Airway and Facial Development

The Airway And

Facial Development Cycle

EvolutionAnd

Darwinian Dentistry:

Competencies

The Changing

Environment:Stressors

The Reacting

Physiology:Compensations

UnintendedConsequences:Compromises

Daniel Lieberman

• Paleontologist, Harvard

Adaptations and Natural Selection

Adaptation

Survival and Reproductive Success

NoYes

Dysevolution

Compromises

Evolution

Competencies

Competence vs. Compensation

Competence Compensation

Geneticby Evolution and Design

Epigeneticby Environment and Stress

Physiologic Function Parafunction

Balanceand

Health

Homeostasiswith

Secondary Compromises“Dysfunction”

Competence vs. Compensation

ParafunctionEvery

has a

Function Dysfunctionand a Competence

Compensation

Compromise

The reality is probably more of a spiral than either of the individual processes

Fever

Swollen Tonsils

Open Mouth, Low Tongue

Narrow Palate

Weak MM Musculature

Long Face

Tongue Thrust Swallow

Malocclusion

FormFunction

Every Parafunction has a Function and a Dysfunction

Competent vs Compromised Child

Competency Compensation Compromise

•Nasal breathing

•Lip competence

•Tongue on Palate

•Tongue range of motion

•Efficient chew/swallow

•Diaphragmatic breathing

•Good posture

•Breastfeeding

•Strong mast’ry muscles

•1o Cranial Respiration

•Mouthbreathing

•Hyperactive Mentalis

•Hyperactive Buccinators

•Low tongue posture

•Facial muscles active

•Chronic hyperventilation

•Strain against gravity

•Non-nutritive sucking

•Sugary, processed diet

•Structural Asymmetries

•Jaw Retrusion

•Crowded Incisors

•Narrow dental arches

•Maxillary dystrophy

•Tongue Thrust

•Asthma, Fatigue

•Pain, limited motion

•Malocclusion

•Leaky-gut dysbiosis

•Nerve/Vessel impingement

Malocclusion is caused by Growth and Development...

Genotype Phenotype

Total Growth

Malocclusion is caused by Growth and Development and Compensation...

Genotype Phenotype

Total Growth