DPOJW Examination

This is a teaching exam in which you will learn by and large all that is needed to know. Take the test and grade yourself . Be honest with yourself as to whether you passed or failed. There are 60 questions. The answers are provided. Send me a copy of your test with your signature. I’ll send you a certificate of OJW Course Completion. Forty-eight correct answers of out sixty (48/60) is passing.

Suggested reading:

The course presentation handout

The informed consent for OJW

Who is NOT a good candidate for the OJW procedure

Orthodontic Jaw Wirining (OJW) Intro letter
ADA recognizes Obesity

he OJW questionnaire survey  and results
Orthodontic Jaw Wiring: The Dental Professional’s Role in Weight Control for Compulsive Overeating Leading to Obesity



1.  OJW is an acronym for Orthodontic Jaw Wiring?  T   F

2.  At the present time OJW is covered by some insurance companies? T   F

3.  Obesity is a risk factor for many other serious health problems?  T   F

4.  The ADA at present seems to be in favor of dental professionals providing weight related services?  T  F

5.  By and large the public would welcome having dental professionals help them with weight problems? T  F

6.  Only licensed dental professionals may provide OJW?   T  F

7.  Regaining lost weight is common to all weight loss methods including gastric bypass surgery? T  F

8.  According to the US Dept. of Health and Human Services obesity BMI 30-39 occurs in

a. 15 million US citizens

b. 29 million

c. 39 million

d. 56 million persons

9. What is BMI an acronym for?
a. Body Mass Index
b. Basal Metabolism Index
c. Building Muscle “I” Units
d. Bicep Mass Indices
e. Back Muscle Index

10.  Of the dental professional listed below which one is not permitted to provide OJW:

1. Oral surgeons

2. Endodontists

3. Periodontists

4. Orthodontists
5. General dentists

6  All the above are permitted

11.  It is recommended but not mandatory to have a panorex or FMS when doing OJW?  T  F

12.  You may do OJW on a patient who has Type II diabetes if you have a note from their physician saying they may begin a low-calorie, long -tern liquid diet? T  F

13. OJW does not include:
a. Getting Informed Consent from a would -be patient
b. Periodic examination and rewiring
c. Teaching the patient/their significant other how to rewire the patient.
d. Charting your work on them
e. Taking their vital signs when they return for examination

14. It is within the scope of dentistry to diagnose obesity? T  F

15. You may provide OJW, if your state has not specifically ruled that it is not within the scope of dentistry T  F

16. It is  very important to have in your records a note from the patient’s physician indicating that the patient may begin a long-term, low-calorie liquid diet? T  F

17. How much weight might a patient expect to lose in three months:
a. 25-30 pounds
b. 35-35 pounds
c. 45-55 pounds
d. 50-75 pounds
e. 85-95 pounds

18. The BMI is:
a. Is a measure of muscle mass based on height and weight
b. Is a measure obesity based on the thickness of a fold of fat pinched on the hips
c. Is a measure of metabolism at the basal rest position.
d. Index of the patient’s breathing rate after a measured interval of time
e. A measure of body fat based on height and weight that applies to both adult men and women.

19. Obesity is defined by a BMI
a. <18.5
b. 18.5-24.9
c. 25-29.9
d. 30 and above but less than 40
e. 40-45

20. Which statement is true
a. Overweight is a disease
b. Over weight causes new diseases
c. There are some diseases that cause you to gain weight
d. Weight loss is a complicated issue including genetic factors
e. Dentists are professionals who can help the overweight
f.  They are all true

21. Morbid obesity is defined by the BMI being

a. <18.5
b. 18.5-24.9
c. 25-29.9
d. 30 and above but less than 40
e. 40+

22. Rothstein’s OJW position of rest can be best described as:
a. Light intercuspation of the teeth
b. Mandibular suspension
c. The physiologic rest position of the mandible
d. Centric Occlusion

