with previously generalized aggressive periodontitis than in a control population of periodontally healthy individuals.

문제2: According to the article "Adult patients adjustibility to orthodontic appliances. Part I a comparison between labial lingual and invisalign", the lingual appliance and Invisalign groups consistently reported higher pain levels compared to the labial appliance group. ( Lingual appliance/ Labial appliance/ Invisalign system ) had the greatest levels of oral and general dysfunction and the longest recovery periods. Invisalign patients had the highest levels of pain on the first day, but pain levels dropped quickly. Labial appliances showed a lower average pain level, but many patients still did not fully recover by day 14.

2013년 12월 6일 QUIZ

문제1: Dr. Lee R. Boese emphasized 8 strategies for improvingpost-treatment stability in orthodontic patients.

Please fill out the blank.

1. Maintain original position of the lower incisors
2.  Maintain lower (arch form)
3.  Maintain lower intercanine width
4.  (Reproximation) for gaining space and avoiding expansion in lower    anterior teeth
5. Fiberotomy on (rotated) teeth
6.  Overcorrection
7.  Selective root torque
8.  Occlusal adjustment of prominent marginal ridge on lingual surface    of (upper incisors) when create prematurity in centric occlusion.

2013년 12월 13일 QUIZ

문제1: According to “MandibularSecond Molar Periodontal Healing After Impacted Third Molar Extraction in Young Adults (J Oral Maxillofac Surg 2012;70:2732-41), Faria, Galla-Torreira, and Lopez-Raton found that the periodontal health of mandibular 2nd molar (improved / worsed ) substantially after extraction of impacted mandibular 3rd molars.

문제2: Drs. B. Thilanderand K. Bjerklin reviewed recently the literature regarding the possible association between posterior crossbite and TMD. In their systemic review, articles that specifically diagnosed (       ) posterior crossbite with a (       ) all reprted an association with TMD.

한 주에 한 명의 대학원생이 그 주에 공부하게 되는 논문 내용 중 한가지를 선택하여 tape를 dictation해온 내용을 함께 모여 공부하는 시간입니다. 영어 청취력 향상과 함께 presentation 기법을 배울 수 있는 좋은 기회라고 생각합니다. Dictation된 글은 임회정 교수님께서 확인 수정합니다.