2. Kevin L. Boyd, DDS, MS
Anthropologist in training
HYPOTHESIS:
Outdated/anthropologically-uninformed
diagnostic tools (Angle Malocclusion
ClassificationSystem and mostly Steiner-based
cephalometric norms) are leading to r
inaccurate diagnoses, inappropriate Tx
recommendations and consequential
increased susceptibility to airway disease.
3.
4. Sleep Breath. 2012 Jun;16(2):271-3.
Another possible explanation for our findings is that oral cavity features such as high
palates, narrow dental arches, and retruded chin all are additional risk factors for SDB in
children338. Kushida CA, Efron B, Guilleminault C. A predictive morphometric model for the obstructive
sleep apnea syndrome. Ann Intern Med. 1997;127:581–587
Although dentists and orthodontia recognize the importance of evaluating and treating
OSA, they have yet to realize howwell-positioned they are for the prevention of sleep-
disordered breathing (SDB).
5.
6.
7.
8.
9. Is the basis for McNamara’s “Ideal” anthropologically informed?
16. “ …(malocclusion) is a
relatively new phenomenon in
the human population and we
do not find it in skeletons until
after the seventeenth century.
” -Peter Gluckman
“… jaw anomalies (malocclusions wherein the teeth cannot fit properly in the jaw) are
relatively new to European populations. Well-preserved skeletons from the 15th and
16th centuries show almost no malocclusion in the population….”
17. EPI-GENETICS vs. GENETICS
Dear John: You have ruined me for other men. I yearn for you. I feel nothing but heartache when we are apart. I
am so happy.
Yoko
Dear John: You have ruined me. For other men, I yearn. For you, I feel nothing but heartache. When we are
apart, I am so happy.
Yoko
I
18. 75% of children, ages 6 to 11 and 89% of youths, ages 12 to 17, have some
degree of malocclusion
-
malocclusion in modern populations is higher than in ancient times.
malocclusion a “Disease of Westernization” - R Corruccini
19. Revolutions in Human Evolution: Have Advancements
in Agriculture and Industry Impacted Modern Facial
Form? Kevin L. Boyd, M.Sc. (Nutrition), D.D.S. (Peds.)
LARGER=wider and more
prognathic
27. “….there is much circumstantial evidence that jaws and faces do not
grow to the same size that they used to precisely because of our softer,
more processed diets.” Daniel E. Lieberman
39. ILLINOIS SLEEP SOCIETY CONFERENCE 2012
Advancing Mandibles and Maxillas with
Biobloc-Orthotropics: A Non-Surgical
Approach to Increasing Posterior
Pharyngeal Airway Space in Pediatric
OSA Patients Kevin L. Boyd, M Sc,
Kevin Boyd, DDS DDS
Stephen Sheldon, MD CMH
Jeffrey Hindin, DDS and
John Kelly, DDS NYU-
DSMC
42. 2/15/2010 BIOBLOC STAGE-1 Tx 2/21/2012 BIOBLOC STAGE- 3 Tx
Example: Assign an arbitrary control value for
airway radius of 1.0. A 50% reduction in airway
radius would mean that the new airway radius
would be 0.5. Now, according to Poiseuille, that
gives us...R = 1/(0.5)4 R = 1/0.0625 = 16 Therefore,
resistance to airflow is increased 16-fold with a
decrease in airway diameter (and radius) of 50%.