23.  Which is not a concern when providing OJW?
a. Joint may become stiff if not properly exercised
b. Aspiration of vomitus
c. Bruxing
d. Regain of weight
e. All are true

24.  Which choice below is not a precaution for OJW patient:

a. Remove the wiring immediately in the event of nausea

b. Use a nasal decongestant is the nasal passages are blocked (getting a cold)

c. Always carry a wire cutter

d. A fork is a “tool” that could be used to undo the wiring

e. Nasal wideners are useful during sleep and deep breathing demands

f. All the above are useful precautions

25  Choose the correct answer
a. Dentists are allowed fit devices to help people with sleep apnea
b. Dentists may not diagnose overweight
c. Dentist can treat the obese
d. Dentists can fit and place devices recommended by Physicians
e. Some Obese eat compulsively
f.  All the above are true

26 The speech of patients who are jaw wired is:
a. Rather muffled
b. Well understood in most cases
c.  Is troubled all the time
d. Less clear but understandable

27. In Rothstein’s OJW Position of rest the mandible is free to move:
a. 0.0 – 0.0mm in every direction
b. 2.0-3.0mm to the right and the left only
c. 2:0 vertically
d. 2.5-4.0mm in all directions

28  In the OJW position of rest when the jaws are wired “Apart” there is no extrusive force on the teeth. T  F

29. Wiring both right and left sides in OJW takes about
a. Under one minute
b. 1 – 2 minutes
c. 3 – 4 minutes
d. 6-8 minutes depending on the operators skills and experiences
e. None of these

30. Doctor’s chair-time for placing OJW is about:
a. 5-10 minutes
b. 20-35 minutes
c. 60-90 minutes
d. >90 minutes

31. Brackets are typically placed
a. On the canines and first premolars alone
b. On the premolars
c. On canines and first and second premolars
d. On the molars and premolars.
e. On the molars and premolars

32. Regarding the Informed Consent which is not true
a. The OJW provider is responsible if the patient does not lose weight
b. The patient must get clearance from their Dr. to begin a liquid diet.
c. Weight loss is typically 1.5-2.5 pounds/week
d. The patient does not need to carry a wire cutter at all times
e. Sudden illness causing nausea is a reason to release the wiring

33. Which statement is not correct regarding orthodontic jaw wiring for weight loss
a.  Until now there is never been a protocol for this service
b.  What is new about OJW is the use of bonding brackets to the teeth
c.  Has a mortality rate of 0.00%
d.  Jaw stiffening is possible if the wiring is not removed periodically to exercise.
e.  All of the above are true.

34.The protocol for release of the jaw wiring to allow the patient to exercise is:
a. Every week for 1day
b. Every 2 weeks for 2 days
c. Every 3 weeks for 3 days
d. every 4-6 weeks for 4-6 days
e. None of the above

35. The normal maximum comfortable opening of the mouth is about
a. The combined height of the patient’s middle three fingers
b.  36 mm
c. About 5 mm more than the thickness of the patient’s tongue sticking out
d. Varies extensively from person to person
e. Varies extensively depending on the time of dayl

36. When choosing patents which criteria does not apply:
a.  Height
b.  Weight
c.  Health
d.  Periodontium
e.  BMI
f.   They all apply

37. Who would not be considered part of the patient’s overweight healthcare team
a.  Chirorpractor
b.  Psychotherapist
c.  registered dietician
d.  Physician
e.  The patients best friend
e.  Dentist

38.  At then end of 5 weeks of OJW which item is optional when checking the patient.
a.  Checking for stiffness of the TMJ
b.  Checking for mobility of teeth
c.  Checking for gingival health
d.  Checking for maximum mouth opening and lateral excursions
e.  Checking the patient’s weight.

39.  When choosing patients which criteria is most important.
a.  The information on the patients Informed Consent
b.  The information on the patient’s Dental-Medical form
c.  The information on the OJW Telephone memo
d.  a and b

40.  Which of the patients would you be least likely to select as an OJW patient
a.  A person with a BMI less than 23
b.  A person with a BMI between 25-35
c.  A person with a BMI between 35-39
d.  A person with a BMI between 39 and 43

41.  When your patient returns after 5 week to be examined and his jaw is stiff you would want to:
a.  Rewire him for 5 more weeks
b.  Recommend he return for a check up in 5 more days
c.  Recommend he exercise his jaw and return to the office in 5 days
d.  Remove the OJW brackets and discontinue the procedure
e.  Note your findings in the patient’s chart and then recommend he exercise his jaw and return to the office in 5 days

42.  For healthcare professionals the most important principle is:
a.  Nil Sine Magno Labore
b.  Primum Non Nocere
c.  Gaudeamus Igitur
d.  Vini Vidi Vici
e.  Quid Pro Quo

43.  Which one of the following makes you part of the healthcare team when you are providing OJW
a.  A note from the patient’s physician saying it is ok for the patient to begin a liquid diet.
b.  A  note for the patient’s PCP saying OJW is permissible
c.  A note from the patient’s dentist saying the TMJ and gums are in good health.
d.  A note from the patient’s psychortherpist (MD) approving OJW
e   All of the above.

44. Which of the choices below are not good candidates OJW.
a.  A singer and/or speech maker
b.  A person with asthma or sleep apnea
c.  A person with partial removable dentures
d.  A person with a BMI of below 24
e.  All of the above

45. It is safe to say there has never been a wrongful death from Jaw wiring whether associated with weight loss or trauma or pathology  T or F

46. Which is not true of Morbid obesity:
a. A bmi >40 or greater
b. Being more than 100 pounds overweight
c. It may precipitate Type 2 diabetes
d. It may precipitate Type 1 diabetes
e. It may be accompanied by high blood pressure
f.  All of them are true

47. Which document is most important to give to the patient on the day of the OJW.
a. The OJW questionnaire survey
c. The OJW Informed Consent
d. The OJW Due-diligence chat notice
e. The safety precautions notice

48.  Which kind of surface requires the least preparation to insure bracket-tooth cohesion”
a. Natural tooth
b. Porcelain surface
c. Metal surface

49.  Which document requires that the patient sigh it in four places
a.  Informed Consent
b.  OJW telephone memo
c.  How to proceed when you have chosen OJW
d.  The Safety precautions notice

50.  If a bracket becomes detached and the patient cannot return to your office which is the worst advice:
a.  Help them to locate a dentist or orthodontist to rebond the bracket
b.  Advise them that for a limited time they may wire two brackets to three brackets but three is preferred
c.  Not to worry at all it makes no difference whatsoever

51.  States vary widely in the extent to which they permit dental professionals to provide weight loss services T  F

52.  An orthodontist can bill an insurance company for services  related to OJW?    T  F

53  What role does staff play in the OJW procedure?
a. Staff can assist the doctor place the brackets
b. Staff will instruct patient how to rewire
c. Staff will prep patients for the procedure
d. Staff can review the Safety Precautions notice with the patient before they leave the office.
e. All of the above

54. Patients who elect to self-rewire find it very difficult to do? T F

55. Patient are requested to remove the wiring every 5 weeks for 5 days to allow the TMJ to move freely T  F

56.  If a patient detaches a bracket and can not return to your office it would be proper to advise them that it is ok temporarily OK to wire two brackets to 3 brackets  T F

57. If a patient detaches a bracket and can not return to your office it would be proper to advise them that it is ok to wire temporarily two brackets to two brackets  T F

58. If a patient detaches many brackets and can not return to your office it would be proper to advise them that it is ok to wire one to one bracket  T  F

59. As an OJW provider your patient-care is completed when you remove the brackets and residual adhesive.  T  F

60. The test to tell whether a patient can open their mouth comfortably is called.
a. Shut-my-mouth test
b. The vertical thumb test
c. The patient’s 3-finger test
d. The doctor’s three finger test


12/04/10, Rev. 072013


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